Impact of ligand rotation: Synthesis, crystal structures and third-order nonlinear optical properties of Mn(II), Cu(II) and Ni(II) complexes with 5‑diethylamino‑2‑((4‑(phenyldiazenyl) phenylimino) methyl) phenol

Zhou, Jinhua; Guo, Lu; Yu, Wei‐Dong; Zhang, Zheng-Hao; Wang, Yuan; Yan, Jun

doi:10.1016/j.inoche.2018.11.023

Cited by 14 publications

(3 citation statements)

References 49 publications

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“…Transition metal coordination compounds with Schiff bases continue to attract the attention of researchers because of the easier synthesis, the stability of the molecular structures and the large diverse properties observed [1]- [11]. Indeed catalytic [12] [13] [14], optical [15], magnetic [16] [17], fluorescent [18] [19] and biological activities [8] [20] [21] [22] are reported. The complexes derived from the first row of transition metals can give several models of metalloenzymes [23] [24] and metalloproteins [25] [26].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Spectroscopic Studies and X-Ray Diffraction of Heptacoordinated Mn(II) and Co(II) Complexes with Ligands Derived from Carbonohydrazide

Seck¹,

Sy²,

Lo³

et al. 2019

OJIC

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The ligand 1-(1-(pyridin-2-yl)ethylidene)carbonohydrazide (H 4 L 1) and 1-(pyridin-2-ylmethylene)carbonohydrazide (H 4 L 2) were prepared by reaction of carbonohydrazide with 2-acetylpyridine or pyridine carbaldehyde respectively in a reflux methanol solution. The complexes are prepared by reaction of the ligand with the appropriate metal salt. These complexes are well characterized by elemental analysis, IR and UV spectroscopies and their structure were determined by single X-ray diffraction technic. In the crystal of the dinuclear complex [Mn 2 (H 4 L 1) 2 (H 2 O) 4 ]•Cl 4 , 1) each Mn(II) center is seven coordinated by two nitrogen atom and one carbonyl atom of the one ligand and one nitrogen atom and one carbonyl oxygen atom of another ligand molecule. The coordination sphere is completed by two water molecules. Each of the carbonyl oxygen atom acts as bridge between the two Mn(II) centers. In the mononuclear complex [Co(H 4 L 2)(NO 3)(H 2 O) 2 ]•(NO 3); 2) the Co(II) center is heptacoordinated. The ligand acts in tridentate fashion through two nitrogen atoms and one carbonyl oxygen atom. Two water molecules lie in the apical positions. One nitrate group acts in bidentate manner while the other nitrate group remains uncoordinated. In both complexes the coordination polyhedral are best described as a pentagonal bipyramid. The molecules are linked together in each case by multiple hydrogen bond interaction resulting in a three-dimensional network. The crystallographic data has been deposited in Cambridge Crystallographic Data Centre [CCDC No. 1944387 (complex 1

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Section: Introductionmentioning

confidence: 99%

Synthesis, Spectroscopic Studies and X-Ray Diffraction of Heptacoordinated Mn(II) and Co(II) Complexes with Ligands Derived from Carbonohydrazide

Seck¹,

Sy²,

Lo³

et al. 2019

OJIC

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“…OC red was synthesized by reducing imines of previously reported OC. [14] from benzene to generated imine [16] by the redox reaction between amine and Au(III) (Figure 3c, see Supplementary Section 3.1 for the detail). This result suggests that OC red can reduce up to 8.0 equivalents of Au(III) to generate Au(I) and/or Au(0) species.…”

Section: Investigations Of the Atomic Scale Seed Formationmentioning

confidence: 99%

“…The absorption bands between 200 and 350 nm are assignable to π-π* transition of OC red (283 nm), HOMO-LUMO transition of the ligand coordinated to the metal ions (230 nm), and charge transfer transition from Cl À ion to Au ion (320 nm), respectively (Figure S4). [16][17] These absorption bands increased linearly during the addition of Na[AuCl 4 ] showing the change in slope after the addition of 8.0 equivalents. It is suggested that the spectral changes before the addition of 8.0 equivalents are due to the reduction of Au(III) by OC red , whereas the spectral changes after the addition of 8.0 equivalents are due to the coordination of the amine moieties in OC red to Au(III).…”

