scholarly journals Bringing a New Flexible Mercaptoacetic Acid Linker to the Design of Coordination Polymers

Polymers ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1329
Author(s):  
Agnieszka Ostasz ◽  
Alexander M. Kirillov
Keyword(s):  
Coordination Polymers ◽  
Topological Analysis ◽  
Topological Type ◽  
Polycrystalline Sample ◽  
Synthetic Methods ◽  
Mercaptoacetic Acid ◽  
X Ray Diffraction ◽  
X Ray ◽  
Metal Organic ◽  
Opening Up

Two new 3D coordination polymers (CPs), formulated as [Zn(p-XBT)]n (1H) and [Cd(p-XBT)]n (2H), were assembled from a virtually unexplored p-xylylene-bis(2-mercaptoacetic) acid linker (p-XBTA) and characterized by infrared spectroscopy (FTIR), powder X-ray diffraction (PXRD), thermal analysis methods (TG-DSC, TG-FTIR), single-crystal X-ray diffraction, and topological analysis. Two different synthetic strategies were explored, namely the precipitation (P) and hydrothermal (H) methods, resulting in a Zn(II) derivative [Zn(p-XBT)·H2O]n (1P) and its dehydrated analogue [Zn(p-XBT)]n (1H), respectively. In the Cd(II)-containing system, the same [Cd(p-XBT)]n (2P = 2H) products were generated by both synthetic methods. Upon dehydration, 1P undergoes a “crystal-to-crystal” phase transition in the 170−185 °C temperature range, producing an anhydrous polycrystalline sample (1H). Both CPs 1H and 2H are isostructural and feature polymeric 3D metal-organic nets of the cds topological type, which are driven by the 4-linked metal and p-XBT2− nodes. These compounds represent unique examples of coordination polymers derived from p-xylylene-bis(2-mercaptoacetic) acid, thus opening up the use of this flexible S,O-heterodonor building block in the design of polymeric metal-organic architectures.

scholarly journals Metal(II) Coordination Polymers from Tetracarboxylate Linkers: Synthesis, Structures, and Catalytic Cyanosilylation of Benzaldehydes

Catalysts ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 204
Author(s):  
Yu Li ◽  
Chumin Liang ◽  
Xunzhong Zou ◽  
Jinzhong Gu ◽  
Marina V. Kirillova ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Polycarboxylic Acid ◽  
X Ray Diffraction ◽  
X Ray ◽  
Trimethylsilyl Cyanide ◽  
Effect Of Solvent ◽  
Highly Active ◽  
Solvent Type ◽  
Metal Organic ◽  
Chloride Salts

Three 2D coordination polymers, [Cu2(µ4-dpa)(bipy)2(H2O)]n∙6nH2O (1), [Mn2(µ6-dpa)(bipy)2]n (2), and [Zn2(µ4-dpa)(bipy)2(H2O)2]n·2nH2O (3), were prepared by a hydrothermal method using metal(II) chloride salts, 3-(2′,4′-dicarboxylphenoxy)phthalic acid (H4dpa) as a linker, as well as 2,2′-bipyridine (bipy) as a crystallization mediator. Compounds 1–3 were obtained as crystalline solids and fully characterized. The structures of 1–3 were established by single-crystal X-ray diffraction, revealing 2D metal-organic networks of sql, 3,6L66, and hcb topological types. Thermal stability and catalytic behavior of 1–3 were also studied. In particular, zinc(II) coordination polymer 3 functions as a highly active and recoverable heterogeneous catalyst in the mild cyanosilylation of benzaldehydes with trimethylsilyl cyanide to give cyanohydrin derivatives. The influence of various parameters was investigated, including a time of reaction, a loading of catalyst and its recycling, an effect of solvent type, and a substrate scope. As a result, up to 93% product yields were attained in a catalyst recoverable and reusable system when exploring 4-nitrobenzaldehyde as a model substrate. This study contributes to widening the types of multifunctional polycarboxylic acid linkers for the design of novel coordination polymers with notable applications in heterogeneous catalysis.

