1. S. V. Volkov, E. A. Mazurenko, and L. I. Zheleznova, Problems of Chemistry and the Application of Metal ?-Diketonates [in Russian], Nauka, Moscow (1982), p. 133.
2. S. V. Volkov, L. I. Zheleznova, and E. A. Mazurenko, Koord. Khim.,9, No. 10, 1338 (1983).
3. T. Ogura and Q. Fernando Inorg. Chem.,12, No. 11, 2611 (1973).
4. K. Lijima, T. Itoh, and S. Shibata, J. Chem. Soc. Dalton Trans.,12, 2555 (1985).
5. M. Hargittai and I. Hargittai, Geometry of the Molecules of Coordination Compounds in the Vapor Phase [Russian translation], Mir, Moscow (1976).