The isomorphic title series is investigated using single crystal X-ray diffraction and double matrix infrared spectroscopic techniques. The metal ion distribution at the two different metal sites (hexaformate-coordinated Me1 sites and mixed-coordinated Me2 sites) is found to exhibit a slight preference of Mn2+ ions to Me1 sites and Mg2+ ions to Me2 ones. The spectral regions at 2400–2500cm− 1 and 1300–1400cm− 1, corresponding to νOD of ...
