Synthesis and Structural Characterization of Thiophosphinoyl Late-Transition-Metal and Divalent Lanthanide Complexes Derived from 2-Quinolyl-Linked (Thiophosphorano)methane

The synthesis and structural characterization of a series of late-transition-metal and divalent lanthanide complexes derived from 2-quinolyl-linked phosphoranosulfide CH2(iPr(2)P=S)(C9H6N-2) are reported. Metathesis of dimeric lithium complex [(Li{Et2O}{CH(iPr(2)P-S)(C9H6N-2)})(2)] (1) with CoCl2 (2 equiv.) afforded a heteroleptic cobalt(II) complex [(CoCl{CH(iPr(2)P=S)(2)(C9H6N-2)})(2)] (2). Treatment of potassium complex [(K{CH(iPr(2)P-S)(C9H6N-2)})(n)] (3) with MCl2 (M = Mn, Fe, Co; 1 equiv.) afforded homoleptic 2-quinolyl-linked (thiophosphorano)methanide metal(II) complexes, [M{CH(iPr(2)P-S)(2)(C9H6N-2)}(2)] [M = Mn (4), Fe (5), Co (6)]. Metathesis reaction of 3 with [YbI2(thf)(2)] and [EuI2(thf)(2)] (1 equiv.) afforded dimeric homoleptic ytterbium(II) complex [(Yb{CH(iPr(2)P-S)(C9H6N-2)}(2))(2)] (7) and europium(II) complex [(Eu{CH(iPr(2)P-S)(C9H6N-2)}(2))(2)] (8), respectively. The structures of 2 and 4-8 have been determined by X-ray crystallography. Furthermore, the magnetic susceptibility of compounds 4-6 have been determined by using Evan's method.