A new copper chloride chain by supported hydrogen bonding

In the current paper we introduce a new type of Cu–Cl polymer ([H2bipip]2+[CuCl3]2−)n. In this polymer the trigonal CuCl3 units are covalently linked via chloride bridges. The structure is supported by the bipiperidinium cation ([H2bipip]2+) via hydrogen bonds. The cation plays an essential role in formation of the polymeric structure. The closely related piperazinium (H2pip)2+ cation also leads to a hydrogen bonded assembly of CuCl3 ([H2pip]2+[CuCl3]2−), but a covalently bound polymer was not obtained.