Synthesis and Functionalization of Hexacoordinate (Arenediolato)bis(polypyridyl)silicon(IV) Complexes

• Published in: European journal of inorganic chemistry Vol. 2014; no. 18; pp. 2924 - 2933
• Main Authors: Breiding, Tom, Henker, Jens, Fu, Chen, Xiang, Yonggang, Glöckner, Steffen, Hofmann, Philipp, Harms, Klaus, Meggers, Eric
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 01-06-2014; WILEY‐VCH Verlag; Wiley Subscription Services, Inc
• Subjects: Carbonyl groups; Carbonyls; Crystal structure; Functionalization; Halides; Hexacoordinate complexes; Hydrolysis; Ligands; Robustness; Silicon; Stereoselectivity; Synthesis; Synthetic methods; X-rays
• ISSN: 1434-1948; 1099-0682
• DOI: 10.1002/ejic.201402024

Hexacoordinate (arenediolato)silicon(IV) complexes that contain two additional 2,2′‐bipyridine or 1,10‐phenanthroline ligands are surprisingly stable against aqueous hydrolysis and therefore constitute attractive and novel templates for the design of bioactive compounds. In this article, we report the synthesis of (arenediolato)bis(polypyridyl)silicon(IV) complexes, including a case of diastereoselective synthesis of a nonracemic hexacoordinate (binaphtholato)silicon(IV) complex, and methods for their post‐coordinative functionalization with halides, nitro, and carbonyl groups. Several X‐ray crystal structures are provided and demonstrate the octahedral coordination of silicon in these complexes.
Synthetic methods for the post‐coordinative introduction of functional groups, namely, halides, nitro, and carbonyl groups, into hexacoordinate silicon(IV) complexes are reported that exploit the chemical robustness of (arenediolato)bis(polypyridyl)silicon(IV) complexes