Luminescent Functionalised Supramolecular Coordination Polymers Based on an Aromatic Carboxylic Acid Ligand for Sensing Hg2+ Ions

2017 ◽  
Vol 70 (7) ◽  
pp. 786 ◽  
Author(s):  
Xiaojun Sun ◽  
Ping Yang ◽  
Guangfeng Hou ◽  
Jinzhi Wei ◽  
Xueliang Wang ◽  
...  
Keyword(s):  
Metal Ions ◽  
Coordination Polymers ◽  
3D Structure ◽  
Crystallographic Analysis ◽  
X Ray ◽  
Luminescent Sensors ◽  
1D Chain ◽  
Supramolecular Coordination ◽  
Supramolecular Networks ◽  
Carboxylic Acid Ligand

Two luminescent functionalised supramolecular coordination polymers, namely, [Zn(TPDC-2CH3)(H2O)2]·H2O (1) and [Cd(TPDC-2CH3)(H2O)4]·H2O (2), were successfully synthesised by the reaction of 2′,5′-dimethyl-[1,1′:4′,1″-terphenyl]-4,4″-dicarboxylic acid (H2TPDC-2CH3) with Zn2+ and Cd2+ ions, respectively. X-Ray crystallographic analysis reveals that both compounds 1 and 2 exhibit fascinating 3D supramolecular networks, in which metal ions are linked by ligands to form a 1D chain which further extends to a 3D structure through the interaction of hydrogen bonding. The use of 1 and 2 as luminescent sensors for the optical detection of metal ions: Na+, K+, Hg2+, Ag+, Ca2+, Co2+, Ni2+, Mn2+, Cu2+, Zn2+, Cd2+, Pb2+, Mg2+, Al3+, Fe3+, Fe2+, In3+, Bi3+, and Cr3+ was carried out in aqueous solution, and the results indicated that compound 1 could effectively detect Hg2+ ions among various cations at room temperature, with a detection limit of 3.6 × 10−15 M.

scholarly journals Structural Diversity of Six Coordination Polymers Based on the Designed X-Shaped Ligand 1,1,1,1-Tetrakis[(3-pyridiniourea)methyl]methane

Molecules ◽  
2018 ◽  
Vol 23 (9) ◽  
pp. 2292 ◽  
Author(s):  
Qi-Long Zhang ◽  
Qing Yu ◽  
Hai-Fang Xie ◽  
Bo Tu ◽  
Hong Xu ◽  
...  
Keyword(s):  
Metal Ions ◽  
Single Crystal ◽  
Diffraction Analysis ◽  
Coordination Polymers ◽  
Chain Complex ◽  
Structural Diversity ◽  
Structural Comparison ◽  
Single Crystal Diffraction ◽  
X Ray ◽  
Loop Chain

In this study, six coordination polymers (CPs), {[Ag2(L)(CF3SO3)]·CF3SO3·2H2O·DMF}n (1), {[Ag(L)]·SbF6·4DMF·H2O}n (2), {[Zn(L)0.5(I)2]·3.75H2O}n (3), {[Cd2(L)(I)4(H2O)(DMF)]·4H2O·3DMF}n (4), {[Hg2(L)(I)4]·H2O·4DMF}n (5) and {[Hg2(L)(Cl)4]·2H2O·3DMF}n (6), were obtained based on the designed X-shaped urea-based ligand. X-ray single crystal diffraction analysis revealed that complex 1 displayed a 3D (3,4)-connected {6·82}{64·82}-tcj net. Complex 2 featured a 2D 4-connected {43·63} sheet. Complexes 3 and 5 exhibited a 1D polymeric loop chain. Complex 4 displayed a 1D polymeric fishbone chain. Complex 6 showed a 2D 4-connected {44·62}-sql sheet. Structural comparison revealed that not only the metal ions, but also the anions played crucial roles in the control of final structures.

