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