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JOURNAL OF SYNTHETIC CRYSTALS ›› 2024, Vol. 53 ›› Issue (10): 1784-1790.

• Research Articles • Previous Articles     Next Articles

Synthesis, Single Crystal Structure, and Magnetic Study of Divalent Metal Nickel Magnetic Complex

AN Yanyan, GUO Tingting, BIAN Jianhong, ZHAO Dan, YAN Juanzhi   

  1. Department of Materials and Chemical Engineering, Taiyuan University, Taiyuan 030032, China
  • Received:2024-05-10 Online:2024-10-15 Published:2024-10-21

Abstract: The synthesis of a novel complex [Ni3(L3-)2(1,4-bib)4(H2O)2]·5H2O (1) with three-dimensional framework structure was achieved through a hydrothermal reaction, employing 5-((4-carboxylphenoxy)-methyl) isophthalic acid (H3L) as the main oxygen-containing ligand, complemented by the N-donor ligand 1,4-bis(1H-imidazol-1-yl)benzene (1,4-bib), and Ni(II) ions. The structure of complex 1 was characterized by single crystal X-ray diffraction, powder X-ray diffraction, and elemental analysis. Complex 1 is crystallized in the triclinic crystal system of P-1 space group, and its crystallographic parameters are a=1.260 5(7) nm, b=1.349 1(7) nm, c=1.364 8(7) nm, α=111.913(8)°, β=117.251(7)°, γ=90.732(8)°, V=1.866 2(18) nm3, Z=1, Mr=1 769.66, F(000)=916, μ=0.84 mm-1, Dc=1.575 mg·m-3, S=1.06, R1=0.056, wR2=0.159. The joint contribution of semi-rigid tricarboxylic acid ligand L3-, rigid 1,4-bib and also with Ni(II) ion to form a predictable high-dimensional structure. Complex 1 is a three-dimensional network constructed through the coordination of N and O atoms with Ni ion and the structural extension of the ligand. In addition, the magnetic properties of Ni(II) compound containing single d electron center were studied: the carboxyl group in mononuclear complex 1 only binds to one cation, resulting in magnetism in the solid being determined by the behavior of single metal ions. Variable temperature magnetic susceptibility of χmT in complex 1 can be described by zero field splitting.

Key words: Ni(II) ion, complex, crystal structure, three-dimensional framework structure, magnetism

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