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

Angewandte Chemie International Edition Wiley

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.

Authors with CRIS profile

Jörg Sutter Lehrstuhl für Anorganische und Allgemeine Chemie Karsten Meyer Lehrstuhl für Anorganische und Allgemeine Chemie

Involved external institutions

Technische Universität München (TUM) DE Germany (DE) Universität des Saarlandes (UdS) DE Germany (DE)

How to cite

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://dx.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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