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Main Title: Unprecedented silicon(II)-> calcium complexes with N-heterocyclic silylenes
Author(s): Blom, Burgert
Klatt, Günter
Gallego, Daniel
Tan, Gengwen
Drieß, Matthias
Type: Article
Language Code: en
Abstract: The first N-heterocyclic silylene (NHSi) complexes of any s-block element to date are reported for calcium: [(eta(5)-C5Me5)(2)Ca<--:Si(O-C6H4-2-Bu-t){((NBu)-Bu-t)(2)CPh}] (6) and [(eta(5)-C5Me5)(2)Ca<--:Si((NBuCH)-Bu-t)(2)] (7). Complexes 6 and 7 are isolable in a facile way upon reaction of the corresponding free N-heterocyclic silylenes (NHSis) with [(eta(5)-C5Me5)(2)Ca] (2). Complexes 6 and 7 were fully characterised by spectroscopic means and the single crystal X-ray diffraction analysis of 6 is also reported. Analysis of the bonding situation by DFT methods including a Bader Atoms in molecules (AIM) analysis is also reported. The bonding interaction between the Si and Ca centres in complexes 6 and 7 can best be viewed as sigma-donor-acceptor interactions, with a considerable ionic contribution in the bond. The reactivity towards the oxygen containing substrates THF and benzophenone is also discussed.
Issue Date: 2015
Date Available: 25-Oct-2017
DDC Class: 540 Chemie und zugeordnete Wissenschaften
Sponsor/Funder: DFG, EXC 314, Unifying Concepts in Catalysis
Journal Title: Dalton transactions
Publisher: Royal Society of Chemistry
Publisher Place: Cambridge
Volume: 44
Issue: 2
Publisher DOI: 10.1039/c4dt03148b
Page Start: 639
Page End: 644
EISSN: 1477-9234
ISSN: 1477-9226
Appears in Collections:FG Metallorganische Chemie und Anorganische Materialien » Publications

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