Synthesis, Structure and Characterization of a Strontium Complex

Abstract

Abstract: A Sr(II) complex [Sr(L)₂(H₂O)₄]_n (1) was synthesized with 1,4,5,8-naphthalene tetracarboxylic acid (H₄L1) and strontium chloride hexahydrate under solvothermal conditions. The structure was characterized by elemental analysis (EA), single crystal X-ray diffraction (SXRD), powder X-ray diffraction (PXRD), infrared spectroscopy (IR) and thermogravimetric analysis (TGA). The single crystal X-ray diffraction results indicate that H₄L1 undergoes in-situ reaction to generate 1,3-dioxo-1H,3H-benzo[de]isomere-6,7-dicarboxylic acid (H₂L). In complex 1, each Sr(II) atom is located in the geometric configuration of a square antiprism. The L^- ligands connect Sr atoms to form a one-dimensional chain structure. 2D supramolecular structure is formed through hydrogen bonding and π…π stacking interactions. The solid states luminescence behavior of complex 1 was explored. It is found that complex 1 produces a wide emission spectrum band (450~690 nm) at the excitation wavelength of 211 nm, and the maximum emission wavelength appears at 535 nm. Therefore, it can be seen that complex 1 is a potential green light material.

Key words: solvent thermal synthesis, strontium complex, crystal structure, fluorescence property, in-situ reaction

CLC Number:

O641.4

BAO Yuting, LIANG Yinong, SUN Zan. Synthesis, Structure and Characterization of a Strontium Complex[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2024, 53(2): 293-299.

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