The magnetic properties of the antiferromagnetic basic iron(III) carboxylate [Fe(3)O(O(2)CPh)(6)(H(2)O)(3)]ClO(4)�py are studied by magnetic susceptometry and electron paramagnetic resonance spectrocopy. Ac susceptometry under moderate external magnetic fields reveals magnetic relaxation at ...
PubMed
Synthesisa a (a) (CHO)2, HCO2H, EtOH, 40 �C, 55%. (b) (CH2O)n, TMSCl, EtOAc, 70 �C, 51%. (c) LiOH 3 H2O, 3
E-print Network
-closing, anticapillary forceps. Touch grid to filter paper to blot away ddH2O. 3. Submerge in freshly prepared Reynold forceps or filter paper). � To destain, submerge grid in 1-10% AcCOOH for 1 or more minute(s) at room
New organic/inorganic hybrid material containing a ferrimagnetic cyano-bridged binuclear complex, [Gd(DMF)4(H2O)3Cr(CN)6]�H2O (DMF=N,N?-dimethylformamide), and photochromic azobenzene in poly(methylmethacrylate) (PMMA) cast films has been prepared. We characterized magnetic properties of bulk ...
NASA Astrophysics Data System (ADS)
In the title compound, [MnCl(C(10)H(12)N(2)O)(H(2)O)(3)]Cl, the Mn(II) ion has a distorted octa-hedral coordination environment formed by one N and one O atom from the chelating 3-dimethyl-amino-1-(2-pyrid-yl)prop-2-en-1-one ligand, one chloride anion and three coordinated water mol-ecules. Inter-molecular O-H?O ...
In the present work, coordination possibilities of the system dapdoH(2)/Ni(2+), being dapdoH(2) = 2,6-diacetylpyridine dioxime, have been explored, offering as a result a number of unprecedented clusters with a variety of topologies and magnetic behaviors. Depending on the precursors and reaction conditions, several compounds named [Ni(2)(dapdo)(2)] (1), ...
The yttrium(III)-containing tungstoantimonate(III) [{Y(?-SbW(9)O(31)(OH)(2))(CH(3)COO)(H(2)O)}(3)(WO(4))](17-) (1) has been synthesized in a simple one-pot reaction of Y(3+) ions with [?-SbW(9)O(33)](9-) and WO(4)(2-) in a 3:3:1 molar ratio in 1 M LiOAc/AcOH buffer at pH 5.3. Polyanion 1 is ...
Ozone Production. Ozone is created by. oxygen molecules and. energetic UV radiation. 3 " O. 2. + h� � 2 " O. 3. UV. �< 240 nm ...
NASA Website
Inorganic-organic hybrid frameworks, namely [Ce(H2O)3(pdc)]4[SiW12O40]�6H2O 1, [M(H2O)4(pdc)]4[SiW12O40]�2H2O (M=Ce for 2a, La for 2b, Nd for 2c; H2pdc=pyridine-2,6-dicarboxylic acid) were assembled through incorporation of Keggin-type heteropolyanion [SiW12O40]4? within the voids of lanthanides-pdc network as ...
... Finally, when the imines were prepared by a Mannich type reaction the phosphonate was of the type H2 O3 P-CH2 (NHCH2 CH2 ),-NH2 . ...
DTIC Science & Technology
... High speed magic angle spinning fluorine-19 spectra can ... The high resolution fluorine NMR spectrum contains two ... 20 (H2O) 3.44 0.555 11.8 6.56 ...
Upon excitation of Cl-(H2O)3 and I-(H2O)3 clusters, the electron transfers from the anionic precursor to the solvent, and then the excess electron is stabilized by polar solvent molecules. This process has been investigated using ab initio molecular dynamics (AIMD) simulations of excited states of Cl-(H2O)3 and I-(H2O)3 clusters. The AIMD simulation results of Cl-(H2O)3 and I-(H2O)3 are compared, ...
