Hydrogen-bonded cobalt(II)-organic framework: normal and reverse spin-crossover behaviours

A novel hydrogen-bonded metal-organic framework (H-MOF) [Co(HL)(2)](DMF)(1.2)(H2O)(2.4)(1.solv), in which L = 2,2':6',2 ''-terpyridine-5,5 ''-diyl biscarboxylate, was prepared. An intermolecular single H-bond between carboxy and carboxylate sites was present in this compound. The crystal structure of 1.soly showed a 4-fold interpenetrating H-bonded diamond framework. After the desorption of the crystal solvents, 1.desoly exhibited normal and reverse spin-crossover (SCO) behaviours, providing an asymmetric thermal hysteresis loop.

Automated summary

A novel hydrogen-bonded metal-organic framework was prepared and showed asymmetric thermal hysteresis behavior with a 4-fold interpenetrating diamond framework.