deca-rbonylation of ,-di-methyl-formamide to form di-methyl-ammonium cations in the hybrid framework compound {[(CH)NH][Zn{OPCH(OH)PO}]} .

The title phospho-nate-based organic-inorganic hybrid framework, poly[bis(dimethylammonium) [(μ-2,5-dihydroxybenzene-1,4-diphosphonato)zinc(II)]], {(CHN)[Zn(CHOP)]} , was formed unexpectedly when di-methyl-ammonium cations were formed from the deca-rbonylation of the ,-di-methyl-formamide solvent. The framework is built up from ZnO tetra-hedra and bridging di-phospho-nate tetra-anions to generate a three-dimensional network comprising [100] channels occupied by the (CH)NH cations. Within the channels, an array of N-H⋯O hydrogen bonds help to establish the structure. In addition, intra-molecular O-H⋯O hydrogen bonds between the appended -OH groups of the phenyl ring and adjacent PO groups are observed.