Inorganic Chemistry, Vol.54, No.2, 412-414, 2015
A New Decaoxidooctaborate(2-) Anion, [B8O10(OH)(6)}(2-): Synthesis and Characterization of [Co(en)3][B5O6(OH)(4)][B8O10(OH)(6))]center dot 5H(2)O (en=1,2-Diaminoethane)
The synthesis and X-ray diffraction structure of [Co(en)(3)][B5O6(OH)(4)][B8O10(OH)(6)].5H(2)O (1) are reported. Compound 1 arises through a selective-templating process from a Dynamic Combinatorial Library of polyborate anions. Compound 1 contains two different polyborate species, with [B8O10(OH)(6)](2-) being particularly novel. It is comprised of fused tetraborate and pentaborate anions with a 4-coordinate B atom and a 3-coordinate O atom in common.