in gas
static metal vapour atom reactor (according to V. Graves and J. Lagowski, Inorg. Chem., 15 (1976) 577); not isolated, detd. by MAS spectroscopy;
参考文献
Ssekaalo, H.; Lagowski, J. J.; Seymour, C. M.
Inorganica Chimica Acta, 1991 , vol. 183, p. 91 - 96