A new Felt complex with a linear hexadentate ligand involving one terminal imidazole and one terminal imidazolato moiety, [FeHL2-Me]ClO4, has been synthesized, where H2L2-Me denotes [bis(2-methyl-4-formylimidazolidene)aminopropyl]ethylenediamine. This complex shows an abrupt spin-crossover at T-1/2 = 165.5 K and assumes a homochiral 1D chain structure through hydrogen bonds between the imidazole and imidazolato groups of adjacent molecules.