Metal-Controlled Assembly Tuning Coordination Polymers with Flexible 2-(1H-imidazole-1-yl)acetic Acid (Hima)

2006 ◽  
Vol 59 (9) ◽  
pp. 647 ◽  
Author(s):  
Yong-Tao Wang ◽  
Gui-Mei Tang ◽  
Da-Wei Qin
Keyword(s):  
Coordination Polymers ◽  
Weak Interactions ◽  
Critical Role ◽  
Three Dimensional ◽  
Supramolecular Network ◽  
Water Medium ◽  
New Materials ◽  
X Ray Diffraction ◽  
X Ray ◽  
Supramolecular Networks

Three new inorganic–organic coordination polymers based on a versatile linking unit 2-(1H-imidazole-1-yl)acetate (Hima) and divalent Mn(ii), Ni(ii), and Cu(ii) ions, exhibiting two kinds of two dimensionalities with different topological structures, have been prepared in water medium and structurally characterized by single-crystal X-ray diffraction analysis. Reaction of MnCl2·4H2O and Ni(NO3)2·6H2O with Hima yielded neutral two-dimensional (2D) coordination polymers [M(ima)2]n, M = Mn(ii) 1, and Ni(ii) 2 with isostructural 2D coordination polymers possessing (3,6) topology structures, which further stack into three-dimensional (3D) supramolecular networks through C–H···O weak interactions. However, when Cu(NO3)2·4H2O was used, a neutral 2D coordination polymer [Cu(ima)2]n 3 consisting of rhombus units was generated, which showed a 3D supramolecular network through C–H···O weak interactions. Among these polymers, the building block ima anion exhibits different coordination modes. These results indicate that the versatile nature of this flexible ligand, together with the coordination preferences of the metal ions, plays a critical role in construction of these novel coordination polymers. Spectral and thermal properties of these new materials have also been investigated.

Assembly of Three Lanthanide Coordination Polymers from 2-(4-Carboxybenzyloxy) Benzoic Acid Ligand: Synthesis, Structure, and Fluorescent Properties

2020 ◽  
Vol 73 (1) ◽  
pp. 16
Author(s):  
Shu-Ju Wang ◽  
Yi-Hui Jiang ◽  
Han-Lin Wu ◽  
Li-Xin You ◽  
Gang Xiong ◽  
...  
Keyword(s):  
Benzoic Acid ◽  
Single Crystal ◽  
Coordination Polymers ◽  
Lanthanide Ions ◽  
Solvothermal Reaction ◽  
X Ray Diffraction ◽  
Fluorescent Properties ◽  
Single Crystal Diffraction ◽  
X Ray ◽  
1D Chain

Three new coordination polymers, {[Ln(cbb)(Hcbb)(DMF)·H2O]n, Ln=Sm (1), Eu (2), Tb(3), H2cbb=2-(4-carboxybenzyloxy) benzoic acid, DMF=N,N-dimethylformamide}, have been synthesised by a solvothermal reaction and structurally characterised by infrared spectroscopy, elemental analysis, thermogravimetry analysis, and X-ray single-crystal diffraction. The results of single-crystal X-ray diffraction indicate that the coordination polymers 1–3 are isostructural, belong to a triclinic system, space group P-1, and show 1D chain structures through the H2cbb ligands connecting adjacent lanthanide ions. In addition, the fluorescence properties of polymers 1–3 were also investigated.

New homodinuclear tris(3-alkylpyrazolyl)borate complexes of CoIIand NiIIwith a tetraacetylethane dianion as a bridging ligand

2016 ◽  
Vol 72 (11) ◽  
pp. 777-785
Author(s):  
Elena A. Mikhalyova ◽  
Swiatoslaw Trofimenko ◽  
Matthias Zeller ◽  
Anthony W. Addison ◽  
Vitaly V. Pavlishchuk
Keyword(s):  
Metal Ions ◽  
Coordination Polymers ◽  
Metal Ion ◽  
Molecular Structures ◽  
Polynuclear Complexes ◽  
X Ray ◽  
X Ray Crystallography ◽  
Coordination Sites ◽  
Borate Complexes ◽  
Capping Ligands

