Applied Organometallic Chemistry (2018)
Update date:2022-08-10
Topics:
Kang, Quan-Peng
Li, Xiao-Yan
Zhao, Qing
Ma, Jian-Chun
Dong, Wen-Kui
Four new solvent-induced Ni(II) complexes with chemical formulae [{NiL(μ2-OAc)(MeOH)}2Ni]·2MeOH (1), [{NiL(μ2-OAc)}2(n-PrOH)(H2O)Ni]·n-PrOH (2), [{NiL(μ2-OAc)(DMF)}2Ni] (3) and [{NiL(μ2-OAc)(DMSO)}2Ni]·2DMSO (4), (H2L?=?4-Nitro-4′-chloro-2,2′-[(1,3-propylene)dioxybis(nitrilomethylidyne)]diphenol) have been synthesized and characterized by elemental analyses, FT-IR, UV–Vis spectra and X-ray crystallography. X-ray crystal structure determinations revealed that each of the Ni(II) complexes 1–4 consists of three Ni(II) atoms, two completely deprotonated (L)2? units, two μ2-acetate ions and two coordinated solvent molecules (solvents are methanol, n-propanol, water, N,N-dimethylformamide and dimethyl sulphoxide, respectively). Although the four complexes 1–4 were synthesized in different solvents, it is worthwhile that the Ni(II) atoms in the four complexes 1–4 adopt hexa–coordinated with slightly distorted octahedral coordination geometries, and the ratios of the ligand H2L to Ni(II) atoms are all 2: 3. The complexes 1–4 possess self-assembled infinite 1D, 3D, 1D and 2D supramolecular structures via the intermolecular hydrogen bonds, respectively. In addition, fluorescence behaviors were investigated in the complexes 1–4.
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