Reactions of dodecacarbonyltriruthenium with oxadienes

Reaction of 2-methyl-3-morpholino-1-phenylprop-2-en-1-one with Ru3(CO)12

“…Earlier, we have synthesized struc turally similar complexes by the reactions of Ru 3 (CO) 12 with 4 phenylbut 3 en 2 one 6 and 1 p tolyl 3 phenyl prop 2 en 1 one. 1 In spite of the presence of different substituents in the starting ligands, all the compounds synthesized contain dihydropyran rings with similar struc tures. 1, 6 The formation of complex 3, like the synthesis of com plex 2, is accompanied by elimination of the morpholine fragment from the starting ligand.…”

“…Earlier, 1 we have demonstrated that most of the com plexes prepared by the reactions of Ru 3 (CO) 12 with oxadienes (α,β unsaturated ketones) contain the same structural fragments, viz., five membered oxaruthena cycles and dihydropyran rings, involved in π coordina tion to metal atoms. The variation of substituents at the carbonyl group of oxadiene (aryls, alkyls, or amino groups) did not lead to new structural types.…”

“…Other examples of the reactions of these ketones with iron group metal carbonyls are lack ing in the literature. 4, 5 In the present study, we examined the reaction of Ru 3 (CO) 12 with 2 methyl 3 morpholino 1 phenylprop 2 en 1 one (1).…”

Triruthenium complexes obtained in the thermal reaction of Ru3(CO)12 with dibenzylideneacetone

“…The signals are close to those of the complex Ru 2 (CO) 6 Table 1), whose structure was established by X ray diffraction. Thus, complex 5 is a binuclear complex where the ruthenium atoms are linked through the М-М bond, μ hydride bridge, and the oxadiene fragment of the ligand, which forms with one ruthenium atom the chelate five mem bered oxaruthenacycle η 3 coordinated to the second ru thenium atom.…”

New pentanuclear complex Ru5(CO)11(µ4-O)(µ 3-H)(p-MeC6H4C(O)C(H)=CPh)3·transformations of the triruthenium cluster Ru3(CO)12 in thermal reactions with α,β-unsaturated carbonyl compounds

“…In complex 4, the tetracoordinated oxygen atom is located in the center of a tetrahedron formed by the ruthenium atoms with equalized Ru-O distances of 2.097 Å. 4 In complex 1, the Ru-O distances are non equivalent (see Table 1). …”