Reaction of Phenyl Iso(thio)cyanate with N-Heterocyclic Carbene-Supported Nickel Complexes: Formation of Nickelacycles

Pelties, Stefan and Wolf, Robert (2016) Reaction of Phenyl Iso(thio)cyanate with N-Heterocyclic Carbene-Supported Nickel Complexes: Formation of Nickelacycles. ORGANOMETALLICS, 35 (16). pp. 2722-2727. ISSN 0276-7333, 1520-6041

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Abstract

The nickel(I) complex [(eta(5)-Cp)Ni(IPr)] (Cp = cyclopentadienyl, IPr = 1,3-bis(2,6-diisopropylphenyl)imidazolin-2-ylidene) reacts with phenyl isothiocyanate to afford the new heteronickelacycle [(IPr)NiSC(NPh)N(Ph)CS] (1), which contains the novel bidentate and dianionic ligand {SC(NPh)N(Ph)CS}(2-). Complex 1 is also obtained from the nickel(0) compound [(IPr)-Ni(styrene)(2)] with two equivalents of PhNCS. The gamma-lactam-nickelacycle [(IPr)NiN(Ph)C(O)CH2CH(Ph) (3) is formed from [(IPr)Ni(styrene)(2)] and one equivalent of phenyl isocyanate. Complex 3 is a rare example of a nickel(II) complex with a T-shaped structure. Compounds 1 and 3 were characterized by X-ray crystallography, H-1 and C-13 NMR spectroscopy, UV-vis spectroscopy, and elemental analysis.

Item Type: Article
Uncontrolled Keywords: METAL-ARENE INTERACTIONS; OXIDATIVE CYCLIZATION; MONOVALENT NICKEL; KEY INTERMEDIATE; AZA-NICKELACYCLE; ORGANIC ISOTHIOCYANATES; REDUCTIVE ELIMINATION; CORRELATION-ENERGY; CARBONYL-COMPLEX; INDENYL LIGANDS;
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: 05 Apr 2019 09:45
Last Modified: 05 Apr 2019 09:45
URI: https://pred.uni-regensburg.de/id/eprint/3467

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