Coordination polymers of organic polymers synthesized via photopolymerization of single crystals: two-dimensional hydrogen bonding layers with amazing shock absorbing nature

2014 ◽  
Vol 50 (27) ◽  
pp. 3568-3570 ◽  
Author(s):  
Mousumi Garai ◽  
Kumar Biradha
Keyword(s):  
Hydrogen Bonding ◽  
Single Crystals ◽  
Coordination Polymers ◽  
Two Dimensional ◽  
Organic Polymers ◽  
Hydrogen Bonded

Crystalline coordination polymers of organic polymers (CPOPs) were synthesized via photopolymerization of Ag(i) coordination polymers of dienes which have a self-templating nature due to the formation of N–H⋯O hydrogen bonded layers.

Hydrogen-bonding networks of purine derivatives and their bilayers for guest intercalation

CrystEngComm ◽  
2016 ◽  
Vol 18 (1) ◽  
pp. 62-67
Author(s):  
Yoona Jang ◽  
Seo Yeon Yoo ◽  
Hye Rin Gu ◽  
Yu Jin Lee ◽  
Young Shin Cha ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Two Dimensional ◽  
Purine Derivatives ◽  
Guest Molecules ◽  
Π Interactions ◽  
Hydrogen Bonding Networks ◽  
Hydrogen Bonded

6-Chloro-9-propyl-purin-2-amine (pr-GCl) forms two-dimensional hydrogen-bonded networks which in turn stack via π–π interactions, leading to the formation of bilayers that can accommodate organic guest molecules.

Polymorphs of phenazine hexacyanoferrate(II) hydrate: supramolecular isomerism in a 2D hydrogen-bonded network

2021 ◽  
Vol 77 (2) ◽  
pp. 211-218
Author(s):  
Ivica Cvrtila ◽  
Vladimir Stilinović
Keyword(s):  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Crystal Structures ◽  
The Other ◽  
Two Dimensional ◽  
Structural Motifs ◽  
Supramolecular Isomerism ◽  
Other Hand ◽  
Π Stacking ◽  
Hydrogen Bonded

The crystal structures of two polymorphs of a phenazine hexacyanoferrate(II) salt/cocrystal, with the formula (Hphen)3[H2Fe(CN)6][H3Fe(CN)6]·2(phen)·2H2O, are reported. The polymorphs are comprised of (Hphen)2[H2Fe(CN)6] trimers and (Hphen)[(phen)2(H2O)2][H3Fe(CN)6] hexamers connected into two-dimensional (2D) hydrogen-bonded networks through strong hydrogen bonds between the [H2Fe(CN)6]2− and [H3Fe(CN)6]− anions. The layers are further connected by hydrogen bonds, as well as through π–π stacking of phenazine moieties. Aside from the identical 2D hydrogen-bonded networks, the two polymorphs share phenazine stacks comprising both protonated and neutral phenazine molecules. On the other hand, the polymorphs differ in the conformation, placement and orientation of the hydrogen-bonded trimers and hexamers within the hydrogen-bonded networks, which leads to different packing of the hydrogen-bonded layers, as well as to different hydrogen bonding between the layers. Thus, aside from an exceptional number of symmetry-independent units (nine in total), these two polymorphs show how robust structural motifs, such as charge-assisted hydrogen bonding or π-stacking, allow for different arrangements of the supramolecular units, resulting in polymorphism.