A zinc(II) metal–organic framework with a novel topology formed from 4,4′,4′′-nitrilotribenzoate and 4,4′-bipyridine ligands

2015 ◽  
Vol 71 (9) ◽  
pp. 799-803 ◽  
Author(s):  
Meng Zhao ◽  
Jian Su ◽  
Jun Zhang ◽  
Jie-Ying Wu ◽  
Yu-Peng Tian
Keyword(s):  
Single Crystal ◽  
Diffraction Analysis ◽  
Solvothermal Method ◽  
Metal Organic Framework ◽  
Topological Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Paddle Wheel ◽  
Metal Organic ◽  
Organic Framework

A metal–organic framework with a novel topology, poly[sesqui(μ2-4,4′-bipyridine)bis(dimethylformamide)bis(μ4-4,4′,4′′-nitrilotribenzoato)trizinc(II)], [Zn3(C21H12NO6)2(C10H8N2)1.5(C3H7NO)2]n, was obtained by the solvothermal method using 4,4′,4′′-nitrilotribenzoic acid and 4,4′-bipyridine (bipy). The structure, determined by single-crystal X-ray diffraction analysis, possesses three kinds of crystallographically independent ZnIIcations, as well as binuclear Zn2(COO)4(bipy)2paddle-wheel clusters, and can be reduced to a novel topology of a (3,3,6)-connected 3-nodal net, with the Schläfli symbol {5.62}4{52.6}4{58.87} according to the topological analysis.

scholarly journals Coordination Polymers of Scandium(III) and Thiophenedicarboxylic Acid

2021 ◽  
Vol 47 (9) ◽  
pp. 593-600
Author(s):  
A. A. Lysova ◽  
V. A. Dubskikh ◽  
K. D. Abasheeva ◽  
A. A. Vasileva ◽  
D. G. Samsonenko ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Single Crystal ◽  
Diffraction Analysis ◽  
Coordination Polymers ◽  
Elemental Analysis ◽  
Metal Organic Frameworks ◽  
X Ray Diffraction ◽  
Phase Purity ◽  
X Ray ◽  
Metal Organic

Abstract Three new metal−organic frameworks based on scandium(III) cations and 2,5-thiophenedicarboxylic acid (H2Tdc) are synthesized: [Sc(Tdc)(OH)]·1.2DMF (I), [Sc(Tdc)(OH)]·2/3DMF (II), and (Me2NH2)[Sc3(Tdc)4(OH)2]·DMF (III) (DMF is N,N-dimethylformamide). The structures of the compounds are determined by single-crystal X-ray structure analysis (CIF file CCDC nos. 2067819 (I), 2067820 (II), and 2067821 (III)). The chemical and phase purity of compound I is proved by elemental analysis, thermogravimetry, X-ray diffraction analysis, and IR spectroscopy.

Two Metal–Organic Coordination Polymers Based on Polypyridyl Ligands: Crystal Structures and Inhibition of Human Spinal Tumour Cells

2018 ◽  
Vol 71 (11) ◽  
pp. 902
Author(s):  
Hua-Jie Mao ◽  
Qi-Xin Chen ◽  
Bin Han
Keyword(s):  
Coordination Polymers ◽  
Tumour Cells ◽  
Spinal Tumour ◽  
X Ray Diffraction ◽  
Polypyridyl Ligands ◽  
X Ray ◽  
Metal Organic ◽  
Diphenyl Tetrazolium Bromide ◽  
Rpmi 8226

