Temperature/Solvent-Induced Two Magnetic Nickel Coordination Compounds with 5-Aminodiacetic Isophthalate

• Published in: Journal of cluster science 2020-11, Vol.31 (6), p.1199-1206
• Main Authors: Tu, Xingxin, Chen, Hongjuan, Zhang, Shaowei, Ma, Pengtao
• Format: Article
• Language: English
• Subjects: Acids; Antiferromagnetism; Aqueous solutions; Catalysis; Chemistry; Chemistry and Materials Science; Coordination compounds; Crystallography; Crystals; Data collection; Hydrogen; Hydrogen bonds; Inorganic Chemistry; Ligands; Magnetic properties; Nanochemistry; Nickel compounds; Original Paper; Physical Chemistry; Radiation; Single crystals; Solvents
• ISSN: 1040-7278; 1572-8862
• DOI: 10.1007/s10876-019-01726-1

The reaction of Ni(OAc) 2 ·4H 2 O and 5-aminodiacetic isophthalate (H 4 adip) in the aqueous solution to produce a discrete nickel coordination compound, {[Ni 1.5 (H 2 O) 9 ][Ni(adip)(H 2 O) 3 ][Ni 1.5 (adip)(H 2 O) 5 ]·10H 2 O} 2 ( 1 ), whereas another nickel compound was isolated by assembling the same reactants at 80 °C in the mixed solvents of H 2 O and DMA, {[Ni(H 2 O) 6 ][Ni 3 (adip) 2 (H 2 O) 8 ]·7.5H 2 O} 2 ( 2 ). Both 1 and 2 were structurally characterized by single-crystal X-ray diffraction, and other methods. The skeleton unit of 1 consisted of five crystallographically independent Ni 2+ ions and two types of adip 4− ligands, and the adjacent units were further generated a 3D supramolecular architecture through hydrogen bonds and π ··· π stacking interactions. Analogously, four types of six-coordinated Ni 2+ ions and two kinds of adip 4− ligands in 2 also formed a 3D supramolecular structure by hydrogen bonds and π ··· π stacking interactions. Moreover, the magnetic properties of 1 and 2 had been examined, and the results suggested that the presence of antiferromagnetic interactions among Ni 2+ ions in both compounds.