Amy L. Gillon, A. Guy Orpen, Jonathan Starbuck, Xi-Meng Wang, Yolanda Rodríguez-Martín and Catalina Ruiz-Pérez
The cis-MCl2‥HN+ chelated hydrogen bond synthon has been exploited in preparation of crystalline [4,4′- H2bipy][MCl4] (M = Mn 2 and Cd 3), which shows a one-dimensional substructure of the form [{MCl4}n]2n– consisting of a kinked chain of doubly edge sharing MCl6 octahedra. These chains are cross-linked by hydrogen bonding to the [4,4′-H2bipy]2+ ions.