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2 Materials Science

2 2003

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Thiolato-bridged copper complexes with N,N,S-tridentate ligands

Kotera T., Fujita A., Mikuriya M., Handa M.

Materials Science

2003

Vol. 21, No. 2

171-179

Thiolato-bridged complexes [CuII2(apaet)Cl3] and [CuI3CuII3(apampt)3Cl6] (Hapaet = 2-[(3-aminopropyl)amino]ethanethiol, Hapampt = 1-[(3-aminopropyl)amino]-2-methylpropane-2-thiol), have been synthesized and characterized by infrared and electronic absorption spectra and temperature dependence of magnetic susceptibilities. X-ray crystallography of the latter complex reveals a localized mixed-valence structure which is supported by the spectroscopic and electrochemical data. Magnetic susceptibility data show that a strong antiferromagnetic interaction is operating between CuII ions in both the complexes.

Structural effects on magnetism of pyridyl nitroxide complexes of ruthenium(II, III) pivalate dimers

Handa M., Sayama Y., Mikuriya M., Hiromitsu I., Kasuga K.

Materials Science

2003

Vol. 21, No. 2

199-206

The 1:1 reactions in molar ratio of ruthenium(II,III) pivalate dimer and pyridyl nitronyl nitroxide gave chain complexes, [Ru2(O2CCMe3)4(L)]n(BF4)n, L = 2-(4-pyridyl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazolyl-1-oxyl-3-N-oxide and 2-(3-pyridyl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazolyl-1-oxyl-3-N-oxide. For the complex with the former radical, the chain structure made up by an alternated dimer-radical arrangement due to the axial coordination of pyridyl nitrogen and one of two nitroxide oxygens of the radical was confirmed by the X-ray diffraction method. Their magnetic behaviors were analyzed by considering magnetic interactions between Ru(II,III) dimer and radical through pyridyl and N-O groups, respectively.