Reaction of the potassium salts of N-phosphorylated thioureas of common formula R1âN(H)âC(S)âN(H)âP(O)(OiPr)2 (HA) with NiII and PdII cations leads to [MA2] chelate complexes (M = NiII, R1 = p-MeOC6H4, p-BrC6H4, t-Bu, c-Hex; M = PdII, R = iPr). In both the NiII and PdII complexes, the metal center is found in a square-planar N2S2 environment formed by the CS sulfur atoms and the PâN nitrogen atoms of two deprotonated ligands Aâ. The PdII atoms in [PdB2] complexes with deprotonated thioureas of common formula R2âC(S)âN(H)âP(O)(OiPr)2 (HB) (R2 = Et2N, morpholine-N-yl) are coordinated in a square-planar fashion by the CS sulfur atoms and the PO oxygen atoms of two anionic ligands. Molecular structures of four complexes [M(A-N,S)2] (M = NiII, R1 = p-MeOC6H4, p-BrC6H4, t-Bu; M = PdII, R1 = iPr) and the palladium(II) 1,5-O,S-chelate of formula [Pd(B-O,S)2] (R2 = morpholine-N-yl) were elucidated by X-ray diffraction.
通式为 R1âN(H)âC(S)âN(H)âP(O)(OiPr)2 (HA) 的 N-
磷酸化
硫脲的
钾盐与 NiII 和 PdII 阳离子反应生成 [MA2] 螯合物(M = NiII,R1 = p-MeOC6H4、p-BrC6H4、t-Bu、c-Hex;M = PdII,R = iPr)。在 NiII 和 PdII 复合物中,
金属中心都位于由 CS
硫原子和两个去质子化
配体 Aâ 的 PâN 氮原子形成的方形平面 N2S2 环境中。[PdB2]配合物中的
钯二原子与通式为 R2âC(S)âN(H)âP(O)(OiPr)2 (HB)(R2 = Et2N,吗啉-N-基)的去质子化
硫脲以方形平面的方式由 CS
硫原子和两个阴离子
配体的 PO 氧原子配位。通过 X 射线衍射阐明了四种配合物 [M(A-N,S)2](M = NiII,R1 = p-MeOC6H4、p-BrC6H4、t-Bu;M = PdII,R1 = iPr)和式为 [Pd(B-O,S)2](R2 = 吗啉-N-基)的 1,5-O,S-螯合
钯(II)的分子结构。