Helical structures in a lithium hexacyanocobaltate-based three-dimensional metal–cyanide framework

•lithium hexacyanocobaltate-based inorganic-organic hybrid compound•three-dimensional metal-cyanide framework•anionic chiral 3D structure composed of helical chains•rich hydrogen bonds among guest molecules and anionic framework

Inorganic–organic hybrid compound (C3H5N2)2(H2O){[Li(H2O)][Co(CN)6]} was synthesized by the reaction of Li3[Co(CN)6] with imidazolium chloride in aqueous solution. It crystallizes in the chiral orthorhombic space group P212121 at 293 K. The anionic chiral 3D structure is composed of helical chains based on the inorganic {[Li(H2O)][Co(CN)6]} building blocks. Imidazolium cations and crystallization water molecules reside in the voids of the anionic framework through rich hydrogen bonds.

Graphical abstractAnionic chiral 3D structure of (C3H5N2)2(H2O){[Li(H2O)][Co(CN)6]} is composed of helical chains based on the inorganic {[Li(H2O)][Co(CN)6]} building blocks. Imidazolium cations and crystallization water molecules reside in the voids of the anionic framework through rich hydrogen bonds.Figure optionsDownload full-size imageDownload as PowerPoint slide