Kristallstrukturen von zwei Modifikationen des Mo(IV)-Komplexsalzes [(Et2PS2)3Mo3S(S2)3]+(Et2PS2)- / Crystal Structures of Two Modifications of the Mo(IV) Complex Salt [(Et2PS2)3Mo3S(S2)3] + (Et2PS2)-
Open Access
- 1 November 1982
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B
- Vol. 37 (11) , 1437-1441
- https://doi.org/10.1515/znb-1982-1114
Abstract
Tris(diothyldithiophosphinato)-tris-μ-disulfido-μ3-thiotriangulo-trimolybdenum(IV)-di-ethyldithiophosphinate, [(et2PS2)3Mo3S(S2)3+(et2PS2)-, crystallizes in two orthorhombic modifications with crystallographic parameters of A: a = 20.651(3), b=10.152(2), c = 19.019(2) Å, Pca21, Z = 4 and B: a = 20.128(2), b= 15.655(2), c = 12.608(1) Å, Pinna, Z = 4. Both crystal structures were determined from 2886 (A) and 3414 (B) X-ray data with R factors of 0.058 and 0.045, respectively. The Mo atoms form a trinuclear Mo3S(S2)3 cluster with local symmetry close to C3V in both modifications which differ in the packing of anions and cations and in the conformation of the ethyl groups. The av. distance Mo-Mo is 2.737 Å, the coordination number of the Mo atoms is 7 within the cluster and 9 on inclusion of the S atoms of the dithiophosphinato group.Keywords
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