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Synthesis and X‐ray Structures of [Os 3 Pt(CO) 9 (μ 4 ‐η 2 ‐C≡CPh)(η 1 ‐C≡CPh)(L)] (L = 4,4′‐Dimethyl‐2,2′‐bipyridine, 4,4′‐bis( tert ‐butyl)‐2,2′‐bipyridine): New Heterometallic Clusters with a μ 4 ‐η 2 ‐ and an η 1 ‐Acetylide Group on a Spiked‐Triangular Metal Core
Author(s) -
Wong WaiYeung,
Ting FaiLung,
Lam WaiLim
Publication year - 2001
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/1099-0682(200103)2001:3<623::aid-ejic623>3.0.co;2-a
Subject(s) - osmium , chemistry , moiety , platinum , bipyridine , 2,2' bipyridine , ruthenium , metal , stereochemistry , crystallography , medicinal chemistry , crystal structure , catalysis , organic chemistry
Treatment of [Os 3 (CO) 10 (NCMe) 2 ] with platinum bis(alkynyl) complexes cis ‐[Pt(C≡CPh) 2 (L)] [L = 4,4′‐dimethyl‐2,2′‐bipyridine (Me 2 bipy), 4,4′‐bis( tert ‐butyl)‐2,2′‐bipyridine ( t Bu 2 bipy)] at room temperature readily affords the novel, spiked‐triangular heterometallic cluster complexes [Os 3 Pt(CO) 9 (μ 4 ‐η 2 ‐C≡CPh)(η 1 ‐C≡CPh)(L)] (L = Me 2 bipy 1 , t Bu 2 bipy 2 ) in moderate yields. X‐ray analysis of both complexes reveals that one alkynyl moiety is coordinated to the metal atoms in a μ 4 ‐η 2 (||) mode, accompanied by a concomitant transfer of an η 1 ‐C≡CPh group from the platinum centre to the osmium atom to give a metal framework with an osmium atom apically bonded to an Os 2 Pt triangle.