Energy Citations Database
The oxomanganese complex [H(2)O(terpy)Mn(III)(?-O)(2)Mn(IV)(terpy)H(2)O](3+) (1, terpy = 2,2':6-2?-terpyridine) is a biomimetic model of the oxygen evolving complex of photosystem II with terminal water ligands. When bound to TiO(2) surfaces, 1 is activated by primary oxidants (e.g., Ce(4+)(aq), or oxone in acetate ...
The dominant ions in the D-region of the ionosphere are proton hydrates, H^+ \\cdot (H_2O)_n, which are formed through a complex mechanism involving clustering, and a water network-mediated reaction, NO^+ \\cdot (H_2O)_3 + H_2O ⟶ H^+ \\cdot ...
Two new members of the Mn(12) family of single-molecule magnets (SMMs), [Mn(12)O(12)(O(2)CCH(2)Bu(t))(16)(Bu(t)OH)(H(2)O)(3)].2Bu(t)OH (3.2Bu(t)OH) and [Mn(12)O(12)(O(2)CCH(2)Bu(t))(16)(C(5)H(11)OH)(4)] (4) (C(5)H(11)OH is 1-pentanol), are reported. They were synthesized from ...
? ABSTRACT: Calculations are presented for the glycine�(H2O) 3 cluster anion, with glycine in canonical or zwitterionic form. The zwitterionic anions are predicted to be considerably lower in energy than the canonical anions, and the latter forms are found to be prone to isomerization to the zwitterionic anions. Therefore, we predict that the zwitterionic anions would be observed predominantly ...
The first high nuclearity, mixed-metal Bi(III)/Mn(IV) and Bi(III)/Mn(III) complexes are reported. The former complexes are [Bi(2)Mn(IV)(6)O(9)(O(2)CEt)(9)(HO(2)CEt)(NO(3))(3)] (1) and [Bi(2)Mn(IV)(6)O(9)(O(2)CPh)(9)(HO(2)CPh)(NO(3))(3)] (2) and were obtained from the comproportionation reaction between Mn(O(2)CR)(2) and MnO(4)(-) in a 10:3 ratio in the presence of Bi(NO(3))(3) (3 equiv) in either ...
Two new digadolinium(III) complexes with monocarboxylate ligands, [Gd2(pac)6(H2O)4] (1) and [Gd2(tpac)6(H2O)4] (2) (Hpac = pentanoic acid and Htpac = 3-thiopheneacetic acid), have been prepared and their structures determined by X-ray diffraction on single crystals. Their structures consist of neutral and isolated digadolinium(III) units, containing six monocarboxylate ligands and four coordinated ...
The role of water molecules in assisting proton transfer (PT) is investigated for the proton-pumping protein ferredoxin I (FdI) from Azotobacter vinelandii. It was shown previously that individual water molecules can stabilize between Asp(15) and the buried [3Fe-4S](0) cluster and thus can potentially act as a proton relay in transferring H(+) from the protein to the ?(2) sulfur atom. Here, we ...
The complex Cr(Y)(CN)2(H2O)(3-) resembles the various cyano-aquo and cyano-amine complexes of Cr(III) in that the thermal reaction is one of cyanide aquation, the rate increasing with decreasing pH. Unlike the other cases, however, there does not appear t...
National Technical Information Service (NTIS)
Aquation of Cr(CN)5NO(3-) in mildly acidic solution yields Cr(CN)2(H2O)3NO which is inert to further aquation. In solutions of pH less than 2, further loss of CN(-) occurs. The Cr-NO grouping remains intact until loss of CN(-) is complete. The slow step i...
