Crystal engineering of metal complexes based on charge-augmented double hydrogen-bond interactions between thiosemicarbazides and carboxylates
Abstract
Charge augmented double hydrogen bonds have been used for the first time to form extended linear polymers between bis(thiosemicarbazide)nickel(2+) and dicarboxylate anions; the X-ray crystal structures of [Ni(tsc)2]2+[tere]2– 1 and [Ni(tsc)2(OH2)2]2[fum]2– 2 [tsc = thiosemicarbazide, H2NC(S)NHNH2; tere = terephthalate, C6H4(CO2–)2-1,4; fum = fumarate, trans–O2CCHCHCO2–] are discussed.