THE RELATIONSHIP BETWEEN THE MOLECULAR-STRUCTURE OF [3,3-(PME(2)PH)(2)-CLOSO-3,1,2-PTC2B9H11] AND THE MECHANISM OF THE FLUXIONAL BEHAVIOR OF M(PR(3))(2)-UNITS IN CLOSE-12-ATOM METALLAHETEROBORANES

被引：7
|
作者：
OCONNELL, D
SPALDING, TR
FERGUSON, G
GALLAGHER, JF
KENNEDY, JD
机构：
[1] UNIV COLL CORK,DEPT CHEM,CORK,IRELAND
[2] UNIV GUELPH,DEPT CHEM,GUELPH,ON N1G 2W1,CANADA
[3] DUBLIN CITY UNIV,DEPT CHEM,DUBLIN 9,IRELAND
[4] UNIV LEEDS,SCH CHEM,LEEDS LS2 9JT,W YORKSHIRE,ENGLAND
来源：
JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1995年 / 503卷 / 01期
基金：
加拿大自然科学与工程研究理事会;
关键词：
PLATINUM; CARBORANE; METALLACARBORANE; FLUXIONALITY; CRYSTAL STRUCTURE; MECHANISM;
D O I：
10.1016/0022-328X(95)05718-5
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The upper Limit of the free energy of the barrier to rotation of the platinum bis-phosphine unit in [3,3-(PMe(2)Ph)(2)-closo-3,12-PtC2B9H11] 1 is < 30 kJ mol(-1) in dichloromethane solution. This relatively low value is similar in magnitude to crystal-packing forces, and compound 1 crystallises from CH2Cl2-hexane solution as a 1:1 mixture of two different conformers with significantly different platinum-to-C2B3 bonding. These observations lead to the proposal of a general mechanism for the mutual rotation of {M(PR(3))(2)} units above C2B9H11.
引用
收藏
页码：C12 / C15
页数：4
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