with Cl- Cl- � Water movement is secondary to Na+ transport ATP 1. Na+ K+ H2O 3a. osmolarity 3b. osmolarity 4. osmosis H2O 4. Bulk flow 2. Na+ Formation of urine 1. Dilute 2. Concentrated First, imagine H2O concentrated 1400 Urea trap also contributes to interstitial osmolarity � Urea is a byproduct
The reaction of Re(CO)(3)(H(2)O)(3)(+) with hen egg white lysozyme in aqueous solution results in a single covalent adduct. Both NMR spectroscopy and single crystal X-ray diffraction show that the rhenium tricarbonyl cation binds to His15 via replacement of one of the coordinated water molecules. The formation of this adduct does not greatly affect the structure of the protein. PMID:21805003
The magnetic susceptibility behavior of an iron(III) squarate complex with empirical formula Fe(C404)(OH)(H2O)3 was studied in the range 20-300K. Presence of both terminally-coordinated bidentate squarate dianion and bridging hydroxy groups is supported b...
This document is part of Subvolume A9 `Structure Types. Part 9: Space Groups (148) R-3 - (141) I41' of Volume 43 `Crystal Structures of Inorganic Compounds' of Landolt-B�rnstein - Group III `Condensed Matter'.
This document is part of Subvolume A7 �Structure Types. Part 7: Space Groups (160) R-3m - (156) P3m1� of Volume 43 �Crystal Structures of Inorganic Compounds� of Landolt-B�rnstein - Group III �Condensed Matter�.
A family of thirteen tetranuclear heterometallic zinc(ii)-lanthanide(iii) complexes of the hexa-imine macrocycle (L(Pr))(6-), with general formula Zn(II)(3)Ln(III)(L(Pr))(NO(3))(3)�xsolvents (Ln = La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm or Yb), were prepared in a one-pot synthesis using a 3?:?1?:?3?:?3 reaction of zinc(ii) acetate, the appropriate lanthanide(iii) nitrate, the dialdehyde ...
A new barium acetate phase, di-mu(5)-acetato-tri-mu(4)-acetato-tri-mu(3)-acetato-tri-mu(2)-acetato-mu(2)-acetato-triaquahemiaquahexabarium(II), of analytical formula [Ba(6)(C(2)H(3)O(2))(12)(H(2)O)(3.5)], is described. The asymmetric unit contains six independent Ba centres with coordination numbers varying from 7 ...
Photoinduced magnetization of the cyano-bridged 3d 4f hetero-bimetallic assembly Nd (DMF)4(H2O)3(?-CN)Fe(CN)5?H2O (1) (DMF=N,N-dimethylformamide) is described in this paper. The ?M T values are enhanced by about 45% after UV light illumination in the temperature range of 5 50 K. We propose that UV light ...
A method for the preparation of eta5-metallocarborane complexes of technetium-99m in water was developed. The key to the procedure is the use of aqueous sodium or potassium fluoride, which prevents premature degradation of the Tc(I) starting material used to prepare the carborane complexes. Solid-phase extraction was used to purify Tc-metallocarboranes derived from both ortho and meta isomers, ...
The reaction of cis-[Pt(NO(3))(2)(NH(3))(2)] and sodium glycolate yielded the title compound, [Pt(C(2)H(2)O(3))(NH(3))(2)]. The Pt(II) atom, coordinated by two N atoms of ammine and two O atoms of the carboxyl-ate and oxido groups of the glycolate ligand, is in a square-planar environment. In the crystal structure, ...
Cometary and meteoritic matter, though originally interstellar, was reprocessed to varying degrees in the early solar system. The history of cometary matter can be inferred from various clues; specifically, the following questions are considered in this paper: (1) Anhydrous, Fe2+-bearing silicates: when and where did they form? (2) Hydrated silicates: if present, were they made by gaseous or ...
A visible light-induced magnetization change of the 3d-4f heterometallic, [Nd(DMF)4(H2O)3(?-NC)Co(CN)5].H2O (DMF=N,N-dimethylformamide), is observed and described. The plots of ?MT versus T of the complex showed that the ?MT values, after visible light illumination, were enhanced by about 25% as compared to before ...