The effect of the coordination orientation of N atoms on polymeric structures: synthesis and characterization of one- and two-dimensional CuII coordination polymers based on 4-amino-3-(pyridin-2-yl)-5-[(pyridin-3-ylmethyl)sulfanyl]-1,2,4-triazole

2019 ◽  
Vol 75 (4) ◽  
pp. 443-450
Author(s):  
Guiying Zhu ◽  
Yang Lu ◽  
Guoxia Jin ◽  
Xuan Ji ◽  
Jianping Ma
Keyword(s):  
Hydrogen Bonding ◽  
Coordination Polymers ◽  
3D Structure ◽  
Three Dimensional ◽  
Great Influence ◽  
Two Dimensional ◽  
3D Network ◽  
Solvent Molecules ◽  
Bonding Systems ◽  
Polymeric Structures

Three new one- (1D) and two-dimensional (2D) CuII coordination polymers, namely poly[[bis{μ2-4-amino-3-(pyridin-2-yl)-5-[(pyridin-3-ylmethyl)sulfanyl]-1,2,4-triazole}copper(II)] bis(methanesulfonate) tetrahydrate], {[Cu(C13H12N5S)2](CH3SO3)2·4H2O} n (1), catena-poly[[copper(II)-bis{μ2-4-amino-3-(pyridin-2-yl)-5-[(pyridin-4-ylmethyl)sulfanyl]-1,2,4-triazole}] dinitrate methanol disolvate], {[Cu(C13H12N5S)2](NO3)2·2CH3OH} n (2), and catena-poly[[copper(II)-bis{μ2-4-amino-3-(pyridin-2-yl)-5-[(pyridin-4-ylmethyl)sulfanyl]-1,2,4-triazole}] bis(perchlorate) monohydrate], {[Cu(C13H12N5S)2](ClO4)2·H2O} n (3), were obtained from 4-amino-3-(pyridin-2-yl)-5-[(pyridin-3-ylmethyl)sulfanyl]-1,2,4-triazole with pyridin-3-yl terminal groups and from 4-amino-3-(pyridin-2-yl)-5-[(pyridin-4-ylmethyl)sulfanyl]-1,2,4-triazole with pyridin-4-yl terminal groups. Compound 1 displays a 2D net-like structure. The 2D layers are further linked through hydrogen bonds between methanesulfonate anions and amino groups on the framework and guest H2O molecules in the lattice to form a three-dimensional (3D) structure. Compound 2 and 3 exhibit 1D chain structures, in which the complicated hydrogen-bonding interactions play an important role in the formation of the 3D network. These experimental results indicate that the coordination orientation of the heteroatoms on the ligands has a great influence on the polymeric structures. Moreover, the selection of different counter-anions, together with the inclusion of different guest solvent molecules, would also have a great effect on the hydrogen-bonding systems in the crystal structures.

scholarly journals Two cadmium coordination polymers with bridging acetate and phenylenediamine ligands that exhibit two-dimensional layered structures

2016 ◽  
Vol 72 (12) ◽  
pp. 1718-1723 ◽  
Author(s):  
David K. Geiger ◽  
Dylan E. Parsons ◽  
Bracco A. Pagano
Keyword(s):  
Hydrogen Bonding ◽  
Coordination Polymers ◽  
Layered Structures ◽  
Two Dimensional ◽  
Coordination Environment ◽  
Distorted Octahedral ◽  
Water Of Hydration ◽  
Hydrogen Bonding Network ◽  
Polymeric Structures

Poly[tetra-μ2-acetato-κ8O:O′-bis(μ2-benzene-1,2-diamine-κ2N:N′)dicadmium], [Cd2(CH3COO)4(C6H8N2)2]n, (I), and poly[[(μ2-acetato-κ2O:O′)(acetato-κ2O,O′)(μ2-benzene-1,3-diamine-κ2N:N′)cadmium] hemihydrate], {[Cd(CH3COO)2(C6H8N2)]·0.5H2O}n, (II), have two-dimensional polymeric structures in which monomeric units are joined by bridging acetate and benzenediamine ligands. Each of the CdIIions has an O4N2coordination environment. The coordination geometries of the symmetry-independent CdIIions are distorted octahedral and distorted trigonal antiprismatic in (I) and distorted antiprismatic in (II). Both compounds exhibit an intralayer hydrogen-bonding network. In addition, the water of hydration in (II) is involved in interlayer hydrogen bonding.

