The Hydrogen-Bonding System in Deuterated Copper Fluorosilicate Tetrahydrate: a Neutron Diffraction Study

A structure of copper hexafluorosilicate-deuterium oxide (1/4), CuSiF₆.4D₂O, has been established by single-crystal neutron diffraction in order to describe the hydrogen-bonding system. It crystallizes in the monoclinic system, space group P2₁/c. The structure comprises SiF₆ and Cu(D₂O)₄F₂ octahedra. A common F atom allows the formation of chains along the [101] direction; these chains are linked by hydrogen bonds.

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