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Chalcogenide Derivatives of the seco ‐Cubane [Sn 3 ( μ 2 ‐NH t Bu) 2 ( μ 2 ‐N t Bu)( μ 3 ‐N t Bu)]
Author(s) -
Chivers Tristram,
Eisler Dana J.,
Ritch Jamie S.
Publication year - 2004
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.200400284
Subject(s) - chalcogen , chalcogenide , cubane , tin , crystallography , chemistry , solid state , sulfur , stereochemistry , crystal structure , organic chemistry
A series of monochalcogenide derivatives of the seco ‐cubane [Sn 3 ( μ 2 ‐NH t Bu) 2 ( μ 2 ‐N t Bu)( μ 3 ‐N t Bu)] has been prepared and characterized by NMR and X‐ray crystallographic studies. These complexes exhibit different tin‐chalcogen bonding modes. In the case of the monotelluride, a terminal Sn=Te bond was observed in solution and in the solid state, whereas for the monosulfide, a μ 2 bridging mode was adopted by the sulfur atoms. The monoselenide was found to employ both bonding modes in solution, although only the terminal Sn=Se bonding mode was structurally characterized. The complexes undergo chalcogen exchange between tin atoms in solution, and this process was studied by variable temperature NMR.