Phosphorescence emission and fine structures observed respectively under ambient conditions and at ca. 55 K in a coordination polymer of lead(ii)-thiophenedicarboxylate

2018 ◽  
Vol 47 (28) ◽  
pp. 9334-9340 ◽  
Author(s):  
Jin-Yu He ◽  
Zheng-Rong Deng ◽  
Xiao Liu ◽  
Yin Qian ◽  
Yang Zou ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Ambient Conditions ◽  
Phosphorescence Emission ◽  
Fine Structures ◽  
Solvothermal Conditions

Under solvothermal conditions, a robust Pb2+-based coordination polymer (CP), [Pb(TDC)]n (1), where H2TDC is thiophenedicarboxylic acid, has been achieved.

scholarly journals Intense greenish phosphorescence emission under ambient conditions in a two-dimensional lead(ii) coordination polymer with a 1,1′-ethynebenzene-3,3′,5,5′-tetracarboxylate ligand

2017 ◽  
Vol 46 (24) ◽  
pp. 7953-7959 ◽  
Author(s):  
Xiao Liu ◽  
Lu Zhai ◽  
Wen-Wei Zhang ◽  
Jin-Lin Zuo ◽  
Zhu-Xi Yang ◽  
...  
Keyword(s):  
Solid State ◽  
Quantum Yield ◽  
Coordination Polymer ◽  
Two Dimensional ◽  
Ambient Conditions ◽  
Phosphorescence Lifetime ◽  
Phosphorescence Emission

A new 2D Pb2+-based coordination polymer emits intense greenish phosphorescence in the solid state under ambient conditions with a quantum yield of 1.5% and a phosphorescence lifetime of 4.17 ms.

A new two-dimensional managnese(II) coordination polymer constructed by 2,2′-(1,2-phenylene)bis(1H-imidazole-4,5-dicarboxylate)

2018 ◽  
Vol 74 (5) ◽  
pp. 599-603 ◽  
Author(s):  
Yan-Ju Liu ◽  
Di Cheng ◽  
Ya-Xue Li ◽  
Xiang-Ru Meng ◽  
Huai-Xia Yang
Keyword(s):  
Solid State ◽  
Coordination Polymer ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Coordination Geometry ◽  
Two Dimensional ◽  
Carboxylate Ligands ◽  
Rich Variety ◽  
Distorted Octahedral ◽  
Solvothermal Conditions

In recent years, N-heterocyclic carboxylate ligands have attracted much interest in the preparation of new coordination polymers since they contain N-atom donors, as well as O-atom donors, and have a rich variety of coordination modes which can lead to polymers with intriguing structures and interesting properties. A new two-dimensional coordination polymer, namely poly[[μ3-2,2′-(1,2-phenylene)bis(4-carboxy-1H-imidazole-5-carboxylato)-κ6 O 4,N 3,N 3′,O 4′:O 5:O 5′]manganese(II)], [Mn(C16H8N4O8)] n or [Mn(H4Phbidc)] n , has been synthesized by the reaction of Mn(OAc)2·4H2O (OAc is acetate) with 2,2′-(1,2-phenylene)bis(1H-imidazole-4,5-dicarboxylic acid) (H6Phbidc) under solvothermal conditions. In the polymer, each MnII ion is six-coordinated by two N atoms from one H4Phbidc2− ligand and by four O atoms from three H4Phbidc2− ligands, forming a significantly distorted octahedral MnN2O4 coordination geometry. The MnII ions are linked by hexadentate H4Phbidc2− ligands, leading to a two-dimensional structure parallel to the ac plane. In the crystal, adjacent layers are further connected by N—H...O hydrogen bonds, forming a three-dimensional structure in the solid state.

scholarly journals A new Pb(II)-based coordination polymer constructed from a semirigid tricarboxylate ligand: crystal structure and anti-lung cancer activity

2019 ◽  
Vol 42 (1) ◽  
pp. 8-12
Author(s):  
Kun-Ning Yang ◽  
Ke-De Yuan ◽  
Li-Li Jiang ◽  
Yong Zhang
Keyword(s):  
Lung Cancer ◽  
Coordination Polymer ◽  
Ultrasonic Method ◽  
Three Dimensional ◽  
Human Lung Cancer ◽  
X Ray Diffraction ◽  
Dioic Acid ◽  
X Ray ◽  
The One ◽  
Solvothermal Conditions

Abstract Based on a semirigid tricarboxylate ligand 5-((4-carboxyphenoxy)methyl)benzene-1,3-dioic acid (H3L), a new Pb(II)-based coordination polymer formulated as [Pb(HL)(H2O)](H2O) (1) was synthesized under solvothermal conditions and characterized by single-crystal X-ray structural analysis, power X-ray diffraction, and elemental analysis. Compound 1 is a two-dimensional layered structure formed by the connection of the one-dimensional Pb(II)-based secondary building unit chains with the partly deprotonated HL ligands, which are further extended into three-dimensional supermolecular structures through the H-bonds. Furthermore, the size of the as-prepared 1 could be downsized into the nano region through a simple ultrasonic method. Finally, the antilung cancer activities of 1 and the nanosized 1 have been probed via the MTT assay against three human lung cancer cell lines (A549, H1299, and PC9).

