Synthesis, crystal structures, and thermal properties of trichloro[O-bis(2-hydroxyethyl)ammonium] manganese(ii), {Mn[(HOCH2CH2)2NH2]Cl3}n, and N-(2-hydroxyethyl)-N-methylaminoniuin aquatrichloromanganate(ii), [MeNH2CH2CH2OH][Mn(H2O)Cl3]

Two new compounds, trichloro[O-bis(2-hydroxyethyl)ammonium] manganese(ii), {Mn[(HOCH2CH2)2NH2]Cl3}n (1), and N-(2-hydroxyethyl)-N-methylammonium aquatrichloromanganate(II), [CH3NH2CH2CH2OH][Mn(H2O)Cl3] (2), were synthesized. The crystal structures of the new compounds were determined by single-crystal X-ray diffraction. Both structures contain similar chains composed of (MnOCl5) octahedra. In the structure of 1, the manganese atom is coordinated by the OH group of the cation; in the structure of 2, the manganese atom is coordinated by a water molecule. There are different hydrogen bond systems in the structure of 1 due to disorder of OH groups of the cation. The melting points and enthalpies of the synthesized compounds evaluated by DSC are 162 °C and 17.3 kJ mol−1 for compound 1 and 30 °C and 16.9 kJ mol−1 for compound 2, respectively. Compound 1 is a chain coordination polymer, while compound 2 is an ionic liquid with a polynuclear anion.