A new polyoxometalate-based 3D framework K(5)Na[K(2){Dy(H(2)O)(3)}(2){As(2)W(19)O(68)}{WO(2)(pic)}(2)] (1) (pic = 2-picolinate), composed of picolinate-functionalised dysprosium-containing tungstoarsenates and distorted potassium-picolinate cubane units, has been synthesised from the polyoxometalate precursor ...
GROUP PETER C. BURNS�, KATHRYN M. DEELY AND LESLIE A. HAYDEN Department of Civil Engineering.461(1)�, V 4421.0(5) �3, R1 6.88%, Dc 4.517 g/cm3. The structure of magnesium-zippeite, Mg(H2O)3.5[(UO2)2(SO4-zippeite, magnesium-zippeite, and zinc-zippeite. They also synthesized NH4-substi- tuted zippeite, which is ...
The first plutonium(III) borate, Pu(2)[B(12)O(18)(OH)(4)Br(2)(H(2)O)(3)]�0.5H(2)O, has been prepared by reacting plutonium(III) with molten boric acid under strictly anaerobic conditions. This compound contains a three-dimensional polyborate network with triangular holes that house the plutonium(III) sites. The ...
sulfide: H2S HS- S2- Troilite FeS sulfide minerals: atmospheric dimethyl sulfide: (CH3)2S sulfosalt-dissolved selenate: Se0 Native selenium Se Se2- and Se0 Ferroselite FeSe2 selenide minerals: dissolved selenide: H2Se HSe- Se2- M�kinenite NiSe selenide minerals: Ferrihydrite FexO x- y(OH)ynH2O3 2 1 2 Goethite
Preliminary ab-initio calculations of the electronic structure of transition-metal ions in zeolites are reported. The planar trigonal (Cu(H2O)3) (sup 2+) and (Fe(H2O)3) (sup 2+) clusters were calculated using basis sets of the types STO-3G and STO3-21G. T...
Analyses of the bulk oxidation state of marine manganese nodules indicates that more than 98% of the Mn in deep ocean nodules is present as Mn(IV). The samples were collected from three quite different areas: the hemipelagic environment of the Guatemala Basin, the pelagic area of the North Pacific, and seamounts in the central Pacific. Results of the study suggest that todorokite in marine nodules ...
and loses 1.5 H2O molecules at 128 C, and the remaining H2O at 163 C. Epsom salts (MgSO4�7H2O) loses six H2O3+ + 6Fe3+ + 7H2O [2] In case of salt affected soils, Cl- ion reacts with dichromate producing- drated salts (Schulte and Hopkins, 1996 and Ben-Dor and Banin, 1989). While some hygroscopic water
The copper and gold metal-organic frameworks (MOFs) [Cu(3)(BTC)(2)(H(2)O)(3)](n), [Cu(3)(BTC)(2)] (BTC=benzene-1,3,5-tricarboxylate), and IRMOF-3-SI-Au are active and reusable solid catalysts for the cyclopropanation of alkenes with high chemo- and diastereoselectivities. This type of material gives better results ...
The family of GLI proteins (GLI1-3) comprises the intracellular mediators of the hedgehog pathway, which regulates a myriad of developmental processes, one of which is limb development. Whereas GLI1 and GLI2 seem to be dispensable during limb development, GLI3 is especially crucial since all GLI3-associated human ...
The C2H2 + O(3P) and HCCO + O(3P) reactions are investigated using Fourier transform infrared (FTIR) emission spectroscopy. The O(3P) radicals are produced by 193 nm photolysis of an SO2 precursor or microwave discharge in O2. The HCCO radical is either formed in the first step of the C2H2 + O(3P) reaction or by 193 nm photodissociation of ethyl ethynyl ether. Vibrationally excited CO and CO2 ...
