Showing papers in "Polyhedron in 2007"

TL;DR: A survey of mononuclear iron(II) complexes with heterocyclic N-donor ligation is presented in this paper, where a brief introduction to spin-crossover chemistry and low-temperature spin-trapping is provided, since many of these compounds undergo thermal spintransitions upon cooling or heating.

TL;DR: In this paper, three-dimensional photonic crystals made of close-packed polymethylmethacrylate (PMMA) spheres or air spheres in silica, titania and ceria matrices have been fabricated and characterized using SEM, XRD, Raman spectroscopy and UV-Vis transmittance measurements.

TL;DR: A simple surfactant assisted aqueous solution approach, based on the conventional Tollen's reaction has been applied for the facile syntheses of silver nano-assembly as discussed by the authors, which is evident in very low (4 lg/ml) inhibitory concentration (MIC) value for Escherichia coli, Vibrio cholerae, Shigella flexneri, Salmonella typhimurium and three varieties of Staphylococcus aureus.

TL;DR: The single molecule magnet behavior of metal complexes containing a single magnetic ion was first reported for phthalocyaninato-lanthanide complexes with a double-decker structure as mentioned in this paper.

TL;DR: In this paper, three dinuclear Zn(II) complexes [Zn(L)(μ1, 1-N3)Zn (L)(N3)]· 1.5H2O (1),[Zn[L]-(OCH3)(OH)C6H3CHN(CH2)2 N(CH3)2], which is the condensation product of o-vanillin and 2-dimethylaminoethylamine have been synthesized from a potentially tetradentate N2O2-donor Schiff base

TL;DR: In this paper, eight chromium(III) complexes of tetradentate Schiff bases have been prepared in situ by condensing of a substituted salicylaldehyde compound with ethylenediamine.

TL;DR: The crystal structure of compound 9 has been determined by X-ray diffraction studies and is found that the dimer consists of two square pyramidal Cu(II) centers linked by two chlorine atoms.

TL;DR: In this article, a series of simple carboxylate complexes, some containing either one chelating {1,10-phenanthroline (phen) or 2,2′-bipyridine (bipy)} or two monodentate {benzimidazole (BZDH) or 5,6-dimethylbenzimaidazoles (5,6]-nitrogen donor ligands, have been prepared and characterised.

TL;DR: In this paper, it was shown that the symmetry of the carbonate anion in hydrozincite is reduced and in all probability the carbonates anions are not equivalent in the hydrated carbonate structure.

TL;DR: In this paper, a partial intercalative mode of binding was suggested for mixed ligand complexes with the formulae of Cu(RPO)2Py2, Cu(Pyridine and ImI2Im2) and Cu(DBO) 2Py2.

TL;DR: In this article, the authors synthesized and characterized the 2,6-bis(3,5-dimethyl-N-pyrazolyl)pyridine (SCN) complex using X-ray diffraction, IR, UV-Vis and TGA-DTA methods.

TL;DR: In this article, the synthesis and electrochemical characterisation of octapentylthiophthalocyaninato manganese(III) acetate (4 ) and octaphase titanium(IV) oxide (5 ) complexes are reported.

TL;DR: The synthesis and spectroscopic properties of the following tetra and octa-substituted aryloxy zinc(II) phthalocyanines are reported for the first time as discussed by the authors.

TL;DR: In this article, the polymer-copper(II) complex was tested for its antibacterial and antifungal activity and the experimental results indicate that the polymer−copper-II complex is an avid DNA binder and the binding constant increased with the increase in amount of copper(II)-chelate content in the polymer chain.

TL;DR: In this article, three di-Schiff-base ligands, N,N′-bis(salicylidene)-1,3-propanediamine (H2Salpn), N, N′-bi-bis-1, 3-pentanediamine, H2Salpen, and H 2Salen, react with Ni(SCN)2· 4H2O in 2:3 molar ratios to form the complexes; mononuclear [Ni(HSalpn)(NCS), trinuclear [{Ni

TL;DR: In this paper, a terephthalate-bridged tetranuclear copper (II) complex has been synthesized and structurally characterized by X-ray crystallography: [Cu4(L)2(tp)(dmf)2] (1) (H3L = 1,3-bis(salicylideneamino)propan-2-ol, tp ǫ=terephthalates, and dm f = N,N′-dimethylformamide).