A calcium-bridged porphyrin coordination network

2002 ◽  
Vol 06 (06) ◽  
pp. 377-381 ◽  
Author(s):  
Margaret E. Kosal ◽  
Jun-Hong Chou ◽  
Kenneth S. Suslick
Keyword(s):  
Hydrogen Bonding ◽  
Solid State ◽  
Coordination Polymers ◽  
Three Dimensional ◽  
Pyridine Molecule ◽  
Two Dimensional ◽  
X Ray ◽  
Hydrogen Bonding Interactions ◽  
Dimensional Network ◽  
Polymeric Framework

The hydrothermal assembly of a very stable porphyrin network with nanoscale cavities is described. A tightly packed and interpenetrated, linear polymeric framework was observed in the solid-state X-ray structure of freebase 5,10,15,20-tetrakis-(4-carboxyphenyl)porphyrin coordinated to calcium(II) ions. Strong hydrogen-bonding interactions between the coordination polymers form a two-dimensional network. Perpendicular bands interpenetrate generating an unusual three-dimensional box that clathrates a pyridine molecule.

A series of two-dimensional lanthanide coordination polymers: synthesis, structures, magnetism and selective luminescence detection for heavy metal ions and toxic solvents

2019 ◽  
Vol 75 (2) ◽  
pp. 221-230 ◽  
Author(s):  
Hongguo Hao ◽  
Hongyan Liu ◽  
Yuchen Wang ◽  
Suxian Yuan ◽  
Han Xu ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Metal Ions ◽  
Coordination Polymers ◽  
Double Layers ◽  
Antiferromagnetic Coupling ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
X Ray ◽  
Hydrogen Bonding Interactions ◽  
Strong Luminescence

A series of two-dimensional (2D) coordination polymers (CPs), namely poly[[bis(μ-acetato)diaqua(μ6-biphenyl-3,3′,5,5′-tetracarboxylato)bis(N,N-dimethylacetamide)digadolinium(III)] N,N-dimethylacetamide monosolvate], {[Gd2(C16H6O8)(C2H3O2)2(C4H9NO)2(H2O)2]·C4H9NO} n (CP1), poly[[bis(μ-acetato)diaqua(μ6-biphenyl-3,3′,5,5′-tetracarboxylato)bis(N,N-dimethylacetamide)didysprosium(III)] N,N-dimethylacetamide monosolvate], {[Dy2(C16H6O8)(C2H3O2)2(C4H9NO)2(H2O)2]·C4H9NO} n (CP2), poly[bis(μ-acetato)diaqua(μ6-biphenyl-3,3′,5,5′-tetracarboxylato)bis(N,N-dimethylacetamide)dineodymium(III)], [Nd2(C16H6O8)(C2H3O2)2(C4H9NO)2(H2O)2] n (CP3), poly[bis(μ-acetato)diaqua(μ6-biphenyl-3,3′,5,5′-tetracarboxylato)bis(N,N-dimethylacetamide)disamarium(III)], [Sm2(C16H6O8)(C2H3O2)2(C4H9NO)2(H2O)2] n (CP4), has been synthesized from rigid biphenyl-3,3′,5,5′-tetracarboxylic acid under solvothermal conditions. Their structures have been determined by single-crystal X-ray diffraction analyses, elemental analyses, IR spectra, powder X-ray diffraction and thermogravimetric analyses, and CP1–CP4 crystallize in the monoclinic space group P21/n. CP1–CP4 are isomorphous and feature similar 2D double layers, which are further extended via interlayer hydrogen-bonding interactions into a three-dimensional (3D) supramolecular structure. Hydrogen-bonding interactions between N,N-dimethylacetamide molecules and carboxylate O atoms strengthen the packing of the layers. The organic ligands interconnect with metal ions to generate 2D layered structures with a (4,4)-connected net having {44.62} topology. CP1 has been investigated for its magnetic properties and magnetic susceptibility measurements were carried out in the range 2.0–300 K. The results of the magnetic measurements show weak antiferromagnetic coupling between the GdIII ions in CP1. Moreover, the strong luminescence of CP2 and CP4 can be selectively quenched by the Fe3+ ion and toxic solvents (e.g. acetone).

