Synthesis and structural characterization of some arylamidinium diphenylphosphinates: Formation of one-, two- and three-dimensional networks by charge-assisted hydrogen bonds

Abstract

In the presence of air, the interaction of AgSO 3CF 3 with phosphorus–nitrogen π-electron-rich compounds ArC( NPPh 2)[N(SiMe 3) 2] (Ar = phenyl, p-tolyl, 4-pyridyl, 3-pyridyl and 2-pyridyl) and 1,4-C 6H 4{C( NPPh 2)[N(SiMe 3) 2]} 2 in acetonitrile led to the formation of metallic silver and the oxidative cleavage product {[ArC(NH 2) 2](Ph 2PO 2)} n (Ar = phenyl, 1; p-tolyl, 2; 4-pyridyl, 3; 3-pyridyl, 4; 2-pyridyl, 5) and [{1,4-C 6H 4[C(NH 2) 2] 2}(Ph 2PO 2) 2] n ( 6), respectively. Structural analyses of compounds 1– 6 revealed that these ionic salts are held together by charge-assisted hydrogen bonds forming 1D, 2D and 3D polymeric networks.