Synthesis, properties, and OLED characteristics of 2,2′-bipyridine-based electron-transport materials: the synergistic effect of molecular shape anisotropy and a weak hydrogen-bonding network on molecular orientation

2016 ◽  
Vol 4 (17) ◽  
pp. 3699-3704 ◽  
Author(s):  
Yuichiro Watanabe ◽  
Hisahiro Sasabe ◽  
Daisuke Yokoyama ◽  
Teruo Beppu ◽  
Hiroshi Katagiri ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Electron Transport ◽  
Hydrogen Bonds ◽  
Synergistic Effect ◽  
Molecular Orientation ◽  
Molecular Shape ◽  
Shape Anisotropy ◽  
Intermolecular Hydrogen Bonds ◽  
Synthesis Properties ◽  
Hydrogen Bonding Network

We investigated the synergistic effect of molecular shape anisotropy and intermolecular hydrogen-bonds in the BPy derivatives on molecular orientation towards OLEDs.

A 16-connected three-dimensional hydrogen-bonding network in tetrakis(4-aminopyridinium) perylene-3,4,9,10-tetracarboxylate octahydrate

2014 ◽  
Vol 70 (7) ◽  
pp. 668-671 ◽  
Author(s):  
Zhi-Hui Zhang ◽  
Jin-Long Wang ◽  
Ning Gao ◽  
Ming-Yang He
Keyword(s):  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Linear Chain ◽  
Three Dimensional ◽  
Organic Salt ◽  
Water Molecules ◽  
The Novel ◽  
One Dimensional ◽  
Connected Node ◽  
Hydrogen Bonding Network

The novel title organic salt, 4C5H7N2+·C24H8O84−·8H2O, was obtained from the reaction of perylene-3,4,9,10-tetracarboxylic acid (H4ptca) with 4-aminopyridine (4-ap). The asymmetric unit contains half a perylene-3,4,9,10-tetracarboxylate (ptca4−) anion with twofold symmetry, two 4-aminopyridinium (4-Hap+) cations and four water molecules. Strong N—H...O hydrogen bonds connect each ptca4−anion with four 4-Hap+cations to form a one-dimensional linear chain along the [010] direction, decorated by additional 4-Hap+cations attached by weak N—H...O hydrogen bonds to the ptca4−anions. Intermolecular O—H...O interactions of water molecules with ptca4−and 4-Hap+ions complete the three-dimensional hydrogen-bonding network. From the viewpoint of topology, each ptca4−anion acts as a 16-connected node by hydrogen bonding to six 4-Hap+cations and ten water molecules to yield a highly connected hydrogen-bonding framework. π–π interactions between 4-Hap+cations, and between 4-Hap+cations and ptca4−anions, further stabilize the three-dimensional hydrogen-bonding network.

A recyclable hydroxyl functionalized polyindole hydrogel for sodium hydroxide extraction via the synergistic effect of cation–π interactions and hydrogen bonding

2018 ◽  
Vol 54 (70) ◽  
pp. 9785-9788 ◽  
Author(s):  
Guanjun Chang ◽  
Yan Wang ◽  
Cheng Wang ◽  
Yannan Li ◽  
Yewei Xu ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Synergistic Effect ◽  
Sodium Hydroxide ◽  
Π Interactions ◽  
Extraction Behavior ◽  
Highly Effective ◽  
New Type

We have successfully constructed a new type of recyclable indole-based hydrogel, which exhibited highly effective extraction behavior for hydroxide via the synergistic effect of cation–π interactions and hydrogen bonds.

scholarly journals Crystal structure of pentakis(ethylenediamine-κ2N,N′)lanthanum(III) trichloride–ethylenediamine–dichloromethane (1/1/1)

2014 ◽  
Vol 70 (11) ◽  
pp. 424-426 ◽  
Author(s):  
Hope T. Sartain ◽  
Richard J. Staples ◽  
Shannon M. Biros
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Electron Density ◽  
Inversion Center ◽  
Asymmetric Unit ◽  
Acta Cryst ◽  
Bypass Procedure ◽  
Hydrogen Bonding Network ◽  
Additional Hydrogen

We report here the crystal structure of a ten-coordinate lanthanum(III) metal coordinated by five bidentate ethylenediamine ligands, [La(C2H8N2)5]Cl3·C2H8N2·CH2Cl2. One free ethylenediamine molecule and three Cl−anions are also located in the asymmetric unit. The overall structure is held together by an extensive hydrogen-bonding network between the Cl−anions and the NH groups on the metal-bound ethylenediamine ligands. The free ethylenediamine molecule is held in an ordered position by additional hydrogen bonds involving both the chlorides and –NH groups on the metal-bound ligands. One highly disordered molecule of dichloromethane is located on an inversion center; however, all attempts to model this disorder were unsuccessful. The electron density in this space was removed using the BYPASS procedure [van der Sluis & Spek (1990).Acta Cryst.A46, 194–201].

