Showing papers in "Polyhedron in 1994"

TL;DR: An overview of the atmospheric pressure chemical vapour deposition of nitride thin films from homoleptic early transition metal and main group amido complexes [M(NR2)n] and ammonia is presented in this article.

TL;DR: In this article, it was shown that tetraethoxysilane appears as a crosslinking agent which prevents the growth of poly(dimethylsiloxanes) chains, while titanium or zirconium alkoxides seem to behave mainly as catalysts for condensation of siloxane units and thus lead to the formation of long PDMS chains.

TL;DR: In this article, a variety of oxo or non-oxo mixed-metal acetatoalkoxides have been characterized in the solid (X-ray on single crystals) as well as in solution (FT-IR, multinuclear NMR).

TL;DR: In this paper, the preparation of the complexes PdLX, [Pd(HL) 2 ]X 2 and PdL 2 (X = Cl, Br; HL and L the neutral and deprotonated ligand) is described.

TL;DR: In this paper, the authors present a method of photolytic decomposition of metallo-organic molecular precursors for chemical vapour deposition (MOCVD) under UHV conditions.

TL;DR: In this article, a 15 membered chelate ring is constructed of five [Mn(III)-NO] linkages and the five manganese(III) ions are designated Mn(1), Mn(2) and Mn(3) atoms adopt propeller configurations with Λ,Δ,Λ absolute stereochemistry, respectively.

TL;DR: In this paper, a trinuclear triangulation of [Au(C≡CPh]∞ with dppm [bis(diphenylphosphino)methane] in ethanol has been characterized by X-ray crystal analysis.

TL;DR: In this article, the reaction of tetrakis(dimethylamido)titanium [Ti(NMe2)4, tdmat] and ammonia to yield titanium nitride (TiN) thin films and gas phase dimethylamine (HNMe 2) is discussed.

TL;DR: In this paper, a review of solution-phase metallo-organic routes to semiconductors in both bulk and nanoparticulate form is presented, and three stages in the elimination-condensation processes are identified: (1) the early formation of oligomers and polymers; (2) the later formation of semiconductor nanoparticles; and (3) the formation of bulk-like materials in the limit.

TL;DR: Tetracoordinate anionic neodymium(III) alkoxides and amides are obtained by adduct formation of Nd[OC(tBu)3]3 and Nd [N(SiMe3)2]3 with either LiCl or LiOSiMe3 as mentioned in this paper.

TL;DR: In this article, the stability constants of the complexes formed and their stoichiometries are given and interpreted, and the logarithms of the cumulative stability constant β xyz of the complex are obtained.

TL;DR: Copper(II) complexes of the type Cu[Tl(SCN2]2·L [where L = benzoic hydrazide (BH), isonic-infinitive hydrazides (INH), salicyclic hdyrazide(SH), anthranilic hydride (AH), p-hydroxybenzoic hexagonal hexagonal polygonal hexagon (PHBH) and their isopropanone derivatives were synthesized and characterized.

TL;DR: It is described herein how the cluster intermediates can be viewed as small fragments of the extended solid, structurally and physically as well as chemically.

TL;DR: In this paper, the magnetic properties of the powders were investigated using Mossbauer spectroscopy and SQUID magnetometry, and the morphology of the fine particles was characterized using transmission electron microscopy.

TL;DR: In this paper, the viability of the GaAs single-source chemical beam epitaxy (CBE) precursors [Me 2 Ga(μ-As i Pr 2 )] 3 (1), [Et 2 Ga-As t Bu 2 )] 2 (3 ) and Ga(As tBu 2 ) 3 (4 ) has been explored.

TL;DR: In this paper, the reaction of Na2PdCl4 with 2-(arylazo)pyridines (A) in ethanol affords yellow complexes of composition [PdACl2] in which the PdCl2 fragment has acis configuration [ν(Pd Cl): 350, 365 cm−1].

TL;DR: An overview of the current knowledge of factors influencing reactivity and mechanism in the chemical vapour deposition of the late transition elements from organometallic precursors can be found in this paper.

TL;DR: In this paper, mixed lanthanide nitrides are made by reaction of ground powders of LnCl 3 with Li 3 N using a rapid exothermic solid state metathesis reaction, which can be characterized by X-ray powder diffraction, scanning electron microscopy (SEM), energy dispersive Xray analysis (EDXA), FTIR, magnetic moment measurement and microanalysis.

TL;DR: Two complexes with pyridine-3-carboxylic acid (nicotinic acid) and two complexes with N-acetylthranilic acid (N-acetylanthranilato)-aquasilver(I) have been obtained and their crystal structures determined by X-ray diffraction as mentioned in this paper.

TL;DR: In this article, the pyridine-2-thione complex has been determined by single-crystal X-ray diffraction methods and a planar Cu2S2 moiety with CuS bond lengths of 2.3348(9) and 2.4879(7) A.

TL;DR: In this paper, the DEPE-bridged five-coordinate bis(diethyldithiocarbamato)M(II)(trialkylphosphine) complexes, 1 (M = Zn, alkyl = Me), 2 (M, Zn and Cd), 3 (M, Cd and Me), 4(M, Cd, Et), and 5 (Cd, Alkyl, Et) have been synthesized by adding trialkyl phosphine ligands to toluene solutions.

TL;DR: In this paper, dilute HOTf (OTf = O3SCF3) with oxides or chlorides of ScIII, LaIII, NdIII, SmIII, GdIII and ErIII, followed by thermal dehydration in vacuo, yielded anhydrous trifluoromethanesulphonato (triflato) complexes.

TL;DR: In this paper, a template condensation of alkylacetoacetate with diethylenetriamine resulted in the formation of homodinuclear transition metal complexes of a 20-membered macrocyclic ligand and the overall geometry and the mode of bonding have been inferred with IR, 1 H NMR, EPR and electronic spectra studies as well as magnetic and molar conductance data.

TL;DR: The title compound, [PbSPPh2)2N;2N, was obtained by reacting potassium tetraphenyldithioimidodiphosphinate with lead(II) acetate, and X-ray diffraction analysis reveals an unsymmetrical (anisobidentate) coordination of the chelating ligands, indicated by non-equal PbS interatomic distances [2.695(4] and 2.943(4) A].

TL;DR: The linkage isomerism in several transition metal hexacyanometallates was studied by Mossbauer, IR and XRD techniques as mentioned in this paper, and it was shown that Ferrous chromicyanides and manganicyanide transform into Cr3+ ferrocyanide and Mn2+ ferromagnetic oxide through an unstable intermediate ferric salt produced by the mean of an electron transfer.

TL;DR: In this paper, a series of FeL2 or FeIII complexes with tetrakis, hydridotris and tetrafluroborate was characterized by the 57Fe Mossbauer effect.

TL;DR: In this article, four dihaloruthenium(II) complexes of general formula Ru(PPh 3 ) 2 (L)X 2 [L = 2,2′-bipyridine (bpy), 1,10-phenanthroline (phen); X = Cl, Br] have been synthesized by the reaction of L with Ru (PPh3 ) 3 X 2 in dichloromethane.

TL;DR: Two mixed-ligand monomeric complexes, [Zn(phen) 2 (MeCO 2 )]ClO 4 (phen = ophenanthroline) (1 ) and [ Zn(bpy) 2(C 5 H 5 NCH 2 CO 2 )] (bpy = 2,2′-bipyridine) (2), have been prepared and characterized by X-ray crystallography as discussed by the authors.