In this work, two new metal–organic coordination polymers [Co2.5(dtp)2(H2O)5](NO3)(H2O)2 (1, H2dtp = 4′-(3,5-dicarboxyphenyl)-2,2′:6′,2″-terpyridine) [Ni(dpt)](H2O)3 (2, H2dpt = 4′-(3,5-dicarboxyphenyl)-4,2′:6′,4″- terpyridine) have been successfully prepared by reaction of metal ions with two similar carboxylic-pyridinyl ligands with different arrangement of N atoms of terpyridines under solvothermal conditions. Powder X-ray diffraction, elemental analysis, and single-crystal X-ray diffraction techniques were used to probe the structures of the as-prepared complexes. The CoII-based complex 1 exhibits a finite molecular structure and 2 displays a 3D porous framework with a 1D channel. Furthermore, the in vitro anticancer activity of complexes 1 and 2 was evaluated via the MTT (3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyl tetrazolium bromide) assay against U-266, MM1S, and RPMI-8226 human spinal tumour cells.

Structural investigation of one- and three-dimensional lanthanide(III) coordination polymers based on functionalized terpyridine carboxylate and aromatic dicarboxylate ligands

2019 ◽  
Vol 75 (4) ◽  
pp. 422-432 ◽  
Author(s):  
Chao Bai ◽  
Bin Liu ◽  
Huai-Ming Hu ◽  
Jin-Dian Li ◽  
Xiaofang Wang ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Structural Investigation ◽  
Three Dimensional ◽  
Topological Type ◽  
X Ray Diffraction ◽  
Hydrothermal Conditions ◽  
One Dimensional ◽  
X Ray ◽  
Lanthanide Coordination Polymers ◽  
3D Networks

Three series of lanthanide coordination polymers, namely catena-poly[[lanthanide(III)-μ2-(benzene-1,2-dicarboxylato)-μ2-[2-(2,2′:6′,2′′-terpyridin-4′-yl)benzoato]] monohydrate], {[Ln(C8H4O4)(C22H14N3O2)]·H2O} n or {[Ln(1,2-bdc)(L)]·H2O} n , with lanthanide (Ln) = dysprosium (Dy, 1), holmium (Ho, 2) and erbium (Er, 3), poly[bis(μ2-benzene-1,3-dicarboxylato)bis[μ2-2-(2,2′:6′,2′′-terpyridin-4′-yl)benzoato]dilanthanide(III)], [Ln2(C8H4O4)2(C22H14N3O2)2] n or [Ln2(1,3-bdc)2(L)2] n , with Ln = gadolinium (Gd, 4), Ho (5) and Er (6), and poly[(μ2-benzene-1,4-dicarboxylato)[μ2-2-(2,2′:6′,2′′-terpyridin-4′-yl)benzoato]lanthanide(III)], [Ln(C8H4O4)(C22H14N3O2)] n or [Ln(1,4-bdc)(L)] n , with Ln = Dy (7), Ho (8), Er (9) and ytterbium (Yb, 10), were synthesized under hydrothermal conditions and characterized by elemental analysis, IR and single-crystal X-ray diffraction. Compounds 1–3 possess one-dimensional loop chains with Ln2(COO)2 units, which are extended into three-dimensional (3D) supramolecular structures by π–π interactions. Isostructural compounds 5 and 6 show 6-connected 3D networks, with pcu topology consisting of Ln2(COO)2 units. Compounds 7–10 display 8-connected 3D frameworks with the topological type rob, consisting of Ln2(COO)2 units. The influence of the coordination orientations of the aromatic dicarboxylate groups on the crystal structures is discussed.

