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Electronic effects of the substituent group in 8-quinolinolato ligand on geometrical isomerism for nitrosylruthenium(II) complexes
The reaction of hydrous nitrosylruthenium trichloride with 2-chloro-8-quinolinol (H2cqn) or 2-methyl-8-quinolinol (H2mqn) in ethyl alcohol, 50 vol.% ethyl alcohol–water, water or acetic acid solution adjusted to pH 5.5 and the reaction of two kinds of geometrical isomers, cis-1 and cis-2[RuX(qn) 2NO...
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Published in: | Inorganica Chimica Acta 2000-02, Vol.299 (1), p.80-90 |
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Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | The reaction of hydrous nitrosylruthenium trichloride with 2-chloro-8-quinolinol (H2cqn) or 2-methyl-8-quinolinol (H2mqn) in ethyl alcohol, 50 vol.% ethyl alcohol–water, water or acetic acid solution adjusted to pH 5.5 and the reaction of two kinds of geometrical isomers,
cis-1 and
cis-2[RuX(qn)
2NO] (X=acetate or Cl; Hqn=H2cqn or H2mqn), with chloride or acetate ion in ethyl alcohol were examined in order to compare the effect of the chloro and methyl groups of the 2-position in 8-quinolinolato ligands on geometrical isomerism for nitrosylruthenium(II) complexes. The thermal and photoinduced reactions for the 2cqn complexes were also compared with those for the 2mqn complexes. The differences in the substituent in the 8-quinolinolato ligand and of the solvents used for the reactions were related to geometrical isomerism of the products. In general, the 2cqn complexes especially favor the
cis-2 geometry, while the 2mqn complexes favor the
cis-1 and
trans geometries. The structures of
cis-1[RuCl(2cqn)
2NO],
cis-2[RuCl(2cqn)
2NO] and
trans-[Ru(OEt)(2mqn)
2NO] (OEt=ethanolate ion) were determined by X-ray diffraction. |
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ISSN: | 0020-1693 1873-3255 |
DOI: | 10.1016/S0020-1693(99)00464-8 |