|
|||||
|
|
New dodecanuclear phenylphosphonate-bridged Co(II) complexes |
|
| Authors: | Nataliya P. BurkovskayaMarina E. Nikiforova Mikhail A. KiskinAnatoliy S. Lermontov Artem S. BogomyakovVladimir S. Mironov Zhanna V. DobrokhotovaVasyl I. Pekhnyo Aleksei A. SidorovVladimir M. Novotortsev Igor L. Eremenko |
| Affiliation: | a N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky prosp. 31, 119991 Moscow, Russian Federation b International Tomography Center, Siberian Branch of the Russian Academy of Sciences, Institutskaya Str. 3a, 630090 Novosibirsk, Russian Federation c A.V. Schubnikov Institute of Crystallography, Russian Academy of Sciences, Leninsky prosp. 59, 119333 Moscow, Russian Federation d V.I. Vernadsky Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, 32-34, Palladin Avenue, 03680 Kiev, Ukraine |
| Abstract: | New dodecanuclear phenylphosphonate-bridged Co(II) complexes [(μ2-THF)5(η-HPiv)Co12(μ3-OH)4(μ6-O3PPh)4(μ-Piv)12]·THF·2С6Н6 (1·THF·2С6Н6), [(μ2-THF)6Co12(μ3-OH)4(μ6-O3PPh)4(μ-Piv)12]·3THF (2·3THF) and [(μ2-Hmhp)6Co12(μ3-OH)4(μ6-O3PPh)4(μ-Piv)12]·6.5MeCN (3·6.5MeCN) have been synthesized by the reaction of the cobalt(II) pivalate polymer {Co(Piv)2}n (Piv is the pivalate anion), as a source of metal fragments containing cobalt(II) atoms, with potassium phenylphosphonate (K2PO3Ph) in the presence of neutral O-donor additional ligands like molecules of THF or 6-methyl-2-pyridone (Hmhp). The structures of the dodecanuclear complexes 1-3 were determined by using single-crystal X-ray diffraction data. The magnetic properties of the compounds showed that complexes 1 and 3 exhibit antiferromagnetic exchange interactions between the magnetic centers. The stability of compounds 1 and 3 were studied using thermogravimetric analysis. |
| Keywords: | Polynuclear cobalt(II) complex Phenylphosphonate ligands X-ray diffraction analysis Thermal decomposition Magnetic properties |
| 本文献已被 ScienceDirect 等数据库收录！ | |