Hydrothermal synthesis, crystal structure and photoluminescence of two homochiral zinc(II) coordination polymers

2015 ◽  
Vol 71 (7) ◽  
pp. 618-622 ◽  
Author(s):  
Shao-Ming Ying ◽  
Jing-Jing Ru ◽  
Wu-Kui Luo
Keyword(s):  
Crystal Structure ◽  
Coordination Polymers ◽  
Layer Structure ◽  
Metal Organic Frameworks ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
Strong Emission ◽  
X Ray ◽  
Elemental Analyses ◽  
Metal Organic

Metal–organic frameworks (MOFs) have potentially useful applications and an intriguing variety of architectures and topologies. Two homochiral coordination polymers have been synthesized by the hydrothermal method, namely poly[(μ-N-benzyl-L-phenylalaninato-κ4O,O′:O,N)(μ-formato-κ2O:O′)zinc(II)], [Zn(C16H16NO2)(HCOO)]n, (1), and poly[(μ-N-benzyl-L-leucinato-κ4O,O′:O,N)(μ-formato-κ2O:O′)zinc(II)], [Zn(C13H18NO2)(HCOO)]n, (2), and studied by single-crystal X-ray diffraction, elemental analyses, IR spectroscopy and fluorescence spectroscopy. Compounds (1) and (2) each have a two-dimensional layer structure, with the benzyl or isobutyl groups of the ligands directed towards the interlayer interface. Photoluminescence investigations show that both (1) and (2) display a strong emission in the blue region.

scholarly journals New Topologically Unique Metal-Organic Architectures Driven by a Pyridine-Tricarboxylate Building Block

Crystals ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 353 ◽  
Author(s):  
Jinzhong Gu ◽  
Yan Cai ◽  
Min Wen ◽  
Zhijun Ge ◽  
Alexander Kirillov
Keyword(s):  
Building Block ◽  
Terephthalic Acid ◽  
Metal Organic Framework ◽  
Three Dimensional ◽  
X Ray Diffraction ◽  
X Ray ◽  
Topological Features ◽  
Metal Organic ◽  
Opening Up ◽  
Luminescent Behavior

Two new three-dimensional (3D) coordination compounds, namely a lead(II) coordination polymer (CP) {[Pb3(µ5-cpta)(µ6-cpta)(phen)2]·2H2O}n (1) and a zinc(II) metal-organic framework (MOF) {[Zn2(µ4-cpta)(µ-OH)(µ-4,4′-bipy)]·6H2O}n (2), were hydrothermally assembled from 2-(5-carboxypyridin-2-yl)terephthalic acid (H3cpta) as an unexplored principal building block and aromatic N,N-donors as crystallization mediators. Both products were isolated as air-stable microcrystalline solids and were fully characterized by IR spectroscopy, elemental and thermogravimetric analysis, and powder and single-crystal X-ray diffraction. Structural and topological features of CP 1 and MOF 2 were analyzed in detail, allowing to identify a topologically unique 4,5,5,6-connected net in 1 or a very rare 4,4-connected net with the isx topology in 2. Thermal stability and solid-state luminescent behavior of 1 and 2 were also investigated. Apart from revealing a notable topological novelty, both compounds also represent the first structurally characterized Pb(II) and Zn(II) derivatives assembled from H3cpta, thus opening up the application of this unexplored pyridine-tricarboxylate block in the design of new metal-organic architectures.

Ligand-controlled Assembly of Cd(II) Metal-Organic Coordination Polymers Based on 3,5-Dinitrobenzoate and Flexible Bis(imidazole) Derivatives

2011 ◽  
Vol 66 (2) ◽  
pp. 125-132 ◽  
Author(s):  
Guo-Cheng Liu ◽  
Jin-Xia Zhang ◽  
Xiu-Li Wang ◽  
Hong-Yan Lin ◽  
Ai-Xiang Tian ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Chain Structure ◽  
Zigzag Chain ◽  
X Ray Diffraction ◽  
X Ray ◽  
Imidazole Derivatives ◽  
Mixed Ligands ◽  
Carboxylic Groups ◽  
Metal Organic ◽  
Thermal Stability Of

