Yunes Abbasi Tyula - Department of Chemistry, Faculty of Science, Ilam University, P.O. Box ۶۹۳۱۵۵۱۶, Ilam, Iran.
Parisa Moradi - Department of Chemistry, Faculty of Science, Ilam University, P.O. Box ۶۹۳۱۵۵۱۶, Ilam, Iran.
Tavan Kikhavani - Department of Chemical Engineering, Faculty of Engineering, Ilam University, Ilam, Iran.

Boehmite is one of the attractive mineral materials, which was recently employed as supportin the synthesis of heterogenous catalysts [۱]. Boehmite consists of double layers of octahedronstructure from oxygen and a central aluminum atom with a cubic orthorhombic unit cell [۲].Boehmite nanomaterials have unique properties such as excellent surface area, nanometer size ofcrystallite, easy availability, non-toxicity, and thermal stability [۳]. Beside, samarium has rarelybeen reported as a catalyst for the synthesis of organic compounds. Regarding the fact that selectiveand reusable catalysts are the main principles of green chemistry, herein a new samarium complexon boehmite nanoparticles (Sm-bis(PYT)@boehmite) was investigated as a selective andrecyclable nanocatalyst in the synthesis of ۵-substituted ۱H-tetrazole derivatives in PEG-۴۰۰ as agreen solvent. Because, tetrazoles are an important group of organic compounds which can be usedin various fields such as coordination chemistry, drugs, synthetic organic chemistry, medicinalchemistry [۴]. Sm-bis(PYT)@boehmite was characterized using thermogravimetric analysis(TGA), Brunauer-Emmett-Teller (BET), wavelength dispersive X-ray spectroscopy (WDX),energy dispersive X-ray spectroscopy (EDS), scanning electron microscope (SEM), dynamic lightscattering (DLS), Inductively coupled plasma mass spectrometry (ICP-MS), Fourier transforminfrared spectroscopy (FT-IR), and X-ray diffraction (XRD) pattern. Notably, Smbis(PYT)@boehmite is stable and has a heterogeneous nature. Thus, it can be reused for severalruns without any re-activation.

Green Solvent, Boehmite Nanoparticles; Reusable Catalyst; EnvironmentallyFriendly Catalyst, Homoselective Catalyst, Tetrazole