~1H, ~(13)C, ~(195)Pt and ~(15)N NMR structural correlations in Pd(II) and Pt(II) chloride complexes with various alkyl and aryl derivatives of 2,2′-bipyridine and 1,10-phenanthroline

摘要

~1H, ~(13)C, ~(195)Pt and ~(15)N NMR studies of platinide(II) (M = Pd, Pt) chloride complexes with such alkyl and aryl derivatives of 2,2′-bipyridine and 1,10-phenanthroline as LL = 6,6′-dimethyl-bpy, 5,5′-dimethyl-bpy, 4,4′-di-tert-butyl-bpy, 2,9-dimethyl-phen, 2,9-dimethyl-4,7-diphenyl-phen, 3,4,7,8-tetramethyl-phen, having the general [M(LL)Cl_2] formula were performed and the respective chemical shifts (δ~(1H), δ~(13C), δ~(195Pt), δ~(15N)) reported. ~1H high-frequency coordination shifts (Δ_(coord)~1H = δ_(complex)~(1H) - δ_(ligand)~(1H)) mostly pronounced for nitrogen-adjacent protons and methyl groups in the nearest adjacency of nitrogen, as well as ~(15)N low-frequency coordination shifts (Δ_(coord)~(15N) = δ_(complex)_~(15N) - δ_(ligand)~(15N)) were discussed in relation to the molecular structures.