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Article: The series [Os.sub.4]([[mu].sub.x]-[[eta].sup.2]-[C.sub.2] [Ph.sub.2])[(CO).sub.14-n] (n = 0, 1, 2; x = n + 2)--models for site-specific surface catalyst (1).
- Article from:
- Canadian Journal of Chemistry
- Article date:
- February 1, 2006
- Author:
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Introduction
Alkynes form a plethora of complexes with group 8 metal carbonyls that have a remarkable structural diversity (1-3). For example, over 20 types of complexes have been isolated from the reaction of alkynes with [Fe.sub.3][(CO).sub.12]; they possess up to five metal atoms and three alkyne units (2, 4). Carty and co-workers (5, 6) have made notable contributions to the area, particularly alkyne derivatives of carbonyl clusters of ruthenium. The reaction of alkynes with [Os.sub.3][(CO).sub.12] also provides novel products (3, 7-10).
In contrast to [Os.sub.3][(CO).sub.12], the common carbonyl cluster of osmium (11), [Os.sub.4][(CO).sub.14] ...