Platinum(<scp>II</scp>) complexes of nitroimidazoles: synthesis, characterisation, and X-ray crystal structures of cis-dichlorobis[1-(2′-hydroxyethyl)-2-hydroxymethyl-5-nitroimidazole]platinum(<scp>II</scp>) and trans-dichlorobis[1-(2′-hydroxy-3′-methoxypropyl)-2-nitroimidazole]platinum(<scp>II</scp>)
作者:John R. Bales、Muhammed A. Mazid、Peter J. Sadler、Aneel Aggarwal、Reiko Kuroda、Stephen Neidle、David W. Gilmour、Barry J. Peart、Christopher A. Ramsden
DOI:10.1039/dt9850000795
日期:——
propyl)-2-nitroimidazole]platinum(II)[monoclinic crystals: a= 8.134(1), b= 13.014(1), c= 11.323(2)Å, β= 91.469(9)°, Z= 2, space group P21/a]. This complex showed an unusual loss of planarity between the nitro-group and the imidazole ring, giving a dihedral angle of 45.6°. The geometry of the 4-nitroimidazole complexes was not determined. Co-ordination of the nitroimidazole ligand to PtII lowered the
已经通过包括195 Pt nmr光谱法在内的多种方法制备并表征了一系列[PtL 2 X 2 ]类型的配合物(其中L是取代的5-硝基咪唑,X 2是二卤化物或二羧酸盐)。这些5-硝基咪唑配合物具有顺式立体化学,例如通过X-射线晶体结构测定顺式-二氯双[1-(2'-羟乙基)-2-羟甲基-5-硝基咪唑]铂(II)[斜方晶体:a = 8.643(1),b = 24.052(3),c = 9.119(1)Å,Z = 4,空间组Pcan]。另外,制备了2-和4-硝基咪唑的许多类似的络合物。2-硝基咪唑似乎形成了热力学上有利的反式配合物,而不是动力学上有利的顺式产物。这证实了反-dichlorobis [1-(2'-羟基-3'-甲氧基丙基)-2-硝基咪唑]铂(II)[斜晶体:一个= 8.134(1),b = 13.014(1),C ^ = 11.323(2)Å,β= 91.469(9)°,Z = 2,空间群P