Journal ArticleDOI
A zinc(II) coordination polymer, [Zn4( o -bda)4( p -pbim)4] n , with strong blue fluorescence
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TLDR
A zinc(II) coordination polymer, Zn4(o-bda)4(p-pbim)4] n (1) as mentioned in this paper, has been synthesized by hydrothermal method and characterized by elemental analysis, IR, TG, photoluminescence and X-ray single crystal diffraction.Abstract:
A zinc(II) coordination polymer, [Zn4(o-bda)4(p-pbim)4] n (1) (p-pbim = 4-pyridylbenzimidazole, o-bda2− = o-phenylenediacetic acid dianion), has been synthesized by hydrothermal method and characterized by elemental analysis, IR, TG, photoluminescence and X-ray single crystal diffraction. Complex 1 crystallizes in a monoclinic system and space group P21 /n, with a = 14.231(3) A, b = 16.257(4) A, c = 16.794(4) A, β = 100.262(1)°, and Z = 8; R 1 for 6475 observed reflections [I > 2σ(I)] was 0.0420. Complex 1 shows a bi-chain structure fabricated by the tetranuclear zinc unit. Two zinc(II) ions are five coordinate with distorted trigonal-bipyramid geometry; the other two zinc(II) ions are four coordinate with distorted tetrahedral geometry. Complex 1 builds the 1-D bi-chain structure with two different subrings A and B, which are 32-member and 14-member rings, respectively. There exists a 2-D supramolecular network linked by hydrogen-bonding interactions (2.695 and 2.807 A). A 3-D supramolecular network is f...read more
Citations
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Zinc paddlewheel dimers containing a strong π···π stacking supramolecular synthon: designed single-crystal to single-crystal phase changes and gas/solid guest exchange.
TL;DR: The ligand 4-(1,8-naphthalimido)benzoate, L(C4)(-) contains the "paddlewheel" Zn(2)(O(2)CR)(4) secondary building unit (SBU) that organizes the rigid phenylene and naphthalIMide rings of the carboxylate ligands in a square arrangement.
Journal ArticleDOI
Syntheses, crystal structures and luminescent properties of three metal coordination polymers based on aromatic carboxylic acids and 2-(pyridine-4-yl)-(1H)-benzoimidazole
TL;DR: In this paper, three metal coordination complexes were obtained under hydrothermal conditions by reacting cobalt and cadmium salts with 4PBI and IPA or TPA, and they were characterized by X-ray single-crystal diffraction, EA, IR and PXRD.
Journal ArticleDOI
Synthesis, crystal structure, and fluorescence of a 2-D coordination polymer
TL;DR: A 2D coordination polymer with mixed ligands, [Zn2(BDC)(4,4′-bipy) (HCOO)2] (1) (BDC, 1,4-benzenedicarboxylate; 4, 4′-βipy, 4,4''bipyridine), has been synthesized by solvothermal reaction as mentioned in this paper.
Journal ArticleDOI
Syntheses, structures, and luminescent properties of Zn(II) and Cd(II) complexes: 3-D supramolecules based on 2,6-bis(imino)pyridine ligands constructed by hydrogen bonding interactions
TL;DR: In this paper, the structure of 6 5-coordinate 2,6-bis(imino)pyridine metal complexes, [2,6-(ArN=CMe)2C5H3NMCl2 · nCH3CN] were determined by single-crystal X-ray diffraction.
Journal ArticleDOI
Syntheses, crystal structures, properties of metal coordination polymers based on a novel semi-rigid aromatic carboxylate ligand
TL;DR: A set of new metal coordination polymers constructed from a novel semi-rigid aromatic carboxylate ligand, namely, [M(L)(4PBI)(H2O)]n (M = Ni, Co and Cu for 1, 2 and 3, respectively), have been synthesized by the hydrothermal reaction.
References
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Journal ArticleDOI
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K. Das,Nilmoni Sarkar,Ajit Kumar Ghosh,Devashis Majumdar,Debnarayan Nath,Kankan Bhattacharyya +5 more
TL;DR: In this paper, a steady-state and time-resolved emission spectroscopy at various temperatures and by semi-empirical quantum chemical methods has been used to study an excited-state intramolecular proton transfer (ESIPT) process in 2-(2'-hydroxyphenyl) benzimidazole and -benzoxazole (HPBI and HBO, respectively).
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Phosphorescent Cu(I) Complexes of 2-(2‘-pyridylbenzimidazolyl)benzene: Impact of Phosphine Ancillary Ligands on Electronic and Photophysical Properties of the Cu(I) Complexes
TL;DR: The electronic and photophysical properties of the new mononuclear Cu(I) complexes were examined by using UV-vis, fluorescence, and phosphorescence spectroscopies and electrochemical analysis, finding that all four complexes display a weak MLCT absorption band that varies considerably with the phosphine ligand.
Journal ArticleDOI
Crystal structure and spectroscopic study of novel two- and three-dimensional photoluminescent Eu(III)-adipate compounds.
TL;DR: Two new photoluminescent compounds with the formulas of Eu(III) chloride and adipic acid under hydrothermal reaction conditions in aqueous solution showed strong red luminescence upon excitation, and their luminescent decay involves the multiphonon relaxation mechanism.