The Influence of β-diiminato Ligands on As4 Activation by Cobalt Complexes

Spitzer F, Balazs G, Grassl C, Keilwerth M, Meyer K, Scheer M (2018)

Publication Type: Journal article

Publication year: 2018

Journal

Angewandte Chemie International Edition Wiley

Book Volume: 57

Pages Range: 8760-8764

Journal Issue: 28

DOI: 10.1002/anie.201802888

Abstract

In a systematic study of the activation of As4, three [LCo(tol)] (L=β-diiminato) complexes have revealed different steric and electronic influences. 2,6-Diisopropylphenyl (Dipp) and 2,6-dimethylphenyl (dmp) flanking groups were used, one of the ligands with H backbone substituents (β-dialdiminate L0) and two with Me substituents (β-diketiminates L3 and L1). In the reaction with As4, different dinuclear products [(LCo)2As4] (LM=L0 (1), L1 (2), L3 (3)) were isolated, with all showing differently shaped [Co2As4] cores in the solid state: octahedral in 1, prismatic in 2, and asterane-like in 3. Thermal treatment of 3 leads to the abstraction of one arsenic atom to yield [(L3Co)2As3] (4). All products were comprehensively characterized by single-crystal X-ray diffraction, FD-MS, and 1H NMR spectroscopy. A rational explanation for the different reactivity is also proposed and DFT calculations shed light on the nature of the highly flexible [Co2As4] cores.

Authors with CRIS profile

Martin Keilwerth Lehrstuhl für Anorganische und Allgemeine Chemie Karsten Meyer Lehrstuhl für Anorganische und Allgemeine Chemie

Involved external institutions

Universität Regensburg DE Germany (DE)

How to cite

APA:

Spitzer, F., Balazs, G., Grassl, C., Keilwerth, M., Meyer, K., & Scheer, M. (2018). The Influence of β-diiminato Ligands on As4 Activation by Cobalt Complexes. Angewandte Chemie International Edition, 57(28), 8760-8764. https://doi.org/10.1002/anie.201802888

MLA:

Spitzer, Fabian, et al. "The Influence of β-diiminato Ligands on As4 Activation by Cobalt Complexes." Angewandte Chemie International Edition 57.28 (2018): 8760-8764.

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