title: Inter-calated brucite-type layered cobalt(II) hydroxy-sulfate.
abstract: In an attempt to synthesize new cobalt(II) sulfate framework structures using 1,4-diaza-bicyclo-[2.2.2]octane as a template, crystals of poly[0.35-[hexa-aqua-cobalt(II)] [tri-μ-hydroxido-μ-sulfato-dicobalt(II)]], {[Co(H(2)O)(6)](0.35)[Co(2)(OH)(3)(SO(4))]}(n), were obtained as a mixture with [Co(H(2)O)(6)]SO(4) crystals. The crystal structure can be described as being constructed from discrete brucite-type [Co(4)(OH)(6)(SO(4))(2)] layers, each of which is built up from edge-shared [Co(OH)(6)] and [Co(OH)(4)(OSO(3))(2)] octa-hedra, with partial inter-calation by [Co(H(2)O)(6)](2+) ions. The absence of ca 30% of the [Co(H(2)O)(6)](2+) cations indicates partial oxidation of cobalt(II) to cobalt(III) within the layer.
authors.forename: Bunlawee
authors.initials: B
authors.lastname: Yotnoi
authors.forename: Sanchai
authors.initials: S
authors.lastname: Luachan
authors.forename: Timothy J
authors.initials: TJ
authors.lastname: Prior
authors.forename: Apinpus
authors.initials: A
authors.lastname: Rujiwatra