A two-dimensional bilayered CdIIcoordination polymer with a three-dimensional supramolecular architecture incorporating 1,2-bis(pyridin-4-yl)ethene and 2,2′-(diazenediyl)dibenzoic acid

2014 ◽  
Vol 70 (2) ◽  
pp. 178-181 ◽  
Author(s):  
Lei-Lei Liu ◽  
Yan Zhou ◽  
Ping Li ◽  
Jiang-Ya Tian
Keyword(s):  
Hydrogen Bonding ◽  
Three Dimensional ◽  
Distorted Octahedron ◽  
Stacking Interactions ◽  
Supramolecular Architecture ◽  
Two Dimensional ◽  
Asymmetric Unit ◽  
Aromatic Stacking ◽  
Carboxylate Groups ◽  
Bilayered Structure

In poly[[μ2-1,2-bis(pyridin-4-yl)ethene-κ2N:N′][μ2-2,2′-(diazenediyl)dibenzoato-κ3O,O′:O′′]cadmium(II)], [Cd(C14H8N2O4)(C12H10N2)]n, the asymmetric unit contains one CdIIcation, one 2,2′-(diazenediyl)dibenzoate anion (denotedL2−) and one 1,2-bis(pyridin-4-yl)ethene ligand (denoted bpe). Each CdIIcentre is six-coordinated by four O atoms of bridging/chelating carboxylate groups from threeL2−ligands and by two N atoms from two bpe ligands, forming a distorted octahedron. The CdIIcations are bridged byL2−and bpe ligands to give a two-dimensional (4,4) layer. The layers are interlinked through bridging carboxylate O atoms fromL2−ligands, generating a two-dimensional bilayered structure with a 3641362topology. The bilayered structures are further extended to form a three-dimensional supramolecular architectureviaa combination of hydrogen-bonding and aromatic stacking interactions.

A two-dimensional CdII coordination polymer with 2,2′-(disulfanediyl)dibenzoate and 1,10-phenanthroline ligands

2014 ◽  
Vol 70 (5) ◽  
pp. 517-521
Author(s):  
Yu-Xiu Jin ◽  
Fang Yang ◽  
Li-Min Yuan ◽  
Chao-Guo Yan ◽  
Wen-Long Liu
Keyword(s):  
Coordination Polymer ◽  
Three Dimensional ◽  
Phen Ligand ◽  
Supramolecular Architecture ◽  
Two Dimensional ◽  
Asymmetric Unit ◽  
Π Interactions ◽  
Carboxylate Groups ◽  
Phenanthroline Ligand ◽  
Phenanthroline Ligands

In poly[[μ3-2,2′-(disulfanediyl)dibenzoato-κ5 O:O,O′:O′′,O′′′](1,10-phenanthroline-κ2 N,N′)cadmium(II)], [Cd(C14H8O4S2)(C12H8N2)] n , the asymmetric unit contains one CdII cation, one 2,2′-(disulfanediyl)dibenzoate anion (denoted dtdb2−) and one 1,10-phenanthroline ligand (denoted phen). Each CdII centre is seven-coordinated by five O atoms of bridging/chelating carboxylate groups from three dtdb2− ligands and by two N atoms from one phen ligand, forming a distorted pentagonal–bipyramidal geometry. The CdII cations are bridged by dtdb2− anions to give a two-dimensional (4,4) layer. The layers are stacked to generate a three-dimensional supramolecular architecture via a combination of aromatic C—H...π and π–π interactions. The thermogravimetric and luminescence properties of this compound were also investigated.

Infinite ladder-like chains organized into a three-dimensional zigzag supramolecular architecture in 9-deazahypoxanthine

2013 ◽  
Vol 69 (2) ◽  
pp. 158-161 ◽  
Author(s):  
Radka Novotná ◽  
Zdeněk Trávníček
Keyword(s):  
Hydrogen Bonding ◽  
Secondary Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Stacking Interactions ◽  
Supramolecular Architecture ◽  
Asymmetric Unit ◽  
Compound C ◽  
Centrosymmetric Dimers

The asymmetric unit of the title compound, C6H5N3O, consists of discrete molecules of 9-deazahypoxanthine [systematic name: 3H-pyrrolo[3,2-d]pyrimidin-4(5H)-one]. The structure displays N—H...O hydrogen bonding, connecting the molecules into centrosymmetric dimers. These dimers are then connected by N—H...N hydrogen bonds into a ladder-like chain along thecaxis. The secondary structure is stabilized by weak noncovalent contacts of the C—H...O and C—H...C types, as well as by π–π stacking interactions, which organize the structure into a zigzag architecture.

