Synthesis and structural characterization of adducts of silver(I) perchlorate with PR3 (R=Ph, cy, o-tolyl) and oligodentate aromatic bases derivative of 2,2′-bipyridyl, L, AgClO4:PR3:L (1:1:1)

Abstract: Ten novel adducts of the form AgClO4:PR3:L (1:1:1) (R=Ph, cy, o-tolyl; L=2,2′-bipyridyl (‘bpy’), 2,2′-biquinoline (‘bq’), bis(2-pyridyl)amine (‘dpa’), bis(2-picolyl)amine (‘dpca’)) have been synthesized and characterized by analytical, spectroscopic (IR, far-IR, 1H and 31P NMR) and single crystal X-ray diffraction studies. The solid state molecular structures show that the complexes predominantly take the form [(R3P)AgL]+X−, with a trigonal PAgN2 coordination environment, where the approach of the anion or the solvent may perturb the planarity of the silver environment. The ClO4 anion shows uni- or semi-bidentate coordination, except in the complexes AgClO4:PR3:dpca (1:1:1) (R=Ph and o-tolyl), where the anion remains uncoordinated and the dpca donor is a three-coordinate pincer-like ligand. [Copyright &y& Elsevier]