Unusual fluorescence behavior of first 3d-3d′ heterobimetallic [Cu(II)2Mn(II)] complex bearing a bis(salamo)-based ligand

Zhang, Ting; Li, Wen-Da; Li, Xun; Peng, Yun-Dong; Dong, Wen‐Kui

doi:10.1016/j.molstruc.2022.132854

Cited by 45 publications

(3 citation statements)

References 54 publications

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“…The coordination mode of Zn3 is similar to that of Zn1. However, the apical site of the lowermost Ni(II) atom (Ni4) was occupied by O11 (50% occupancy factor) and O11A (50% occupancy factor), which has a distorted tetragonal pyramidal geometry …”

Section: Resultsmentioning

confidence: 99%

“…However, the apical site of the lowermost Ni(II) atom (Ni4) was occupied by O11 (50% occupancy factor) and O11A (50% occupancy factor), which has a distorted tetragonal pyramidal geometry. 35 Similarly, as shown in Figure 4, there are abundant hydrogen bond interactions in complex 2, including five pairs of intramolecular hydrogen bonds and two pairs of intermolecular hydrogen bonds. In addition, a significant intramolecular C− H•••π interaction and two pairs of intramolecular π•••π interactions were also observed in complex 2.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

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Coordination-Driven Salamo-Salen-Salamo-Type Multinuclear Transition Metal(II) Complexes: Synthesis, Structure, Luminescence, Transformation of Configuration, and Nuclearity Induced by the Acetylacetone Anion

Yan

et al. 2023

Inorg. Chem.

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A flexible polydentate Salamo-Salen-Salamo hybrid ligand H 4 L was designed and synthesized, which has rich pockets (salamo and salen pockets) so that it may have fascinating coordination patterns with transition metal(II) ions. Four multinuclear transition metal(II) complexes, novel butterflyshaped homotetranuclear 4), have been synthesized and characterized by single-crystal X-ray diffraction. The effects of different anions [OAc − and (O 2 C 5 H 7 ) 2− ] on the complexation behavior of H 4 L with transition metal(II) ions were studied by UV−vis spectrophotometry. The fluorescent properties of the four complexes were studied with zebrafish, which are expected to be a potential light-emitting material. Ultimately, interaction region indicator (IRI) valuations, Hirshfeld surface analyses, density functional theory (DFT & TD-DFT), electrostatic potential analyses (ESP), and simulations were carried out to further demonstrate the weak interactions and electronic properties of the free ligand and its four complexes.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Experimental Sectionmentioning

confidence: 99%

Coordination-Driven Salamo-Salen-Salamo-Type Multinuclear Transition Metal(II) Complexes: Synthesis, Structure, Luminescence, Transformation of Configuration, and Nuclearity Induced by the Acetylacetone Anion

Yan

et al. 2023

Inorg. Chem.

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“…[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. It is easy to synthesize and easy to modify, and it may form a helical configuration in space, which is of great research value.…”

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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Structural, spectroscopic, fluorescent, and computational studies of binuclear copper (II) and zinc (II) complexes with an asymmetric salamo‐type ligand

Chai,

Li‐Tong,

Zhang

et al. 2024

Applied Organom Chemis

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Salamo‐type ligand H2L was designed and synthesized and reacted with Cu (II) and Zn (II) acetate, respectively, to obtain two binuclear Cu (II) and Zn (II) complexes: [Cu2(L)2]·2CH3OH (1) and [Zn2(L)2] (2) having the same coordination number but distinct geometries. Complex 1 is a Cu (II) complex containing two crystalline ethanol molecules, where two Cu (II) atoms are surrounded by two utterly deprotonated (L)2− parts, forming slightly twisted tetragonal pyramidal configurations of pentacoordinate. In complex 2, two utterly deprotonated (L)2− parts surround two Zn (II) atoms, forming pentadentate twisted triangular bipyramidal configurations. The complexes were elucidated via IR analyses and ultraviolet spectroscopy. Using DFT theoretical calculation, MEPs, IRI, and Hirshfeld surface analysis to investigate further the molecular interactions and reaction sites. Ultimately, the fluorescence characteristics of H2L and its complexes 1 and 2 were discussed.

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Unusual fluorescence behavior of first 3d-3d′ heterobimetallic [Cu(II)2Mn(II)] complex bearing a bis(salamo)-based ligand

Cited by 45 publications

References 54 publications

Coordination-Driven Salamo-Salen-Salamo-Type Multinuclear Transition Metal(II) Complexes: Synthesis, Structure, Luminescence, Transformation of Configuration, and Nuclearity Induced by the Acetylacetone Anion

Coordination-Driven Salamo-Salen-Salamo-Type Multinuclear Transition Metal(II) Complexes: Synthesis, Structure, Luminescence, Transformation of Configuration, and Nuclearity Induced by the Acetylacetone Anion

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

Structural, spectroscopic, fluorescent, and computational studies of binuclear copper (II) and zinc (II) complexes with an asymmetric salamo‐type ligand

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