Two series of novel complexes, [Ln(dca)(2)(Phen)(2)(H(2)O)(3)](dca).(phen) (Ln = Pr (1), Gd (2), and Sm (3), dca = N(CN)(-), phen = 1,10-phenanthroline) and [Ln(dca)(3)(2,2'-bipy)(2)(H(2)O)](n), (Ln = Gd (4), Sm (5), and La (6), 2,2'-bipy = 2,2'-bipydine), have been synthesized and structurally characterized by ...
Reaction of the (CH(3))(2)Sn(2+) electrophile toward trilacunary [A-alpha-XW(9)O(34)](n-) Keggin polytungstates (X = P(V), As(V), Si(IV)) with guanidinium as templating-cation resulted in the isostructural compounds Na[C(NH(2))(3)](2)[{(CH(3))(2)Sn(H(2)O)}(3)(A-alpha-PW(9)O(34))] x 9 H(2)O (1), ...
The preparation, X-ray crystallography and magnetic investigation of the first examples of methanetriacetate (mta)-containing lanthanide(III) complexes of formulae [Gd(mta)(H(2)O)(3)](n)4 n H(2)O (1) [Gd(mta)(H(2)O)(3)](n)2 n H(2)O ...
One homochiral 1D coordination polymer [Cu(ATIBDC)(2,2?-bipy)]�3H2O�CH3OH (1) and three achiral 1D coordination polymers: [Cd(ATIBDC)(2,2?-bipy)(H2O)]�3H2O (2), [Cd(ATIBDC)(phen)(H2O)]�4H2O (3), and ...
Understanding chemical reactivity at ultracold conditions, thus enabling molecular syntheses via interstellar and atmospheric processes, is a key issue in cryochemistry. In particular, acid dissociation and proton transfer reactions are ubiquitous in aqueous microsolvation environments. Here, the full dissociation of a HCl molecule upon stepwise solvation by a small number of water molecules at ...
A cyclic voltammogram of aqueous 0.1 mol dm(-3) triflic acid solutions of the d6 bioxo-capped M-M bonded cluster [Mo3(mu3-O)2(O2CCH3)6(H2O)3]2+ at a glassy carbon electrode at 25 degrees C gives rise to an irreversible 3e- cathodic wave to a d9 Mo(III)3 species at -0.8 V vs. SCE which on the return scan gives rise ...
Anterior-posterior (A/P) limb patterning in vertebrates is determined by the counteraction between the Sonic Hedgehog (Shh) and the Gli3 transcription factor. Shh exerts its effect on Gli3 by regulating the full-length Gli3 protein processing to generate a Gli3 repressor gradient along the A/P axis of the limb. However, it is not clear whether the ...
PubMed Central
Mutations in GLI3 manifest in several distinct clinical phenotypes including Greig cephalopolysyndactyly syndrome and Pallister-Hall syndrome (PHS). GLI3 belongs to the GLI family of transcription factors that mediates extracellular Sonic hedgehog (SHH) signals. In the absence of SHH signals, GLI3 is processed to ...
BackgroundThe zinc-finger transcription factor GLI3 is an important mediator of Sonic hedgehog signaling and crucial for patterning of many aspects of the vertebrate body plan. In vertebrates, the mechanism of SHH signal transduction and its action on target genes by means of activating or repressing forms of GLI3 have been studied most extensively during ...
Truncation mutations of the GLI3 zinc finger transcription factor can cause Greig cephalopolysyndactyly syndrome (GCPS), Pallister�Hall syndrome (PHS), and postaxial polydactyly type A (PAP-A). GLI3 is homologous to Drosophila Cubitus interruptus (Ci), which regulates the patched (ptc), gooseberry (gsb), and decapentaplegic (dpp) genes. Ci is sequestered ...
Three new phosphonic acid ligands (4- (t)butylphenyl phosphonic acid, 3,5-dimethylphenyl phosphonic acid, and diphenylmethylphosphonic acid) have been synthesized and employed in search of high molecularity iron(III) clusters. The cluster compounds are characterized by single crystal X-ray diffraction and magnetic measurements. The solvothermal reaction of FeCl 3.6H 2O with diphenylacetic acid and ...
