Unsupported metal chain complex: Synthesis, characterization, and EHMO study involving the tetraosmium complex [Os-2(CO)(5)(thd)(2)](2)

Authors
Su, MD Liao, HY Chu, SY Chi, Y Liu, CS Lee, FJ Peng, SM Lee, GH
Citation
Md. Su et al., Unsupported metal chain complex: Synthesis, characterization, and EHMO study involving the tetraosmium complex [Os-2(CO)(5)(thd)(2)](2), ORGANOMETAL, 19(25), 2000, pp. 5400-5403
Citations number
24
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
ORGANOMETALLICS
ISSN journal
02767333 → ACNP
Volume
19
Issue
25
Year of publication
2000
Pages
5400 - 5403
Database
ISI
SICI code
0276-7333(200012)19:25<5400:UMCCSC>2.0.ZU;2-R
Abstract
Metal carbonyl complex Os-3(CO)(12) reacts with a hexane solution of (thd)H , thd = 2,2-dimethyl-3,5-heptanedionate, in a sealed autoclave at 190 degre esC to afford the Os-4 metal chain complex [Os-2(CO)(5)(thd)(2)](2) (1), is olated from repeated recrystallization in air. Treatment of 1 with CO at ro om temperature gives the Os-2 metal complex [Os-2(CO)(6)(thd)(2)] (2) throu gh reversible cleavage of the central Os-Os bond. EHMO calculation has been carried out to explain the involvement of a short-long-short Os-Os Os-Os a rray.