A Co(ii) 1D coordination polymer constructed from 1,3-bisbenzyl-2-oxoimidazoline-4,5-dicarboxylic acid: crystal structure and magnetic properties

2018 ◽  
Vol 42 (2) ◽  
pp. 1216-1222 ◽  
Author(s):  
Felipe Mageste Scaldini ◽  
Maria Clara Ramalho Freitas ◽  
Mario De Souza Reis ◽  
Maria Irene Yoshida ◽  
Klaus Krambrock ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Coordination Polymer ◽  
Dicarboxylic Acid ◽  
Metal Ion ◽  
Acid Crystal ◽  
1D Coordination Polymer ◽  
Solvothermal Conditions

A new complex involving 1,3-bisbenzyl-2-oxoimidazoline-4,5-dicarboxylic acid (H2L) and a cobalt(ii) metal ion designated [Co(L)(H2O)2]n has been synthesized under solvothermal conditions and characterized.

A novel (3,6)-connected CdII coordination polymer based on an ether-linked tricarboxylate ligand: synthesis, topology and luminescence sensing properties in aqueous solution

2019 ◽  
Vol 75 (12) ◽  
pp. 1666-1674
Author(s):  
Yu'e Yu ◽  
Yuqian Chen ◽  
Xiuna Mi ◽  
Suna Wang ◽  
Jing Lu
Keyword(s):  
Aqueous Solution ◽  
Coordination Polymer ◽  
Three Dimensional ◽  
Isophthalic Acid ◽  
Water Stability ◽  
Two Dimensional ◽  
Carboxylate Ligands ◽  
Strong Luminescence ◽  
Solvothermal Conditions ◽  
Dimensional Wave

A novel three-dimensional coordination polymer, namely, poly[[diaquabis(μ-4,4′-bipyridine)bis{μ3-5-[(2-carboxyphenoxy)methyl]isophthalato}tricadmium(III)] dimethylformamide monosolvate 2.5-hydrate], {[Cd3(C16H9O7)2(C10H8N2)2(H2O)2]·2C3H7NO·5H2O} n , was obtained by the reaction of ether-linked 5-[(2-carboxyphenoxy)methyl]isophthalic acid (H3 L) with CdII salts in the presence of 4,4′-bipyridine (bpy) under solvothermal conditions. In this complex, the CdII centres are connected by the carboxylate ligands to form two-dimensional wave-like layers, which are pillared by bpy ligands and extended into a rare three-dimensional (3,6)-connected sqc27 framework. The complex demonstrated good water stability and strong luminescence emissions. It not only possesses excellent luminescence sensing activities toward Fe3+ and Cr2O7 2− in aqueous solution, but can also distinguish between Cr2O7 2− and CrO4 2− by luminescence. Furthermore, it could be simply and quickly regenerated at least five times. A study of the sensing mechanism indicated that luminescence quenching may be related to the energy competition between the complex and sensing analytes.

Biphase synthesis of a one-dimensional coordination polymer based on a dinuclear CdIIsecondary building unit and a novel semi-rigid dicarboxylate

2012 ◽  
Vol 68 (12) ◽  
pp. m333-m335
Author(s):  
Xiaolai Zhang ◽  
Weiyong Ying
Keyword(s):  
Coordination Polymer ◽  
Hydrogen Bonds ◽  
Single Phase ◽  
Solvothermal Method ◽  
Solvothermal Reaction ◽  
Two Dimensional ◽  
One Dimensional ◽  
Secondary Building Units ◽  
The One ◽  
Solvothermal Conditions

A one-dimensional coordination polymer, namelycatena-poly[[aquapyridinecadmium(II)]-μ3-{4,4′-[(2,4,6-trimethyl-1,3-phenylene)bis(methylene)]dibenzoato}], [Cd(C25H22O4)(C5H5N)(H2O)]n, has been synthesized by a biphasic solvothermal reaction. The CdIIcation is located in a CdO5N six-coordinated environment. Thetrans4,4′-[(2,4,6-trimethyl-1,3-phenylene)bis(methylene)]dibenzoate ligand connects the CdIIcations to form a one-dimensional ribbon incorporating centrosymmetric [Cd2(COO)2] secondary building units. Inter-ribbon O—H...O hydrogen bonds extend the one-dimensional ribbons into a two-dimensional sheet. No π–π interactions are observed. Comparing products synthesized using a different method, it was found that biphasic solvothermal conditions play a crucial role in obtaining large well-shaped single crystals; only intractable precipitates were obtained by the traditional single-phase solvothermal method.

