Two novel quinoline-decorated half-salamo-type Co(II) complexes: Synthesis, crystal structure, Hirshfeld surface analysis, DFT calculation and fluorescence properties

Tong, Li; Man, Li-Li; Li, Xun; Dong, Wen-Kui

doi:10.1016/j.molstruc.2023.136372

Cited by 21 publications

(1 citation statement)

References 70 publications

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“…1,2 In recent years, both ring-closed organic ligands and ring-opening organic ligands have been extensively studied by researchers. [3][4][5] Among them, C-type open-ring chain organic ligands have been widely studied due to their good flexibility, and the salamo-like ligands synthesized on the basis of salen-like Schiff bases have great improvements in chain length, flexibility, and stability. [6][7][8][9][10][11] At the same time, the symmetrical double salamo-like ligand is a typical C-type long-chain ligand.…”

Section: Introductionmentioning

confidence: 99%

Experimental and computational studies of two binuclear Co(II) and Ni(II) bis(salamo)‐like complexes

Yan,

La,

et al. 2023

Applied Organom Chemis

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Acetate‐bridged binuclear Co(II) and Ni(II) complexes, [Co2(L)(μ‐OAc)(EtOH)] (1) and [Ni2(L)(μ‐OAc)(EtOH)] (2) were synthesized via the reaction of a new bis(salamo)‐like ligand with two different metal(II) acetates. X‐ray single crystal diffraction analyses showed that two metal(II) ions (Co or Ni) occupy two sets of N2O2 cavities, respectively. The acetate group bridges the two metals, and the ethanol oxygen atom participates in the coordination. Furthermore, UV–vis titration experiments clearly indicated that the complexation between H3L and M(II) ions leads to the 1:2 complexes [(L)M2]+ through a highly synergistic process. Bond valence sum (BVS) calculations exhibited that the Co(II) and Ni(II) ions are divalent. Secondly, the ligand H3L highest occupied molecular orbital–lowest unoccupied molecular orbital (HOMO‐LUMO) gap analysis and surface electrostatic potential were theoretically analyzed by theoretical calculation (density functional theory), and the reactivity of M(II) ions and the ligand in the complex formation process was demonstrated. Finally, the microscopic properties of the complexes were deeply understood through the calculation of the weak intramolecular interactions and the unstressed regions outside the complexes.

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Section: Introductionmentioning

confidence: 99%

Experimental and computational studies of two binuclear Co(II) and Ni(II) bis(salamo)‐like complexes

Yan,

La,

et al. 2023

Applied Organom Chemis

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Anion‐Modulated Construction of Two Novel Tetra‐ and Hepta‐Nuclear Ni(II) Salamo‐Type Clusters: Comparison of the DFT Calculations and Weak Interaction Analyses

Zhang,

Zheng

et al. 2024

Applied Organom Chemis

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Two novel tetra‐ and hepta‐nuclear Ni(II) salamo‐type clusters, [Ni4(L)2(μ2‐Cl)2(μ3‐OH)2(EtOH)2]⋅4CH2Cl2 (1) and [Ni7(L)3(μ3‐OEt)2(μ3‐OH)6(EtOH)2] (2), were constructed by modulating different anions (Cl− and NO3−). X‐ray crystallographic researches revealed that cluster 1 is a tetranuclear cluster consisting of a symmetric binuclear structure in which chloride ions are involved in coordination. Although cluster 2 consists of seven Ni(II) ions, three deprotonated (L)2− parts, two μ3‐ethoxy groups, six μ3‐OH− anions, and two coordinated ethanol molecules, in which it is quite rare for a large number of water molecules to be deprotonated to participate in the bridging of the cluster due to the alkaline environment. TEM electron scanning displayed the distinct shapes. Comparison of DFT calculations revealed that cluster 2 is less chemically reactive and more kinetically stable, which is in accordance with the analytical results of weak interactions, where the stronger weak interaction forces were presented, the more stable the molecule is. Finally, a comparative analysis of UV–Vis, IR, and fluorescence spectra were carried out.

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Self-assembly and peripheral guest-binding of two triangular Zn(II) helicates

Zhao,

Wu,

Lou

et al. 2024

Chem. Pap.

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A novel complex [Zn II 3 L 2 ] 6+ was designed and then synthesized by using subcomponent self-assembly of zinc trifluoromethanesulfonate (Zn(OTf) 2 ), 2,4,6-tri(3-aminophenoxy) triazine, and 2-formylpyridine in CH 3 CN solution. The target compound's structure as a sandwich-like helicate was verified by 1 H NMR and ESI-MS measurements, and the hostguest interactions between the complex and a number of guest molecules were investigated. It was discovered that the effect of the host-guest interaction significantly changed when the aldehyde component was replaced by 3-methylpyridine-2-carboxaldehyde, which suggested that the guest-binding sites may occur around the peripheral apertures of the complex. Also the binding behavior of the tetraphenylborate guests was further investigated, which quantified the host-guest stoichiometry in the ratio of 1:2.

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Two novel quinoline-decorated half-salamo-type Co(II) complexes: Synthesis, crystal structure, Hirshfeld surface analysis, DFT calculation and fluorescence properties

Cited by 21 publications

References 70 publications

Experimental and computational studies of two binuclear Co(II) and Ni(II) bis(salamo)‐like complexes

Experimental and computational studies of two binuclear Co(II) and Ni(II) bis(salamo)‐like complexes

Anion‐Modulated Construction of Two Novel Tetra‐ and Hepta‐Nuclear Ni(II) Salamo‐Type Clusters: Comparison of the DFT Calculations and Weak Interaction Analyses

Self-assembly and peripheral guest-binding of two triangular Zn(II) helicates

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