Poly[(μ5-3-carboxybenzene-1,2-dicarboxylato)lead(II)]: a helical lead(II) coordination polymer

2014 ◽  
Vol 70 (7) ◽  
pp. 693-696
Author(s):  
Shao-Min Cheng ◽  
Xian-Fei Wang ◽  
Fang Yang ◽  
Hang Chen ◽  
Wen-Long Liu
Keyword(s):  
Optical Properties ◽  
Coordination Polymer ◽  
Three Dimensional ◽  
Pentagonal Bipyramid ◽  
Supramolecular Architecture ◽  
Two Dimensional ◽  
Asymmetric Unit ◽  
Carboxylate Groups

In the title polymer, [Pb(C9H4O6)]n, the asymmetric unit contains a monomer of a PbIIcation with a doubly deprotonated 3-carboxybenzene-1,2-dicarboxylate dianion (1,2,3-Hbtc2−). Each PbIIcentre is seven-coordinated by seven O atoms of bridging carboxy/carboxylate groups from five 1,2,3-Hbtc2−ligands, forming a distorted pentagonal bipyramid. The PbIIcations are bridged by 1,2,3-Hbtc2−anions, yielding two-dimensional chiral layers. The layers are stacked above each other to generate a three-dimensional supramolecular architectureviaa combination of C—H...O interactions. The thermogravimetric and optical properties are also reported.

A simple hydrated salt with a complex hydrogen-bonding network: tetrakis(5-amino-3-carboxy-4H-1,2,4-triazol-1-ium) hexachloridocadmate(II) tetrahydrate

2014 ◽  
Vol 70 (7) ◽  
pp. 672-676
Author(s):  
Rafika Bouchene ◽  
Sofiane Bouacida ◽  
Fadila Berrah ◽  
Thierry Roisnel
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Cadmium Chloride ◽  
Three Dimensional ◽  
Supramolecular Network ◽  
Chloride Salt ◽  
Stacking Interactions ◽  
Asymmetric Unit ◽  
Aromatic Stacking ◽  
Hydrated Salt

In the title cadmium chloride salt, (C3H5N4O2)4[CdCl6]·4H2O, the asymmetric unit comprises two N-protonated 5-amino-3-carboxy-4H-1,2,4-triazol-1-ium cations, half a [CdCl6]4−anion and two molecules of water. The Cd2+cation is located on a centre of inversion and is coordinated by six chloride anions, forming a distorted octahedron. In the crystal structure, alternating layers of cations and anions are arranged along the [101] direction, forming a three-dimensional supramolecular networkviaa combination of hydrogen-bonding and aromatic stacking interactions.

Assembly of a Flexible 2,2ʹ-Oxydibenzoate and Silver(I) Ions to a Novel 3D Supramolecular Framework: Syntheses, Structure and Properties

2012 ◽  
Vol 67 (11) ◽  
pp. 1191-1196 ◽  
Author(s):  
Chong-Zhen Mei ◽  
Kai-Hui Li ◽  
Hai-Hua Li
Keyword(s):  
Hydrogen Bonding ◽  
Elemental Analysis ◽  
Self Assembly ◽  
Three Dimensional ◽  
Stacking Interactions ◽  
Supramolecular Architecture ◽  
Supramolecular Framework ◽  
Structure And Properties ◽  
X Ray Diffraction ◽  
X Ray

Self-assembly of silver(I) cations, flexible 2,2ʹ-oxydibenzoate anions (L2-), and 1,2-bis(4- pyridyl)ethane (bpa) ligands affords a new three-dimensional supramolecular architecture, {[Ag2(L)(bpa)2]⋅(H2O)4}n (1), which has been characterized by elemental analysis, IR, TGA, PXRD, and single-crystal X-ray diffraction. Complex 1exhibits layers further connected through hydrogen bonding and π...π stacking interactions. Its photoluminescence was also investigated.

