Networking chiral coordination polymers through amide hydrogen bond interactions: Thermal stability and optical SHG investigations

Complementary amide H-bond interactions of chiral C2-symmetric bis(amide) ligand BINDC, (N,N′-bis(isonicotinoyl)-(1R,2R)-diaminocyclohexane) in Zn(BINDC)Cl2 (1), Zn(BINDC)Br2 (2) and Ag(BINDC)NO3 (3) metal-organic frameworks (MOFs) lead to the formation of hierarchical network structures. The strong H-bond interactions coupled with coordinate bond leads to enhanced thermal stability to the materials. Moreover, the MOFs show solid state second harmonic generation (SHG) and good optical transparency in the visible range.