✦ LIBER ✦

1,2,3-Selenadiazoles as precursors to cyclopentadienylcobalt dithiolenes and 1,4-dithiins: molecular structures of bis(cycloocteno)-1,4-dithiin and bis(cycloocteno)-1,4-diselenin

✍ Scribed by Michael R. J. Dorrity; Ann Lavery; John F. Malone; Christopher P. Morley; Richard R. Vaughan

Publisher: John Wiley and Sons
Year: 1992
Tongue: English
Weight: 397 KB
Volume: 3
Category: Article
ISSN: 1042-7163
DOI: 10.1002/hc.520030203

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✦ Synopsis

Cycloocteno-l,2,3-.seIenadiazole (1) and cyclopentadienyldicurbonylcobalt (2) react in the presence of an excess of elemental sulfur to yield the dithiolene cyclopentudicwyl( 1,2-cyclooctenedith io1ato)cobalt (3). Available evidence indicates that this reaction involves the intermediacy of a cobalt-alkyne complex. Compound 3 is the first example o f a cyclopentadienylcohalt dithiolene bearing aliphatic substituents. Analogous reactions performed using only catalytic quantities of 2 provide high-yield syntheses of bis(cyc1oocteno)-I ,4-dithiin (6) and bis(cyc1oocteno)-I ,4-diselenin (7), whose structures have been determined bv X-ray difraction.

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