Polynuclear complexes and coordination polymers of 3dmetals have attracted significant interest evoked by a number of their unique properties. One of the most common approaches to the directed synthesis of coordination polymers is the linking of pre-prepared discrete coordination units by polydentate ligands. The formation of polynuclear complexes is usually a spontaneous process and precise prediction of the products of such reactions is virtually impossible in most cases. Tris(pyrazolyl)borates (Tp) act as tripodal `capping' ligands which form stable complexes with 3dmetal ions. In such 1:1 compounds, three metal-ion coordination sites are occupied by N atoms from a Tp anion. This limits the number of remaining coordination sites, and thus the number of additional ligands which may coordinate, and opens an attractive approach for the directed design of desirable structures by exploiting ligands with appropriate composition and topology. In the present study, Tp anions with neopentyl [TpNp, tris(3-neopentylpyrazolyl)borate] and cyclohexyl [TpCy, tris(3-cyclohexylpyrazolyl)borate] substituents were used as `capping' ligands and the dianion of tetraacetylethane (3,4-diacetylhexa-2,4-diene-2,5-diolate, tae2−) was employed as a bridge. The dinuclear complexes (μ-3,4-diacetylhexa-2,4-diene-2,5-diolato-κ4O2,O3:O4,O5)bis{[tris(3-cyclohexyl-1H-pyrazol-1-yl-κN2)borato]cobalt(II)} acetonitrile disolvate, [Co2(C27H40BN6)2(C10H12O4)]·2CH3CN, (I)·2CH3CN, and (μ-3,4-diacetylhexa-2,4-diene-2,5-diolato-κ4O2,O3:O4,O5)bis{[tris(3-neopentyl-1H-pyrazol-1-yl-κN2)borato]nickel(II)}, [Ni2(C24H40BN6)2(C10H12O4)], (II), were synthesized by the reaction of the mononuclear complexes TpCyCoCl or TpNpNiCl with H2tae (3,4-diacetylhexane-2,5-dione or tetraacetylethane) in the presence of NEt3as base. Compounds (I) and (II) were characterized by mass spectrometry, elemental analysis, and X-ray crystallography. They possess similar molecular structures, X-ray diffraction revealing them to be dinuclear in nature and composed of discrete Tp–Munits in which two metal ions are linked by a tae2−dianion. Each metal ion possesses a five-coordinate square-pyramidal environment. The interplanar angles between the acetylacetonate fragments are significantly smaller than the near-90° values commonly observed.

New coordination polymers of glyoxal bis(2-hydroxyanil)

1995 ◽  
Vol 7 (4) ◽  
pp. 433-441 ◽  
Author(s):  
Salah A EI-Shatoury
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Metal Ions ◽  
Coordination Polymers ◽  
Elemental Analysis ◽  
Electronic Spectra ◽  
Metal Content ◽  
X Ray ◽  
Dsc Analyses ◽  
Scanning Electron

Coordination polymers of [2,2'-(ethandiylidenedinitrilo) diphenol) have been prepared with the metal ions Cu(II), Ni(1I) and Cr(III). They were characterized by elemental analysis, IR and electronic spectra. The metal content in all polymers was found to be consistent with a 1:1 (metal:ligand) stoichiometry. The thermal behaviour of these coordination polymers has been studied by thermogravimetric and DSC analyses in air up to 500 C. The crystallinity of the formed polymers was determined by x-ray analysis. The morphological structures of these polymers were determined by scanning electron microscopy.

scholarly journals High Efficiency Electrochemiluminescence for Copper(II) and Cadmium(II) Pyrazolate Polymers

2021 ◽  
Author(s):  
Feng-Zhen Hua ◽  
Chao Feng ◽  
Wei-Nan Xie ◽  
Yi-Ni Luo ◽  
Ling-Mei Zhang ◽  
...  
Keyword(s):  
High Efficiency ◽  
Solvothermal Method ◽  
Hirshfeld Surface ◽  
X Ray Diffraction ◽  
Metal Centers ◽  
X Ray ◽  
Weak Intermolecular Interactions ◽  
1D Chain ◽  
Ft Ir ◽  
Supramolecular Networks

Abstract Two new coordination polymers, namely, [Cu2(L)2(4,4′-bpy)]n (1) and [Cd(HL)Cl(1,10′-phen)]n (2) (H2L = 1H-pyrazole-3-carboxylic acid, 4,4′-bpy = 4,4′-bipyridine, 1,10′-phen = 1,10-phenanthroline) have been synthesized via solvothermal method and were structurally characterized by single-crystal X-ray diffraction, FT-IR, elemental analysis and PXRD. The two complexes are both infinite 1D chain structures, in complex 1 the H2L ligands are completely deprotonated and chelating the metal centers, while in complex 2, H2L ligands play a role in chelating-bridging the metal centers. What’s more, the two complexes further extended to 3D supramolecular networks by hydrogen bonds and weak C–H⋯π interactions. The weak intermolecular interactions existed in the complexes structures were further studied by Hirshfeld surface analysis and 2D fingerprint plots. In addition, these two transition mental complexes exhibit high intense electrochemiluminescence (ECL) in N,N-dimethylformamide (DMF) and after ten circulations the ECL intensity still remains stable, which can be a useful guide for the construct of new polymers ECL materials.

