Synthesis and temperature-dependent studies of a perovskite-like manganese formate framework templated with protonated acetamidine

Dalton Trans. 2017 Jul 4;46(26):8476-8485. doi: 10.1039/c7dt01251a.

Abstract

We report the synthesis, crystal structure, thermal, dielectric, phonon and magnetic properties of the [CH3C(NH2)2][Mn(HCOO)3] (AceMn) compound. Our results show that this compound crystallizes in the perovskite-like orthorhombic structure, space group Imma. It undergoes a structural phase transition at 304 K into a monoclinic structure, space group P21/n. X-ray diffraction, dielectric, IR and Raman studies show that the ordering of the acetamidinium cations triggers the phase transition. Low-temperature magnetic studies show that this compound exhibits weak ferromagnetic properties below 9.0 K.

MeSH terms

  • Amidines / chemistry*
  • Calcium Compounds / chemistry*
  • Chemistry Techniques, Synthetic
  • Electric Impedance
  • Magnetic Phenomena
  • Manganese / chemistry*
  • Models, Molecular
  • Molecular Conformation
  • Organometallic Compounds / chemical synthesis*
  • Organometallic Compounds / chemistry*
  • Oxides / chemistry*
  • Protons*
  • Temperature*
  • Titanium / chemistry*

Substances

  • Amidines
  • Calcium Compounds
  • Organometallic Compounds
  • Oxides
  • Protons
  • perovskite
  • Manganese
  • Titanium
  • acetamidine