Hauer, Sebastian and Balazs, Gabor and Reitz, Justus and Hansmann, Max M. and Wolf, Robert (2026) Coordination Studies of a Triazole-Substituted 3H-1,2,4-Diazaphosphole: C-C and C-N Bond Activation Induced by Cobalt(0) and Nickel(0) Complexes. ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 652 (2). e202500167. ISSN 0044-2313, 1521-3749
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The reactivity of the recently reported 3H-1,2,4-diazaphosphole 1 toward electron-rich Ni and Co complexes is described. Compound 1 reacts with [Ni(cod)2] (cod = 1,5-cyclooctadiene) to afford complex 2, which features a 1,2,3-triazole-4-ylidene-type carbene ligand derived from the cleavage of the C-C(Ph) bond in 1. In contrast, [(IPr)Ni(vtms)2] induces N-C(iPr) bond cleavage of the 1,2,3-triazole part of 1 (IPr = 1,3-bis(2,6-diisopropylphenyl)imidazolin-2-ylidene; vtms = H2C=CH(SiMe3)). The resulting Ni(II) complex 3 additionally features a CH2CH2SiMe3 ligand, resulting from a formal H atom transfer to a vtms ligand. Analogous N-C(iPr) bond activations are observed in the reactions of 1 toward [(NHC)Co(vtms)2] (NHC = IPr or IMes; IMes = 1,3-bis(2,4,6-trimethylphenyl)imidazolin-2-ylidene). However, no H atom transfer is observed in this case, and one vtms ligand is retained in the resulting Co(I) complexes 4 and 5. The Ni(II) complexes 2 and 3 have square planar molecular structures and are diamagnetic, whereas the Co(I) centers in 4 and 5 exhibit tetrahedral coordination environments, leading to paramagnetic behavior.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | RAY STRUCTURAL-CHARACTERIZATION; 1,2,4-DIAZAPHOSPHOLIDE COMPLEXES; HETEROCYCLIC CARBENE; PHOSPHORUS-COMPOUNDS; STABLE PHOSPHAALKYNE; ORGANIC-CHEMISTRY; BASIS-SETS; LIGANDS; TRANSITION; 1H-1,2,4-DIAZAPHOSPHOLES; bond activation; cobalt; nickel; nitrogen heterocycles; phosphorus heterocycles |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie > Arbeitskreis Prof. Dr. Robert Wolf |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 12 Aug 2026 06:28 |
| Last Modified: | 12 Aug 2026 06:28 |
| URI: | https://pred.uni-regensburg.de/id/eprint/66199 |
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