Synthesis, crystal structures and fluorescence properties of two new di- and polynuclear Cd(II) complexes with N2O donor set of a tridentate Schiff base ligand

Basak, Subhra; Sen, Soma; Marschner, Christoph; Baumgartner, Judith; Batten, Stuart Robert; Turner, David R.; Mitra, Samiran

doi:10.1016/j.poly.2007.12.005

Cited by 81 publications

(30 citation statements)

References 27 publications

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“…The strong emission at short wavelength of 1 may be due to the symmetry decrease and the conformational rigidity enhancement of the coordination polymer compared with the free bbi ligand, thereby reducing the loss of energy via non-radiative decay of the intra-ligand excited states. [31][32][33] These results reveal that complex 1 may be excellent candidate for potential photoluminescent material.…”

Section: 17mentioning

confidence: 78%

Synthesis, Crystal Structure and Luminescent Property of A Novel Cd(II) Coordination Polymer with Bis-imidazole Ligand

Zhou¹

2013

Bulletin of the Korean Chemical Society

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Research related to metal-organic coordination polymers has been a subject of great interest, not only from the view of potential applications, but also because of their intriguing architectures and framework topologies.1-3 The key to the successful design of metal-organic coordination polymers is the judicious selection of organic ligand.4 Recently, polydentate aromatic nitrogen heterocyclic ligands with fivemembered rings have been well-studied in the construction of supramolecular structure for their N-coordinated sites apt to coordinating to transition metals. Similar to six-membered N-heterocyclic ligands, the azole-based five-membered N-heterocyclic ligands, such as imidazoles, triazoles and tetrazoles have been extensively employed in the construction of various coordination polymers with diverse topologies and interesting properties.5-15 The bis(azole) ligands in which N-donor azole rings (imidazole, triazole, or tetrazole) are separated by alkyl, (CH 2 ) n , spacers are good choices for flexible bridging ligands. The conformational flexibility of the spacers makes the ligands adaptable to various coordination networks with one-, two-, and three dimensional structures. There are an increasing number of recently characterized, interesting frameworks incorporating flexible bridging ligands and metal ions have been reported. 16,17

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Section: 17mentioning

confidence: 78%

Synthesis, Crystal Structure and Luminescent Property of A Novel Cd(II) Coordination Polymer with Bis-imidazole Ligand

Zhou¹

2013

Bulletin of the Korean Chemical Society

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“…5a, PMP also exhibits a broad emission band maximum at 437 nm upon excitation at 356 nm. Since Cd(II) ion possesses stable d 10 configuration, difficult to oxide or reduce [6,40], so the emission of cadmium complexes could not originate from metal-centered MLCT excited state, but probably from ligand-centered (LLCT or LMCT), which is a commonly encountered feature within d 10 -metal coordination polymers [4,7,41]. Furthermore, the emission and excitation spectral shape of ligand and 1 are very alike, thus the photoluminescent mechanism can be tentatively assigned to the ligand-to-ligand transitions [2,6,42,43], which can be further proved by UV-vis spectra.…”

Section: Photoluminescence Propertiesmentioning

confidence: 99%

“…The design and construction of coordination polymers by self-assembly process have been a flourishing field of research not only for their intriguing topological networks but also for their potential applications as functional materials [1][2][3][4][5][6][7][8][9][10][11][12]. Owing to interest in applications such as biological imaging, photochemical catalysis, light-driven fuel production, highly efficient luminescent devices, and luminescent chemosensors, the luminescent complexes have recently attracted much attention [13,14].…”

Section: Introductionmentioning

confidence: 99%

“…Owing to interest in applications such as biological imaging, photochemical catalysis, light-driven fuel production, highly efficient luminescent devices, and luminescent chemosensors, the luminescent complexes have recently attracted much attention [13,14]. Many researches on cadmium complexes [7,[15][16][17][18][19][20] showed that Cd(II) complexes may be severed as luminescent materials, because Cd(II) has d 10 electronic configuration and large radius, can adopt various geometries and coordination numbers, and enhance/develop luminescence intensity upon coordination with conjugated p systems containing aromatic rings [4][5][6]21]. On the other hand, the derivatives of pyrazolone and their metal complexes have been widely studied [22][23][24][25][26][27][28] for their biological and pharmacological activities and potential applications [29,30].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis, crystal structure, and properties of a three-dimensional coordination polymer [Cd(PMP)2] n

Shuan

et al. 2010

Struct Chem

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A new Cd(II) coordination polymer, [Cd(PMP) 2 ] n (1) [PMP = 1-phenyl-3-methyl-5-pyrazolone], has been synthesized by the reaction of Cd(CH 3 COO) 2 Á2H 2 O with PMP and characterized by elemental analysis, IR spectrum, fluorescence spectrum, UV-vis spectrum, TG-DTA, and electrochemical analysis. Single crystal X-ray diffraction reveals that the complex has a three-dimensional network. Each PMP acts as bidentate bridging ligand and each Cd(II) center is surrounded by two O atoms and two N atoms from four different PMP ligands to form distorted tetrahedral coordination geometry. The photoluminescence study shows the complex exhibited strong solid state blue fluorescent emission at room temperature, and the TG-DTA analysis demonstrated that it has highly thermal stability. Furthermore, the electrochemical property of the complex has been investigated for the first time in DMF by cyclic voltammetry, and the results showed that it has an irreversible process.

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“…3 Preparation of one-, two-or three-dimensional polymeric network by suitable metal and ligand coordination is the special area of current research because of their interesting properties, such as electrical conductivity, magnetism, host-guest chemistry, molecular separation, gas storage, sensors and catalysis. 4 Among the various transition and non-transition metal atoms cadmium is an extremely toxic element that is naturally present in the environment and also as a result of human activities.…”

Section: Introductionmentioning

confidence: 99%

A Rarely Seen Phenolato and Azido-Bridged Polymeric Cadmium(II) Complex Derived from 2-Bromo-6-[(2-isopropylaminoethylimino)methyl]phenol

Cheng¹,

Xue

Zhang³

2017

ACSi

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A rarely seen phenolato and azido-bridged polymeric cadmium(II) complex derived from the Schiff base ligand 2-bromo-6-[(2-isopropylaminoethylimino)methyl]phenol (HL) has been prepared and characterized by elemental analysis, IR spectroscopy, and single crystal X-ray diffraction. The Schiff base ligand coordinates to the Cd atom through the NNO donor set. The Cd atom is hexa-coordinated in an octahedral geometry. Adjacent two Cd atoms are bridged by two phenolato groups generating a dimer with Cd···Cd distance of 3.475(1) Å. The dimers are further linked via azido bridges forming 2D sheets parallel to the bc plane.

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Synthesis, crystal structures and fluorescence properties of two new di- and polynuclear Cd(II) complexes with N2O donor set of a tridentate Schiff base ligand

Cited by 81 publications

References 27 publications

Synthesis, Crystal Structure and Luminescent Property of A Novel Cd(II) Coordination Polymer with Bis-imidazole Ligand

Synthesis, Crystal Structure and Luminescent Property of A Novel Cd(II) Coordination Polymer with Bis-imidazole Ligand

Synthesis, crystal structure, and properties of a three-dimensional coordination polymer [Cd(PMP)2] n

A Rarely Seen Phenolato and Azido-Bridged Polymeric Cadmium(II) Complex Derived from 2-Bromo-6-[(2-isopropylaminoethylimino)methyl]phenol

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