The asymmetric unit of the title compound, [Cd(C(6)H(11)Cl(2)NO(6)P(2))(H(2)O)(3)](n), contains two octahedrally coordinated Cd atoms located in special positions, one on a twofold rotation axis and the other on a centre of symmetry. The metal atoms are connected by methyl morpholino ...
In the title compound, [Na(C(8)H(11)NO(3)P)(H(2)O)(3)](n), the sodium cation is octa-hedrally coordinated by five water mol-ecules and one O-bonded ethyl anilinophospho-nate anion. Four of the water mol-ecules bridge to adjacent sodium ions, resulting in an infinite chain of edge-sharing NaO(6) polyhedra. A network ...
The V5+ electrolyte solution from vanadium redox flow batteries was studied by variable temperature 17O and 51V Nuclear Magnetic Resonance (NMR) spectroscopy and DFT based computational modeling. It was found that the V5+ species exist as hydrated penta co-ordinated vanadate ion, i.e. [VO2(H2O)3]1+. This hydrated ...
In the title lanthanum complex, {[La(C(4)H(4)O(5))(H(2)O)(3)]NO3}n, the lanthanum cation is immersed in a nine-coordinate environment provided by a tridentate oxydiacetate (oda) ligand (through two carboxylate and one ether O atoms), three carboxylate O atoms from neighbouring oda ligands and three aqua ligands. ...
A set of results about the positive ion composition of the stratosphere, consisting of some recently obtained as well as some previously reported data, is presented and analyzed. It is compared with model calculations described in a companion paper. A review of the abundances of proton hydrates and nonproton hydrates shows that the latter most probably result from the presence of acetonitrile ...
The [Cu(L)2] � H2O (1), [Co(L)2] � 2H2O (2) and [Zn(L)2] � H2O (3) complexes with leucine (L) as ligand, were synthesized in water solution and analyzed by physical-chemical and spectroscopic means (UV-VIS, FT-IR, ESR). The comparative analysis of the IR spectra for the ligand and the complexes indicate the ...
In order to study the vector properties, especially the correlation between the reagents and the products, of the title reaction, the quasi-classical trajectory calculations on the 3A' and 3A? potential energy surfaces (PESs) have been performed. The results indicate that the product rotational angular momentum j' is aligned and oriented perpendicular to the scattering plane on both PESs. The ...
In the title coordination polymer, {[Tb(C(7)H(2)NO(5))(H(2)O)(3)]�H(2)O}(n), the Tb(III) atom is eight-coordinated by a tridentate 4-oxidopyridine-2,6-dicarboxyl-ate trianion, two adjacent monodentate anions and three water mol-ecules, forming a distorted bicapped trigonal-prismatic TbNO(7) coordination ...
In the title coordination polymer, {[Ho(C(7)H(2)NO(5))(H(2)O)(3)]�H(2)O}(n), the Ho(III) atom is eight-coordinated by a tridentate 4-oxidopyridine-2,6-dicarboxyl-ate trianion, two monodentate anions and three water mol-ecules, forming a distorted bicapped trigonal-prismatic HoNO(7) coordination geometry. The ...
Mass-selected Ionization-detected stimulated Raman spectroscopy (IDSRS), one of nonlinear Raman technique, have been applied to the studies of the intermolecular vibrations for several weakly bound species including naphthalene trimer, benzene-argon, and benzene- (H2O)3,4. For each of the complexes, several ...
The following reaction sequence which occurs in ionized NO--H2O or air--H2O mixtures has been studied: NO(+) + H2O + M goes to NO(+)(H2O) + M, NO(+)(H2O) + H2O + M goes to NO(+)(H2O)2 + M, NO(+)(H2O)2 + H2O + M goes to NO(+)(H2O)3 + M, NO(+)(H2O)3 + H2O g...
