Solid-state (29)Si NMR study of RSiSiR: a tool for analyzing the nature of the Si-Si bond

Victoria Kravchenko; Rei Kinjo; Akira Sekiguchi; Masaaki Ichinohe; Robert West; Yael S Balazs; Asher Schmidt; Miriam Karni; Yitzhak Apeloig

doi:10.1021/ja065817s

Solid-state (29)Si NMR study of RSiSiR: a tool for analyzing the nature of the Si-Si bond

J Am Chem Soc. 2006 Nov 15;128(45):14472-3. doi: 10.1021/ja065817s.

Authors

Victoria Kravchenko¹, Rei Kinjo, Akira Sekiguchi, Masaaki Ichinohe, Robert West, Yael S Balazs, Asher Schmidt, Miriam Karni, Yitzhak Apeloig

Affiliation

¹ Department of Chemistry, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan.

PMID: 17090026
DOI: 10.1021/ja065817s

Abstract

The first solid state 29Si NMR of a disilyne, that is, RSiSiR, R = Si(CH(SiMe3)2)2(i-Pr) (1) was measured: delta11 = 364 +/- 20; delta22 = 221 +/- 16 and delta33 = -350 +/- 13; CSA = -643 ppm. These measured values as well as calculations for model disilynes strongly support the description of the Si-Si bond in bent disilynes as a triple bond, although with weakened pi-bonds and a reduced bond order of 2.6.