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(HgBr 2 ) 3 (As 4 S 4 ) 2 : An Adduct of HgBr 2 Molecules and Undistorted As 4 S 4 Cages
Author(s) -
Bräu Michael F.,
Pfitzner Arno
Publication year - 2007
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.200600363
Subject(s) - monoclinic crystal system , adduct , raman spectroscopy , crystallography , stoichiometry , crystal structure , molecule , crystal (programming language) , lattice constant , chemistry , materials science , stereochemistry , diffraction , physics , optics , organic chemistry , programming language , computer science
Abstract (HgBr 2 ) 3 (As 4 S 4 ) 2 is obtained by high temperature reaction of stoichiometric amounts of HgBr 2 and As 4 S 4 . It crystallizes in the monoclinic space group P 2 1 / c with the lattice constants a = 9.593(5) Å, b = 11.395(5) Å, c = 13.402(5) Å, β = 107.27(3)°, V = 1399(1) Å 3 , and Z = 2. The crystal structure consists of molecular units built from two undistorted As 4 S 4 cages which are coordinated weakly by three almost linear HgBr 2 units. Raman spectra clearly indicate minor bonding interactions between HgBr 2 and As 4 S 4 .