Salamo-type trinuclear and tetranuclear cobalt(II) complexes based on a new asymmetry Salamo-type ligand: syntheses, crystal structures, and fluorescence properties

Dong, Wen‐Kui; Lan, Pengfei; Zhou, Wenying; Zhang, Yang

doi:10.1080/00958972.2016.1168520

Cited by 70 publications

(26 citation statements)

References 35 publications

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“…And the fluorescence intensity increased significantly. When the added amount of Zn 2+ reached 1.0 equiv., the fluorescence emission intensity became stable, which indicates a 1:1 stoichiometry between Zn 2+ and H2L 1 . The enhancement of fluorescence is due to the coordination of metal ions with ligands [67].…”

Section: Fluorescence Propertiesmentioning

confidence: 88%

“…Luminescence spectra in solution were recorded on a Hitachi F-7000 spectrometer (Shimadzu, Japan). 1 H NMR spectra were determined by a German Bruker AVANCE DRX-400 spectrometer (Bruker AVANCE, Billerica, MA, USA). X-ray single crystal structure determinations were carried out on a Bruker Smart Apex CCD diffractometer (Bruker AVANCE, Billerica, MA, USA).…”

Section: Methodsmentioning

confidence: 99%

“…The major reaction steps involved in the synthesis of H2L 1 and HL 2 are given in Scheme 1. 8-Formyl-7-hydroxy-4-methylcoumarin was prepared according to reported procedure [44].…”

Section: Synthesis Of H2lmentioning

confidence: 99%

“…As we know, Salen-type ligands (R-CH=N-(CH 2 ) 2 -N=CH-R) and their metal complexes have been extensively investigated in modern coordination chemistry for several decades [1][2][3][4][5], which have been extensively investigated in potential application in biological fields [6][7][8][9][10][11][12][13], electrochemical conducts [14,15], nonlinear optical materials [16][17][18][19][20], magnetic materials [21][22][23][24][25], luminescence properties [26][27][28][29][30][31][32], and supramolecular architecture [33][34][35][36][37], and so on. Chemical modifications of substituent or functional groups in the Salen N 2 O 2 ligands are effective in exchanging the structures or the main functions of complexes, such as salamo ligand, a Salen analogue, (R-CH=N-O-(CH) n -O-N=CH-R) is one of the most versatile ligands and the large electronegativity of oxygen atoms is expected to strongly affect the electronic properties of the N 2 O 2 coordination sphere, which can lead to different and novel structures and properties of the resulting complexes [38].…”

Section: Introductionmentioning

confidence: 99%

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Tri- and Mono-Nuclear Zinc(II) Complexes Based on Half- and Mono-Salamo Chelating Ligands

et al. 2017

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Two newly designed complexes, [Zn(L 1 )(EtOH)] (1) and [{Zn(L 2 )(OAc) 2 } 2 Zn]·CHCl 3 (2) derived from salamo and half-salamo chelating ligands (H 2 L 1 and HL 2 ) have been synthesized and characterized by elemental analyses, IR and UV-VIS spectra, fluorescence spectra, and X-ray crystallography. Complex 1 shows a slightly distorted tetragonal pyramid and forms an infinite 3D supramolecular structure. All of the Zn(II) ions in complex 2 are hexa-coordinated with slightly distorted octahedral geometries. Complex 2 possesses an infinite 2D space structure. The fluorescence titration experiments were used to characterize fluorescence properties of complexes 1 and 2. And the normalized fluorescent spectra exhibit that complexes 1 and 2 have favourable fluorescent emissions in different solvents.

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Section: Fluorescence Propertiesmentioning

confidence: 88%

Section: Methodsmentioning

confidence: 99%

“…The major reaction steps involved in the synthesis of H2L 1 and HL 2 are given in Scheme 1. 8-Formyl-7-hydroxy-4-methylcoumarin was prepared according to reported procedure [44].…”

Section: Synthesis Of H2lmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Tri- and Mono-Nuclear Zinc(II) Complexes Based on Half- and Mono-Salamo Chelating Ligands

et al. 2017

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“…Salen and its derivatives are a very important versatile ligand in coordination chemistry as a kind of multidentate ligands [1][2][3][4], and their metal complexes [5][6][7] have a very wide range of applications, such as optical and magnetic materials [8][9][10][11], biological activities [12], supramolecular architectures [13][14][15]. The crystal structure shows that the title complex consists of three Co(II) atoms, two (L) 2− units and two acetate ions.…”

Section: Discussionmentioning

confidence: 99%

Crystal structure of bis(μ₂-acetato-κ² O:O′)-bis{μ₂-4-chloro-2-(8-(4-(diethylamino)-2-oxidophenyl)-3,6-dioxa-2,7-diazaocta-1,7-dien-1-yl)phenolato-κ⁶ O:O,N,N′,O′′:O′′}tricobalt(II), C₄₄H₄₉Cl₂Co₃N₆O₁₂

