Solid-state (29)Si NMR study of RSiSiR: a tool for analyzing the nature of the Si-Si bond.
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.
Kravchenko
Victoria
V
Department of Chemistry, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan.
Kinjo
Rei
R
Sekiguchi
Akira
A
Ichinohe
Masaaki
M
West
Robert
R
Balazs
Yael S
YS
Schmidt
Asher
A
Karni
Miriam
M
Apeloig
Yitzhak
Y