In the title compound, (H(3)O)[LaCl(2)(C(2)H(5)N(3)O(2))(2)(H(2)O)(3)]Cl(2)�2H(2)O, the La atom is bonded to seven O atoms (arising from two O,O'-bidentate biuret mol-ecules and three water mol-ecules) and two chloride ions in an irregular arrangement. A network of N-H?O, N-H?Cl, O-H?O and O-H?Cl hydrogen bonds ...
A series of novel organic-inorganic assemblies, [Zn(Meen)2]2[(4,4'-bipy)Zn2As8V12O40(H2O)] (1), [Zn(en)2(H2O)][Zn(en)2(4,4'-bipy)Zn2As8V12O40(H2O)].3H2O (2), [[Zn(en)3]2[Zn2As8V12O40(H2O)
In the title compound, [Zn(C(6)H(5)N(2)O(2))(2)(H(2)O)]�3H(2)O, the Zn(II) centre is five-coordinated by two O,N-bidentate Schiff base ligands and one O atom from a water mol-ecule in a slightly distorted square-pyramidal geometry. In the crystal, the complex and uncoordinated water mol-ecules are linked by ...
The transcriptional program orchestrated by Hedgehog signaling depends on the Gli family of transcription factors. Gli proteins can be converted to either transcriptional activators or truncated transcriptional repressors. We show that the interaction between Gli3 and Suppressor of Fused (Sufu) regulates the formation of either repressor or activator forms ...
The zinc finger transcription factor Gli3 is an essential mediator of hedgehog signaling. Gli3 has a dynamic expression pattern during embryonic development. In the neural tube, Gli3 transcripts are patterned along the anteroposterior and dorsoventral axes such that the ...
The reaction of 2,4,6-tri(2-pyridyl)-1,3,5-triazine (TPTZ) with RECl3 in ethanol solution was studied. Seven solid coordination compounds of rare earth were synthesized. Their elemental analysis, rare earth complexometric titration, molar conduction, TG-DTA curve, IR spectra and UV spectra were studied. The results suggest that the composition of the complexes was RE(TPTZ)C13 x 3H2O(RE = Sm, Eu, ...
Reactions of [{?(6)-C(6)H(5)COOH}Cr(CO)(3)] with sodium and potassium hydroxide resulted in the corresponding alkali metal derivatives [Na(H(2)O)(3){?(6)-C(6)H(5)COO}Cr(CO)(3)] and [K(2)(H(2)O)(CH(3)OH)(1.5)[{?(6)-C(6)H(5)COO}Cr(CO)(3)](2)]. Deprotonation of [{?(6)-p-C(6)H(4)(COOH)(2)}Cr(CO)(3)] with sodium and ...
A comparative study of the binding of square planar cis- and trans-[Pt(NH3)2Cl2] complexes and the octahedral [Ru(NH3)5(H2O)]3+ complex to tRNAphe from yeast was carried out by X-ray crystallography. Both of the carcinostatic compounds, cis-[Pt(NH3)2Cl2] and [Ru(NH3)5(H2O)]3+ show similarities in their mode of ...
Novel molecular complexes of 1,10-phenanthroline (phen) and 5-amino-1,10-phenanthroline (5-NH2-phen) [(5-NH2-phen)2(phen) (H2O)3 (1), (phen)2(imidazole) (H+) (BF4-) (2), (phen)2(benzimidazole) (H+) (BF4-) (3), (5-NH2-phen)4(H2O)3 ...
The metal-organic framework (?)[(La(0.9)Eu(0.1))(2)(DPA)(3)(H(2)O)(3)] was tested for extraction of pyrimicarb, procymidone, malathion, methyl parathion and ?- and ?-endosulfan from lettuce, with analysis using GC/MS in SIM mode. Experiments were carried out in triplicate at two fortification levels (0.1 and ...
