[1] Brock Univ, Dept Chem, 1812 Sir Isaac Brock Way, St Catharines, ON L2S 3A1, Canada
[2] Univ Ottawa, Fac Sci, Xray Core Facil, 150 Louis Pasteur, Ottawa, ON K1N 6N5, Canada
[3] NS Kurnakov Gen & Inorgan Chem Inst, 31 Leninskii Prospekt, Moscow 119991, Russia
[4] Univ Durham, Dept Chem, South Rd, Durham DH1 3LE, England