Formation of hydrogen bond-based 2D two-component supramolecular networks at liquid-solid surface

2018 ◽  
Vol 101 ◽  
pp. 197-200 ◽  
Author(s):  
Wei Li ◽  
Xinli Leng ◽  
Chengyong Xu ◽  
Ning Liu
Keyword(s):  
Hydrogen Bond ◽  
Solid Surface ◽  
Two Component ◽  
Supramolecular Networks

scholarly journals Methyl 1-allyl-4-hydroxy-2,2-dioxo-1H-2λ6,1-benzothiazine-3-carboxylate

2013 ◽  
Vol 69 (11) ◽  
pp. o1698-o1698 ◽  
Author(s):  
Svitlana V. Shishkina ◽  
Igor V. Ukrainets ◽  
Lidiya A. Petrushova
Keyword(s):  
Hydrogen Bond ◽  
Asymmetric Unit ◽  
Torsion Angles ◽  
Compound C ◽  
Two Component ◽  
Independent Molecules ◽  
Population Ratio ◽  
Intramolecular Hydrogen ◽  
Vinyl Group ◽  
Planar Fragment

There are two independent molecules in the asymmetric unit of the title compound, C13H13NO5S, in both of which the ester substituent is nearly coplanar [C—C—C—O torsion angles = 2.7 (7) and −0.8 (7)°] with the planar fragment of the bicycle due to the formation of a strong O—H...O intramolecular hydrogen bond. The vinyl group at the ring N atom is approximately orthogonal to the heterocyclic mean plane [C—N—C—C torsion angles = 103.1 (6) and 98.2 (5)°]. The refinement was performed on a two-component, non-merohedrally twinned crystal [population ratio = 0.483 (3):0.517 (3).

scholarly journals Functional properties ensue from cooperation of different interactions

2014 ◽  
Vol 70 (a1) ◽  
pp. C630-C630
Author(s):  
Giuseppe Resnati ◽  
Pierangelo Metrangolo ◽  
Giancarlo Terraneo ◽  
Gabriella Cavallo
Keyword(s):  
Hydrogen Bond ◽  
Self Assembly ◽  
Halogen Atom ◽  
Crystal Packing ◽  
Halogen Bond ◽  
Decisive Role ◽  
Solid Materials ◽  
Two Component ◽  
Confined Environment ◽  
Specific Profile

According to the definition recommended by IUPAC [1], a halogen bond (XB) occurs when there is evidence of a net attractive interaction between an electrophilic region in a halogen atom and a nucleophilic region in another atom. The halogen bond has many similarities with the hydrogen bond (HB) and here we discuss the specific profile of the two interactions. We also show how the cooperation between the two interactions afford crystalline systems possessing unique and useful properties. For instance, the diiodide, dibromide, and dichloride salts of the 1,6-bis(trimethylammonium)hexane cation (hexamethonium, HMET2+, cation) react with two equivalents of diiodine in a solid-gas reaction and the corresponding bis-trihalides (halogen bonded adducts) are formed [2]. No cavities are present in the starting dihalides and the observed behavior reveals the dynamically porous character of bis(trimethylammonium)alkane dihalides. In the obtained bis-trihalides a net of X-···H-C HBs (X=Cl, Br, I) plays a decisive role in controlling the crystal packing: Four cationic columns embrace an anionic twin column formed by stacking of trihalide dimers. When heated, these bis-trihalides lose one diiodine molecule and the virtually unknown tetrahalide dianions [I4]2-, [I2Br2] 2-, and [I2Cl2]2-are formed. These dianions are the product of the double pinning of a diiodine molecule by two halide anions via strong XBs. The last two tetrahalides were never obtained in solution. The confined environment of dynamically porous materials clearly confers useful synthetic opportunities relative to solution-state processes. Other cases are described wherein XB and HB cooperate in driving self-assembly processes which afford solid materials endowed with useful properties. For instance, we will discuss the formation of two-component supramolecular gels [3] wherein a bis-urea and a diiodoarene self-assemble via cooperative XB and HB.

O–Cu(001): I. BINDING THE SIGNATURES OF LEED, STM AND PES IN A BOND-FORMING WAY

2001 ◽  
Vol 08 (03n04) ◽  
pp. 367-402 ◽  
Author(s):  
CHANG Q. SUN
Keyword(s):  
Hydrogen Bond ◽  
Solid Surface ◽  
Kinetics Of Oxidation ◽  
Bond Forming ◽  
Chemisorbed Oxygen ◽  
Valence Electrons ◽  
Specific Oxidation ◽  
Kinetics Of ◽  
Oxidation Surface ◽  
Bonding Kinetics

