Dinuclear thioether half-sandwich ruthenium(II) complexes of the types [{RuL′([9]aneS3)}2(µ-L)n]2+(n= 1, L′= PPh3; n= 2, L′= MeCN), [{Ru([9]aneS3)}2(µ-L)2]2+ and [{Ru([9]aneS3)}2(µ-L)3]+ with heterocyclic thioamides L ([9]aneS3= 1,4,7-trithiacyclononane)
Abstract
Reaction of [Ru(MeCN)3([9]aneS3-κ3S)][CF3SO3]2([9]aneS3= 1,4,7-trithiacyclononane) with 1,3-benzothiazol-2-thione (Hbtt) and pyridine-2-thione (Hpyt) in methanol in a 1 : 1 molar ratio afforded dinuclear complexes [{Ru([9]aneS3-κ3S)}2(µ-L)2][CF3SO3]2(L = btt or pyt) in which the ligands exhibit a tridentate µ-1κS:2κ2N,S bridging mode. Crystallization of the btt complex from acetonitrile yielded [{Ru(MeCN)([9]aneS3-κ3S)}2(µ-btt)2][CF3SO3]2 with µ-S bridging ligands. A triply µ-S bridged complex [{Ru([9]aneS3-κ3S)}2(µ-btt)3][CF3SO3] was obtained from [Ru(MeCN)3([9]aneS3-κ3S)][CF3SO3]2 and btt– in a 2 : 3 molar ratio. Fragments (Ph3P)([9]aneS3-κ3S)RuII can be bridged with tetra- or tri-dentate dtuc2–(H2dtuc = 2,4-dithiouracil) anions in [{Ru(PPh3)([9]aneS3-κ3S)}2(µ-dtuc)]2+ and [{RuCl(PPh3)([9]aneS3-κ3S)}(µ-dtuc){Ru(PPh3)([9]aneS3-κ3S)}]+. The structures of four complexes have been determined by X-ray crystallography.