scholarly journals Crystal structure of bis(4-acetylanilinium) tetrachloridocobaltate(II)

2015 ◽  
Vol 71 (12) ◽  
pp. m221-m222 ◽  
Author(s):  
Manickam Thairiyaraja ◽  
Arumugam Elangovan ◽  
Ramasamy Shanmugam ◽  
Kuthambalam Selvaraju ◽  
Subbiah Thamotharan
Keyword(s):  
Hydrogen Bonding ◽  
Three Dimensional ◽  
Mirror Plane ◽  
Stacking Interactions ◽  
Asymmetric Unit ◽  
Hydrogen Bonding Interactions ◽  
Dimensional Network ◽  
Centroid Distance ◽  
Benzene Rings ◽  
Tetrahedral Anion

The structure of the title salt, (C8H10NO)2[CoCl4], is isotypic with the analogous cuprate(II) structure. The asymmetric unit contains one 4-acetylanilinium cation and one half of a tetrachloridocobaltate(II) anion for which the CoIIatom and two Cl−ligands lie on a mirror plane. The Co—Cl distances in the distorted tetrahedral anion range from 2.2519 (6) to 2.2954 (9) Å and the Cl—Co—Cl angles range from 106.53 (2) to 110.81 (4)°. In the crystal, cations are self-assembled by intermolecular N—H...O hydrogen-bonding interactions, leading to aC(8) chain motif with the chains running parallel to thebaxis. π–π stacking interactions between benzene rings, with a centroid-to-centroid distance of 3.709 Å, are also observed along this direction. The CoCl42−anions are sandwiched between the cationic chains and interact with each other through intermolecular N—H...Cl hydrogen-bonding interactions, forming a three-dimensional network structure.

scholarly journals Crystal structure of (E)-1-methyl-2-[2-(2-methoxphenyl)ethenyl]-4-nitro-1H-imidazole

2014 ◽  
Vol 70 (9) ◽  
pp. o966-o967
Author(s):  
Hayette Alliouche ◽  
Abdelmalek Bouraiou ◽  
Sofiane Bouacida ◽  
Hocine Merazig ◽  
Ali Belfaitah
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Dihedral Angle ◽  
Title Compound ◽  
Crystal Packing ◽  
Three Dimensional ◽  
Stacking Interactions ◽  
Asymmetric Unit ◽  
Compound C ◽  
Dimensional Network

In the asymmetric unit of the title compound, C13H13N3O3, the 2-(2-methoxphenyl)ethenyl unit is connected to the methyl-nitroimidazole 1-methyl-4-nitro-1H-imidazole moiety. The molecule is quasi-planar and the planes of the two rings form a dihedral angle of 0.92 (11)°. The crystal packing can be described as layers parallel to the (011) plane, stabilized by intermolecular C—H...O hydrogen bonding, resulting in the formation of an infinite three-dimensional network linking these layers. Strong π–π stacking interactions are observed,viz.benzene–benzene, imidazole–imidazole and benzene–imidazole rings, with centroid–centroid distances of 3.528 (2), 3.457 (2) and 3.544 (2) Å, respectively. Intensity statistics indicated twinning by non-merohedry, with refined weighs of the twin components of 0.3687:0.6313.

scholarly journals Poly[diaqua(μ5-1H-imidazole-4,5-dicarboxylato)(μ4-1H-imidazole-4,5-dicarboxylato)trisilver(I)ytterbium(III)]

2012 ◽  
Vol 68 (8) ◽  
pp. m1073-m1074
Author(s):  
Si-Ming Zhu
Keyword(s):  
Hydrogen Bonding ◽  
Three Dimensional ◽  
The Other ◽  
Water Molecules ◽  
Coordination Geometry ◽  
Two Dimensional ◽  
Asymmetric Unit ◽  
Hydrogen Bonding Interactions ◽  
Trigonal Prismatic Coordination ◽  
Trigonal Prismatic

