Solid-State 29Si 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 , and
- Yitzhak Apeloig
Abstract

The first solid state 29Si NMR of a disilyne, that is, RSiSiR, R = Si(CH(SiMe3)2)2(i-Pr) (1) was measured: δ11 = 364 ± 20; δ22 = 221 ± 16 and δ33 = −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 π-bonds and a reduced bond order of 2.6.
§
Technion-Israel Institute of Technology.
‡
University of Tsukuba.
*
In papers with more than one author, the asterisk indicates the name of the author to whom inquiries about the paper should be addressed.
#
University of Wisconsin.
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