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Title: Synthesis and structure of [(NH{sub 2}){sub 2}CSSC(NH{sub 2}){sub 2}]{sub 2}[OsBr{sub 6}]Br{sub 2} . 3H{sub 2}O

The complex [(NH{sub 2}){sub 2}CSSC(NH{sub 2}){sub 2}]{sub 2}[OsBr{sub 6}]Br{sub 2} . 3H{sub 2}O is synthesized by the reaction of K{sub 2}OsBr{sub 6} with thiocarbamide in concentrated HBr and characterized using electronic absorption and IR absorption spectroscopy. Its crystal structure is determined by X-ray diffraction. The crystals are orthorhombic, a = 11.730(2) A, b = 14.052(3) A, c = 16.994(3) A, space group Cmcm, and Z = 4. The [OsBr{sub 6}]{sup 2-} anionic complex has an octahedral structure. The Os-Br distances fall in the range 2.483-2.490 A. The {alpha},{alpha}'-dithiobisformamidinium cation is a product of the oxidation of thiocarbamide. The S-S and C-S distances are 2.016 and 1.784 A, respectively. The H{sub 2}O molecules, Br{sup -}ions, and NH{sub 2} groups of the cation are linked by hydrogen bonds.
Authors:
;  [1] ;  [2] ; ;  [1]
  1. Peoples' Friendship University of Russia (Russian Federation)
  2. Karpov Research Institute of Physical Chemistry (Russian Federation)
Publication Date:
OSTI Identifier:
22050958
Resource Type:
Journal Article
Resource Relation:
Journal Name: Crystallography Reports; Journal Volume: 53; Journal Issue: 4; Other Information: Copyright (c) 2008 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION SPECTROSCOPY; BROMINE IONS; CATIONS; CRYSTALS; HYDROBROMIC ACID; ORTHORHOMBIC LATTICES; OSMIUM BORIDES; OSMIUM COMPLEXES; OXIDATION; POTASSIUM COMPOUNDS; SPACE GROUPS; SYNTHESIS; THIOUREAS; X-RAY DIFFRACTION