A Zwitterionic Heterobimetallic Gold–Iron Complex Supported by Bis(N-Heterocyclic Imine)Silyliumylidene
Hanusch F, Munz D, Sutter J, Meyer K, Inoue S (2021)
Publication Type: Journal article
Publication year: 2021
Journal
DOI: 10.1002/anie.202108146
Abstract
The facile synthesis of the first bis-N-heterocyclic imine-stabilized chlorosilyliumylidene 1 is reported. Remarkably, consecutive reaction of 1 with PPh3AuCl and K2Fe(CO)4 gives rise to the unique heterobimetallic complex 1,2-(MesNHI)2-C2H4-ClSiAuFe(CO)4 (4). The overall neutral complex 4 bears an unusual linear Si−Au−Fe structure and a rare anagostic interaction between the d10-configured gold atom and a CH bond of the mesityl ligand. According to the computational analysis and 57Fe Mössbauer spectroscopy, the formal Fe-oxidation state remains at −II. Thus, the electronic structure of 4 is best described as an overall neutral—yet zwitterionic—heterobimetallic “Si(II)+-Au(I)+-Fe(-II)2−”-silyliumylidene complex, derived from double anion exchange. The computational analysis indicates strong hyperconjugative back donation from the gold(I) atom to the silyliumylidene ligand.
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APA:
Hanusch, F., Munz, D., Sutter, J., Meyer, K., & Inoue, S. (2021). A Zwitterionic Heterobimetallic Gold–Iron Complex Supported by Bis(N-Heterocyclic Imine)Silyliumylidene. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.202108146
MLA:
Hanusch, Franziska, et al. "A Zwitterionic Heterobimetallic Gold–Iron Complex Supported by Bis(N-Heterocyclic Imine)Silyliumylidene." Angewandte Chemie International Edition (2021).
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