TL;DR: In this paper, the crystal structure of N(4)-meta-tolyl-2-acetylpyridine thiosemicarbazone (H2Ac4mT) was determined, as well as that of its copper(II) complex [Cu(2Ac 4mT)] which contains an anionic ligand and a chloride in the coordination sphere of the metal.

TL;DR: In this article, nine new mononuclear metal complexes of the quinolone antibacterial agent pipemidic acid (HPPA) with VO(PPA)2(H2O), the axial position, trans to vanadyl oxygen, is occupied by one pyridone oxygen atom.

TL;DR: In this paper, the same method was employed to make [Fe(dmbipy)2Cl2][FeCl4] (2) (5,5′-dimethyl-2,2′-bipyridine), which were characterized by IR, UV-Vis and 1H NMR spectroscopy and single-crystal X-ray diffraction.

TL;DR: In this paper, the synthesis, photophysical and photochemical properties of tetra- and octa-[4-(benzyloxyphenoxy)] substituted gallium(III) and indium (III) phthalocyanines are reported for the first time.

TL;DR: In this article, the tetrasubstituted phthalocyanines, 2,9,16,23-tetrakis(6-hydroxyhexylsulfanyl) phTHC, M[Pc(S-C 6 H 13 OH) 4 ] (M = Zn(II), Cu(II, Co(II)), bearing sulfur and oxygen donor atoms on the periphery together with hexyl moieties, have been carried out together with spectroscopic and electrochemical characterization.

TL;DR: In this paper, the effect of temperature on dc conductivity and the impedance spectra of spin coated film of the compounds was investigated at temperatures between 295 and 433 K and in the frequency range 40-105 Hz.

TL;DR: In this paper, high spin with a spin multiplicity of 6.5 were characterized by elemental analysis, IR, UV-Vis and 1H NMR spectroscopies and by the X-ray diffraction method.

TL;DR: In this paper, three copper(II) complexes of salicylaldehyde N(4)-phenyl thiosemicarbazone (H2L1) and two copper-cyclohexyl THIOSEMICAZONE (H 2L2) have been synthesized and characterized by different physicochemical techniques like magnetic studies and electronic, infrared and EPR spectral studies.

TL;DR: In this article, the DNA binding and cleavage activity of 2,2′-bipyridine (bpy) and 1,10-phenanthroline (phen, 2) complexes were characterized by single-crystal X-ray crystallography.

TL;DR: In this paper, a family of porous magnets of [M3(HCOO)6] (Mn, Fe, Co and Ni) with open diamond framework based on M-centred MM4 tetrahedral nodes, can be prepared by conventional solution chemistry method.

TL;DR: The first uranyl tartrate to be crystallographically characterized was described in this paper, where each tartrate ligand bridges three uranyl ions, one of them in chelating fashion through proximal carboxylate and hydroxyl groups, resulting in two-dimensional assemblages with the uranyl pentagonal bipyramidal coordination polyhedra separated from one another.

TL;DR: Two pyrimidine based NNS tridentate Schiff base ligands S-methyl-3-((2-S-methyl 6-methylpyrimidine-4-pyrimidyl)methyl)dithiocarbazate [HL1] and S-benzyl-3 -((S- methyl-6-methylmcapto-6methylpyridyl)-4-carbaldehyde)methyl)-dithIoB [HL2] have been synthesized by the 1:1 condensation of 2-Smethylmercapt

TL;DR: A blue luminescent high-spin (s = 5/2) iron(III) complex, [FeIII(HL1)2]Cl (2), was synthesized with the acyclic tridentate salicylaldehyde 2-pyridyl hydrazone ligand, H2L1 (1), and it can subsequently be deprotonated and methylated into blue lumininescent iron( III) complexes, [ FeIII(L2)2],Cl (3), and [Fe III(MeL1) 2]Cl

TL;DR: In this paper, a series of phenoxy-ketimine ligands with controlled variations of sterics, namely 2]-1-(2,6-diethylphenylimino)ethyl]phenol (1a), 2-[1-, 2.6-dimethylphenymethyl]-phenoxy}2Ni(II) (2a) and {2-[1,6dimethyl]-methyl]-phenol(1b) and 2.2]-1.methyl-phenyl]-phenylmethyl(1c) (1c), were