This work consists of two sequential parts, which review the advances in uncovering the capacity of VLEED, STM and PES in revealing the nature and kinetics of oxidation bonding and its consequences for the behavior of atoms and valence electrons at a surface; and in quantifying the O–Cu(001) bonding kinetics. The first part describes the model in terms of bond making and its effect on the valence DOS and on the surface potential barrier (SPB) for surfaces with chemisorbed oxygen. One can replace the hydrogen in a H 2 O molecule with an arbitrary less electronegative element and extend the M 2 O to a solid surface with Goldschmidt contraction of the bond length, which formulates a specific oxidation surface with identification of atomic valences and their correpondence to the STM and PES signatures. As consequences of bond making, oxygen derives foou additional DOS features in the valence band and above, i.e. O–M bonding (~ -5 eV), oxygen nonbounding lone pairs (~ - 2 eV), holes (≤ EF ), and antibonding metal dipoles (≥ EF ), in addition to the hydrogen-bond-like formation. The evolution of O -1 to O -2 transforms the CuO 2 pairing off-centered pyramid in the c(2× 2)-2 O -1 into the CU 3 O 2 pairing tetrahedron in the [Formula: see text] phase on the Cu(001) surface. The new decoding technique has enabled the model to be justified and hence the capacity of VLEED, PES and STM to be fully uncovered in determining simultaneously the bond geometry, the SPB, the valence DOS, and their interdependence.

scholarly journals Bis{4-[(2-hydroxy-5-methoxy-3-nitrobenzylidene)amino]phenyl} ether

2020 ◽  
Vol 76 (1) ◽  
pp. 91-94
Author(s):  
Md. Azharul Arafath ◽  
Huey Chong Kwong ◽  
Farook Adam ◽  
Md. Mohiuddin ◽  
Md. Sohug Sarker ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Oxygen Atom ◽  
Dihedral Angle ◽  
Rotational Symmetry ◽  
Compound C ◽  
Two Component ◽  
Benzene Rings ◽  
Central Oxygen ◽  
Phenol Ring

The molecule of the title compound, C28H22N4O9, exhibits crystallographically imposed twofold rotational symmetry, with a dihedral angle of 66.0 (2)° between the planes of the two central benzene rings bounded to the central oxygen atom. The dihedral angle between the planes of the central benzene ring and the terminal phenol ring is 4.9 (2)°. Each half of the molecule exhibits an imine E configuration. An intramolecular O—H...N hydrogen bond is present. In the crystal, the molecules are linked into layers parallel to the ab plane via C—H...O hydrogen bonds. The crystal studied was refined as a two-component pseudomerohedral twin.

Melting and dissolving of a vertical solid surface with laminar compositional convection

2011 ◽  
Vol 687 ◽  
pp. 118-140 ◽  
Author(s):  
Andrew J. Wells ◽  
M. Grae Worster
Keyword(s):  
Solid Surface ◽  
Thermal Transport ◽  
Convective Flow ◽  
Ablation Rate ◽  
Solute Concentration ◽  
Asymptotic Solutions ◽  
Two Component ◽  
Compositional Convection

AbstractWe consider laminar compositional convection of buoyant melt released by ablation of a vertical solid surface into a two-component fluid. Asymptotic solutions are used to describe separate cases: the ablation rate is either controlled by thermal transport, corresponding to melting, or by solutal transport, corresponding to dissolution. Melting is faster and generates a stronger flow than dissolving. We determine the temperature and solute concentration conditions leading to either melting or dissolving and find that these conditions do not vary with the strength of the buoyancy that drives convective flow.

scholarly journals (E)-4-Iodo-2-[(phenylimino)methyl]phenol

IUCrData ◽  
2019 ◽  
Vol 4 (6) ◽  
Author(s):  
G. Swetha ◽  
R. Ida Malarselvi ◽  
C. Ramachandra Raja ◽  
A. Thiruvalluvar ◽  
J. Priscilla
Keyword(s):  
Hydrogen Bond ◽  
Dihedral Angle ◽  
Title Compound ◽  
Molecular Packing ◽  
Π Interactions ◽  
Compound C ◽  
Two Component

The title compound, C13H10INO, is not planar as the dihedral angle between the planes of the two aryl rings is 44.5 (9)°. The configuration about the central C=N bond is E, and there is an intramolecular O—H...N hydrogen bond which generates an S(6) ring. The molecular packing is stabilized by weak C—H...π interactions. The structure was refined as a two-component inversion twin.

A nanodrop on the surface of a lubricating liquid covering a rough solid surface

Nanoscale ◽  
2015 ◽  
Vol 7 (38) ◽  
pp. 15701-15710 ◽  
Author(s):  
Gersh O. Berim ◽  
Eli Ruckenstein
Keyword(s):  
Solid Surface ◽  
Periodic Array ◽  
Test Fluid ◽  
Two Component

A two-component fluid consisting of a lubricating fluid (LF) that covers a rough solid surface (surface decorated by periodic array of identical pillars) and a test fluid (TF) as a nanodrop over LF is considered.

Two threefold Interpenetrating 3D Supramolecular Networks Based on 1D Chains and Hydrogen-bond Interactions

2017 ◽  
Vol 643 (13) ◽  
pp. 864-869
Author(s):  
Ai-Xin Zhu ◽  
Li-Bo Yang ◽  
Xiao-Dan Fang ◽  
Ce Zhang ◽  
Ai-Na Dou ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bond Interactions ◽  
Supramolecular Networks ◽  
1D Chains
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