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Issue 20, 2019
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4-Halo-1,2,3-triazolylidenes: stable carbenes featuring halogen bonding

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Abstract

Synthesis and coordination of 4-halo-1,2,3-triazolylidenes have been developed. These novel ligands featured the character with σ-donation at carbon and a σ-hole at the halogen. Halogen bonding was observed by single crystal X-ray diffraction in their coinage metal complexes. The electronic properties of 4-iodo-1,2,3-triazolylidene were studied by both Ir–CO frequencies of the Tolman electronic parameter (TEP) and Huynh's electronic parameter (HEP) method, which suggested similar electronic properties to those of imidazolylidenes. During HEP tests, an interesting tunability was observed when different electron donors were employed.

Graphical abstract: 4-Halo-1,2,3-triazolylidenes: stable carbenes featuring halogen bonding

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Supplementary files

Article information


Submitted
08 Mar 2019
Accepted
12 Apr 2019
First published
12 Apr 2019

Dalton Trans., 2019,48, 6931-6941
Article type
Paper

4-Halo-1,2,3-triazolylidenes: stable carbenes featuring halogen bonding

X. Xu, Z. Zhang, S. Huang, L. Cao, W. Liu and X. Yan, Dalton Trans., 2019, 48, 6931
DOI: 10.1039/C9DT01018A

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