Abstract
The title complex, [Os3(C2H4N)H(CO)10] or [Os3(CO)10(μ-H)(μ-HN=C—CH3-1κN:2κC)], was synthesized in 41.6% yield by reactions between Os3(CO)11(CH3CN) and 2,4,6-trimethylhexahydro-1,3,5-triazine. The central osmium triangle has two OsI atoms bridged by a hydride ligand and a μ-HN= C—CH3-1κN:2κC triazine fragment. Three CO ligands complete the coordination sphere around each OsI atom, while the remaining Os0 atom has four CO ligands. Each Os atom exhibits a pseudo-octahedral coordination environment, discounting the bridging Os—Os bond.
Highlights
The title complex, [Os3(C2H4N)H(CO)10] or [Os3(CO)10(-H)(-HN C— CH3-1N:2C)], was synthesized in 41.6% yield by reactions between Os3(CO)11(CH3CN) and 2,4,6-trimethylhexahydro-1,3,5-triazine
The central osmium triangle has two OsI atoms bridged by a hydride ligand and a -HN C—CH3-1N:2C triazine fragment
While Fe and Ru starting materials reacted with the triazine directly, Os3(CO)12 was first converted to Os3(CO)11(CH3CN) to accomplish the same result
Summary
Liu and co-workers subsequently reported the products of reactions of Os3(CO) with 1,3,5-trimethylhexahydro-1,3,5-triazine, which yielded three products, i.e. a trimer containing a -N(CH3)—CH2—N(CH3) triazine fragment and a hydride bridge, a trimer containing a 3-N(CH3)—CH2—N(CH3) triazine fragment and a hydride bridge, and a dimer with two bridging N(CH3)—CH—N(CH3) fragments perpendicular to one another forming a sawhorse-type complex (Liu et al, 2005). In these complexes, each bridge has a N—C—N backbone. [Os3(C2H4N)H(CO)10] 893.77 Orthorhombic, P212121 100 9.56470 (6), 11.59555 (8), 15.61610 (11) 1731.95 (2) 4 Cu K 41.18 0.15 Â 0.07 Â 0.02
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