Syntheses and molecular structures of heterometallic carbonyl clusters derived from the triruthenium carbonyl methoxynitrido cluster; Crystal and molecular structures of [Ru₂Mo(μ-H)(CO)₈(η⁵-C₅H₅)(μ₃-NOMe)], [Ru₂Mo(μ-H)(CO)₈(η⁵-C₅H₅)(μ₃-NH)].

Reaction of [Ru3(CO)9(μ3-CO)(μ3-NOMe)] 1 with stoichiometric amounts of the hydrido complex [(η5-C5H5)Mo(CO)3H] in THF at room temperature (r.t.) for 3 days affords the isolation of two new heterometallic trinuclear clusters namely [Ru2Mo(μ-H)(CO)8(η5-C5H5)(μ3-NOMe)] 2 and [Ru2Mo(μ-H)(CO)8(η5-C5H5)(μ3-NH)] 3 which both consist of a triangular Ru2Mo core capped by a NR fragment (2: R=OMe; 3: R=H). However, the reaction of 1 with the organomercurial derivative [{(η5-C5H5)Mo(CO)3}2Hg] resulted in the formation of a pentanuclear complex [Ru3(CO)10(μ-NH2)(μ3-Hg){Mo(η5-C5H5)(CO)3}] 4 in which a (η5-C5H5)Mo(CO)3Hg fragment bridges the Ru3core on the opposite side of the amido group.