Anisotropic compressibility of the coordination polymer emim[Mn(btc)]

2016 ◽  
Vol 72 (3) ◽  
pp. 389-394 ◽  
Author(s):  
Solveig R. Madsen ◽  
Stephen A. Moggach ◽  
Jacob Overgaard ◽  
Bo Brummerstedt Iversen
Keyword(s):  
Coordination Polymer ◽  
Unit Cell ◽  
Ambient Conditions ◽  
X Ray Diffraction ◽  
Imidazolium Cation ◽  
Carboxylate Ligands ◽  
Strain Gradients ◽  
Coordination Environment ◽  
X Ray ◽  
Hydrostatic Limit

The effect of pressure on the crystal structure of a coordination polymer, emim[MnII(btc)] (emim = 1-ethyl,3-methyl imidazolium cation, btc = 1,3,5-benzene-tricarboxylate), was investigated with single-crystal X-ray diffraction. At 4.3 GPa the unit-cell volume had decreased by 14% compared with ambient conditions. The unit-cell contraction is highly anisotropic, with thea- andb-axes decreasing by 5.5 and 9.5%, respectively, and thec-axis compressing a mere 0.25% up to 1.7 GPa followed by a 0.2% expansion between 1.7 and 4.3 GPa. The 0.2% increase in length of thec-axis in this interval happens above the quasi-hydrostatic limit of the pressure-transmitting medium and therefore it might be a consequence of strain gradients. Under ambient conditions, two MnO6units are connected by two carboxylate ligands to form dimeric units. On increasing pressure, a non-bonded O atom from a bridging carboxylate group approaches the Mn atom, with the Mn—O distance decreasing from 2.866 (1) Å at 0.3 GPa to 2.482 (6) Å at 4.3 GPa, increasing the coordination environment of the Mn ion from six- to seven-coordinated.

Synthesis and structure of a cobalt coordination polymer based on 2,8-di(pyridin-4-yl)dibenzothiophene and 4,4-dicarboxydiphenylsulfone

2016 ◽  
Vol 71 (4) ◽  
pp. 311-315
Author(s):  
Yan Jiao ◽  
Dan-Xia Zhao ◽  
Kai-Ping Yang ◽  
Xin Liu ◽  
Cheng-Yan Huang ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Semiconductor Material ◽  
Cobalt Cluster ◽  
2D Structure ◽  
Wide Gap ◽  
Cobalt Coordination ◽  
Solvothermal Conditions

AbstractA new coordination polymer {[Co2(DPDBT)2(DCPS)2(H2O)](H2O)}n (1) [DPDBT = 2,8-di(pyridin-4-yl)dibenzothiophene, H2DCPS = 4,4′-dicarboxydiphenyl sulfone], was synthesized under solvothermal conditions. Complex 1 exhibits a 2D structure with two different kinds of binuclear cobalt cluster units. The UV/Vis spectra of 1 and of the ligands were investigated, indicating that complex 1 is a potential wide gap semiconductor material.

scholarly journals Novel Cerium Bisphosphinate Coordination Polymer and Unconventional Metal–Organic Framework

Crystals ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 303 ◽  
Author(s):  
Jan Rohlíček ◽  
Daniel Bůžek ◽  
Petr Brázda ◽  
Libor Kobera ◽  
Jan Hynek ◽  
...  
Keyword(s):  
Inorganic Chemistry ◽  
Crystal Structure ◽  
Electron Diffraction ◽  
Coordination Polymer ◽  
Specific Surface ◽  
Metal Organic Framework ◽  
Diffraction Tomography ◽  
Metal Organic ◽  
Solvothermal Conditions ◽  
Organic Framework

The first Ce(III)-based coordination polymer ICR-9 (ICR stands for Inorganic Chemistry Řež), with the formula Ce2(C8H10P2O4)3, containing ditopic phenylene-1,4-bis(methylphosphinic acid) linker, was synthetized under solvothermal conditions. The crystal structure, solved using electron diffraction tomography (EDT), revealed 2D layers of octahedrally coordinated cerium atoms attached together through O-P-O bridges. The structure is nonporous, however, the modification of synthetic conditions led to unconventional metal–organic framework (or defective amorphous phase) with a specific surface area up to approximately 400 m2 g-1.

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