Controllable assembly of a three-dimensional metal–organic supramolecular framework displaying hydrogen-bonding and π–π stacking interactions

2014 ◽  
Vol 70 (7) ◽  
pp. 722-725 ◽  
Author(s):  
Hua Cai ◽  
Yan-Ling Xiao ◽  
Ying Guo ◽  
Jian-Gang Li
Keyword(s):  
Hydrogen Bonding ◽  
Three Dimensional ◽  
Solvothermal Reaction ◽  
Stacking Interactions ◽  
Hydrothermal Conditions ◽  
Structural Units ◽  
One Dimensional ◽  
Π Stacking ◽  
Metal Organic ◽  
The One

The complex poly[[aqua(μ2-phthalato-κ2O1:O2){μ3-2-[3-(pyridin-2-yl)-1H-pyrazol-1-yl]acetato-κ4N2,N3:O:O′}{μ2-2-[3-(pyridin-2-yl)-1H-pyrazol-1-yl]acetato-κ3N2,N3:O}dizinc(II)] dihydrate], {[Zn2(C10H8N3O2)2(C8H4O4)(H2O)]·2H2O}n, has been prepared by solvothermal reaction of 2-[3-(pyridin-2-yl)-1H-pyrazol-1-yl]acetonitrile (PPAN) with zinc(II). Under hydrothermal conditions, PPAN is hydrolyzed to 2-[3-(pyridin-2-yl)-1H-pyrazol-1-yl]acetate (PPAA−). The structure determination reveals that the complex is a one-dimensional double chain containing cationic [Zn4(PPAA)4]4+structural units, which are further extended by bridging phthalate ligands. The one-dimensional chains are extended into a three-dimensional supramolecular architectureviahydrogen-bonding and π–π stacking interactions.

Syntheses, Crystal Structures and Luminescent Properties of Two Isostructural Fluorinated Metal–organic Frameworks Based on Mixed 2,3,5,6-tetrafluoro-1,4-bis(imidazole-1-yl-methyl)Benzene and Oxalate Ligands

2016 ◽  
Vol 40 (12) ◽  
pp. 763-766
Author(s):  
Sheng-Chun Chen ◽  
Feng Tian ◽  
Ming-Yang He ◽  
Qun Chen
Keyword(s):  
Fluorescence Spectra ◽  
Metal Organic Frameworks ◽  
Luminescent Properties ◽  
Hydrothermal Conditions ◽  
One Dimensional ◽  
Metal Organic ◽  
Solid State Fluorescence ◽  
The One ◽  
Methyl Benzene

Two isostructural fluorinated metal-organic frameworks [M(Fbix)(ox)]n (where M = Zn or Mn, Fbix = 2,3,5,6-tetrafluoro-1,4-bis(imidazole-1-yl-methyl)benzene, ox = oxalate) have been synthesised from Fbix and oxamide under hydrothermal conditions, where oxalate is generated by the in situ hydrolysation of oxamide. The complexes are isostructural and display similar two-dimensional undulating sql nets formed by pillaring the one-dimensional [M(ox)]n chains through Fbix linkers. Their solid-state fluorescence spectra indicate a ligand-based emission for both complexes.

Coordination Polymers with a Bulky Perylene-Based Tetracarboxylate Ligand: Syntheses, Crystal Structures, and Luminescent Properties

2010 ◽  
Vol 63 (3) ◽  
pp. 463 ◽  
Author(s):  
Chun-Sen Liu ◽  
Min Hu ◽  
Song-Tao Ma ◽  
Qiang Zhang ◽  
Li-Ming Zhou ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Three Dimensional ◽  
Luminescent Properties ◽  
Supramolecular Interactions ◽  
Polymeric Chain ◽  
Stacking Interactions ◽  
One Dimensional ◽  
Π Stacking ◽  
Higher Dimensional ◽  
Interchain Interactions

To explore the coordination possibilities of perylene-based ligands with a larger conjugated π-system, four ZnII, MnII, and CoII coordination polymers with perylene-3,4,9,10-tetracarboxylate (ptc) and the chelating 1,10-phenanthroline (phen) ligands were synthesized and characterized: {[Zn2(ptc)(phen)2](H2O)10}∞ (1), {[Zn3(ptc)(OH)2(phen)2](H2O)3}∞ (2), {[Mn(ptc)0.5(phen)(H2O)2](H2O)1.5}∞ (3), and {[Co(ptc)0.5(phen)(H2O)2](H2O)2.5}∞ (4). Structural analysis reveals that complexes 1 and 2 both take one-dimensional polymeric chain structures with dinuclear and trinuclear units as nodes, respectively, which are further extended via the accessorial secondary interchain interactions, such as C–H···O H-bonding or aromatic π···π stacking interactions, to give rise to the relevant higher-dimensional frameworks. Compound 3 has a two-dimensional sheet structure that is further assembled to form a three-dimensional framework by interlayer π···π stacking interactions. Complex 4 is a one-dimensional ribbon-like array structure that is interlinked by the co-effects of intermolecular π···π stacking and C–H···π supramolecular interactions, resulting in a higher-dimensional framework from the different crystallographic directions. Moreover, complexes 1–4 exhibit strong solid-state luminescence emissions at room temperature, which mainly originate from intraligand π→π* transitions of ptc.

