Manganese(II) malonate dihydrate: a reinvestigation

X-ray diffraction, spectroscopic, thermal and surface morphological studies of gamma-irradiated diaquamalonatomanganese(II) (DMM)

“…The unirradiated sample had the same structure, the only difference being in the cell parameters (Table 1). Single crystal studies of DMM have already been reported [18]. In the present study also the system was found to be orthorhombic.…”

Novel Nanobiocomposites Based on Natural Polysaccharides as Universal Trophic Low-Dose Micronutrients

“…It should be noted that the main broadenings of OH stretching vibrations in the spectra of the NCs were due to the presence of a strong hydrogen network between the OH groups of the polysaccharide matrix and H 2 O molecules in the metal–polysaccharide crystal structures, which are responsible for the stabilization of solid structure and for retaining aggregated units. Such a system of hydrogen bonding was found in the crystal structure of Mn(D-gluconate) 2 ×2H 2 O salt [ 40 ]. In addition, the maximum of the absorption band from δ (OH) vibrations (at 1430 cm −1 ), characteristic of one of the possible positions of the CH 2 OH group, shifted towards lower frequencies, which also evidences ionization due to complexation [ 39 ].…”

Syntheses, Crystal Structures and Magnetic Properties of Carboxylato‐Bridged Polymeric Networks of MnII

“…The malonate anion, in its frequently found coordination mode [6,16,17] acts as a chelating and a bis(monodentate) ligand towards three metal ions. A selection of bond lengths and angles is reported in Table 2, and the metal coordination sphere with atom labeling Scheme is shown in Figure 5 (12) C ( The present structure is close comparable to those detected in analogous derivatives [Mn 2 (mal) 2 (4,4-bipy)-(H 2 O) 2 ] n , [6a] and [Mn 2 (mal) 2 (hmt)(H 2 O) 2 ] n , [6b] where [Mn(mal)(H 2 O)] n layers are connected by 4,4Ј-bipy and hmt spacers, respectively.…”