Syntheses and Crystal Structures of Two Thiolato-Organophosphino Cobalt(II) Complexes, (Et4N)[Co(SC6H5)3(PPh3)] and [Co(S-m-C6H4CH3)2(Ph2PCH2CH2P(Ph)CH2CH2PPh2)

Abstract

Abstract (Et4N)[Co(SC6H5)3(PPh3)] (1) and the neutral complex [Co(S-m-C6H4CH3)2(Ph2PCH2CH2P(Ph)-CH2CH2PPh2)] (2) have been prepared by reaction of CoCl2, NaSR (R = C6H5, m-C6H4CH3) and an organophosphine PPh3, dppep) in methanol. Red crystals of compound 1 are triclinic, space group P 1 with cell dimensions a= 11.284(5), b = 11.987(5), c = 15.929(5) A, α = 91.33(3), β = 96.51(2), γ = 105.42(4)[ddot], Z = 2, Dc = 1.255 g cm−3, R = 0.063 for 1905 observed reflections. The CoPS3 core possesses a distorted trigonal pyramidal geometry. Average distances (Co-S) are 2.262 A and (Co-P) 2.366(2) A. Black crystals of compound 2 are monoclinic, space group P21/c with cell dimensions a = 11.024(3), b = 28.061(2), c = 14.895(2) A, β = 104.59(1)[ddot], Z = 4, Dc = 1.263 g cm−3, R = 0.071 for 2021 reflections. The CoP3S2 core of 2 forms a trigonal bipyramid with average (Co-S) distances of 2.247 A and (Co-P) of 2.241 A.