ISSN:
0009-2940
Keywords:
Platinum
;
Ruthenium
;
Cluster anions
;
Phosphanes
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The reactions of [Pt3Ru6(CO)21(μ-H)3(μ3-H)] (1) with PMe3 and PPh3 have produced the salts [Pt(PR3)3H]-[Pt3Ru6(CO)21(μ3-H)(μ-H)2], 5a and 5d, R = Me and Ph in the yields 9% and 22%, respectively. By contrast the reaction of 1 with PPh3 in the presence of Me3NO has yielded the phosphane-substituted derivative [Pt3Ru6(CO)20(PPh3)μ-H)3(μ3-H)] }(6) in 22% yield. Compounds 5a and 6 were characterized by single crystal X-ray diffraction analysis. Compounds 5a and 5d are salts of the anion [Pt3Ru6(CO)21(μ3-H)(μ-H)2]-. The anion contains a layer segregated Ru3Pt3Ru3 structure similar to that of 1 with two bridging hydride ligands on one Ru3 triangle and one semi-triply bridging hydride ligand on the other. The cation [Pt(PR3)3H]+ was evidently formed by the abstraction of platinum from other molecules of 1. Compound 6 is a PPh3 derivative of the parent 1 that also contains the layer segregated stacking of Ru3 and Pt3 triangles. The PPh3 ligand is coordinated to one of the ruthenium atoms in an axial position.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19971300609
