Acta Cryst. (2006). E62, o4877-o4879  [ doi:10.1107/S1600536806040384 ]

2-Methylimidazolium tetrahydroxohexaoxopentaborate

H.-X. Yang, W.-J. Zhang, X.-L. Liu and Z.-H. Liu

Abstract: A new organic pentaborate, C₄H₇N₂⁺·B₅O₆(OH)₄^-, has been synthesized under hydrothermal conditions. Its crystal structure is composed of isolated pentaborate anions and 2-methylimidazolium counter-cations. The B₅O₆(OH)₄^- units are connected to one another through hydrogen bonds, forming a three-dimensional framework with large channels along the c axis, in which the cations are located.

Online 7 October 2006

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