Evidence for chromium(III) induced phosphorylation of a biomarker protein bovine serum albumin (BSA) is presented. Radiolabelled adenosine 5'-triphosphate (ATP) was reacted with BSA in the presence of various Cr(III) salts. While [Cr(NH3)5(H2O)]3+ brought about phosphorylation of BSA, several Cr(III) complexes, ...
By introduction of 1,4-benzenedicarboxylic acid as a second organic ligand, two new divalent metal(II) phosphonates with a 3D framework structure, namely, [Zn(HL1)(bdc)(0.5)] (1) and [Cd(1.5)(HL2)(bdc)(0.5)] (2) (H(2)L1 = H(2)O(3)PCH(NH(2))C(6)H(5), H(3)L2 = ...
A new vanadium(III) phosphite, (C4H8N2H4)0.5(C4H8N2H3)[V4(HPO3)7(H2O)3]1.5H2O, has been synthesized hydrothermally by using V2O5, H3PO3 as reactants, piperazine as the structure-directing agent. The as-synthesized product was characterized by powder X-ray diffraction, IR spectroscopy, inductively coupled plasma ...
Ag2[Cr3O(OOCC2H5)6(H2O)3]2[alpha-SiW12O40] [1] is a nonporous flexible ionic crystal composed of 2D-layers of polyoxometalates ([alpha-SiW12O40](4-)) and macrocations ([Cr3O(OOCC2H5)6(H2O)3](+)) stacking along the b-axis. The silver ...
We present femtosecond pump-probe mass and photoelectron spectra for adenine (A) and microhydrated A(m)(H(2)O)(n) clusters. Three distinct relaxation processes of photoexcited electronic states were distinguished: in unhydrated A, relaxation of the optically bright pipi* state occurred via the dark npi* state with respective lifetimes of <0.1 and 1.3 ps. In microhydrated clusters A(H(2)O)(n), ...
Molecular water-oxidation catalysts can deactivate by side reactions or decompose to secondary materials over time due to the harsh, oxidizing conditions required to drive oxygen evolution. Distinguishing electrode surface-bound heterogeneous catalysts (such as iridium oxide) from homogeneous molecular catalysts is often difficult. Using an electrochemical quartz crystal nanobalance (EQCN), we ...
Three new bimetallic oxamato-based magnets with the proligand 4,5-dimethyl-1,2-phenylenebis(oxamato) (dmopba) were synthesized using water or dimethylsulfoxide (DMSO) as solvents. Single crystal X-ray diffraction provided structures for two of them: [MnCu(dmopba)(H(2)O)(3)](n)�4nH(2)O (1) and ...
The interaction between [Ru(?(6)-p-cym)(H(2)O)(3)](2+) and (O,O) type chelators with different basicity of the donor atoms was studied using combined pH-potentiometric, (1)H-NMR and ESI-TOF-MS techniques. The studied nine ligands are building blocks of reported complexes with antitumor activity or may model (O,O) ...
In this paper, three pure inorganic eight-connected self-catenated networks based on the Silverton-type polyoxometalate [CeMo12O42]8? with lanthanide, transition metal and alkali metal cations as linkers: [Li(H2O)4]2Co(H2O)4Ce(H2O)3[CeMo12O42]�3H2O (1), ...
Haploinsufficiency for the transcription factor SOX10 is associated with the pigmentary deficiencies of Waardenburg syndrome (WS) and is modeled in Sox10 haploinsufficient mice (Sox10(LacZ/+)). As genetic background affects WS severity in both humans and mice, we established an N-ethyl-N-nitrosourea (ENU) mutagenesis screen to identify modifiers that increase the phenotypic severity of ...
Haploinsufficiency for the transcription factor SOX10 is associated with the pigmentary deficiencies of Waardenburg syndrome (WS) and is modeled in Sox10 haploinsufficient mice (Sox10LacZ/+). As genetic background affects WS severity in both humans and mice, we established an N-ethyl-N-nitrosourea (ENU) mutagenesis screen to identify modifiers that ...
