Complexes of N-thiophosphorylthioureas RNHC(S)NHP(S)(OiPr)_2 (HL) (R = pyridin-2-yl, pyridin-3-yl, 6-amino-pyridin-2-y1) with copper(I): Crystal structures of Cu(PPh_3 )_nL (n = 1, 2)

摘要

Reaction of the potassium salts of N-thiophosphorylated thioureas of common formula RNHC(S)NHP(S)(OiPr)_2 [R=pyridin-2-yl(HL~a), pyridin-3-yl(HL~b), 6-amino-pyridin-2-yl (HL~c)] with Cu(PPh_3)_3I in aqueous EtOH/CH_2Cl_2 leads to mononuclear 1,Cu(PPh_3)_2L~(a.b)-S,S'] (1, 2) and [Cu(PPh_3)L~c-S,S'] (3) complexes. Using copper(I) iodide instead of Cu(PPh_3)_31, polynuclear complexes [Cu_n(L-S,S')_n] (4-6) were obtained. The structures of these compounds were investigated by IR, ~1H, ~(31)P(~1H) NMR spectroscopy, ES-MS and elemental analyses. The crystal structures of Cu(PPh_3)_2L~b (2) and Cu(PPh_3)L~c (3) were determined by single-crystal X-ray diffraction.