Structural design of coordination polymers based on manganese and chromium ions bridged by oxalate ligands

Masashi Yoshitake, Kazuya Kubo, Toru Endo, Shin Ichiro Noro, Tomoyuki Akutagawa, Takayoshi Nakamura

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Coordination polymers based on oxalate-bridged {[MnIICrIII-(oxalate)3]-} complexes of (DAT-2H2+)(DCH[18]crown-6)2[MnII(CH3OH)CrIII(oxalate)3]-2(CH3OH)3 and (DABCO-H+)2(DABCO-2H2+)[MnII(CH3OH)(Cl-)CrIII(oxalate)3]2-2- (CH3OH), where DAT, DABCO, and DCH[18]crown-6 denote 2,5-diaminotoluene, 1,4-diazabicyclo[2.2.2]octane, and cis-syncis-dicyclohexano[18]crown-6, respectively, were synthesized. The crystal structure of the former complex was composed of [MnII(Δ)(CH3OH)CrIII(Δ)(oxalate)3]- units, whereas that of the latter crystal was composed of [MnII(Δ)(CH3OH)(Cl-)-CrIII(Δ)(oxalate)3]2- units. The large flexible supramolecular cation in the former provided the two-dimensional structure of [MnII(Δ)(CH3OH)CrIII(Δ)(oxalate)3]-, although the two-dimensional honeycomb structure of the {[MnII(Δ)CrIII(Δ)-(oxalate)3]-} and {[MnII(Δ)CrIII(Δ)(oxalate)3]-} networks are often observed for the oxalate complexes. The round-shaped DABCO molecule in the latter induced a one-dimensional chain structure of [MnII(Δ)(CH3OH)CrIII(Δ)(oxalate)3]-. The former crystal showed a magnetic field dependence of magnetization typical for a spin-canting system.

Original languageEnglish
Pages (from-to)354-360
Number of pages7
JournalBulletin of the Chemical Society of Japan
Volume89
Issue number3
DOIs
Publication statusPublished - 2016 Jan 1

ASJC Scopus subject areas

  • Chemistry(all)

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