Synthesis and Structure Evolution in Metal Carbazole Diphosphonates Followed by Electron Diffraction.

To access porous metal phosphonates, a new V-shaped, rigid, and sterically demanding diphosphonic acid, namely 3,6-diphosphono-9-carbazole (HL), was designed and employed in a high-throughput investigation. Screening of different metal salts and subsequent optimization studies resulted in the isolation of two porous metal phosphonates [Cu(HO)(L)]·2HO () and [Zn(HO)(HL)(L)]·8HO (). Structure determination was accomplished by electron diffraction and the dehydration behavior of was followed in situ.