Synthesis, Crystal Structure, and Characterization of the first Organic Cation Hexaoxoperiodate

The title compound is an organic-inorganic hybrid material. The single crystal X-ray diffraction investigation reveals that the studied compound crystallizes in the monoclinic system, space group P2 1 /c with the following lattice parameters: 𝑎 = 7.551 (2) A, 𝑏 = 6.694 (3) A, 𝑐 = 14.783 (2) A, β = 97.61 (2)° and 𝑍 = 2. The crystal lattice is composed of a discrete (H 4 IO 6 )− anion surrounded by piperazinium cations and water molecules. Complex hydrogen bonding interactions between the different chemical spices form a three-dimensional network. Room temperature IR, 13 C NMR spectroscopy, thermogravimetric analysis and optical absorption of the title compound were recorded and analyzed.