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
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.
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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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