Acta Cryst. (2003). E59, i40-i42  [ doi:10.1107/S1600536803003611 ]

HgB₄O₇, a member of the isotypic M^IIB₄O₇ family (M^II = Mg, Mn, Zn, Cd)

M. Weil

Abstract: Mercury(II) tetraborate, HgB₄O₇, belongs to the family of isotypic compounds with the formula M^IIB₄O₇ (M^II = Mg, Mn, Zn, Cd). The structure is composed of a framework of [B₄O₇]^2- units, with two B atoms in triangular and two B atoms in tetrahedral coordination, and an Hg²⁺ atom situated in the cavities of the framework with a [4  +  3]-coordination by O atoms.

Online 21 February 2003

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