Systematic expansion of supercubane cores in manganese oxo clusters with tricarboxylate ligands

Yayoi Okui, Florina Aurelia Catusanu, Ryoko Kubota, Bunsho Kure, Takayuki Nakajima, Tomoaki Tanase, Takashi Kajiwara, Masahiro Mikuriya, Hitoshi Miyasaka, Masahiro Yamashita

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

A novel class of high-nuclearity Mn17 and Mn19 mixed-valent complexes, [Mn17(μ-O)12(μ-OMe) 2(μ-kta)6(MeOH)4] (1), [Mn 17(μ-O)14(μ-kta)6L4] [L = bpy (2a), phen (2b), 4,7-Ph2phen (2c), dmf (3)], and [Mn 19(μ-O)14(μ-kta)6(bpy)6]X 3 [X = PF6 (4a), BF4 (4b)], were synthesized by utilizing Kemp's tricarboxylate ligands (H3kta = cis,cis-1,3,5-trimethylcyclohexane-1,3,5-tricarboxylic acid). The complexes were characterized by X-ray crystallography and reveal mineralomimetic Mn 13 supercubane units, [Mn13(μ-O)14], in which their oxidation states systematically altered, depending on their vertex face-capping ligands and MnII satellite fragments. Complex 2a was converted by treatment with benzoic acid and [Mn2O 2(bpy)4](BF4)3 to a cage-type Mn14 complex, [Mn14(μ-O)12(μ-OH) 6(μ-Hkta)6(bpy)6](BF4) 4 (5), which show ferro-and antiferromagnetic interactions and slow magnetic relaxation at low temperature.

Original languageEnglish
Pages (from-to)4325-4330
Number of pages6
JournalEuropean Journal of Inorganic Chemistry
Issue number28
DOIs
Publication statusPublished - 2011 Oct

Keywords

  • Carboxylate ligands
  • Cluster compounds
  • Magnetic properties
  • Manganese
  • Mixed-valent compounds
  • Supercubane cores

ASJC Scopus subject areas

  • Inorganic Chemistry

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