Yang

Wang

Lan

et al. 2017

Zeitschrift Für Kristallographie - New Crystal Structures

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CCDC no.: 1531177The crystal structure is shown in the figure. Tables 1 and 2 contain details on crystal structure and measurement conditions and a list of the atoms including atomic coordinates and displacement parameters. Source of materialA methanol solution (3.0 mL) of cobalt acetate tetrahydrate (370.6 mg 0.015 mmol) was added to a acetone solution (2.0 mL) of H 2 L 4-(diethylamino)-2-hydroxybenzaldehyde O-(2-(((5-chloro-2-hydroxybenzylidene)amino)oxy)ethyl) oxime (4.01 mg, 0.010 mmol) at room temperature, the color of

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Two two‐dimensional supramolecular copper(II) and cobalt(III) complexes derived from a new quinazoline‐type ligand: Syntheses, structures, and spectral, thermal, electrochemical and antimicrobial activity studies

Chai

Tang

Zhang

et al. 2017

Applied Organom Chemis

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Two two‐dimensional supramolecular copper(II) and cobalt(III) complexes, Cu(L1)2 (1; HL1 = 2‐hydroxy‐3‐methoxybenzaldehyde oxime) and [Co(L2)2]2⋅2CH3COOCH2CH3 (2; HL2 = 1‐(2‐{[(E)‐3‐methoxy‐2‐hydroxybenzylidene]amino}phenyl)ethanone oxime), have been synthesized via complexation of Cu(II) nitrate trihydrate and Co(II) acetate tetrahydrate with HL. A plausible reaction mechanism for the formation of HL1 is proposed. HL was synthesized and characterized using infrared, 1H NMR and 13C NMR spectra, as well as elemental analysis. Complexes 1 and 2 were investigated using single‐crystal X‐ray diffraction and have a 2:1 ligand‐to‐metal ratio. Different geometric features of both complexes are observed. In their crystal structures, 1 and 2 form infinite two‐dimensional structures and 2 forms a three‐dimensional supramolecular framework. Electron paramagnetic resonance spectra of 1 and 2 were also investigated. Moreover, thermal and electrochemical properties and antimicrobial activity of 2 were also studied. In addition, the calculated HOMO and LUMO energies show the character of complex 1.

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Salamo-type trinuclear and tetranuclear cobalt(II) complexes based on a new asymmetry Salamo-type ligand: syntheses, crystal structures, and fluorescence properties

Cited by 70 publications

References 35 publications

Tri- and Mono-Nuclear Zinc(II) Complexes Based on Half- and Mono-Salamo Chelating Ligands

Tri- and Mono-Nuclear Zinc(II) Complexes Based on Half- and Mono-Salamo Chelating Ligands

Crystal structure of bis(μ₂-acetato-κ² O:O′)-bis{μ₂-4-chloro-2-(8-(4-(diethylamino)-2-oxidophenyl)-3,6-dioxa-2,7-diazaocta-1,7-dien-1-yl)phenolato-κ⁶ O:O,N,N′,O′′:O′′}tricobalt(II), C₄₄H₄₉Cl₂Co₃N₆O₁₂

Two two‐dimensional supramolecular copper(II) and cobalt(III) complexes derived from a new quinazoline‐type ligand: Syntheses, structures, and spectral, thermal, electrochemical and antimicrobial activity studies

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Salamo-type trinuclear and tetranuclear cobalt(II) complexes based on a new asymmetry Salamo-type ligand: syntheses, crystal structures, and fluorescence properties

Cited by 70 publications

References 35 publications

Tri- and Mono-Nuclear Zinc(II) Complexes Based on Half- and Mono-Salamo Chelating Ligands

Tri- and Mono-Nuclear Zinc(II) Complexes Based on Half- and Mono-Salamo Chelating Ligands

Crystal structure of bis(μ2-acetato-κ2 O:O′)-bis{μ2-4-chloro-2-(8-(4-(diethylamino)-2-oxidophenyl)-3,6-dioxa-2,7-diazaocta-1,7-dien-1-yl)phenolato-κ6 O:O,N,N′,O′′:O′′}tricobalt(II), C44H49Cl2Co3N6O12

Two two‐dimensional supramolecular copper(II) and cobalt(III) complexes derived from a new quinazoline‐type ligand: Syntheses, structures, and spectral, thermal, electrochemical and antimicrobial activity studies

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Crystal structure of bis(μ₂-acetato-κ² O:O′)-bis{μ₂-4-chloro-2-(8-(4-(diethylamino)-2-oxidophenyl)-3,6-dioxa-2,7-diazaocta-1,7-dien-1-yl)phenolato-κ⁶ O:O,N,N′,O′′:O′′}tricobalt(II), C₄₄H₄₉Cl₂Co₃N₆O₁₂