Unravelling hydrogen bonding interactions of tryptamine–water dimer from neutral to cation

2017 ◽  
Vol 19 (37) ◽  
pp. 25260-25269 ◽  
Author(s):  
Zongyuan Liu ◽  
Carl O. Trindle ◽  
Quanli Gu ◽  
Wei Wu ◽  
Peifeng Su
Keyword(s):  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Water Dimer ◽  
Physical Origin ◽  
Intermolecular Hydrogen Bonds ◽  
Hydrogen Bonding Interactions

The physical origin for the three intermolecular hydrogen bonds in the neutral and cationic forms of the tryptamine–water dimer is explored.

scholarly journals The crystal structures of two novel polymorphs of bis(oxonium) ethane-1,2-disulfonate

2019 ◽  
Vol 75 (11) ◽  
pp. 1586-1589
Author(s):  
Jaroslaw Mazurek ◽  
Ana Fernandez-Casares
Keyword(s):  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Crystal Structures ◽  
The Other ◽  
Acta Cryst ◽  
Crystal Forms ◽  
Crystal Density ◽  
Hydrogen Bonding Network

Two novel crystal forms of bis(oxonium) ethane-1,2-disulfonate, 2H3O−·C2H4O6S2 2−, are reported. Polymorph II has monoclinic (P21/n) symmetry, while the symmetry of form III is triclinic (P\overline{1}). Both structures display extensive networks of O—H...O hydrogen bonds. While this network in Form II is similar to that observed for the previously reported Form I [Mootz & Wunderlich (1970). Acta Cryst. B26, 1820–1825; Sartori et al. (1994). Z. Naturforsch. 49, 1467–1472] and extends in all directions, in Form III it differs significantly, forming layers parallel to the ab plane. The sulfonate molecule in all three forms adopts a nearly identical geometry. The other observed differences between the forms, apart from the hydrogen-bonding network, are observed in the crystal density and packing index.

A Comparison of the Enamino Carbonyl Conjugation Efficiency for Hydrogen Bonding Formation in Pyridone and Dihydropyridone Systems

2000 ◽  
Vol 55 (1) ◽  
pp. 5-11 ◽  
Author(s):  
Teresa Borowiak ◽  
Irena Wolska ◽  
Artur Korzański ◽  
Wolfgang Milius ◽  
Wolfgang Schnick ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Crystal Structures ◽  
Steric Hindrance ◽  
Crystal Packing ◽  
Intermolecular Hydrogen Bond ◽  
Asymmetric Unit ◽  
Intermolecular Hydrogen Bonds

The crystal structures of two compounds containing enaminone heterodiene systems and forming intermolecular hydrogen bonds N-H·O are reported: 1) 3-ethoxycarbonyl-2-methyl-4-pyridone (hereafter ETPY) and 2) 3-ethoxycarbonyl-2-phenyl-6-methoxycarbonyl-5,6-di-hydro-4-pyridone (hereafter EPPY). The crystal packing is controlled by intermolecular hydro­ gen bonds N-H·O = C connecting the heteroconjugated enaminone groups in infinite chains. In ETPY crystals the intermolecular hydrogen bond involves the heterodienic pathway with the highest π-delocalization that is effective for a very short N·O distance of 2.701(9) Å (average from two molecules in the asymmetric unit). Probably due to the steric hindrance, the hydrogen bond in EPPY is formed following the heterodienic pathway that involves the ester C = O group, although π-delocalization along this pathway is less than that along the pyridone-part pathway resulting in a longer N·O distance of 2.886(3) Å

scholarly journals CRYSTAL STRUCTURES OF TWO PHOSPHONATE SALTS: MONOCYCLOHEXYLAMMONIUM HYDROGEN PHOSPHONATE AND MONOCYCLOHEXYLAMMONIUM PHENYL PHOSPHONATE

2020 ◽  
Vol 26 (2) ◽  
pp. 50-56
Author(s):  
MODOU SARR ◽  
MOUHAMADOU BIRAME DIOP ◽  
MOUHAMADOU SEMBENE BOYE ◽  
AMINATA DIASSE-SARR ◽  
PHILIPPE GUIONNEAU
Keyword(s):  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Crystal Structures ◽  
Layered Structure ◽  
Hydrogen Bonding Network

Hydrogen phosphonate anions and monocyclohexylammonium cations interacting through hydrogen bonds conduct to the formation of a salt namely monocyclohexylammonium hydrogen phosphonate. In this structure, hydrogen phosphonate anions are linked by pairs through O—H···O hydrogen bonds leading to anionic dimers. Each dimer is connected to its two neighbours through cations via N—H···O hydrogen bonds leading to infinite chains which are then connected by N—H···O hydrogen bonds giving rise to a layered structure. The phenyl phosphonates form dimers that are connected through an expended hydrogen bonding network involving the cations into a layer.

