Synthesis, crystal structure, and magnetic analysis of Ni(II) polymer based on N-[(3-pyridine)-sulfonyl]aspartate

ABSTRACT

The title coordination polymer [Ni₃(L)₂(4,4′-bipy)(H₂O)₄]_n (1) (H₃L = N-[(3-pyridine)-sulfonyl]aspartate) has been synthesized by hydrothermal synthesis method and characterized by single-crystal X-ray diffraction, IR, and elemental analysis. X-ray diffraction analysis shows that polymer 1 belongs to the orthorhombic system, space group Fdd2, with a = 12.9791(12) Å, b = 51.571(4) Å, c = 11.3833(11) Å, V = 7619.3(12) ų. The racemization of chiral ligands occurs at high temperature in polymer 1. The 4,4′-bipy bridges two adjacent Ni²⁺ to form a three-dimensional structure of polymer 1.Furthermore, magnetic measurements show that there are weak antiferromagnetic interactions between the adjacent Ni²⁺ in polymer 1.

KEYWORDS:

• Synthesis
• crystal structure
• magnetic
• polymer

Funding

The authors acknowledge the financial support from the Guangxi Natural Science Foundation (No. 2014GXNSFAA118035) and scientific research and technological development project of Guilin (No. 20110330).