Butane‐1,4‐diamine zinc(II) hydrogen phosphite

The title compound, poly[zinc(II)‐μ‐butane‐1,4‐diamine‐μ‐(hydrogen phosphito)] (C 4 H 12 N 2 ) 0.5 [ZnHPO 3 ], is a hybrid organic–inorganic solid built up from 1,4‐diaminobutane molecules, Zn 2+ cations (coordinated by three O atoms and one N atom) and HPO 3 2− hydrogen phosphite groups. The organic species bonds to the Zn atom as an unprotonated ligand, resulting in it acting as a bridge between infinite ZnHPO 3 layers, which propagate in (100). The complete butane‐1,4‐diamine species is generated from a H 2 N(CH 2 ) 2 – half molecule by inversion symmetry. The zincophosphite sheets contain polyhedral four‐ and eight‐membered rings in a 4.8 2 topology.