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Neutral, Cationic and Hydride‐substituted Siloxygermylenes
Author(s) -
Roy Matthew M. D.,
Fujimori Shiori,
Ferguson Michael J.,
McDonald Robert,
Tokitoh Norihiro,
Rivard Eric
Publication year - 2018
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201802958
Subject(s) - chemistry , steric effects , cationic polymerization , reactivity (psychology) , medicinal chemistry , carbene , hydride , lithium (medication) , borohydride , catalysis , oxidative addition , organic chemistry , metal , medicine , alternative medicine , pathology , endocrinology
The introduction of the labile trimethylsiloxy group to Ge II centers in the presence of an N‐heterocyclic carbene donor is reported. The new complex IPr⋅GeCl(OSiMe 3 ) (IPr=[(HCNDipp) 2 C:]; Dipp=2,6‐ i Pr 2 C 6 H 3 ) was readily converted into the structurally unique Ge II siloxy(hydrido)germylene IPr⋅GeH(OSiMe 3 )⋅BH 3 by treatment with lithium borohydride. Additionally, the reactive siloxygermylene cation [IPr⋅Ge(OSiMe 3 )] + was synthesized and clean oxidative addition of CH 2 Cl 2 was demonstrated. The two‐coordinate [IPr⋅Ge(OSiMe 3 )] + cation also promoted the catalytic hydroborylation of sterically hindered ketones under mild conditions, with enhanced reactivity stemming from an open coordination site at Ge.