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A novel tellurium (IV) hybrid compound with 2-methylimidazole was prepared. The crystal was grown by slow evaporation method from aqueous solutions at room temperature giving birth to a new compound with formula (C4H7N2)2TeBr6. 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 = 18.577(2)Å, b = 9.1497(10)Å, c = 13.5355(17)Å, α = 90°, β = 123.835(5)°, γ = 90° and Z = 8. The structure was solved with a final R = 0.044 for 2783 independent reflections. The crystal arrangement consists of [TeBr6]2− anions surrounded by [C4H7N2]2+ cations. The stability of the structure was ensured by hydrogen bonding contacts (N–H...Br) lengths that are in the range of 3.490–3.682 Å. 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 (73.6%) interactions. Hirshfeld surface calculations were conducted to further investigate intermolecular interactions, associated 2D fingerprint plots and enrichment ratio, revealing the quantitatively relative contribution of these interactions in the crystal packing. [ABSTRACT FROM AUTHOR]

A novel tellurium (IV) hybrid compound with 2-methylimidazole was prepared. The crystal was grown by slow evaporation method from aqueous solutions at room temperature giving birth to a new compound with formula (C4H7N2)2TeBr6. 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 = 18.577(2)Å, b = 9.1497(10)Å, c = 13.5355(17)Å, α = 90°, β = 123.835(5)°, γ = 90° and Z = 8. The structure was solved with a final R = 0.044 for 2783 independent reflections. The crystal arrangement consists of [TeBr6]2− anions surrounded by [C4H7N2]2+ cations. The stability of the structure was ensured by hydrogen bonding contacts (N–H...Br) lengths that are in the range of 3.490–3.682 Å. 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 (73.6%) interactions. Hirshfeld surface calculations were conducted to further investigate intermolecular interactions, associated 2D fingerprint plots and enrichment ratio, revealing the quantitatively relative contribution of these interactions in the crystal packing. [ABSTRACT FROM AUTHOR]

Tellurium (VI) complex with 4-ethylaminomethyl pyridine was synthesized by slow evaporation from aqueous solutions giving birth to a novel compound (C8H14N2)2TeCl6.Cl2, whose structure was determined by X-ray diffraction at room temperature. The centrosymmetric compound crystallizes in the triclinic system of space group P 1 ¯ with the parameters that follow: a = 7.2855(14)Å, b = 9.0652(17)Å, c = 10.4408(19)Å, α = 89.750(6)°, β = 83.772 (6)°, γ = 79.304 (7)° and Z = 2. The crystal structure is composed of the (TeCl6)2− anion and two 4-ethylaminomethyl pyridinium (C8H14N2)+ cations. Organic and inorganic parts are connected by hydrogen bonding contact (N–H...Cl) length varying from 3.030 to 3.352 Å. The infrared spectra (FTIR) were recorded between 4000 and 400 cm−1, substantiating the existence of vibrational modes that correspond to the organic and inorganic groups. The Raman spectra were recorded in the external region at the anionic substance vibration 50–500 cm−1. The optical absorption spectrum reveals a broad and strong luminescence band located at 4.9 eV (253 nm), which is accredited to the exaction emission. The parameters of the optimized structural and vibrational frequencies (the experimental and theoretical vibrational frequencies) were assigned. The Hirshfeld surface analysis was used to investigate the various intermolecular interactions of the two independent cations and the six chloride atoms. [ABSTRACT FROM AUTHOR]

Tellurium (VI) complex with 4-ethylaminomethyl pyridine was synthesized by slow evaporation from aqueous solutions giving birth to a novel compound (C8H14N2)2TeCl6.Cl2, whose structure was determined by X-ray diffraction at room temperature. The centrosymmetric compound crystallizes in the triclinic system of space group P 1 ¯ with the parameters that follow: a = 7.2855(14)Å, b = 9.0652(17)Å, c = 10.4408(19)Å, α = 89.750(6)°, β = 83.772 (6)°, γ = 79.304 (7)° and Z = 2. The crystal structure is composed of the (TeCl6)2− anion and two 4-ethylaminomethyl pyridinium (C8H14N2)+ cations. Organic and inorganic parts are connected by hydrogen bonding contact (N–H...Cl) length varying from 3.030 to 3.352 Å. The infrared spectra (FTIR) were recorded between 4000 and 400 cm−1, substantiating the existence of vibrational modes that correspond to the organic and inorganic groups. The Raman spectra were recorded in the external region at the anionic substance vibration 50–500 cm−1. The optical absorption spectrum reveals a broad and strong luminescence band located at 4.9 eV (253 nm), which is accredited to the exaction emission. The parameters of the optimized structural and vibrational frequencies (the experimental and theoretical vibrational frequencies) were assigned. The Hirshfeld surface analysis was used to investigate the various intermolecular interactions of the two independent cations and the six chloride atoms. [ABSTRACT FROM AUTHOR]