scholarly journals (E)-4-Methyl-N′-[(4-oxo-4H-chromen-3-yl)methylidene]benzohydrazide

2014 ◽  
Vol 70 (5) ◽  
pp. o565-o565 ◽  
Author(s):  
Yoshinobu Ishikawa ◽  
Kohzoh Watanabe
Keyword(s):  
Benzene Ring ◽  
Three Dimensional ◽  
Dihedral Angles ◽  
Stacking Interactions ◽  
One Dimensional ◽  
Π Stacking ◽  
Dimensional Network ◽  
Centroid Distance ◽  
Group Centroid ◽  
Centrosymmetric Dimers

In the title chromone-tethered benzohydrazide derivative, C18H14N2O3, the 4H-chromen-4-one and the –CH=N–NH–CO– units are each essentially planar, with the largest deviations from thei planes being 0.052 (2) and 0.003 (2) Å, respectively. The dihedral angles between the 4H-chromen-4-one and the –CH=N–NH–CO– units, the 4H-chromen-4-one unit and the benzene ring of the 4-tolyl group, and the benzene ring of the 4-tolyl group and the –CH=N–NH–CO– unit are 8.09 (7), 9.94 (5) and 17.97 (8)°, respectively. In the crystal, the molecules form two types of centrosymmetric dimers: one by N—H...O hydrogen bonds and the other by π–π stacking interactions between the 4H-chromen-4-one unit and the 4-tolyl group [centroid–centroid distance = 3.641 (5) Å]. These dimers form one-dimensional assemblies extending along thea-axis direction. Additional π–π stacking interactions between two 4H-chromen-4-one units [centroid–centroid distance = 3.591 (5) Å] and two 4-tolyl groups [centroid–centroid distance = 3.792 (5) Å] organize the molecules into a three-dimensional network.

[2,5-Bis(2,2′-bipyridyl-6-yl)-3,4-diazahexa-2,4-diene]dichloridomanganese(II): from a mononuclear compound to a three-dimensional supramolecular framework through C—H...Cl hydrogen bonds and π–π stacking interactions

2014 ◽  
Vol 70 (7) ◽  
pp. 718-721
Author(s):  
Zhengliang Lu ◽  
Yuanchao Zhao ◽  
Baolian Chen ◽  
Ximing Huang ◽  
Chunhua Fan
Keyword(s):  
Hydrogen Bonds ◽  
Three Dimensional ◽  
Stacking Interactions ◽  
Dimensional Chain ◽  
Supramolecular Framework ◽  
One Dimensional ◽  
Pyramidal Geometry ◽  
Π Stacking ◽  
Square Pyramidal Geometry ◽  
Multifunctional Ligand

The title compound, [MnCl2(C24H20N6)], has been synthesized and characterized based on the multifunctional ligand 2,5-bis(2,2′-bipyridyl-6-yl)-3,4-diazahexa-2,4-diene (L). The MnIIcentre is five-coordinate with an approximately square-pyramidal geometry. TheLligand acts as a tridendate chelating ligand. The mononuclear molecules are bridged into a one-dimensional chain by two C—H...Cl hydrogen bonds. These chains are assembled into a two-dimensional layer through π–π stacking interactions between adjacent uncoordinated bipyridyl groups. Furthermore, a three-dimensional supramolecular framework is attained through π–π stacking interactions between adjacent coordinated bipyridyl groups.

Controllable assembly of a three-dimensional metal–organic supramolecular framework including π–π stacking interactions

2012 ◽  
Vol 69 (1) ◽  
pp. 8-10
Author(s):  
Hua Cai ◽  
Ying Guo ◽  
Jian-Gang Li
Keyword(s):  
Three Dimensional ◽  
Mixed Ligand ◽  
Stacking Interactions ◽  
Two Dimensional ◽  
Supramolecular Framework ◽  
Organic Complex ◽  
Π Stacking ◽  
Dimensional Network ◽  
Metal Organic Complex ◽  
Metal Organic

The mixed-ligand metal–organic complex poly[(μ3-phthalato)[μ2-3-(pyridin-2-yl)-1H-pyrazol-1-ido]dicopper(II)], [Cu2(C8H4O4)(C8H6N3)2]n, has been synthesized by the reaction of copper(II) acetate with 2-(1H-pyrazol-3-yl)pyridine (HL) and phthalic acid. The binuclear chelating–bridgingLunits are further linked by bridging phthalate ligands into a two-dimensional network parallel to the (010) plane. The two-dimensional networks are extended into a three-dimensional supramolecular architectureviaπ–π stacking interactions.

