SYNTHESIS AND REACTIONS OF ARYLSELENOMETHYLSTANNYL COMPOUNDS, R3SNCH2SEAR - CRYSTAL AND MOLECULAR-STRUCTURE OF [(META-METHOXYPHENYLSELENO)METHYL]TRIPHENYLSTANNANE

The crystal and molecular structure of [(m-methoxyphenylseleno)methyl]triphenylstannane, Ph3SnCH2SeC6H4OMe-m (II), has been determined. Compound II contains a slightly distorted tetrahedral tin atom with an intramolecular SnSe distance of 3.319(2) Å. Reactions of II and Cy3SnCH2SeC6H4nCl- p (III) (Cy=cyclohexyl) with various reagents have been studied; III reacts with Pb(OAc)4, N- bromosuccinimide (NBS), I2 or CF3CO2H to give XCH2SeC6H4Cl-p (X=AcO, Br, I or H). Compound II reacts at the PhSn bond with Cl2Pt(COD) (COD=cycloocta-1,5-diene), at the SnCH2(SeC6H4OMe- m) bond with NBS, and at both bonds with I2. Absorption maxima for charge-transfer complexes with (NO2CC(CN)2 were recorded. © 1990.