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Reactions of Pt 3 Ru 6 (CO) 2 (μ 3 ‐H)(μ‐H) 3 with Phos[phanes — The Synthesis and Structural Characterizations of [Pt(PMe 3 ) 3 H][Pt 3 Ru 6 (CO) 21 (μ 3 ‐H)(μ‐H) 2 ] and [Pt 3 Ru 6 (CO) 20 (PPh 3 )(μ‐H) 3 (μ 3 H)]
Author(s) -
Adams Richard D.,
Barnard Thomas S.,
Li Zhaoyang,
Zhang Lijuan
Publication year - 1997
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19971300609
Subject(s) - chemistry , hydride , ruthenium , platinum , ligand (biochemistry) , crystal structure , molecule , crystallography , derivative (finance) , stereochemistry , medicinal chemistry , metal , catalysis , biochemistry , receptor , organic chemistry , financial economics , economics
The reactions of [Pt 3 Ru 6 (CO) 21 (μ‐H) 3 (μ 3 ‐H)] ( 1 ) with PMe 3 and PPh 3 have produced the salts [Pt(PR 3 ) 3 H]‐[Pt 3 Ru 6 (CO) 21 (μ 3 ‐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 PPh 3 in the presence of Me 3 NO has yielded the phosphane‐substituted derivative [Pt 3 Ru 6 (CO) 20 (PPh 3 )μ‐H) 3 (μ 3 ‐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 [Pt 3 Ru 6 (CO) 21 (μ 3 ‐H)(μ‐H) 2 ] − . The anion contains a layer segregated Ru 3 Pt 3 Ru 3 structure similar to that of 1 with two bridging hydride ligands on one Ru 3 triangle and one semi‐triply bridging hydride ligand on the other. The cation [Pt(PR 3 ) 3 H] + was evidently formed by the abstraction of platinum from other molecules of 1 . Compound 6 is a PPh 3 derivative of the parent 1 that also contains the layer segregated stacking of Ru 3 and Pt 3 triangles. The PPh 3 ligand is coordinated to one of the ruthenium atoms in an axial position.