Structural insights into three novel Cu(II), Ni(II) and Zn(II) complexes derived of a pyridine-containing N4-cavity bisoxime ligand

Sun, Yin‐Xia; Zhang, Wenze; Li, Juan; Zhang, Yang; Dong, Wen‐Kui

doi:10.1016/j.ica.2021.120723

Cited by 31 publications

(3 citation statements)

References 39 publications

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“… 27 Strong absorption observing at 2921 cm −1 and 2850 cm −1 were attributed to the stretching vibrations of C–H from CH 3 and CH 2 moieties corresponding to CH 3 and CH 2 moieties in CPC. 27,28 The absorption observing at 1628 cm −1 was probably due to the vibrations of C N. 40 The absorption observing at 1465 cm −1 and 1380 cm −1 were assigned to the characteristic absorption of the pyridine ring. 40,41 These results confirmed the presence of pyridinium rings and the aliphatic carbon deriving from CPC on the surface of the CDs.…”

Section: Resultsmentioning

confidence: 99%

“…27,28 The absorption observing at 1628 cm −1 was probably due to the vibrations of CN. 40 The absorption observing at 1465 cm −1 and 1380 cm −1 were assigned to the characteristic absorption of the pyridine ring. 40,41 These results confirmed the presence of pyridinium rings and the aliphatic carbon deriving from CPC on the surface of the CDs.…”

Section: Resultsmentioning

confidence: 99%

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Multiple fluorescence response behaviours to proteins/bacteria and selective antibacterial activity of cetylpyridinium chloride (CPC)-based cationic carbon dots

Yang

Xie

2022

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Multiple fluorescence response behaviours to proteins/bacteria and selective antibacterial activity of cetylpyridinium chloride (CPC)-based cationic carbon dots

Yang

Xie

2022

RSC Adv.

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“…Oxime-type salamo-like ligands are improved on the basis of salen-like Schiff base ligands, so the synthesis of the complexes is similar to the Schiff base metallization method. [51][52][53][54] Here, because acetate is alkaline in ethanol solution, in the process of synthesizing the above two complexes, because the effect of acetate group is the same as that of triethylamine or sodium hydroxide; no triethylamine or NaOH is added.…”

Section: Synthesis Of Complexes 1 Andmentioning

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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Supramolecular Self‐Assembly of Novel Double Chloride‐Bridging Trinuclear Ni(II) Mono‐Salamo‐Type Cluster: Experimental and Theoretical Analysis

Yuan,

Chen,

Liu

et al. 2024

Applied Organom Chemis

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A mono‐salamo‐type ligand H2L was prepared to utilize 3‐methoxysalicylaldehyde and a semi‐salamo‐type compound, and its novel trinuclear Ni(II) cluster with two significantly various configurations in the solid state was obtained by reaction of H2L with Ni(II) ions. The trinuclear structure of the Ni(II) cluster was validated by x‐ray technique, and Ni(II) ions exhibited hexa‐coordinated twisted octahedrons. Its structural formula is [Ni3(L)2(μ2‐Cl)2(EtOH)2]. Chloride ions have also successfully double bridged to participate in coordination, and play a critical impact in the trinuclear configuration's stability and charge balance. Two solvent ethanol molecules are also participated in coordination. The coordination ratio of the ligand to the metal ion was verified to be 2:3 by UV–Vis absorption titration spectroscopy. The HOMO and LUMO energies of the frontline molecular orbitals of H2L and the complex were analyzed by DFT calculations, and the energy gap value of the ligand H2L was 4.29 eV, and that of the complex was 0.72 eV. The ligand combined with the metal decreased the energy gap value and produced a more active complex. Furthermore, Hirshfeld surface analysis visualizes the weak interactions of crystalline molecules, and these abundant weak interactions play an especially critical effect in the supramolecular structural self‐assembling. The fluorescent researches proclaimed that the fluorescence intensity of the cluster significantly decreased compared with the ligand, suggesting that this ligand and complex have greater promise for fluorescence sensing.

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Structural insights into three novel Cu(II), Ni(II) and Zn(II) complexes derived of a pyridine-containing N4-cavity bisoxime ligand

Cited by 31 publications

References 39 publications

Multiple fluorescence response behaviours to proteins/bacteria and selective antibacterial activity of cetylpyridinium chloride (CPC)-based cationic carbon dots

Multiple fluorescence response behaviours to proteins/bacteria and selective antibacterial activity of cetylpyridinium chloride (CPC)-based cationic carbon dots

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

Supramolecular Self‐Assembly of Novel Double Chloride‐Bridging Trinuclear Ni(II) Mono‐Salamo‐Type Cluster: Experimental and Theoretical Analysis

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