Novel Supramolecular Block Copolymer of Isotactic Polypropylene and Ethylene-co-propylene Connected by Complementary Quadruple Hydrogen Bonding System

2017 ◽  
Vol 50 (15) ◽  
pp. 5687-5694 ◽  
Author(s):  
Saho Nojiri ◽  
Shuichi Kimata ◽  
Kenji Ikeda ◽  
Taichi Senda ◽  
Anton W. Bosman ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Block Copolymer ◽  
Isotactic Polypropylene ◽  
Bonding System ◽  
Hydrogen Bonding System ◽  
Quadruple Hydrogen Bonding

Ethylenediammonium thiophene-2,5-dicarboxylate dihydrate, an acid–base complex with a three-dimensional hydrogen-bonding system

2006 ◽  
Vol 62 (7) ◽  
pp. o2951-o2952 ◽  
Author(s):  
Si-Min Wu ◽  
Ming Li ◽  
Jiang-Feng Xiang ◽  
Liang-Jie Yuan ◽  
Ju-Tang Sun
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Three Dimensional ◽  
Water Molecules ◽  
Inversion Center ◽  
Acid Base ◽  
Special Position ◽  
Compound C ◽  
Bonding System ◽  
Hydrogen Bonding System

The crystal structure of the title compound, C2H10N2 2+·C6H2O4S2−·2H2O, is built of ethylenediammonium dications, occupying a special position on an inversion center, thiophene-2,5-dicarboxylate dianions, in a special position on the twofold axis, and water molecules in general positions. All residues are involved in an extensive hydrogen-bonding system, which links them into a three-dimensional supramolecular arrangement.

Structure of Hydrated Copper(II) Colchiceine

1999 ◽  
Vol 52 (4) ◽  
pp. 333 ◽  
Author(s):  
Maureen F. Mackay ◽  
Robert W. Gable ◽  
James D. Morrison ◽  
Lothar O. Satzke
Keyword(s):  
Hydrogen Bonding ◽  
Copper Atom ◽  
Three Dimensional ◽  
Water Molecules ◽  
R Factor ◽  
Bonding System ◽  
Dimensional Network ◽  
Square Planar ◽  
Hydrogen Bonding System ◽  
C 50

Hydrated crystals of copper(II) colchiceine belong to the tetragonal space group P 432I2 with a 13·415(1), c 50·169(8) Å and Z 8. The structure has been refined to a conventional R factor of 0·077 for 4560 observed data. The tropolonic oxygens from two colchiceine molecules are coordinated to the copper atom in this bis-chelated complex to form a square planar arrangement. The sites of three of the waters are clearly defined, but the others are disordered over seven partially occupied sites. An intricate hydrogen-bonding system links the complex and water molecules into a three-dimensional network in the crystal.

The impact on the ring related vibrational frequencies of pyridine of hydrogen bonds with haloforms – a topology perspective

2019 ◽  
Vol 21 (4) ◽  
pp. 1724-1736 ◽  
Author(s):  
Enrico Benassi ◽  
Kamila Akhmetova ◽  
Haiyan Fan
Keyword(s):  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Ring Structure ◽  
Vibrational Frequencies ◽  
Bonding System ◽  
Hydrogen Bonding System ◽  
The Impact

An intermolecular ring structure is identified for the hydrogen bonding system of pyridine and haloforms.

A correlation study between hydrogen-bonded network and gelation ability of three galactose derivatives

CrystEngComm ◽  
2015 ◽  
Vol 17 (17) ◽  
pp. 3345-3353 ◽  
Author(s):  
Somnath Mukherjee ◽  
G. Rama Krishna ◽  
Balaram Mukhopadhyay ◽  
C. Malla Reddy
Keyword(s):  
Hydrogen Bonding ◽  
Correlation Study ◽  
Bonding System ◽  
Hydrogen Bonding System ◽  
Hydrogen Bonding Network ◽  
Hydrogen Bonded

The hydrogen bonding network in the crystals of the three saccharides was correlated with their gelling ability or inability, and unexpectedly, a 2D hydrogen-bonded system was found to show efficient gelation, whereas a 1D hydrogen bonding system was a nongelator.

Theoretical exploration of the cooperative effect in NMF–NMF–amino acid residue hydrogen bonding system

2008 ◽  
Vol 10 (36) ◽  
pp. 5607 ◽  
Author(s):  
Xichen Li ◽  
Wenlan Liu ◽  
Kening Sun ◽  
Yan Wang ◽  
Hongwei Tan ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Amino Acid ◽  
Amino Acid Residue ◽  
Cooperative Effect ◽  
Bonding System ◽  
Hydrogen Bonding System

scholarly journals The effect of hydrogen bonding on the conformations of 2-(1H-indol-3-yl)-2-oxoacetamide and 2-(1H-indol-3-yl)-N,N-dimethyl-2-oxoacetamide

2012 ◽  
Vol 68 (10) ◽  
pp. o405-o407 ◽  
Author(s):  
Vijayakumar N. Sonar ◽  
Sean Parkin ◽  
Peter A. Crooks
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Three Dimensional ◽  
Carbonyl Groups ◽  
Single Bond ◽  
Torsion Angles ◽  
Bonding System ◽  
Dimensional Network ◽  
Hydrogen Bonding System

In the title compounds, C10H8N2O2, (I), and C12H12N2O2, (II), the two carbonyl groups are oriented with torsion angles of −149.3 (3) and −88.55 (15)°, respectively. The single-bond distances linking the two carbonyl groups are 1.528 (4) and 1.5298 (17) Å, respectively. In (I), the molecules are linked by an elaborate system of N—H...O hydrogen bonds, which form adjacentR22(8) andR42(8) ring motifs to generate a ladder-like construct. Adjacent ladders are further linked by N—H...O hydrogen bonds to build a three-dimensional network. The hydrogen bonding in (II) is far simpler, consisting of helical chains of N—H...O-linked molecules that follow the 21screw of thebaxis. It is the presence of an elaborate hydrogen-bonding system in the crystal structure of (I) that leads to the different torsion angle for the orientation of the two adjacent carbonyl groups from that in (II).

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