Sequestering Hydrated Fluoride in a Three-Dimensional Non-Interpenetrated Octahedral Coordination Polymer via a Single-Crystal-to-Single-Crystal Fashion

2012 ◽  
Vol 12 (7) ◽  
pp. 3369-3373 ◽  
Author(s):  
N. N. Adarsh ◽  
Axelle Grélard ◽  
Erick J. Dufourc ◽  
Parthasarathi Dastidar
2007 ◽  
Vol 63 (11) ◽  
pp. m2726-m2726 ◽  
Author(s):  
Chang-Kun Xia ◽  
Wen Wu ◽  
Qiu-Yun Chen ◽  
Ji-Min Xie

In the title coordination polymer, [Co(C8H4O4)(C12H9N3)] n , the CoII atom exists in an octahedral coordination environment formed by four carboxylate O atoms from two benzene-1,4-dicarboxylate ligands, and two N atoms from the 2-(2-pyridyl)benzimidazole ligand. Bridging by the benzene-1,4-dicarboxylate ligand leads to a zigzag chain structure, and intermolecular N—H...O hydrogen bonds as well as π–π interactions between the pyridyl ring and the benzene ring of the 2-(2-pyridyl)benzimidazole ligand (centroid–centroid distances = 3.678 and 3.697 Å) link the chains into a three-dimensional framework.


2020 ◽  
Vol 98 (7) ◽  
pp. 365-372
Author(s):  
Matthew L. Brown ◽  
Daniel B. Leznoff

The solvothermal synthesis and characterization of a three-dimensional, interpenetrated uranyl dicyanoaurate coordination polymer, K2(UO2)2(UO2)2(Au(CN)2)2(O)2(NO3)4, from UO2(NO3)2·6H2O and KAu(CN)2 is described. The structure contains a three-dimensional (3D) lattice of planar tetranuclear uranyl–oxo–nitrate clusters connected by dicyanoaurate linkers, with the rotation of the clusters providing the increased dimensionality. The material undergoes a reversible single-crystal to single-crystal transformation on exposure to water vapour, which is taken up in the channels of the 3D system. A second uranyl dicyanoaurate coordination polymer of the form [UO2(DMSO)3(H2O)(Au(CN)2)][Au(CN)2] was structurally characterized as a linear chain of dicyanoaurate units connected by gold–gold bonds with pendant uranyl–water–DMSO adducts that are hydrogen bonded into a two-dimensional sheet. Both materials exhibit emission arising from both the uranyl moiety and the gold(I) centre and represent the first multidimensional uranyl–dicyanoaurate coordination polymers.


2005 ◽  
Vol 58 (2) ◽  
pp. 115 ◽  
Author(s):  
Chun-Long Chen ◽  
Qian Zhang ◽  
Ji-Jun Jiang ◽  
Qin Wang ◽  
Cheng-Yong Su

The reaction of AgCF3CO2 with nitrilotriacetate (NTA) yields the three-dimensional silver(i) coordination polymer {Ag3[N(CH2COO)3]}n 1 which was characterized by means of elemental analysis and IR spectroscopy as well as X-ray diffraction. The single crystal structure shows that the NTA3– anions act as unusual heptadentate 13-coordination agents and the silver(i) atoms exhibit various coordination numbers in the range 3–6.


2018 ◽  
Vol 74 (2) ◽  
pp. 218-223 ◽  
Author(s):  
Ning-Ning Ji ◽  
Zhi-Qiang Shi ◽  
Hai-Liang Hu

The design and synthesis of coordination polymers with a self-penetrating architecture has attracted much interest not only due to their interesting structures but also due to their potential applications. 5,5′-Bis(pyridin-4-yl)-2,2′-bithiophene (bpbp), as a conjugated bithiophene ligand, can exhibit trans and cis conformations and this can lead to the construction of a self-penetrating architecture. In addition, the semi-rigid ancillary ligand 4,4′-oxybis(benzoic acid) (H2oba) can adopt different coordination modes, resulting in coordination polymers with high-dimensional skeletons. A new CdII coordination polymer based on mixed ligands, namely poly[diaquapentakis[μ-5,5′-bis(pyridin-4-yl)-2,2′-bithiophene-κ2 N:N′]bis(nitrato-κ2 O,O′)tetrakis(μ3-4,4′-oxydibenzoato)-κ10 O:O,O′:O′′,O′′′;κ6 O:O′:O′′-pentacadmium(II)], [Cd5(C14H14O5)4(NO3)2(C18H12N2S2)5(H2O)2] n , (I), has been synthesized under solvothermal conditions and characterized by single-crystal X-ray diffraction, IR spectroscopy and elemental analysis. Single-crystal X-ray diffraction indicates that there are three crystallographically independent CdII cations, three bpbp ligands, two deprotonated oba2− ligands, one nitrate ligand and one coordinated water molecule in the asymmetric unit. One CdII centre is seven-coordinated, exhibiting a distorted {CdN2O5} pentagonal bipyramidal geometry, while the other two Cd centres are both six-coordinated, showing slightly distorted {CdN2O4} octahedral geometries. The most interesting feature is the co-existence of trans and cis conformations in a single net, allowing structural interpenetration via self-threading and yet the expected self-penetrating structure was obtained. Topological analysis shows that the whole three-dimensional framework can be classified as a 3-nodal (4,6,6)-c net with Schläfli symbol {613.82}2{66}, which is a new topology. Furthermore, the luminescence properties of (I) were examined in the solid state at room temperature.


