Crystal structure and optical property of a supramolecular bromotellurate salt templated with 4 (Ethylammoniummethyl)pyridinium

Abstract A novel tellurium hybrid compound with 4-(Ethylaminomethyl) pyridine was prepared. The crystal was grown by slow evaporation method from aqueous solutions at room temperature giving birth to a new compound with formula (C8N2H14)2[Te1,5(Br)9](Br)]. The structure was determined by single-crystal X-ray diffraction. It crystallizes in the monoclinic system, space group C 2/c, with the following parameters: a = 46.518(3)A, b = 9.9474(5)A, c = 14.1879(7)A, β = 91.436(2)° and Z = 8. The stability of the structure was ensured by hydrogen bonding contacts (N-H…Br) lengths that are in the range of 3.490-3.682A. The infrared spectra (FTIR) were recorded in the 4000-550 cm−1, confirming the existence of vibrational modes that correspond to the organic and inorganic groups. The crystal packing was stabilized mainly by Br…H interactions. Hirshfeld surface calculations were conducted to more investigate intermolecular interactions, associated 2D fingerprint plots and enrichment ratio, revealing the quantitatively relative contribution of these interactions in the crystal packing.