Premium
Compounds of Germanium and Tin, 22 – Reactions of a Silyene with a Germylene and a Stannylene: Formation of a Digermene with an Unusual Arrangement of the Substituents and of a Stannane
Author(s) -
Schäfer Annemarie,
Saak Wolfgang,
Weidenbruch Manfred,
Marsmann Heinrich,
Henkel Gerald
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.19971301205
Subject(s) - chemistry , stannane , germanium , tin , bent molecular geometry , crystallography , germane , stereochemistry , double bond , polymer chemistry , silicon , organic chemistry
The reaction of the diaminosilylene :Si(tBuNCH 2 CH 2 NtBu) ( 5 ) with the diaminogermylene :Ge(tBuNCH 2 CH 2 NtBu) is thought to proceed via a germasilene → silylgermylene rearrangement and dimerisation to furnish the (Z)−1,2‐diamino‐1,2‐disilyldigermene (Z)‐ 9 . The X‐ray structure analysis of (Z)‐ 9 reveals a long GeGe bond length of 245 pm and a large trans ‐bent angle of 42°. Air‐oxidation of (Z)‐ 9 takes place with retention of configuration at the germanium atoms to provide the corresponding substituted (Z)−2,4‐digerma‐1,3‐dioxetane (Z)‐ 10 . Treatment of 5 with the stannylene :Sn[N(SiMe 3 ) 2 ) 2 gives, as a final product, the hydridodisilylstannane 12 . The structures of (Z)‐ 10 and 12 were also determined by X‐ray crystallography.