2019 ◽  
Vol 75 (7) ◽  
pp. 990-995 ◽  
Author(s):  
Wenlong Lan ◽  
Zhen Zhou ◽  
Fu-Chao Jia ◽  
Xiaoyun Hao ◽  
Yong Dou ◽  
...  

A new coordination polymer (CP), namely poly[(μ-4,4′-bipyridine)(μ3-3,4′-oxydibenzoato)cobalt(II)], [Co(C14H8O5)(C10H8N2)] n or [Co(3,4′-obb)(4,4′-bipy)] n (1), was prepared by the self-assembly of Co(NO3)2·6H2O with the rarely used 3,4′-oxydibenzoic acid (3,4′-obbH2) ligand and 4,4′-bipyridine (4,4′-bipy) under solvothermal conditions, and has been structurally characterized by elemental analysis, IR spectroscopy, single-crystal X-ray crystallography and powder X-ray diffraction (PXRD). Single-crystal X-ray diffraction reveals that each CoII ion is six-coordinated by four O atoms from three 3,4′-obb2− ligands, of which two function as monodentate ligands and the other as a bidentate ligand, and by two N atoms from bridging 4,4′-bipy ligands, thereby forming a distorted octahedral CoN2O4 coordination geometry. Adjacent crystallographically equivalent CoII ions are bridged by the O atoms of 3,4′-obb2− ligands, affording an eight-membered Co2O4C2 ring which is further extended into a two-dimensional [Co(3,4′-obb)] n sheet along the ab plane via 3,4′-obb2− functioning as a bidentate bridging ligand. The planes are interlinked into a three-dimensional [Co(3,4′-obb)(4,4′-bipy)] n network by 4,4′-bipy ligands acting as pillars along the c axis. Magnetic investigations on CP 1 disclose an antiferromagnetic coupling within the dimeric Co2 unit and a metamagnetic behaviour at low temperature resulting from intermolecular π–π interactions between the parallel 4,4′-bipy ligands.


2014 ◽  
Vol 14 (11) ◽  
pp. 5585-5592 ◽  
Author(s):  
Rashmi A. Agarwal ◽  
Soumya Mukherjee ◽  
E. Carolina Sañudo ◽  
Sujit K. Ghosh ◽  
Parimal K. Bharadwaj

2013 ◽  
Vol 2013 ◽  
pp. 1-7
Author(s):  
Duraisamy Senthil Raja ◽  
Jheng-Hong Luo ◽  
Ting-Guang Chang ◽  
Sheng-Han Lo ◽  
Cheng-You Wu ◽  
...  

A new calcium coordination polymer [Ca(HL-MA)]n(H3L-MA = L-malic acid) has been solvothermally synthesized. The structure of the newly synthesized complex has been determined by single-crystal X-ray diffraction analysis and further characterized by elemental analysis, reflectance UV-Vis & IR spectra, powder X-ray diffraction (PXRD), and thermogravimetric analysis (TGA). The single crystal structure analysis showed that the complex forms three-dimensional framework. The new Ca(II) complex has displayed very high thermal stability which was inferred from TGA and PXRD results. As far as the optical property of the new complex is concerned, the complex emitted its own characteristic sensitized luminescence.


2014 ◽  
Vol 70 (7) ◽  
pp. 712-714
Author(s):  
Xiao-Min Hao ◽  
Gang Chen ◽  
Chang-Sheng Gu ◽  
Ji-Wei Liu

In the title coordination polymer, {[Cd(C6H8O4S)(C13H14N2)]·H2O}n, the CdIIatom displays a distorted octahedral coordination, formed by three carboxylate O atoms and one S atom from three different 3,3′-thiodipropionate ligands, and two N atoms from two different 4,4′-(propane-1,3-diyl)dipyridine ligands. The CdIIcentres are bridged through carboxylate O atoms of 3,3′-thiodipropionate ligands and through N atoms of 4,4′-(propane-1,3-diyl)dipyridine ligands to form two different one-dimensional chains, which intersect to form a two-dimensional layer. These two-dimensional layers are linked by S atoms of 3,3′-thiodipropionate ligands from adjacent layers to form a three-dimensional network.


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