The asymmetric unit of the title compound, [Ag3Yb(C5HN2O4)2(H2O)2]n, contains three AgIions, one YbIIIion, two imidazole-4,5-dicarboxylate ligands and two coordinating water molecules. The YbIIIatom is eight-coordinated, in a bicapped trigonal prismatic coordination geometry, by six O atoms from three imidazole-4,5-dicarboxylate ligands and two coordinating water molecules. The two-coordinated AgIions exhibit three types of coordination environments. One AgIatom is bonded to two N atoms from two different imidazole-4,5-dicarboxylate ligands. The other two AgIatoms are each coordinated by one O atom and one N atom from two different imidazole-4,5-dicarboxylate ligands. These metal coordination units are connected by bridging imidazole-4,5-dicarboxylate ligands, generating a two-dimensional heterometallic layer. These layers are stacked along theaaxisviaO—H...O hydrogen-bonding interactions to generate a three-dimensional framework.

Symmetrically 4,6-disubstituted 2-aminopyrimidines and 2-amino-5-nitrosopyrimidines: interplay of molecular, molecular–electronic and supramolecular structures

2004 ◽  
Vol 60 (1) ◽  
pp. 76-89 ◽  
Author(s):  
Antonio Quesada ◽  
Antonio Marchal ◽  
Manuel Melguizo ◽  
John N. Low ◽  
Christopher Glidewell
Keyword(s):  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Electronic Structures ◽  
Three Dimensional ◽  
Supramolecular Structures ◽  
Nitroso Compounds ◽  
Stacking Interactions ◽  
Two Dimensional ◽  
Molecular Electronic ◽  
One Dimensional

The structures of six symmetrically 4,6-disubstituted 2-aminopyrimidines, four of them containing a 5-nitroso substituent, have been determined. The nitroso compounds, in particular, exhibit polarized molecular–electronic structures leading to extensive charge-assisted hydrogen bonding. The intermolecular interactions observed include hard hydrogen bonds of N—H...N and N—H...O types together with O—H...O and O—H...N types in 2-amino-4,6-bis(2-hydroxyethylamino)-5-nitrosopyrimidine; soft hydrogen bonds of the C—H...O type in both 2-amino-4,6-bis(morpholino)-5-nitrosopyrimidine (3) and 2-amino-4,6-bis(benzylamino)-5-nitrosopyrimidine (4), and of the C—H...π(arene) type in both 2-amino-4,6-bis(piperidino)pyrimidine (1) and 2-amino-5-nitroso-4,6-bis(3-pyridylmethoxy)pyrimidine (5); and aromatic π...π stacking interactions in 2-amino-5-nitroso-4,6-bis(3-pyridylmethoxy)pyrimidine. The supramolecular structures formed by the hard hydrogen bonds are finite, zero-dimensional in (1), one-dimensional in 2-amino-4,6-bis(3-pyridylmethoxy)pyrimidine (2), two-dimensional in both (3) and (4), and three-dimensional in both (5) and 2-amino-4,6-bis(2-hydroxyethylamino)-5-nitrosopyrimidine.

A three-dimensional PbIIcoordination framework: poly[[μ4-(E)-2,2′-(diazene-1,2-diyl)dibenzoato]dimethanollead(II)]

2014 ◽  
Vol 70 (7) ◽  
pp. 650-653
Author(s):  
Lei-Lei Liu ◽  
Cai-Xia Yu ◽  
Lei Hua ◽  
Lu Lin
Keyword(s):  
Coordination Polymer ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Asymmetric Unit ◽  
One Dimensional ◽  
Carboxylate Groups

In the title coordination polymer, [Pb(C14H8N2O4)(CH3OH)2]n, the asymmetric unit contains half of a PbIIcation, half of a 2,2′-(diazene-1,2-diyl)dibenzoate dianionic ligand (denotedL2−) and one methanol ligand. Each PbIIcentre is eight-coordinated by six O atoms of chelating/bridging carboxylate groups from fourL2−ligands and two O atoms from two terminal methanol ligands, forming a distorted dodecahedron. The [PbL2(MeOH)2] subunits are interlinkedviathe sharing of two carboxylate O atoms to form a one-dimensional [PbL2(MeOH)2]nchain. Adjacent chains are further connected byL2−ligands, giving rise to a two-dimensional layer, and these layers are bridged byL2−linkers to afford a three-dimensional framework with a 41263topology.

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