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Bis[tris(trimethylsilyl)methyl]diselenid: Ein ungewöhnliches Dichalkogenid mit sterisch erzwungener trans‐C 2h ‐Konformation
Author(s) -
Wagner Irle,
Du Mont WolfWalther,
Pohl Siegfried,
Saak Wolfgang
Publication year - 1990
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19901231215
Subject(s) - trimethylsilyl , chemistry , tris , moiety , steric effects , stereochemistry , alkane stereochemistry , nuclear magnetic resonance spectroscopy , medicinal chemistry , molecule , organic chemistry , biochemistry
Bis[tris(trimethylsilyl)methyl] Diselenide: An Unusual Diselenide with Sterically Enforced trans‐C 2h Conformation Deselenation of bis[tris(trimethylsilyl)methyl] triselenide ( 1 ) with copper occurs with formation of bis[tris(trimethylsilyl)‐methyl] diselenide ( 2 ) and minor amounts of 3,3,5,5‐tetrakis(trimethylsilyl)‐1,2,4‐triselenolane ( 3 ). The structures of 2 and 3 have been studied by multinuclear NMR spectroscopy and by X‐ray crystallography. The CSeSeC moiety of 2 adopts an unusual antiperiplanar conformation. Cleavage of the Se Se bond by iodine providing iodo[tris(trimethylsilyl)‐methyl]selane ( 5 ) is complete with 2 , but reversible with 1 .