scholarly journals Two-dimensional hydrogen-bonded polymers in the crystal structures of the ammonium salts of phenoxyacetic acid, (4-fluorophenoxy)acetic acid and (4-chloro-2-methylphenoxy)acetic acid

2014 ◽  
Vol 70 (12) ◽  
pp. 528-532 ◽  
Author(s):  
Graham Smith
Keyword(s):  
Hydrogen Bonding ◽  
Acetic Acid ◽  
Water Molecule ◽  
Rotation Axis ◽  
Ammonium Salts ◽  
Phenoxyacetic Acid ◽  
Two Dimensional ◽  
The Core ◽  
Ammonium N ◽  
Hydrogen Bonded

The structures of the ammonium salts of phenoxyacetic acid, NH4+·C8H6O3−, (I), (4-fluorophenoxy)acetic acid, NH4+·C8H5FO3−, (II), and the herbicidally active (4-chloro-2-methylphenoxy)acetic acid (MCPA), NH4+·C9H8ClO3−·0.5H2O, (III) have been determined. All have two-dimensional layered structures based on inter-species ammonium N—H...O hydrogen-bonding associations, which give core substructures consisting primarily of conjoined cyclic motifs. The crystals of (I) and (II) are isomorphous with the core comprisingR12(5),R12(4) and centrosymmetricR42(8) ring motifs, giving two-dimensional layers lying parallel to (100). In (III), the water molecule of solvation lies on a crystallographic twofold rotation axis and bridges two carboxyl O atoms in anR44(12) hydrogen-bonded motif, creating twoR43(10) rings, which together with a conjoined centrosymmetricR42(8) ring incorporating both ammonium cations, generate two-dimensional layers lying parallel to (100). No π–π ring associations are present in any of the structures.

Two-dimensional hydrogen-bonded supramolecular networks in the compounds of benzene-1,2,4,5-tetracarboxylic acid (pyromellitic acid) with 2,2′-biimidazole and 4,4′-dimethyl-2,2′-bipyridine

2013 ◽  
Vol 69 (12) ◽  
pp. 1537-1540
Author(s):  
Kai-Long Zhong
Keyword(s):  
Hydrogen Bonding ◽  
Ion Pairs ◽  
Two Dimensional ◽  
Tetracarboxylic Acid ◽  
Pyromellitic Acid ◽  
One Dimensional ◽  
Proton Transfer Reactions ◽  
Pyridinium Cations ◽  
Supramolecular Networks ◽  
Hydrogen Bonded

Two products from the proton-transfer reactions of benzene-1,2,4,5-tetracarboxylic acid (pyromellitic acid, PMA) with 2,2′-biimidazole and 4,4′-dimethyl-2,2′-bipyridine, namely 2,2′-biimidazole-3,3′-diium 2,5-dicarboxybenzene-1,4-dicarboxylate, C6H8N42+,C10H4O82−, (I), and 4-methyl-2-(4-methylpyridin-2-yl)pyridinium 2,4,5-tricarboxybenzoate monohydrate, C12H13N2+·C10H5O8−·H2O, (II), have been prepared and their structures determined. Both compounds crystallize in the space groupP\overline{1}. The asymmetric unit of (I) is composed of two independent ion pairs. Both the 2,2′-biimidazole-3,3′-diium dication and the PMA2−anion are located on special positions (inversion centres). The protonated 2,2′-biimidazole-3,3′-diium ring H atoms are involved in hydrogen bonding with carboxylate O atoms to form one-dimensional hydrogen-bonded chain structures. Adjacent chains are further linkedviacarboxyl–carboxyl O—H...O hydrogen bonding, resulting in a two-dimensional supramolecular sheet with theR65(34) motif extending in the (1\overline{2}1) plane. In (II), classical O—H...O hydrogen-bond-linked anion–anion units are extended into a one-dimensional chain running parallel to the [100] direction, giving anR22(8)R44(30) motif. The chains are connected by water–carboxyl O—H...O hydrogen bonds to form a two-dimensional network parallel to the (01\overline{1}) plane. The 4-methyl-2-(4-methylpyridin-2-yl)pyridinium cations lie between the two-dimensional supramolecular layers linkedviaN—H...O hydrogen-bonding interactions.

