SYNTHESIS AND CRYSTAL-STRUCTURE OF THE FIRST TRINUCLEAR CHLORIDE-BRIDGED PLATINUM(II) COMPLEX WITH MUTUALLY PERPENDICULAR COORDINATION PLANES - CYCLO-TRI-MU-CHLORO-TRIS[CHLORO(1-HYDROXY-1-IMINO-2,2-DIMETHYLPROPANE)PLATINUM(II)]-DICHLOROMETHANE(0.5/1)

被引:10
作者
CINI, R [1 ]
INTINI, FP [1 ]
NATILE, G [1 ]
PACIFICO, C [1 ]
机构
[1] UNIV BARI, DIPARTIMENTO FARMACOCHIM, I-70125 BARI, ITALY
来源
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 1994年 / 24期
关键词
D O I
10.1039/dt9940003753
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The first trinuclear chloride-bridged platinum(II) compound has been obtained by disproportionation of cis-[{PtCl2[HN=C(OH)C(CH3)(3)](2)}(2)] 1. Two compounds result from the disproportionation, which contain one and three amide molecules per platinum atom (compounds 2 and 3 respectively). Compound 2, which crystallizes from dichloromethane as orange hexagonal prisms, contains discrete molecules of [{PtCl2[HN=C(OH)C(CH3)(3)]}(3)]. The coordination geometry of each metal centre is square planar; two cis positions are occupied by bridging chloride ions, and a terminal chloride and the nitrogen atom of an amide ligand (iminol form) complete the co-ordination sphere. The co-ordination planes of the three platinum atoms are mutually perpendicular with a dihedral angle of 99.2(2)degrees. The structure is strongly related to that of the beta form of PtCl2 (Pt6Cl12 molecules). Compound 2 incorporates exactly one half of the Pt6Cl12 cube and saturates the vacant co-ordination sites, made available by splitting of the bridges across the two halves of the cube, with amide ligands. The complex, as a whole, assumes a calyx-type shape and two molecules of complex take up one molecule of solvent (CH2Cl2).
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页码:3753 / 3758
页数:6
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