References
- Nakagawa , I. and Shimauouchi , T. 1967 . Spectrochim. Acta , 23A : 2099
- van Driel , M. and VerWeel , H. J. 1936 . Z. Krist. , A95 : 308
- Caulton , K. G. and Fenske , R. F. 1967 . Inorg. Chem. , 6 : 562
- Ayscough , P. B. and Collins , R. G. 1966 . J. Phys. Chem. , 70 : 3128
- Davies , M. B. and Lethbridge , J. W. 1972 . J. Inorg. Nucl., Chem. , 34 : 2171 Fujiwara, S., Watanabe, T., Tadano, H., J. Coord. Chem., 1, 195 (1971)