The complex (eta(2),eta(2)-1,5-COD)(eta(6)-1,3,5-COT)(1)dagger reacted
with 1,4,7-trithiacyclononane (9S3) in the presence of 1-2 mol equiv.
of HPF6 to give a eta(2),eta(3)-cyclooctadienyl complex [Ru(1-3:5,6 e
ta-C8H11)(9S3)]PF6 (3) as the main product, together with compounds co
ntaining the cations [Ru(eta(2),eta(2)-1,5-COD)(9S3)(L)](2+) [L = H2O
(4a), THF (4b)]. The latter are formed reversibly from 3 in the presen
ce of an excess of HPF6, and are converted by acetonitrile into [Ru(et
a(2),eta(2)-1,5-COD)(9S3)(NCMe)](2+) (5). The structures of 3 and of t
he PF6 and PO2F2 salts of 5 have been determined by X-ray crystallogra
phy. Copyright (C) 1996 Elsevier Science Ltd