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Structural and Preparative Studies of WX 4 L 2 (X = Cl, Br; L = Pyridine, 4‐methylpyridine) and crystal structure of WCl 4 Py 2
Author(s) -
Brenčič J. V.,
Čeh B.,
Šegedin P.
Publication year - 1979
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19794540126
Subject(s) - isostructural , monoclinic crystal system , crystal structure , crystallography , pyridine , chemistry , bond length , x ray crystallography , stereochemistry , physics , medicinal chemistry , diffraction , optics
WCl 4 Py 2 (Py = Pyridine) crystallizes in the monoclinic space group: I2/m, with a = 7.237(1), b = 7.278(2), c = 12.865(4) Å, β = 94.60(2)°, and Z = 2. WCl 4 Py 2 has 2/m crystallographic symmetry requiring trans position of the ligands. WCl and WN bond lengths are 2.347(1) and 2.181(4) Å. WCl 4 Py 2 is isostructural with WBr 4 Py 2 . WX 4 Pic 2 (Pic = 4‐methylpyridine) can be obtained from WX 4 Py 2 and 4‐methylpyridine at room temperature. Chemical and physical evidence speaks for the trans structure of WX 4 Pic 2 .