Showing papers in "Polyhedron in 2001"

TL;DR: The role of chromium(III) has been poorly understood and only recently has a somewhat clear picture of the role of this element been refined as mentioned in this paper, although chromium deficiency is difficult to achieve.

TL;DR: In this article, the late Olivier Kahn's model can be applied to three-dimensional Prussian Blue analogues to get room-temperature magnets and associated devices in a rational way.

TL;DR: In this article, two polymeric complexes, [Cu2btec)(phen)2]n·(H2O)n (1) and [Cd4(btec)2(phen)4(H 2O)4]n (2 )(H 4btec = 1,2,4,5-benzenetetetracarboxylic acid; phen =1,10-phenanthroline), were synthesized by solvothermal reactions at 140 °C.

TL;DR: A tridentate Schiff base having HNNS donor sequence was prepared by condensing S-benzyldithiocarbazate (NH2NHCSSCH2Ph) with pyridine-2-carboxaldehyde Complexes of this ligand with Cu(II), Cd (II) and Zn(II) were synthesized and characterized by elemental analyses and various physico-chemical techniques as discussed by the authors.

TL;DR: In this article, the reaction of cobalt, nickel, copper and cadmium chlorides and bromides with 5-methylfurfural thiosemicarbazone (M5FTSC) leads to the formation of two series of new complexes: [M(M5FsC)2X2] and [M 5FsC]X2].

TL;DR: In this article, Ru(LH)2(PPh3)2, (LH2=pyridine 2,3-dicarboxylic acid (L1H2) was synthesized by a new method.

TL;DR: In this article, the structure and magnetic properties of multilayer compounds M 2 (OH) 2 A· z H 2 O, where M = Co(II) or Cu(II), and A is a dicarboxylate anion.

TL;DR: In this article, the Fe(III) complexes of methylphosphonic acid (MPA), Fe 2 (CH 3 PO 3 ) 3 ·3H 2 O, and aminomethylphosphoric acid (AMPA) were prepared in solid state and obtained as fine powders, and the proposed structures for these complexes are the monodentate protonated [FeO−PO(OH)CH 3 ] 2+ and the deprotonated chelate [Fe 2 −POCH 2 NH 3 ], respectively.

TL;DR: A series of tin unsymmetric dithiocarbamate complexes have been made from metathesis reaction of [CH3(C4H9)NSC2]Li and RnSnCl4-n; [RnSn(S2CN(C 4H 9)CH3)(4n)].

TL;DR: In this article, the synthesis, characterization and thermogravimetric studies of [ N, N'-cis -1, 2-cyclohexylene bis(salicylideneaminato)]cobalt(II), [Co(II)( c -Salcn)], and [ N, N' -( ± )- trans -1.2-cycloenylene bis (salicyideneaminaato)

TL;DR: In this article, Ni(II) complexes were characterized by X-ray crystallography, magnetic susceptibility and thermogravimetry, and the identities of the decomposition products were discussed.

TL;DR: In this article, a density functional study of the exchange coupling in two complexes with cubane structure is presented, one of them can be considered as a pair of binuclear hydroxo-bridged Cu(II) complexes and the second one is an alkoxo-branched distorted cubane with S4 symmetry.

TL;DR: Three Co(III) complexes of the type [Co(salophen)(amine)2]ClO4, salophen=N,N′-disalicylidene-1,2-phenylendiamine dianion and amine=morpholine (1), pyrrolidine (2), and piperidine (3), have been synthesized and characterized by elemental analysis, IR, UV-Vis, 1H, and 13C NMR spectroscopy as mentioned in this paper.

TL;DR: A series of manganese-containing mononuclear and binuclear model compounds of superoxide dismutase (SOD) coordinated by a polydentate ligand N,N, N′,N′-tetrakis(2′-benzimidazolyl methyl)-1,2-ethanediamine (EDTB) have been synthesized and characterized.

TL;DR: In this article, the X-ray analysis revealed two 3D interpenetrating α-polonium networks consisting of 1D chains of Cu-pyrazine units connected by [Au(CN)2] bridges.

TL;DR: In this article, the authors described the magnetization tunneling of the direction of magnetization for two crystallographically different forms of [Mn12O12(O2CC6H4-p-Me)16(H2O)4] solvate.

TL;DR: In this paper, a single crystal X-ray investigation at different temperatures of magnesium phthalocyanine showed that the MgPc molecule is not planar and significantly deviated from the N4-isoindole plane.

TL;DR: The influence of anellation on the properties and structures of heterocyclic diaminogermylenes was studied in this article, showing that the sensitivity to distortions of bond lengths in the germylene 3 as compared to 1 and 2 may hint to a lower stability of the non-anellated diazagermoline-2-ylidene π-system as compared with the 10π-system in the anellated compounds 1.

TL;DR: A number of Ni(II) complexes with tridentate Schiff base ligands with a N2O donor set and coordinating NNN− and SCN− anions have been synthesized and characterized by analytical, spectroscopic and electrochemical techniques.

TL;DR: In this article, a five-coordinate structure for the NNS tridentate chelating agent and a distorted octahedral structure for a bis-ligand NNS thiosemicarbazone ligand were derived.

TL;DR: In this paper, the authors reported the synthesis, structure and magnetic properties of a new member of the family of high nuclearity manganese clusters, which was obtained from the comproportionation reaction between Mn(OAc)2·4H2O and KMnO4.

TL;DR: Anionic metal tris-dicyanamide complexes of type (Ph4As)[M(dca)3] have been synthesised and characterised by X-ray crystallography, powder diffraction and detailed magnetic measurements as discussed by the authors.

TL;DR: A series of RuCl2(PPh3)2(N)2 and RuCl 2(Pph3)3(N)-N 2 complexes were synthesized from a single crystal X-ray crystallography as discussed by the authors, which were characterized by elemental analysis, cyclic voltammetry and UV-Vis.

TL;DR: Acyclic dicompartmental ligands suitable for the complexation of transition-metal ions which can form mononuclear, homo- or heterodinuclear complexes have been synthesized.

TL;DR: In this paper, a series of isomorphous bis-dipicolinato lanthanide complexes were synthesized in a two-dimensional network, where sheets are parallel to the (100) plane and the composition of the 7FJ levels is consistent with a true C1 local symmetry.

TL;DR: In this paper, the authors reported the syntheses and characterization of new ligand protected precursors of the types cis-[M(LL)2(S)2]2+ (S=solvent), cis-M[M[L] 2(S)]2(CN)2 + (S = solvent) and cis-L 2(O35CF3)2.

TL;DR: In this paper, the Hartree-Fock (UHF) and hybrid-density functional theory (DFT) calculations have been carried out for the metal oxides such as copper oxides and nickel oxides.

TL;DR: In this article, two one-dimensional coordination polymers [Co(acac)2pz]n (1) and [Co[acac]2(4,4′-bipy)]n (2) have been synthesized by reaction of Co(acAC)2(H2O)2 with pyrazine and 4,4−bipyridine, respectively.

TL;DR: A new complex of formula, Mn(NITpPyramid)2[Ag(CN)2]2, where NITpP stands for 2-(4-pyridyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide, was synthesized and characterized structurally and magnetically as mentioned in this paper.

TL;DR: In this paper, the crystal structures of Zn(II) and Cu2(μ-dea)2(sac) complexes were determined by single crystal X-ray diffraction.