scholarly journals Crystal structure ofcatena-poly[[[triaquastrontium]-di-μ2-glycinato] dibromide]

2015 ◽  
Vol 71 (7) ◽  
pp. 875-878 ◽  
Author(s):  
Palanisamy Revathi ◽  
Thangavelu Balakrishnan ◽  
Kandasamy Ramamurthi ◽  
Subbiah Thamotharan
Keyword(s):  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Alkaline Earth ◽  
Three Dimensional ◽  
Water Molecules ◽  
Intermolecular Hydrogen Bonds ◽  
Rotation Axes ◽  
Hydrogen Bonding Interactions ◽  
Carboxylate Groups ◽  
Glycine Molecule

In the title coordination polymer, {[Sr(C2H5NO2)2(H2O)3]Br2}n, the Sr2+ion and one of the water molecules are located on twofold rotation axes. The alkaline earth ion is nine-coordinated by three water O atoms and six O atoms of the carboxylate groups of four glycine ligands, two in a chelating mode and two in a monodentate mode. The glycine molecule exists in a zwitterionic form and bridges the cations into chains parallel to [001]. The Br−counter-anions are located between the chains. Intermolecular hydrogen bonds are formed between the amino and carboxylate groups of neighbouring glycine ligands, generating a head-to-tail sequence. Adjacent head-to-tail sequences are further interconnected by intermolecular N—H...Br hydrogen-bonding interactions into sheets parallel to (100). O—H...Br and O—H...O hydrogen bonds involving the coordinating water molecules are also present, consolidating the three-dimensional hydrogen-bonding network.

Hydrogen bonding in polyamino-polyalcohols: a monohydrated cocrystal of 1,3-diamino-5-azaniumyl-1,3,5-trideoxy-cis-inositol iodide and 1,3,5-triamino-1,3,5-trideoxy-cis-inositol

2014 ◽  
Vol 70 (4) ◽  
pp. 396-399 ◽  
Author(s):  
Christian Neis ◽  
Kaspar Hegetschweiler
Keyword(s):  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Three Dimensional ◽  
Chair Conformation ◽  
Structural Motif ◽  
Water Molecules ◽  
Intermolecular Hydrogen Bonds ◽  
Solvent Water ◽  
Entire Structure ◽  
Dimensional Network

In the title monohydrated cocrystal, namely 1,3-diamino-5-azaniumyl-1,3,5-trideoxy-cis-inositol iodide–1,3,5-triamino-1,3,5-trideoxy-cis-inositol–water (1/1/1), C6H16N3O3+·I−·C6H15N3O3·H2O, the neutral 1,3,5-triamino-1,3,5-trideoxy-cis-inositol (taci) molecule and the monoprotonated 1,3-diamino-5-azaniumyl-1,3,5-trideoxy-cis-inositol cation (Htaci+) both adopt a chair conformation, with the three O atoms in axial and the three N atoms in equatorial positions. The cation, but not the neutral taci unit, exhibits intramolecular O—H...O hydrogen bonding. The entire structure is stabilized by a complex three-dimensional network of intermolecular hydrogen bonds. The neutral taci entities and the Htaci+cations are each aligned into chains along [001]. In these chains, two O—H...N interactions generate a ten-membered ring as the predominant structural motif. The rings consist of vicinal 2-amino-1-hydroxyethylene units of neighbouring molecules, which are pairedviacentres of inversion. The chains are interconnected into undulating layers parallel to theacplane, and the layers are further held together by O—H...N hydrogen bonds and additional interactions with the iodide counter-anions and solvent water molecules.

Hydrogen Bonding of two l-(φ-Ammonioalkyl)-2-acyl-cyclopentadienides in the Solid State

2000 ◽  
Vol 55 (6) ◽  
pp. 541-545 ◽  
Author(s):  
Andreas Müller ◽  
Gerhard Maas
Keyword(s):  
Hydrogen Bonding ◽  
Solid State ◽  
Hydrogen Bonds ◽  
Two Dimensional ◽  
Intermolecular Hydrogen Bonds ◽  
Dimensional Network ◽  
Solid State Structures ◽  
Centrosymmetric Dimers

The solid-state structures of a l-(φ-ammoniopropyl)-2-(2-thienylcarbonyl)-cyclopentadienide (2) and a l-(φ-ammoniopentyl)-2-(4-methoxybenzoyl)-cyclopentadienide (3) have been determined. Both betaines self-assemble by NH ··· O hydrogen bonds, but the motifs are different. In the ammoniopropyl case, both intramolecular and intermolecular hydrogen bonds of this type exist, the latter bond being responsible for the formation of infinite chains. In the ammoniopentyl case, intermolecular hydrogen bonds build up a two-dimensional network which contains centrosymmetric dimers held together by NH ··· O=C-aryl hydrogen bonds.

Sign in / Sign up

Export Citation Format

Share Document