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Journal ArticleDOI

Beiträge zur Strukturchemie von Silberhalogenid-Diphosphinomethan- und verwandten Komplexen†

TLDR
The 1:1-komplex of AgBr with bis(diphenylphosphino)methane (dppm) was first reported in this article, where the structure consists of discrete bromide anions and trinuclear cations.
Abstract
Der 1:1-Komplex aus AgBr und Bis(diphenylphosphino)methan (dppm) kristallisiert in der orthorhombischen Raumgruppe Pna21 mit a = 1910(1), b = 2147(1) und c = 1858(1) pm (Z = 4). Seine Struktur besteht aus diskreten Bromid-Anionen und dreikernigen Kationen [Ag3Br2(dppm)3]+, deren Grundelement eine trigonale Bipyramide mit den Ag-Atomen in den aquatorialen und den Br-Atomen in den axialen Positionen ist. Jeder dppm-Ligand verbruckt eine Seite des Ag3-Dreiecks. Der 2:1-Komplex aus AgBr und Bis(diphenylphosphino)-methylamin (dppa) kristallisiert in der monoklinen Raumgruppe P21/c mit a = 1136,0(7), b = 1603,3(12), c = 1689,1 (12) pm und β = 122,36(4)° (Z = 4). Das Grundelement seiner Struktur ist eine tetragonale Bipyramide mit vier Ag-Atomen in den aquatorialen und zwei Bromid-Atomen in den axialen Positionen. Die AgAg-Kanten werden abwechselnd durch Br-Atome und dppa-Liganden uberbruckt. Allgemeine geometrische Beziehungen von Strukturparametern in Komplexen mit Diphosphinomethan und ahnlichen Liganden werden abgeleitet und diskutiert. Contributions to the Structural Chemistry of Silver Halide-Diphosphinomethane and Related Complexes The 1:1-complex of AgBr with bis(diphenylphosphino)methane (dppm) crystallizes in the orthorhombic space group Pna21 with a = 1910(1), b = 2147(1) and c = 1858(1) (Z = 4). Its structure consists of discrete bromide anions and trinuclear cations [Ag3Br2(dppm)3]+. The basic unit is a trigonal bipyramid with the Ag atoms in the equatorial and the Br atoms in the axial positions. Each dppm ligand bridges an edge of the Ag3 triangle. The 2:1-complex of AgBr with bis (diphenylphosphino)methylamine (dppa) crystallizes in the monoclinic space group P21/c with a = 1136.0(7), b = 1603.3(12), c = 1689.1(12) pm and β = 122.36(4)° (Z = 4). The basic unit of its structure is a tetragonal bipyramid with four Ag atoms in the equatorial and the bromine atoms in the axial positions. The AgAg edges are alternatingly bridged by bromine atoms and dppa ligands. Some general relations between structural parameters in complexes with diphosphinomethane and related ligands are deducted and discussed.

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Citations
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Oxozirconium Methacrylate Clusters: Zr6(OH)4O4(OMc)12 and Zr4O2(OMc)12 (OMc = Methacrylate)

TL;DR: In this paper, the crystaline oxozirconium methacrylate clusters Zr6(O-H)4O4(OMc)12 and Zr4O2(OMC)12 were obtained by reaction of Zr(OnPr)4 with an excess of methacrylic acid and analyzed by X-ray diffraction.
Journal ArticleDOI

Coordination complexes of silver(I) with tertiary phosphine and related ligands

TL;DR: An overview of the structural chemistry of silver(I) coordination complexes can be found in this paper, where the main discussion is on the halide complexes (F−, Cl−, Br−, I−).
Journal ArticleDOI

Anion-Controlled Nuclearity and Metal−Metal Distances in Copper(I)−dppm Complexes (dppm = Bis(diphenylphosphino)methane)

TL;DR: In this article, a triangulated triangular copper(I)−dppm complexes with bridging ligand X-connections were obtained by treating the dimeric Cu2(dplm)2(CH3CN)4(ClO4)2 or Cu2plm2(cln)3(μ3-X)2+ (X = Cl, Br, and I) and monocapped Cu3plm3(m3-OH)2 + (X, Br and I), respectively.
References
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Journal ArticleDOI

Gold-Komplexe von Diphosphinomethanen, I. Synthese und Kristallstruktur zweikerniger Gold(I)-Verbindungen

TL;DR: In this article, a 1:2-Komplexe with AuCl, Aul, and AuCH3 is described, and the results are of interest with respect to the short but nonbonding AuAu distance.
Journal ArticleDOI

Gold‐Komplexe von Diphosphinomethanen, II. Synthese und Kristallstruktur achtgliedriger Ringverbindungen von Gold(I) mit Au–Au‐Wechselwirkung

TL;DR: In this paper, the X-ray structure analysis shows that the two gold atoms of the centrosymmetric eight-membered ring are surrounded by two phosphorus and one chlorine atom in an approximately trigonal planar configuration.
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