scholarly journals Synthesis, Crystal Structure, and Luminescence of Cadmium(II) and Silver(I) Coordination Polymers Based on 1,3-Bis(1,2,4-triazol-1-yl)adamantane

Molecules ◽  
2021 ◽  
Vol 26 (17) ◽  
pp. 5400
Author(s):  
Roman D. Marchenko ◽  
Taisiya S. Sukhikh ◽  
Alexey A. Ryadun ◽  
Andrei S. Potapov
Keyword(s):  
Crystal Structure ◽  
Coordination Polymer ◽  
Metal Ions ◽  
Single Crystal ◽  
Diffraction Analysis ◽  
Coordination Polymers ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
One Dimensional ◽  
X Ray

Coordination polymers with a new rigid ligand 1,3-bis(1,2,4-triazol-1-yl)adamantane (L) were prepared by its reaction with cadmium(II) or silver(I) nitrates. Crystal structure of the coordination polymers was determined using single-crystal X-ray diffraction analysis. Silver formed two-dimensional coordination polymer [Ag(L)NO3]n, in which metal ions are linked by 1,3-bis(1,2,4-triazol-1-yl)adamantane ligands, coordinated by nitrogen atoms at positions 2 and 4 of 1,2,4-triazole rings. Layers of the coordination polymer consist of rare 18- and 30-membered {Ag2L2} and {Ag4L4} metallocycles. Cadmium(II) nitrate formed two kinds of one-dimensional coordination polymers depending on the metal-to-ligand ratio used in the synthesis. Coordination polymer [Cd(L)2(NO3)2]n was obtained in case of a 1:2 M:L ratio, while for M:L = 2:1 product {[Cd(L)(NO3)2(CH3OH)]·0.5CH3OH}n was isolated. All coordination polymers demonstrated ligand-centered emission near 450 nm upon excitation at 370 nm.

scholarly journals Three New Supramolecular Coordination Polymers Based on 1H-pyrazolo[3,4-b]pyridin-3-amine and 1,3-benzenedicarboxylate Derivatives

Polymers ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 819 ◽  
Author(s):  
Yun Xu ◽  
Qing-Hua Deng ◽  
Fang Ding ◽  
Ran An ◽  
Dong Liu ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Coordination Polymers ◽  
Supramolecular Network ◽  
Photoluminescence Properties ◽  
X Ray Diffraction ◽  
X Ray ◽  
Hydrogen Bonding Interactions ◽  
Sheet Structure ◽  
Supramolecular Coordination ◽  
Solvothermal Conditions

Three new supramolecular coordination polymers, namely [Zn(1,3-BDC)(HL)]n (Polymer 1), [Zn3(1,3,5-BTC)2(HL)2(H2O)2]n (Polymer 2), and [Zn9(5-SO3-1,3-BDC)2(L)8(OH)4]n (Polymer 3), were synthesized under solvothermal conditions, based on 1H-pyrazolo[3,4-b]pyridin-3-amine (HL) along with 1,3-benzenedicarboxylate (1,3-BDC) and its derivatives, such as 1,3,5-benzenetricarboxylate (1,3,5-BTC) and 5-sulfo-1,3-benzenedicarboxylate (5-SO3-1,3-BDC). Polymers 1–3 were characterized by elemental analysis, IR spectroscopy, powder X-ray diffraction (PXRD), and single crystal X-ray diffraction analysis. Polymer 1 exhibited a two-dimensional (2D) 4-connected sql net. The neighboring 2D nets were further linked into a 3D supramolecular network by hydrogen-bonding interactions. Polymer 2 displayed a 3D (4, 4, 4)-connected network, which was further stabilized by R 2 2 (14) and S(9) hydrogen-bonding rings along with π–π interactions. The 2D sheet structure of Polymer 3 was constructed by novel quasi-linear nonanuclear Zn(II) units, which further extended into a 3D supramolecular structure by hydrogen-bonding interactions. The solid-state photoluminescence properties of Polymers 1–3 were also investigated.

Synthesis of coordination polymers with d10 metal ions and a new linear ligand: X-ray structural and luminescence studies

Polyhedron ◽  
2013 ◽  
Vol 52 ◽  
pp. 1145-1152 ◽  
Author(s):  
Musheer Ahmad ◽  
Parimal K. Bharadwaj
Keyword(s):  
Metal Ions ◽  
Coordination Polymers ◽  
X Ray ◽  
D10 Metal
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