Low pH-induced lone-pair activity in the hybrid (C<sub>6</sub>H<sub>10</sub>N<sub>2</sub>)[SnCl<sub>3</sub>]Cl: Chemical study and physical characterizations


Sayer I., Necmi D., Ghalla H., Naïli H.

JOURNAL OF MOLECULAR STRUCTURE, cilt.1248, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 1248
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1016/j.molstruc.2021.131403
  • Dergi Adı: JOURNAL OF MOLECULAR STRUCTURE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, INSPEC
  • Anahtar Kelimeler: DFT calculations, Optical absorption, Photoluminescence, Thermal studies, Tin
  • Ondokuz Mayıs Üniversitesi Adresli: Evet

Özet

By changing the synthesis method and through the pourbaix diagram, a novel 0D organic-inorganic hybrid like perovskite system was crystallized by slow evaporation in an aqueous solution of 2(aminomethyl) pyridine (2-amp) and tin chloride. Compound with the formula (C6H10N2)[SnCl3]Cl was characterized by single-crystal X-ray diffraction, Infrared spectroscopy (IR), and UV-Visible (UV-Vis) as well as photoluminescence (PL) technique and thermal analysis. The crystals of (C6H10N2)[SnCl3]Cl belong to the orthorhombic system with the Pbca space group. The crystalline stability is ensured by a three-dimensional network of N-H center dot center dot center dot Cl hydrogen bonds. Theoretical calculations were performed using density functional theory with the B3LYP/LanL2DZ level for studying the molecular structure and vibrational spectra of the title compound. A satisfactory agreement has been found between the calculated and the experimental vibrational frequencies. UV-Vis reveals that (C6H10N2)[SnCl3]Cl undergoes two absorption bands with an energy gap estimated to 3.27 eV. The material exhibits an important broad-band white light emission with a correlated color temperature of 4989 K with chromaticity coordinates (CIE) of (0.34, 0.33) and CRI of 92. According to others s 2 Tin-complexes, this emission is mainly resulting from the self-trapped exciton transitions within the inorganic framework. Our contribution of luminescent 0D organic-inorganic hybrid materials as lead-free lighting systems opens up a new paradigm in functional materials design. (C) 2021 Elsevier B.V. All rights reserved.