In:
Angewandte Chemie International Edition, Wiley, Vol. 55, No. 46 ( 2016-11-07), p. 14464-14468
Abstract:
Reduction of carbene‐borane adduct [(cAAC)BBr 2 (CN)] (cAAC=1‐(2,6‐diisopropylphenyl)‐3,3,5,5‐tetramethylpyrrolidin‐2‐ylidene) cleanly yielded the tetra(cyanoborylene) species [(cAAC)B(CN)] 4 presenting a 12‐membered (BCN) 4 ring. The analysis of the Kohn–Sham molecular orbitals showed significant borylene character of the B I atoms. [(cAAC)B(CN)] 4 was found to reduce two equivalents of AgCN per boron center to yield [(cAAC)B(CN) 3 ] and fragmented into two‐coordinate boron(I) units upon reaction with IMeMe (1,3,4,5‐tetramethylimidazol‐2‐ylidene) to yield the corresponding tricoordinate mixed cAAC‐NHC cyanoborylene. The analogous cAAC‐phosphine cyanoborylene was obtained by reduction of [(cAAC)BBr 2 (CN)] in the presence of excess phosphine.
Type of Medium:
Online Resource
ISSN:
1433-7851
,
1521-3773
DOI:
10.1002/anie.201608429
Language:
English
Publisher:
Wiley
Publication Date:
2016
detail.hit.zdb_id:
2011836-3
detail.hit.zdb_id:
123227-7
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