|
Z. Naturforsch. 2014,
69b, 1299 – 1305
doi:10.5560/ZNB.2014-4150
Coordination Chemistry of N,N′-Bis(diphenylphosphanylmethyl)-2,3-dihydro-1H-perimidine – Lewis Acid-Base Complexes with the d10-Metals Nickel(0) and Gold(I)
Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstrasse 8, D-07743 Jena, Germany
Reprint requests to Prof. Dr. Matthias Westerhausen. Fax: +49 3641 948132. E-mail:
m.we@uni-jena.de
Received July 11, 2014 / published online December 19, 2014
Dedicated to Professor Hubert Schmidbaur on the occasion of his 80th birthday
The addition reactions of N,N′-bis(diphenylphosphanylmethyl)-2,3-dihydro-1H-perimidine (1) with [(cod)2Ni] and [(Ph3P)AuCl] yield yellow [(1)Ni(η4-cod)] (2) and colorless [(1)(Ph3P)AuCl]·3MeOH (3), respectively. In these transition metal complexes of nickel(0) and gold(I) 1 acts as a bidentate chelating ligand. Crystal structures of [(1)Ni(η4-cod)]·3THF (2a) and of cosolvent-free [(1)Ni(η4-cod)] (2) reveal a distorted tetrahedral environment of the nickel atom. The gold(I) atom in 3 exhibits a very long Au–Cl bond of 296.2(1) pm. In contrast to the nickel complexes, compound 3 shows strong agostic interactions between gold(I) and a methylene fragment.
Key words: Nickel, Gold, Perimidine, Phosphane Oxides, Phosphanes, Agostic Interactions