113249-32-4Relevant academic research and scientific papers
Interconversion of dinuclear and oxo-centered trinuclear cobaltic acetates
Sumner Jr., Charles E.
, p. 1320 - 1327 (2008/10/08)
Reaction of the oxo-centered cobalt cluster [(py)3Co3O(OAc)5OH]+, [5]+, with water in acetic acid produces a dinuclear cluster, [(py)4Co2(OAc)3(OH)2]+, [3]+, and a new oxo-centered cluster, [(py)5Co3O(OAc)3(OH)2]2+, [4]2+, as an equilibrium mixture. The clusters [3]+ and [4]2+ were also synthesized by the oxidation of cobaltous acetate with peracetic acid in the presence of pyridine in aqueous acetic acid. Treatment of [3]+ and [4]2+ with glacial acetic acid gives a mixture of [5]+ and [(py)3Co3O(OAc)6]+, [6]+. [3][PF6] and [4][PF6]2 were characterized by X-ray crystallographic techniques. At 20 ± 1°C, crystals of both compounds are monoclinic, with a = 12.478 (2) A?, b = 14.223 (3) A?, c = 23.278 (4) A?, β = 103.92 (1)°, V = 4010 (1) A?3, Z = 4 [μa(Mo Kα) = 1.21 mm-1], and space group P21/c-C2n for [3][PF6], and with a = 16.500 (3) A?, b = 17.128 (4) A?, c = 17.357 (4) A?, β = 105.64 (2)°, V = 4724 (2) A?3, Z = 4 [μa(Mo Kα) = 1.32 mm-1], and space group P21/n for [4][PF6]2.