Supramolecular networks of 10-(2-hydroxyethyl)acridin-9(10H)-one and 10-(2-chloroethyl)acridin-9(10H)-one

2013 ◽  
Vol 69 (3) ◽  
pp. 289-292
Author(s):  
Chang-Shuai He ◽  
Lu-Fang Liu ◽  
Lei Guo ◽  
Jian-Zhong Wu
Keyword(s):  
Hydrogen Bonding ◽  
Melting Point ◽  
Intermolecular Interactions ◽  
Hydroxy Group ◽  
Three Dimensional ◽  
Stacking Interactions ◽  
Π Stacking ◽  
Chlorine Substituent ◽  
Supramolecular Networks

Both 10-(2-hydroxyethyl)acridin-9(10H)-one, C15H13NO2, and 10-(2-chloroethyl)acridin-9(10H)-one, C15H12ClNO, have monoclinic (P21/c) symmetry and supramolecular three-dimensional networks. But the differences in the intermolecular interactions displayed by the hydroxy group and the chlorine substituent lead to stronger intermolecular π-stacking interactions and hydrogen bonding, and hence a significantly higher melting point for the former.

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.

The three-dimensional hydrogen-bonded structures in the ammonium and sodium salt hydrates of 4-aminophenylarsonic acid

2014 ◽  
Vol 70 (8) ◽  
pp. 738-741 ◽  
Author(s):  
Graham Smith ◽  
Urs D. Wermuth
Keyword(s):  
Hydrogen Bonding ◽  
Sodium Salt ◽  
Three Dimensional ◽  
Three Dimensions ◽  
Dimensional Structure ◽  
Water Molecules ◽  
One Dimensional ◽  
Arsanilic Acid ◽  
Hydrogen Bonding Interactions ◽  
The One

The structures of two hydrated salts of 4-aminophenylarsonic acid (p-arsanilic acid), namely ammonium 4-aminophenylarsonate monohydrate, NH4+·C6H7AsNO3−·H2O, (I), and the one-dimensional coordination polymercatena-poly[[(4-aminophenylarsonato-κO)diaquasodium]-μ-aqua], [Na(C6H7AsNO3)(H2O)3]n, (II), have been determined. In the structure of the ammonium salt, (I), the ammonium cations, arsonate anions and water molecules interact through inter-species N—H...O and arsonate and water O—H...O hydrogen bonds, giving the common two-dimensional layers lying parallel to (010). These layers are extended into three dimensions through bridging hydrogen-bonding interactions involving thepara-amine group acting both as a donor and an acceptor. In the structure of the sodium salt, (II), the Na+cation is coordinated by five O-atom donors, one from a single monodentate arsonate ligand, two from monodentate water molecules and two from bridging water molecules, giving a very distorted square-pyramidal coordination environment. The water bridges generate one-dimensional chains extending alongcand extensive interchain O—H...O and N—H...O hydrogen-bonding interactions link these chains, giving an overall three-dimensional structure. The two structures reported here are the first reported examples of salts ofp-arsanilic acid.

scholarly journals catena-Poly[[diaquabis[1,4-bis(pyridin-4-yl)buta-1,3-diyne-κN]iron(II)]-μ-cyanido-κ2N:C-[dicyanido-κ2C-platinum(II)]-μ-cyanido-κ2C:N]

IUCrData ◽  
2017 ◽  
Vol 2 (10) ◽  
Author(s):  
Lucia Piñeiro-López ◽  
Francisco Javier Valverde-Muñoz ◽  
Maksym Seredyuk ◽  
Kateryna Znovjyak
Keyword(s):  
Molecular Structure ◽  
Hydrogen Bonds ◽  
Bond Length ◽  
Title Compound ◽  
Three Dimensional ◽  
Water Molecules ◽  
Stacking Interactions ◽  
One Dimensional ◽  
Polymeric Chains ◽  
The One

The molecular structure of the title compound, [FePt(CN)4(C14H8N2)2(H2O)2]n, consists of one-dimensional polymeric [–Fe–NC–Pt(CN)2–CN–]∞chains. Two water molecules and two monodentate 1,4-bis(pyridin-4-yl)buta-1,3-diyne (bpb) ligand molecules complete the octahedral coordination sphere of the FeIIatoms. The Fe—N(py) bond length (py is pyridine) is 2.2700 (15) Å, Fe—N(cyanide) is 2.1185 (16) Å and the Fe—O distance is 2.1275 (14) Å. The water molecules are hydrogen bonded to either bpb ligands or cyanide groups of the planar [Pt(CN)4]2−anion of adjacent polymeric chains. These O—H...N hydrogen bonds, in conjunction with offset and tilted π–π stacking interactions between bpb ligands and cyanide groups, extend the one-dimensional chains into a three-dimensional assembly.

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