| Budget Amount *help |
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2003: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 2002: ¥2,300,000 (Direct Cost: ¥2,300,000)
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| Research Abstract |
1.The cis-trans isomerizations have occurred during the reactions of the nitrosylmthenium complex, cis-[Ru(NO)Cl(pyca)_2] (pyca' = 2-pyridinecarboxylate), with OH^-and N_3^-in water to give the dimeric nitrosyiruthenium complex, [{Ru(NO)(pyca)_2}_2(m-H_3O_2)]PF_6 and with CH_3O^-in methanol to give the trans-form nitrosyiruthenium complex, trans-[Ru(NO)(OCH_3)(pyca)_2].
2.The geometrical change reaction of [Ru(NO)X(pyca)_2] (pyca = 2-pyridinecarboxylato) between the cis-and trans-form complexes occurred in water and alcohol. The favorable geometry depended on the nature of the coexisting ligand X such as Cl^-, RO^-(R = CH_3, C_2H_5), and H_2O (or OH^-), which was confirmed by synthetic, structural and theoretical studies.
3.cis-[Ru(N_3)_2(bpy)_2] (bpy = 2,2'-bipyridine) reacts with hydrochloric acid to afford ammine complexes and with nitric acid to nitrosyl complexes. A rare reaction occurs by decomposition of the azido complex as a nitrogen source of the nitrosyl ligand. Reactions with CH_3I in CH_3CN-H_2O yield a methyleneimine complex, cis-[Ru(NH=CH_2)(NCCH_3)(bpy)_2]^<2+>. These nitrogen-containing ligands retain the nitrogen atom of the azido ligand.
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