Synthesis, characterization, and chiral assembly structure of a self-complementary iron(III) complex, [FeIII(H2L 5-Me)(HL5-Me)](ClO4)2·EtOH (H2L5-Me: N-[(5-Methylimidazol-4-yl)methylidene]histamine)

Hiroaki Hagiwara, Koshiro Nishi, Naohide Matsumoto, Yukinari Sunatsuki, Masaaki Kojima, Seiichiro Iijima

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A low-spin FeIII complex, [FeIII(H2L 5-Me)(HL5-Me)](ClO4)2·EtOH, was prepared by the reaction of FeII(ClO4) 2·6H2O and H2L5-Me in ethanol with 1:2 molar ratio and in air, where H2L5-Me: N-[(5-methylimidazol-4-yl)methylidene]histamine. Each complex molecule of [Fe(H2L5-Me)(HL5-Me)]2+ has both fully protonated ligand and mono-deprotonated ligand and acts as a chiral self-complementary building block to produce the homochiral imidazoleimidazolate-bridged zigzagchain structure. The X-ray analysis confirmed that the adjacent chains with the same chirality are stacked in a crystal lattice to give a chiral crystal (conglomerate). Low-spin FeIII was revealed by the magnetic susceptibility and Mössbauer measurements.

Original languageEnglish
Pages (from-to)306-311
Number of pages6
JournalBulletin of the Chemical Society of Japan
Issue number3
Publication statusPublished - 2011


ASJC Scopus subject areas

  • Chemistry(all)

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