Abstract
Reactions of the dinuclear palladium(I) complex [Pd2Cl2(RNC)4](R = 2,4,6-Me3C6H2)1 with the N-donor compounds 2,2′-bipyridyl (bipy), 1,10-phenanthroline (phen), and 2,9-dimethyl-1,10-phenanthroline (dmphen) gave dipalladium(I) complexes with chelating N-donor ligands, [Pd2(RNC)2L2][PF6]2(L = bipy 2, phen 3 or dmphen 4). The structures of 2 and 4 were characterized by X-ray crystallography. The cation of 2 is composed of two Pd atoms joined by a σ bond [2.518(3)A] each of which has a square-planar co-ordination involving a terminal isocyanide and a chelating bipy ligand. Complex 3 is expected to have a structure similar to 2 on the basis of spectroscopic data. Complex 4 exhibits a distorted dinuclear structure due to the steric bulk of the N-donor ligand. The Pd–Pd bond length is 2.599(2)A. Each dmphen ligand chelates to a Pd atom and the isocyanide acts as semibridging ligand. The similar reactions of complex 1 with 2,2′-biquinoline (bquin) and 1,8-naphthyridine (napy) afforded the isocyanide-bridged dipalladium(I) complexes, [Pd2(µ-RNC)2(bquin)2][PF6]25 and [Pd2(µ-NRC)2(napy)4][PF6]26, in 24–36% yields. Complex 6 comprises a dinuclear palladium(I) core bridged by two isocyanide ligands [Pd–Pd 2.747(4)A] with four terminal napy ligands co-ordinated in a monodentate fashion.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Chemical Society, Dalton Transactions
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
