Showing papers in "Polyhedron in 1983"

TL;DR: Alkoxide ligands may act as four or two electron donor ligands and may readily change between terminal and bridging sites as mentioned in this paper, which allows for the facile interconnversion of saturated and unsaturated metal centers.

TL;DR: In this paper, the formation of n-alkylammonium complexes was studied using Na2Ti3O7 and K2Ti4O9 and the results for both compounds were compared.

TL;DR: In this paper, X-ray analysis showed that the crystalline compounds (Me4N)2[Cu4(SMe)6] (1), Me4N 2[CuI4-Octahedro-(SR)6]-2− cage all contain the [tetrahedro-CuI 4-octahedron-(SR)-6]2− molecular cage, and the stereo-chemical analysis was extended to all known instances of this cage structure and to alternative cage structures.

TL;DR: In this paper, a potentiometric study of aluminium(III) pyrocatecholates and aluminium hydroxo pyrocolates in 0.6 M Na(Cl) was performed.

TL;DR: In this article, the copper complex, (N 2 H 5 ) 2 Cu(C 2 O 4 ) 2 ·H 2 O has a square planar geometry with no coordination of hydrazinium cations as confirmed by a single crystal X-ray study.

TL;DR: In this article, a 1:1 molar ratio in refluxing tetrahydrofuran in the presence of triethylamine was obtained, where SB is the anion of the corresponding Schiff base, SBH.

TL;DR: In this article, the reduction behavior of P 2 W 18−n Mo n O 6− 62 anions that can undergo one or two electron reduction steps has been rationnalized by taking Mo V -O-Mo V angle and its deformation ability into consideration.

TL;DR: Etude des reactions des coordinats libres, des complexes plan carre and des complexes octaedriques as discussed by the authors, a.k.a. complexes octahedriques

TL;DR: In this paper, the molecular formula of the grafted cluster is characterized by IR and Raman spectroscopy; it is in agreement with the stoichiometric balance of CO evolved during its formation from Ru 3 (CO) 12.

TL;DR: In this article, the solubility of hydrous UO2 in sodium hydroxide solutions containing sodium dithionite and/or Zn metal powder as reductants has been measured.

TL;DR: In this article, the stoichiometries and kinetics of 12-tungstocobaltate(III) with L-cysteine, mercaptoacetic (thioglycollic) acid and β-mercaptoethylamine were investigated in aqueous perchloric acid solution over a wide concentration range and at an ionic strength of 1.0 mol dm−3 (NaClO4).

TL;DR: The crystal and molecular structures of c-Hex-DAB (c-hexyl-NC(H) C(H)-N-chexyl; DAB = 1,4-diaza-1,3-butadiene) and of trans-[PdCl2(PPh3))(t-Bu]-DAB are reported in this paper.

TL;DR: In this paper, mixed halide dialkyl-dithiophosphates of antimony(III) have been synthesized for the first time by the reaction of metal chlorides with antimony tris (diisopropy-ldithIophophosphate) with bromine or iodine.

TL;DR: In this article, the magnitudes and signs of the coupling constants in the symmetrical complexes LM(CO)4 (L = Ph2P(CH2)nPPh2, Ph2PN(H)Pph2, (Ph2P)2CCH2, cis-Ph2pCHCHPPh 2; M = Cr, Mo, W; n = 1-4).

TL;DR: In this paper, the crystal structures of compounds Cd(NCS)2(dmtp)2 (H2O)2 and Hg(SCN)2-DMTP2(DMTp) are described, and the ligand geometry appears to be the same for both compounds, within experimental error.

TL;DR: In this paper, the magnetic and spectral properties of the Co(II) and Ni (II) complexes support octahedral stereochemistry, whilst tetragonally distorted octagonal geometry is suggested for the Cu(II)-complex.

TL;DR: The trivalent ruthenium, rhodium and iridium complexes of dipicolinic acid and its mixed ligand complexes with several nitrogen, oxygen donor molecules, of types: Na[M(dipic) 2 ]·2H 2 O and [M(Dipic)(N-O)]· n H 2 O as discussed by the authors, have been synthesized and characterised on the basis of elemental analyses, electrical conductance, magnetic susceptibility measurements and spectral (electronic and infrared) data.

TL;DR: In this article, the electronic absorption spectra indicate that the lowest lying metal-to-ligand (L) charge transfer (MLCT) excited state is lower in energy than the ligand field (LF) excited states.

TL;DR: In this paper, high field measurements of polycrystalline LiAlO 2 polymorphs were used for the determination of the Al coordination in the α-, β-, and γ-phases.

TL;DR: In this paper, the synthesis, characterization and geometrical features of pentacoordinated dibutyltin(IV) dithiocarbazate complexes are described.

TL;DR: In this article, some lanthanide chelates of l-phenyl-3-methyl-4-acetyl-pyrazolone-5, HPMAP, have been synthesized and investigated.

TL;DR: In this paper, the synthesis of p-terphenylphosphonic acid and p,p″-terphylbis-phosphoric acid has been described. But the synthesis process is not described.

TL;DR: In this paper, the synthesis and single crystal X-ray structure of the pentagonal bipyramidal nickel(II) complex [Ni(L)(EtOH)2] involving the quinquedentate terpyridyl macrocyclic ligand L is reported; the electrochemical reduction of such complexes yields, in solution, d9 nickel(I) species.

TL;DR: In this paper, the thiosemicarbazones of α-hydroxy-β-naphthaldehyde have been isolated and they have been assigned a planar structure with S = 3/2.

TL;DR: In this paper, the structure of trans-[MCl(N2)· (PMe3)4] has been determined by X-ray crystallography and a final R value of 0.021 based on 319 independent observed reflections.

TL;DR: In this article, the reaction of cyclopentadienide with dipyridinium hexachlorocerate in tetrahydrofuran yields tris(cyclopentadiyl)cerium(III) and not tetrakis(cyclopentadieneyl)cerium(IV).

TL;DR: In this article, the activation parameters for the C2h⇌C2v reaction are reported and two isomers in solution are assumed to have structures of C 2h and C 2v, symmetry.

TL;DR: The complexes Mo{HB(Me2pyz)3}(NO)XY {HB(me 2pyz), 3, 5-Me2C3HN2)3 and SR (R=Bun, C6H11, CH2Ph, Ph); X=Br, Y=NHMe, NMe2 and SBun} have been prepared and characterised spectroscopically as discussed by the authors.

TL;DR: In this article, the synthesis of the trimethylphosphite analogue, [WOCl 2 (P(OMe) 3 ) 3 ], is described and the structures of the new complexes assigned on the basis of IR and 1 H and 31 P NMR spectroscopy.

TL;DR: In this article, the photoaquation of hexacyanoferrate(II) ion in aqueous solution was studied potentiometrically and spectrophotically.