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1,3‐Di‐ tert ‐butyl‐2,2,4,4‐tetrahalocyclodisilazanes ‐ Synthesis, X‐ray Crystal and Gas‐Phase Structures
Author(s) -
Brönneke Christiane,
HerbstIrmer Regine,
Klingebiel Uwe,
Neugebauer Peter,
Schäfer Martina,
Oberhammer Heinz
Publication year - 1997
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.19971300704
Subject(s) - chemistry , crystallography , gas phase , crystal structure , planar , bond length , x ray crystallography , nitrogen , crystal (programming language) , diffraction , x ray , phase (matter) , stereochemistry , organic chemistry , physics , programming language , computer graphics (images) , quantum mechanics , computer science , optics
The syntheses of 1,3‐di‐ tert ‐butyl‐2,2,4,4‐tetrachlorocyclodisilazane ( 3 ) and of di‐ tert ‐butyl‐2,2,4,4‐tetrafluorocyclodisilazane ( 4 ) are reported. The X‐ray crystal structure of 3 and the electron‐diffraction gas‐phase structure of 4 have been determined. Both cyclodisilazanes possess planar four‐membered rings and nearly planar configurations at the nitrogen atoms. The Si‐N bond lengths are 171.1(1) pm and 170.6(3) pm and the Si ⃛Si transannular distances 245.0(1) and 241.3(13) pm in 3 and 4 , respectively.