Coordination diversity of N-phosphorylated amides and ureas towards viiib group cations

The behavior of ambidentate organophosphorus ligands is of general interest because the nature of the phosphorus-element bond influences directly on the structure of chelate complexes of these compounds. Reasons allowing the polyfunctional ligands to bind metal cations using different coordination modes, closely address the fundamental questions of chemistry, such as the nature of chemical bonding and the isomerism of coordination compounds, or the influence of the ligand structure on regioselectivity of the coordination bond formation and definition of a role of weak intramolecular interactions in the structure stabilization. In the framework of the presented review the information about ambidentate coordination properties of N-Thiophosphorylated thioamides, thioureas of common formula RC(X)NHP(Y)R'2 towards VIIIB group metal cations Co(II), Ni(II), Pt(II) and Pd(II) were summarized and discussed in comparison with organic and diphosphorus analogues: (i) N-acylamides and ureas of common formula RC(X)NHC(Y)R' (NAAU), and (ii) dichalcogenoimididiphosphinates R2P(X)NHP(Y)R'2 (IDP) (X, Y = O, S, Se).© 2008 by Nova Science Publishers, Inc. All rights reserved

Studies on cobalt(II) complexes with N-thioacylamido(thio)phosphates: X-ray crystal structure of the Co[PhC(S)NP(S)(OPri)2]2

Reaction of the potassium salts of N-thioacylamidophosphates RC(S)NHP(O)(OPri)2 (R = Ph, PhNH, p-MeOPhNH, p-BrPhNH, iPrNH, tBuNH, Et2N, c-C5H10N, c-OC4H8N, c-C5H11NH) with Co(II) cation in aqueous EtOH leads to the complexes of Co(L-O,S)2 type structure. Complexes Co(B)L2 were obtained by the reaction of chelate complexes CoL2 (R = Ph, PhNH) with 2,2′-bipyridine and 1,10-phenanthroline. Structures of the compounds obtained were investigated by EIMS, IR, UV-Vis spectroscopy and microanalysis. Complex Co[PhC(S)NP(S)(OPri)]2 was investigated by single crystal X-ray diffraction. © 2006 Elsevier Ltd. All rights reserved

Synthesis and crystal structure of complexes of bipodal thiophosphorylated thioureas with divalent transition metals

According to X-ray crystallography, the title compounds exist as metallomacrocycles in the crystal. © 2004 Elsevier Ltd. All rights reserved

Self-assembly of the complexes of bipodal thiophosphorylated thioureas

N-Thiophosphorylated thioureas, of general formula [(i-PrO)2 P(S)NHC(S)]2Z (Z = α,ω-diamino(oxy)alkyl or 1,10-diaza-18-crown-6), in the form of potassium salts, react with a number of soft ions (Cd2+, Zn2+, Co2+, Ni2+, Pd2+) to form novel dimeric complexes. The cadmium (Z = HN(CH2)2NH), palladium (Z = HN(CH2)2O(CH2)2NH), and cobalt (Z = 1,10-diaza-18-crown-6) complexes were analyzed by x-ray crystallography. In the former complex, crown cavities remain free. This fact will allow us to obtain "guest-host" complexes with alkali metal cations

A "sodium trap" based on benzo-15-crown-5 with an exocyclic N-(thiophosphoryl)thiourea moiety

For N-(thio)phosphorylthioureas of the common formula RC(S)NHP(X)(OiPr)2 HLI (R = N-(4′-aminobenzo-15-crown-5), X = S), HLII (R = N-(4′-aminobenzo-15-crown-5), X = O), HLIII (R = PhNH, X = S), HLIV (R = PhNH, X = O), and (N,N′-bis-[C(S)NHP(S)(OiPr)2]2-1,10-diaza-18-crown-6) H2LV, salts LiLI,III,IV, NaLI-IV, KLI-IV M2LV (M = Li+, Na+, K+), Ba(LI,III,IV)2, and BaLV have been synthesized and investigated. Compounds NaLI,II quantitatively drop out as a deposit in ethanol medium, allowing the separation of Na+ and K+ cations. This effect is not displayed for the other compounds. The crystal structures of HLIII and the solvate of the composition [K(Me2CO)LIII] have been investigated by X-ray crystallography. © 2006 Elsevier Ltd. All rights reserved

Specific features of the structure of chelate complexes of N-thiocarbamoylamidophosphates with Zn(II) and Cd(II) cations

The reaction of potassium salts of N-thiocarbamoylamidophosphates RC(S)NHP(O)(OPr-i)2X [X = PhNH, p-MeOPhNH, p-BrPhNH, i-PrNH, t-BuNH, Et2N, C5H10N, OC4H8N, C 6H11NH] with Zn(II) cation gives complexes of the composition Zn(L-O,S)2. The Cd(II) complexes could not be isolated under analogous conditions because of their hydrolytic lability. The reaction of thioureas (X = PhNH, p-MeOPhNH) with Cd(II) acetate in DMF provides stable solvato complexes of the composition Cd(DMF)2L2. The structure of the resulting compounds was studied by means of IR, 1H, and 31P NMR spectroscopy and EI and ESI mass spectrometry. © 2005 Pleiades Publishing Inc

Coordination diversity of N-phosphorylated amides and ureas towards viiib group cations

The behavior of ambidentate organophosphorus ligands is of general interest because the nature of the phosphorus-element bond influences directly on the structure of chelate complexes of these compounds. Reasons allowing the polyfunctional ligands to bind metal cations using different coordination modes, closely address the fundamental questions of chemistry, such as the nature of chemical bonding and the isomerism of coordination compounds, or the influence of the ligand structure on regioselectivity of the coordination bond formation and definition of a role of weak intramolecular interactions in the structure stabilization. In the framework of the presented review the information about ambidentate coordination properties of N-Thiophosphorylated thioamides, thioureas of common formula RC(X)NHP(Y)R'2 towards VIIIB group metal cations Co(II), Ni(II), Pt(II) and Pd(II) were summarized and discussed in comparison with organic and diphosphorus analogues: (i) N-acylamides and ureas of common formula RC(X)NHC(Y)R' (NAAU), and (ii) dichalcogenoimididiphosphinates R2P(X)NHP(Y)R'2 (IDP) (X, Y = O, S, Se).© 2008 by Nova Science Publishers, Inc. All rights reserved

Specific features of the structure of chelate complexes of N-thiocarbamoylamidophosphates with Zn(II) and Cd(II) cations

The reaction of potassium salts of N-thiocarbamoylamidophosphates RC(S)NHP(O)(OPr-i)2X [X = PhNH, p-MeOPhNH, p-BrPhNH, i-PrNH, t-BuNH, Et2N, C5H10N, OC4H8N, C 6H11NH] with Zn(II) cation gives complexes of the composition Zn(L-O,S)2. The Cd(II) complexes could not be isolated under analogous conditions because of their hydrolytic lability. The reaction of thioureas (X = PhNH, p-MeOPhNH) with Cd(II) acetate in DMF provides stable solvato complexes of the composition Cd(DMF)2L2. The structure of the resulting compounds was studied by means of IR, 1H, and 31P NMR spectroscopy and EI and ESI mass spectrometry. © 2005 Pleiades Publishing Inc