The reaction of O,O′-diisopropyl phosphorisothiocyanatidate, (iPrO)2P(O)NCS, with diethyl-(4-aminobenzyl)phosphonate leads to the new N-phosphorylated thiourea derivative, 4-[(EtO)2P(O)CH2]-C6H4NHC(S)NHP(O)(OiPr)2 (HL). The reaction of its potassium salt KL with Zn(II) or Co(II) in aqueous EtOH leads to the complexes of formulae M(L-O,S)2 (ZnL2, CoL2). The metal cation in all complexes is coordinated by two deprotonated ligands through the sulfur atoms of the thiocarbonyl groups and the oxygen atoms of the phosphoryl groups. The reaction of KL with Ni(II) leads to the formation of two types of complexes: the blue Ni(L-N,S)2 complex, where the ligand is coordinated through the nitrogen atom of the phosphorylamide group and the sulfur atom of the thiocarbonyl groups and light red Ni(L-O,S)2 complex with the same coordination of L– anion as it was observed for ZnL2 and CoL2. According to UV/Vis spectral data, it was established that the metal cation of Ni(L-N,S)2 is in a square-planar environment in CH2Cl2, whereas the Ni(L-O,S)2 complex shows features of tetrahedral complexes.
使用
O,
O′-
二异丙基磷酰
硫氰酸酯,(
iPrO)
2P(O)
NCS,与
二乙基-(4-
氨基苯基)
膦酸酯反应,得到新的
N-
磷酸化
硫脲衍
生物,4-[(EtO)
2P(O)CH
2]-C
6H
4NHC(S)NHP(O)(O
iPr)
2 (
HL)。其
钾盐
KL在
乙醇水溶液中与Zn(II)或Co(II)反应,形成式为M(L-
O,
S)
2(
ZnL2,
CoL2)的配合物。所有配合物中的
金属阳离子都通过
硫代
氨基羰基和
磷酰基羟基的氧原子与两个去质子化的
配体配位。
KL与Ni(II)反应,形成两种类型的配合物:蓝色的
Ni(L-N,
S)2配合物,其中
配体通过
磷酰胺基团的氮原子和
硫代
氨基羰基的
硫原子配位,以及浅红色的
Ni(L-O,
S)2配合物,其配位方式与
ZnL2和
CoL2中观察到的
L–阴离子的配位方式相同。根据UV/Vis光谱数据,确定了
Ni(L-N,
S)2的
金属阳离子在CH
2Cl
2中处于方平面环境,而
Ni(L-O,
S)2配合物显示出四面体配合物的特征。