Synthesis, structures, and magnetic properties of end-to-end azide-bridged manganese(III) chains: Elucidation of direct magnetostructural correlation

Jeong Hwa Song, Kwang Soo Lim, Dae Won Ryu, Sung Won Yoon, Byoung Jin Suh, Chang Seop Hong

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25 Citations (Scopus)

Abstract

The two one-dimensional chain compounds [Mn(L1)(N3)] ·H2O (1·H2O; H2L1 = 2,2′-((1E,1′E)-ethane-1,2-diylbis(azan-1-yl-1-ylidene)) bis(phenylmethan-1-yl-1-ylidene)diphenol) and [Mn(L2)(N3)] (2; H 2L2 = 2,2′-((1E,1′E)-2,2-dimethylpropane-1,3-diyl) bis(azan-1-yl-1-ylidene)-bis(phenylmethan-1-yl-1-ylidene)diphenol) bridged by single end-to-end azides were prepared via a self-assembly process. Each Mn(III) ion exhibits a characteristic Jahn-Teller elongation along the chain direction. For both compounds, antiferromagnetic interactions between Mn(III) spins within a chain are transmitted through the azide ligands, together with the apparent occurrence of spin canting at low temperatures. Remarkably, the coupling constants (J) for 1 and 2 exceed those reported for end-to-end azide-linked Mn(III) systems. A systematic magnetostructural relationship based on the torsion angle is established in terms of the torsion angle Mn-N ax···Nax-Mn (ax = axial) for the first time.

Original languageEnglish
Pages (from-to)7936-7940
Number of pages5
JournalInorganic Chemistry
Volume53
Issue number15
DOIs
Publication statusPublished - 2014 Aug 4

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ASJC Scopus subject areas

  • Inorganic Chemistry
  • Physical and Theoretical Chemistry

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