2024-03-29T00:03:33Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00030144
2023-01-16T04:23:15Z
320:321:322
Formation of BCBH/BCBCl Four-Membered Rings by Complexation of Boron- and Nitrogen-Substituted Acetylene with Hydro-/Chloroboranes
Kobayashi, Akemi
Suzuki, Katsunori
Kitamura, Ryo
Yamashita, Makoto
open access
“This document is the Accepted Manuscript version of a Published Work that appeared in final form in [Organometallics], copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see [https://pubs.acs.org/articlesonrequest/AOR-wR8MIvpG8vJuy3xUTpUS].”
Reactions of boron- and nitrogen-substituted acetylene toward hydro-/chloroboranes are described. The X-ray crystallography revealed the formation of BCBH/BCBCl four-membered rings in the solid state. By NMR and IR spectroscopic analysis, the BCBH four-membered ring was retained even in the solution. In contrast, the BCBCl four-membered ring exists as an association/dissociation equilibrium mixture in solution. The B–H–B moiety forms a three-center-two-electron bond through a spherical 1s orbital of a hydrogen atom; therefore, the four-membered ring does not have significant strain. On the other hand, due to the weak coordination bond from Cl to B, the BCBCl four-membered ring was labile. In addition, the rearrangement of the BCBH ring under heating conditions is described.
ファイル公開:2021-02-10
ACS Publications
2020-02-10
eng
journal article
AM
http://hdl.handle.net/2237/00032330
https://nagoya.repo.nii.ac.jp/records/30144
https://doi.org/10.1021/acs.organomet.9b00876
0276-7333
Organometallics
39
3
383
387
https://nagoya.repo.nii.ac.jp/record/30144/files/om-2019-00876nR1_marked_revised_200123.pdf
application/pdf
490.7 kB
2021-02-10