Three-dimensional networks based on trinuclear motifs with tricomponent azide-carboxylate-tetrazolate cobridges: Synthesis, structure and magnetic properties

  • Xiu Bing Li
  • , Kun Wang
  • , Yu Ma
  • , En Qing Gao*
  • , Cai Ming Liu
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Two 3D coordination polymers of Mn II with azide and bifunctional zwitterionic ligands bearing both carboxylate and tetrazolate groups, 1-(carboxylatomethyl)-3-(5-tetrazolato)pyridinium (L 1) and 1-(carboxylatoethyl)-4-(5-tetrazolato)pyridinium (L 2), were synthesized, and structurally and magnetically characterized. They are formulated as [Mn 3(L 1) 2(N 3) 4(H 2O) 2] n·4nH 2O (1) and [Mn 3(L 2) 2(N 3) 4(H 2O) 3] n·3.5nH 2O (2). In both compounds, octahedral Mn II ions are linked by the mixed (μ 2-EO-N 3)(μ 2-syn,syn-COO) (μ 2-N 2,N 3-CN 4) (CN 4 = tetrazolate and EO = end-on) triple bridges to give anionic linear trinuclear motifs. The motifs are connected through EE-N 3 (EE = end-to-end) bridges to give layers and chains in 1 and 2, respectively, and the cationic pyridinium spacers serve to interlink the layers or chains into three-dimensional frameworks with the α-Po and CdSO 4-type topology, respectively. Magnetic studies demonstrated that the magnetic interactions within and between the trinuclear motifs, through the tricomponent and EE-N 3 bridges, respectively, are both antiferromagnetic in both compounds.

Original languageEnglish
Pages (from-to)4188-4194
Number of pages7
JournalDalton Transactions
Volume41
Issue number14
DOIs
StatePublished - 14 Apr 2012

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