Complexes of N-thiophosphorylthiourea (EtO)2P(O)CH2C6H4-4-[NHC(S)NHP(S)(OiPr)2] with Zn(II), Cd(II), Co(II) and Cu(PPh3)(I)

Reaction of O,O’-diisopropylthiophosphoric acid isothiocyanate (iPrO)2P(S)NCS with diethyl 4-aminobenzylphosphonate (EtO)2P(O)CH2C6H4-4-NH2 leads to the new N-thiophosphorylated thiourea (EtO)2P(O)CH2C6H4-4-[NHC(S)NHP(S)(OiPr)2] (HL). Reaction of the potassium salt of HL with Zn(II), Cd(II) and Co(II) in aqueous EtOH leads to complexes of formula M(L-S,S’)2 (ML2). Heteroligand copper(I) complex of HL and triphenylphosphine was prepared by the reaction of the potassium salt KL and Cu(PPh3)3I. Copper in complex Cu(PPh3)L is bound by one PPh3 and one SCNPS fragment of the chelating ligand. Compounds obtained were investigated by IR, UV–Vis, 1H and 31P{1H} NMR spectroscopy, and microanalysis. The structures of HL and Cu(PPh3)L were investigated by single crystal X-ray diffraction analysis.

Graphical abstractReaction of O,O’-diisopropylthiophosphoric acid isothiocyanate (iPrO)2P(S)NCS with diethyl 4-aminobenzylphosphonate (EtO)2P(O)CH2C6H4-4-NH2 leads to the new N-thiophosphorylated thiourea (EtO)2P(O)CH2C6H4-4-[NHC(S)NHP(S)(OiPr)2] (HL). Reaction of the potassium salt of HL with Zn(II), Cd(II) and Co(II) in aqueous EtOH leads to complexes of formula M(L-S,S′)2 (ML2). Heteroligand copper(I) complex of HL and triphenylphosphine was prepared by the reaction of the potassium salt KL and Cu(PPh3)3I. Copper in complex Cu(PPh3)L is bound by one PPh3 and one SCNPS fragmnet of the chelating ligand. Compounds obtained were investigated by IR, UV–Vis, 1H and 31P{1H} NMR spectroscopy, and microanalysis. The structures of HL and Cu(PPh3)L were investigated by single crystal X-ray diffraction analysis.Figure optionsDownload full-size imageDownload as PowerPoint slide