DECEPTIVELY SIMPLE PT COMPLEXES OF N,N-DIALKYL-N'-BENZOYLTHIOUREA - A H-1, C-13, AND PT-195 NMR-STUDY OF THEIR ACID-BASE CHEMISTRY IN SOLUTION AND THE MOLECULAR-STRUCTURE OF CIS-BIS(N,N'-DI(N-BUTYL)-N'-BENZOYLTHIOUREATO)PLATINUM(II)

被引:61
作者
IRVING, A [1 ]
KOCH, KR [1 ]
MATOETOE, M [1 ]
机构
[1] UNIV CAPE TOWN,DEPT CHEM,PRIVATE BAG RONDEBOSCH,CAPE TOWN 7700,SOUTH AFRICA
关键词
D O I
10.1016/S0020-1693(00)82866-2
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
N,N-Di(n-butyl)-N'-benzoylthiourea readily reacts with PtX42- to yield neutral cis-[PtL2] complexes for X=Cl- and Br-, while for X=I-, the protonated cis-[Pt(LH)2]I2 complex is isolated. The crystal structure of cis-[PtL2] is reported. In chloroform solution, the neutral cis-[PtL2] complexes may readily be protonated to yield a distribution of cis-[Pt(LH)L]+ and cis-[Pt(LH)2]2+ species which have been characterized by means of high resolution multinuclear NMR. Remarkably the Pt-195 chemical shift of the cationic species is strongly dependent on the nature of the uncoordinated anion (Cl-, Br-, I-) present, suggesting tight ion-pair formation in solution.
引用
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页码:193 / 199
页数:7
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