Copper(I) complexes with N-thiophosphorylated thioureas and phosphines with versatile structures and luminescence

Abstract

Reaction of the potassium salts of RC(S)NHP(S)(OiPr)₂ (R = MeNH, HL^I; iPrNH, HL^II; tBuNH, HL^III; Me₂N, HL^IV; PhNH, HL^V; 2,6-Me₂C₆H₃NH, HL^VI; 2,4,6-Me₃C₆H₂NH, HL^VII) with [Cu(PPh₃)₃I] or a mixture of CuI and Ph₂P(CH₂)_nPPh₂ (n = 1, 2, 3) in aqueous EtOH/CH₂Cl₂ leads to mononuclear 1–6, 8–10, 12–27 or binuclear 7, 11 complexes. The structures of these compounds were investigated by ¹H, ³¹P{¹H} NMR spectroscopy and elemental anayses. The crystal structures of 1, 2, 4, 5, 11, 18, 20 and 21 were determined by single crystal X-ray diffraction. The luminescence properties of mononuclear complexes 1, 21, 22 and 27, and binuclear complexes 7 and 11·C₃H₆O are reported.