Tamai, Yasufumi; Hattori, Tetsutaro; Date, Masamitsu; Koike, Shinji; Kamikubo, Yoshinori; Akiyama, Masahiro; Seino, Kazuhiro; Takayama, Hideki; Oyama, Tomohito; Miyano, Sotaro Journal of the Chemical Society - Perkin Transactions 1, 1999 , # 12 p. 1685 - 1694