Section: Investigations Of the Atomic Scale Seed Formationmentioning

confidence: 99%

Formation and Growth of Atomic Scale Seeds of Au Nanoparticle in the Nanospace of an Organic Cage Molecule

Mihara,

Machida,

Takeda

et al. 2023

Chemistry A European J

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Seed‐mediated growth has been widely used to synthesize noble metal nanoparticles with controlled size and shape. Although it is becoming possible to directly observe the nucleation process of metal atoms at the single atom level by using transmission electron microscopy (TEM), it is challenging to control the formation and growth of seeds with only a few metal atoms in homogeneous solution systems. Herein, we report site‐selective formation and growth of atomic scale seeds of the Au nanoparticle in a nanospace of an organic cage molecule. We synthesized a cage molecule with amines and phenols, which were found to both capture and reduce Au(III) ions to spontaneously form the atomic scale seeds containing Au(0) in the nanospace. The growth reaction of the atomic scale seeds afforded Au nanoparticles with an average diameter of 2.0 ± 0.2 nm, which is in good agreement with the inner diameter of the cage molecule.

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Novel zinc (II) and nickel (II) complexes of a quinazoline‐based ligand with an imidazole ring: Synthesis, spectroscopic property, antibacterial activities, time‐dependent density functional theory calculations and Hirshfeld surface analysis

Chai

et al. 2022

Applied Organom Chemis

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Two complexes [Zn(L) 2 (CH 3 OH) 2 ](NO 3 ) 2 (1) and [Ni(L) 3 ]Á(NO 3 ) 2 (2) (L = 2-[2-imidazolyl]-4-methyl-1,2-dihydroquinazoline-N 3 -oxide) were obtained successfully by means of slow evaporation solution technique (SEST)and characterized using elemental analysis, FT-IR, UV-vis, and fluorescence spectroscopic. X-ray diffraction revealed that the metal in complex 1 is chelated by two L ligands and two lattice methanol molecules, whereas in 2 by three L ligands, counterbalanced by nitrate ions. The crystal structures of both showed infinite 1-D, 2-D, and 3-D supramolecular architecture due to intermolecular interactions. Most strikingly, Zn (II) complex showed different fluorescence properties in diverse solvents. The antimicrobial activities of all compounds were compared and showed perceptible efficiency against Gramnegative and Gram-positive bacteria. Electrostatic potential (ESP) calculation was used to predict the nucleophilic and electrophilic attack sites. Density functional theory (DFT) calculation results showed good agreement with experimental data, as well as the frontier molecular orbital energy gaps were detected by time-dependent (TD)-DFT method with HOMO-LUMO calculations. Additionally, the non-covalent interactions of both complexes were further quantified and explored with the help of Hirshfeld surface analysis.

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Impact of ligand rotation: Synthesis, crystal structures and third-order nonlinear optical properties of Mn(II), Cu(II) and Ni(II) complexes with 5‑diethylamino‑2‑((4‑(phenyldiazenyl) phenylimino) methyl) phenol

Cited by 14 publications

References 49 publications

Synthesis, Spectroscopic Studies and X-Ray Diffraction of Heptacoordinated Mn(II) and Co(II) Complexes with Ligands Derived from Carbonohydrazide

Synthesis, Spectroscopic Studies and X-Ray Diffraction of Heptacoordinated Mn(II) and Co(II) Complexes with Ligands Derived from Carbonohydrazide

Formation and Growth of Atomic Scale Seeds of Au Nanoparticle in the Nanospace of an Organic Cage Molecule

Novel zinc (II) and nickel (II) complexes of a quinazoline‐based ligand with an imidazole ring: Synthesis, spectroscopic property, antibacterial activities, time‐dependent density functional theory calculations and Hirshfeld surface analysis

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