Three new Cd(II) metal-organic coordination polymers, [Cd(bbi)(DNBA)2] (1), [Cd(bbbi)- (DNBA)2] (2), and [Cd(dmbbbi)(DNBA)Cl]·0.38H2O (3) [HDNBA = 3,5-dinitrobenzoic acid, bbi = 1,1-(1,4-butanediyl)bis(imidazole), bbbi = 1,1-(1,4-butanediyl)bis(benzimidazole), and dmbbbi = 1,1-(1,4-butanediyl)bis(5,6-dimethylbenzimidazole)], have been obtained from hydrothermal reactions of cadmium(II) chloride with the mixed ligands HDNBA and the three structurally related flexible bis(imidazole) derivatives. Single-crystal X-ray diffraction analyses have revealed that the dinuclear cadmium clusters acting as nodes interlinked by two μ2-carboxylic groups, are connected to four other clusters through bridging bbi (for 1) and bbbi (for 2) units to generate two extended two-dimensional (2-D) networks. Compound 3 features a 1-D zigzag chain structure. A systematic structural comparison of the title compounds indicates that the conformations and the steric hindrance of flexible bis(imidazole) derivatives each play an important role in the formation of the Cd(II) coordination polymers. The thermal stability of 1 and 2, and the luminescence behavior of 3 were also investigated.

Three Mn(II) metal organic frameworks with the same chemical compositions, but different topological structures and properties

CrystEngComm ◽  
2021 ◽  
Author(s):  
Li Tian ◽  
Zhi Long Ma ◽  
Mengchen Wang ◽  
Jian Yun Shi
Keyword(s):  
Coordination Polymers ◽  
Terephthalic Acid ◽  
Metal Organic Frameworks ◽  
Solvothermal Reaction ◽  
Chemical Compositions ◽  
X Ray Diffraction ◽  
X Ray ◽  
Multidentate Ligand ◽  
Structures And Properties ◽  
Metal Organic

Solvothermal reaction of a novel multidentate ligand 2,5-bis-(1,2,4-triazol-1-yl)-terephthalic acid (H2TTPA), with MnCl2 afforded three structurally different coordination polymers with the similar formula [Mn(TTPA)•H2O]n (Mn-(1-3)). Single-crystal X-ray diffraction analyses show that...

Syntheses, supramolecular networks and Hirshfeld surface and thermal analyses of two new cadmium chloride coordination polymers with an N,O-chelating ligand

2019 ◽  
Vol 75 (2) ◽  
pp. 120-127 ◽  
Author(s):  
Rafika Bouchene ◽  
Sofiane Bouacida
Keyword(s):  
Coordination Polymers ◽  
Noncovalent Interactions ◽  
Thermal Analyses ◽  
Topological Analysis ◽  
Three Dimensional ◽  
Bidentate Ligand ◽  
Hirshfeld Surface ◽  
X Ray Diffraction ◽  
X Ray ◽  
Supramolecular Networks

Two new coordination polymers, namely poly[[(3-aminopyrazin-4-ium-2-carboxylate-κ2 N 1,O)di-μ-chlorido-cadmium(II)] monohydrate], {[CdCl2(C5H5N3O2)]·H2O} n , (1), and poly[2-amino-3-carboxypyrazin-1-ium [(3-aminopyrazine-2-carboxylato-κ2 N 1,O)di-μ-chlorido-cadmium(II)] monohydrate], {(C5H6N3O2)[Cd(C5H4N3O2)Cl2]·H2O} n , (2), have been synthesized from the reaction of cadmium(II) chloride and 3-aminopyrazine-2-carboxylic acid (Hapca) under mild conditions in acidic media. The two coordination polymers have been characterized by single-crystal X-ray diffraction and show chloride-bridged zigzag chains with octahedrally coordinated metal ions, where Hapca acts as a bidentate ligand via the π-conjugated N atom and a carboxylate O atom. The chains are further interconnected via noncovalent interactions into three-dimensional supramolecular networks. The dominant H...O and H...Cl interactions for both compounds were quantified using Hirshfeld surface analysis. The thermal stability and topological analysis of the two-dimensional networks of (1) and (2) are also discussed.

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