title: Synthesis and structures of lithium alkoxytris(dimethylphenylsilyl)borates.
abstract: The reactions of trialkyl borates B(OR)3(R = Me, i-Pr) with dimethylphenylsilyllithium gave lithium alkoxytris(dimethylphenylsilyl)borates 1a,b. X-ray crystallographic analysis showed that 1a,b were obtained as a contact ion pair and a solvent-separated ion pair, respectively. The11B and29Si chemical shifts as well as the Si-B and B-O bond lengths of 1a,b and related compounds largely change, depending on the numbers of silyl and alkoxy substituents.
authors.affiliation: Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan. tsurusaki@c.s.osakafu-u.ac.jp.
authors.forename: Akihiro
authors.initials: A
authors.lastname: Tsurusaki
authors.forename: Keisuke
authors.initials: K
authors.lastname: Yoshida
authors.forename: Soichiro
authors.initials: S
authors.lastname: Kyushin