Journal of the American Chemical Society, , vol. 61, p. 1076 Zhurnal Obshchei Khimii, , vol. 16, p. 825,827 Chem.Abstr., , p. 1621 Zhurnal Obshchei Khimii, , vol. 9, p. 233 Chem. Zentralbl., , vol. 110, # II p. 1044 Doklady Akademii Nauk SSSR, , vol. 60, p. 807,808 Chem.Abstr., , p. 157