Structural studies of group 5B-halide-dithio-ligand complexes. Part 2. Crystal structures of 1:1 adducts of bis(NN-diethyldithiocarbamato)iodoantimony(III) with chloroform and molecular iodine

Gregory McKie, Colin L. Raston, Graham L. Rowbottom, Allan H. White

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Crystallization of [Sb(S2CNEt2)2l] from chloroform gives an adduct [Sb(S2CNEt2)2l]·CHCl3. Single-crystal X-ray structure determination shows the complex to be comprised of a polymeric chain of the form -Sb(S2CNEt2)2-I-Sb(S2CNEt 2)2- with bridging iodine atoms linking Sb(S2CNEt2)2 units; the chloroform molecule is strongly hydrogen bonded to the polymer via the iodine atoms. Crystals are orthorhombic, space group Pcab, with a = 19.237(8), b = 12.534(5), c = 19.535(7) Å, and Z = 8, with the polymer chain parallel to b. Crystallization from methylene chloride instead with excess of iodine yields an adduct [Sb(S2CNEt2)2l]·(0.5l2) x, x ≤ 1. The unit-cell dimensions are a ca. 22.5, b ca. 10.0, c ca. 19.2 Å, Z = 8, and the space group Pbcn. Again the structure is a polymeric unit (similar to the above) running parallel to b with adjacent strands linked by l2 molecules charge-transfer bonded at the iodide units. As the molecular iodine content of the complex rises, its sites become increasingly populated, bonding the polymer strands more compactly and decreasing the cell volume.

Original languageEnglish
Pages (from-to)1360-1365
Number of pages6
JournalJournal of the Chemical Society, Dalton Transactions
Issue number6
DOIs
Publication statusPublished - 1981
Externally publishedYes

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