Nature of Bonding in Donor–Acceptor Interactions Exemplified by Complexes of N-Heterocyclic Carbenes with 1,2,5-Telluradiazoles

Nikolay A. Pushkarevsky, Pavel A. Petrov, Denis S. Grigoriev, Anton I. Smolentsev, Lucia M. Lee, Florian Kleemiss, Georgy E. Salnikov, Sergey N. Konchenko, Ignacio Vargas-Baca, Simon Grabowsky, Jens Beckmann, Andrey V. Zibarev

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

Comprehensive structural, spectroscopic, and quantum chemical analyses of new donor–acceptor complexes between N-heterocyclic carbenes and 1,2,5-telluradiazoles and a comparison with previously known complexes involving tellurenyl cations showed that the dative C−Te bonds cannot be solitarily described with only one Lewis formula. Canonical Lewis formulas that denote covalency and arrows emphasizing ionicity complement each other in varying extents. Evaluation of the relative weights of these resonance forms requires proper bonding description with a well-balanced toolbox of analytical methods. If for conciseness only, one resonance form is used, it must be the most significant one according to the analytical evaluation. If unclear, all significant resonance forms should be displayed.

Original languageEnglish
Pages (from-to)10987-10991
Number of pages5
JournalChemistry - A European Journal
Volume23
Issue number46
DOIs
Publication statusPublished - 16 Aug 2017

Keywords

  • bond analysis
  • carbenes
  • dative bonds
  • main-group compounds
  • tellurium

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