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The unexpected reactions of [RuCl3(2mqn)NO] (H2mqn=2-methyl-8-quinolinol) with 2-chloro-8-quinolinol (H2cqn) and of [RuCl(2cqn)(2mqn)NO] on photoirradiation |
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| Authors: | Hongfei Wang Takashi Onozuka Mikio Tanaka |
| Institution: | a Department of Chemistry, College of Science, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan b Department of Radiological Science, School of Health Science, International University of Health and Welfare, Kitakanemaru, Otawara, Tochigi 324-8501, Japan c The Laboratory of Chemistry, Nippon Medical School, Kosugi, Nakahara-ku, Kawasaki 211-0063, Japan |
| Abstract: | The reaction of RuCl3(2mqn)NO]− (H2mqn=2-methyl-8-quinolinol) with 2-chloro-8-quinolinol (H2cqn) afforded cis-1 RuCl(2cqn)(2mqn)NO] (the oxygen of 2cqn is trans to the NO) (complex 1), cis-1 RuCl(2cqn)(2mqn)NO] (the oxygen of 2mqn is trans to the NO) (complex 2) and a 1:1 mixture of cis-2 RuCl(2cqn)(2mqn)NO] (the oxygen of 2mqn is trans to the NO) and cis-2 RuCl(2cqn)(2mqn)NO] (the oxygen of 2cqn is trans to the NO) (complex 3). The reaction was compared with that of RuCl3(2mqn)NO]− with 8-quinolinol (Hqn) or 5-chloro-8-quinolinol (H5cqn). Photoirradiation reaction of complex 1 at room temperature in deaerated CH2Cl2 in the presence of NO gave trans-RuCl(2cqn)(2mqn)NO] (the Cl is trans to the NO) and complex 2 with recovery of complex 1. The reaction was contrasted with that of cis-1 RuCl(qn)(2mqn)NO] or cis-1 RuCl(5cqn)(2mqn)NO]. The crystal structure of complex 1 was determined by X-ray diffraction. The reactions were examined under consideration of atomic charge of the phenolato oxygen in 8-quinolinol and its derivatives calculated at the restricted Hartree-Fock/6-311G** level. |
| Keywords: | Ruthenium complexes Nitrosyl complexes 2-Chloro-8-quinolinol 2-Methyl-8-quinolinol Crystal structure |
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