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Solid–State Structure of Tris(phenylsilyl)amine
Author(s) -
Mitzel Norbert,
Schier Annette,
Schmidbaur Hubert
Publication year - 1992
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.19921251215
Subject(s) - chemistry , amine gas treating , crystallography , tris , molecule , substituent , steric effects , tertiary amine , adamantane , crystal structure , trigonal bipyramidal molecular geometry , stereochemistry , polymer chemistry , organic chemistry , biochemistry
The solid–state structure of tris(phenylsilyl)amine ( 1 ) has been determined by single–crystal X–ray diffraction analysis. The compound crystallizes in the trigonal space group R 3 with three formula units in the unit cell. The molecules, which display crystallographic C 3 symmetry, contain almost completely planar NSi 3 units with a propeller–like arrangement of the phenyl rings attached to them. By contrast, the carbon analogue tribenzylamine is strongly pyramidal at nitrogen, which – in the absence of steric effects – clearly demonstrates the planarization effect of silicon as a substituent to nitrogen in tertiary amines.