Self‐Assembly of a Dodecanuclear [Ni12] Wheel. Issue 13 (24th February 2021)

• Record Type: Journal Article
• Authors: Liu, Qi; Li, Chang'An; Yao, Binling; Cui, Yunshu; Cheng, Yue; Deng, Yi‐Fei; Chen, Zi‐Yi; Zhang, Yuan‐Zhu
• Is Part Of: European journal of inorganic chemistry. Issue 13(2021)
• Page Start: 1305
• Page End: 1310
• Publication Date: 2021-02-24
• Subjects: Metallacycle -- Supramolecular chemistry -- Self-assembly -- Magnetic properties -- N, O ligands -- Nickel; Chemistry, Inorganic -- Periodicals; Organometallic chemistry -- Periodicals; Bioinorganic chemistry -- Periodicals; Solid state chemistry -- Periodicals; 546
• DOI: 10.1002/ejic.202100018
• Languages: English
• ISSNs: 1434-1948

Abstract

Abstract: Self‐assembly of nickle acetate and N, N′‐di[1‐(2‐hydroxyphenyl)‐ethylidene]hydrazone (H2 L) ligand in a 2 : 1 ratio in DMF and methanol afforded a dodecanuclear wheel‐like coordination cluster: [Ni12 L6 (OAc)6 (HCOO)6 (DMF)6 ] ⋅ 4DMF ⋅ 5H2 O (1 ), in which the formate ions were likely in situ originated from the oxidation of methanol molecules and each deprotonate ligand (L 2− ) adopting the μ4 ‐η 2, η 1, η 1, η 2 coordination mode with a large C=N−N=C torsion angle of 94.1° ligates four different Ni(II) ions. Magnetic study revealed that 1 showed the long‐range antiferromagnetic order with the Neer temperature of 9.0 K while the intracluster interaction between the neighboring Ni centers is alternately ferro‐ and antiferromagnetic ( J = +5.0 /−9.2 K in the one J), mainly depending on the oxo‐bridging angles. Abstract : A dodecanuclear [Ni II 12 ] wheel in chair conformation has been assembled using the N, N′‐di[1‐(2‐hydroxyphenyl)‐ethylidene]hydrazone (H2 L) ligand. Magnetic study of the Ni12 macrocycle revealed a strong antiferromagnetic exchange with an ordering temperature of 9.0 K.