Two new CoII coordination polymers with multifunctional 5-amino-2,4,6-tribromoisophthalic acid and flexible isomeric bis(imidazole) ligands: preparation, crystal structure and characterization

2018 ◽  
Vol 74 (4) ◽  
pp. 504-512
Author(s):  
Chang-Kai Su ◽  
Kou-Lin Zhang
Keyword(s):  
Coordination Polymers ◽  
Three Dimensional ◽  
Halogen Bonding ◽  
Supramolecular Network ◽  
Two Dimensional ◽  
Tetrahedral Configuration ◽  
Distorted Octahedral Coordination Geometry ◽  
Distorted Octahedral ◽  
Imidazole Ligands ◽  
Hydrogen Bonded

Two new CoII coordination polymers (CPs), namely, catena-poly[[[(5-amino-2,4,6-tribromobenzene-1,3-dicarboxylato-κO)aquacobalt(II)]-bis[μ-1,3-bis(imidazol-1-ylmethyl)benzene-κ2 N:N′]] 4.75-hydrate], {[Co(C8H2Br3NO4)(C14H14N4)2(H2O)]·4.75H2O} n , (1), and poly[(μ-5-amino-2,4,6-tribromobenzene-1,3-dicarboxylato-κ2 O 1:O 3)[μ-1,2-bis(imidazol-1-ylmethyl)benzene-κ2 N:N′]cobalt(II)], [Co(C8H2Br3NO4)(C14H14N4)] n , (2), have been synthesized successfully by the assembly of multifunctional 5-amino-2,4,6-tribromoisophthalic acid (H2ATBIP) and CoII ions in the presence of the flexible isomeric bis(imidazole) ligands 1,3-bis(imidazol-1-ylmethyl)benzene (mbix) and 1,2-bis(imidazol-1-ylmethyl)benzene (obix). The isomeric mbix and obix ligands have a big influence on the structures of CPs (1) and (2). CP (1) is composed of chains of nanometre-sized elliptical rings, in which the CoII atom exhibits a distorted octahedral coordination geometry and ATBIP2− acts as a monodentate ligand. Two adjacent chains are interlinked by π–π stacking interactions and hydrogen bonds, resulting in a supramolecular double chain. Hydrogen-bonded R 8 6(16) rings extend adjacent supramolecular double chains into a two-dimensional supramolecular layer. Halogen bonding and a hydrogen-bonded R 4 2(8) ring further link the two-dimensional supramolecular layers, leading to the formation of a three-dimensional supramolecular network. The CoII ion in CP (2) is tetracoordinated, exhibiting a distorted tetrahedral configuration. The ATBIP2− ligand exhibits a bis(monodentate) coordination bridging mode, linking adjacent CoII ions into zigzag chains, which are further bridged by the auxiliary bridging obix ligand, resulting in a two-dimensional (4,4) topological network. Interlayer hydrogen and halogen–halogen bonding further extend the two-dimensional layers into a three-dimensional supramolecular network. A detailed analysis of the solid-state UV–Vis–NIR diffuse-reflectance spectra of (1) and (2) indicates that a wide optical band gap exists in both (1) and (2). CP (1) exhibits an irreversible dehydration–rehydration behaviour.

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