New supramolecular organization for a glycoluril: chiral hydrogen-bonded ribbons

2002 ◽  
pp. 2228 ◽  
Author(s):  
Darren W. Johnson ◽  
Liam C. Palmer ◽  
Fraser Hof ◽  
Peter M. Iovine ◽  
Julius Rebek
Keyword(s):  
Supramolecular Organization ◽  
Hydrogen Bonded

Peculiarities of supramolecular organization of cyclic ketones with vinylacetylene fragments

2018 ◽  
Vol 74 (12) ◽  
pp. 1674-1683 ◽  
Author(s):  
Eugenia D. Voronova ◽  
Alexander A. Golovanov ◽  
Ivan S. Odin ◽  
Maksim A. Anisimov ◽  
Pavel V. Dorovatovskii ◽  
...  
Keyword(s):  
Phenyl Ring ◽  
Supramolecular Organization ◽  
Supramolecular Architecture ◽  
X Ray Diffraction ◽  
Cyclic Ketones ◽  
X Ray ◽  
Space Groups ◽  
Full Interaction ◽  
Interaction Map ◽  
Hydrogen Bonded

1,5-Diaryl(heteroaryl)pentenynones show a tendency to crystallize in acentric space groups due to their inclination to form C—H...O hydrogen-bonded chains instead of dimers and thus exhibit nonlinear optical properties. A series of symmetrical α,α′-bis(3-arylprop-2-yn-1-ylidene)cycloalkanones and unsymmetrical α-(furan-2-ylmethylene)-α′-(3-arylprop-2-yn-1-ylidene)cyclohexanones closely related to pentenynones was synthesized, namely 2,5-bis(3-phenylprop-2-yn-1-ylidene)cyclopentanone, C23H16O, 2,5-bis[3-(4-bromophenyl)prop-2-yn-1-ylidene]cyclopentanone, C23H14Br2O, 2,6-bis(3-phenylprop-2-yn-1-ylidene)cyclohexanone, C24H18O, 2,6-bis[3-(4-bromophenyl)prop-2-yn-1-ylidene]cyclohexanone, C24H16Br2O, 4-tert-butyl-2,6-bis(3-phenylprop-2-yn-1-ylidene)cyclohexanone, C28H25O, 4-tert-butyl-2,6-bis[3-(4-methylphenyl)prop-2-yn-1-ylidene]cyclohexanone, C30H30O, 2-(furan-2-ylmethylene)-6-(3-phenylprop-2-yn-1-ylidene)cyclohexanone, C20H16O2, and 6-(3-butylprop-2-yn-1-ylidene)-2-(furan-2-ylmethylene)cyclohexanone, C10H20O2, and investigated by means of X-ray diffraction to understand peculiarities of their supramolecular organization. Four of the eight novel compounds crystallize in acentric space groups. Three of these four compounds contain substituents at the para position of the phenyl ring, which affect the charge density on the H(CPh) atoms and thus stabilize CPh—H...O interactions. The fourth compound realizes the C—H...O hydrogen bonding via H atoms of the furyl ring. The applicability and shortcomings of the Full Interaction Map tool to predict the likelihood of C—H...O and C—H...Br hydrogen-bonded motifs, and the effect of substituents on the phenyl ring on the supramolecular architecture are discussed.

Helical supramolecular organization of a 1,2-diol appended naphthalene diimide organogelator via an extended intermolecular H-bonding network

RSC Advances ◽  
2016 ◽  
Vol 6 (36) ◽  
pp. 30690-30694 ◽  
Author(s):  
Sopan Valiba Shinde ◽  
Mandar Kulkarni ◽  
Pinaki Talukdar
Keyword(s):  
Self Assembly ◽  
Sol Gel ◽  
Supramolecular Organization ◽  
Naphthalene Diimide ◽  
Hydrogen Bonded

Hydrogen bonded self-assembly of a 1,2-diol linked naphthalene diimide derivative features M-helical and J-type aggregation. In MCH/CHCl3, the compound exhibits intense yellow excimer and thermoreversible “sol–gel” behavior.

Hydrogen-Bonded Dimeric Synthon of Fluoro-Substituted Phenylboronic Acids versus Supramolecular Organization in Crystals

2014 ◽  
Vol 14 (11) ◽  
pp. 5912-5921 ◽  
Author(s):  
Izabela D. Madura ◽  
Karolina Czerwińska ◽  
Dominika Sołdańska
Keyword(s):  
Supramolecular Organization ◽  
Phenylboronic Acids ◽  
Hydrogen Bonded

Specific Labeling of Protein Domains with Antibody Fragments

1981 ◽  
Vol 39 ◽  
pp. 416-417
Author(s):  
U. Aebi ◽  
L.E. Buhle ◽  
W.E. Fowler
Keyword(s):  
Image Processing ◽  
Specific Protein ◽  
Antibody Fragments ◽  
Supramolecular Organization ◽  
Two Dimensional ◽  
Ordered Structures ◽  
Virus Capsids ◽  
Processing Techniques

Many important supramolecular structures such as filaments, microtubules, virus capsids and certain membrane proteins and bacterial cell walls exist as ordered polymers or two-dimensional crystalline arrays in vivo. In several instances it has been possible to induce soluble proteins to form ordered polymers or two-dimensional crystalline arrays in vitro. In both cases a combination of electron microscopy of negatively stained specimens with analog or digital image processing techniques has proven extremely useful for elucidating the molecular and supramolecular organization of the constituent proteins. However from the reconstructed stain exclusion patterns it is often difficult to identify distinct stain excluding regions with specific protein subunits. To this end it has been demonstrated that in some cases this ambiguity can be resolved by a combination of stoichiometric labeling of the ordered structures with subunit-specific antibody fragments (e.g. Fab) and image processing of the electron micrographs recorded from labeled and unlabeled structures.

An Unnatural Amino Acid that Mimics a Tripeptide β-Strand and Forms β-Sheetlike Hydrogen-Bonded Dimers [J. Am. Chem. Soc.2000,122, 7654-7661]. 

2001 ◽  
Vol 123 (7) ◽  
pp. 1545-1546
Author(s):  
James S. Nowick ◽  
De Michael Chung ◽  
Kalyani Maitra ◽  
Santanu Maitra ◽  
Kimberly D. Stigers ◽  
...  
Keyword(s):  
Amino Acid ◽  
Unnatural Amino Acid ◽  
Hydrogen Bonded

Organic Ferromagnets. Hydrogen Bonded Supramolecular Magnetic Organizations Derived from Hydroxylated Phenyl ?-Nitronyl Nitroxide Radicals

1996 ◽  
Vol 6 (12) ◽  
pp. 1967-1986 ◽  
Author(s):  
J. Veciana ◽  
J. Cirujeda ◽  
C. Rovira ◽  
E. Molins ◽  
J. J. Novoa
Keyword(s):  
Nitronyl Nitroxide ◽  
Nitroxide Radicals ◽  
Organic Ferromagnets ◽  
Hydrogen Bonded

A study of thermal motion in hydrogen-bonded crystals

1959 ◽  
Vol 112 (1-6) ◽  
pp. 68-79 ◽  
Author(s):  
J. Monteath Robertson
Keyword(s):  
Thermal Motion ◽  
Hydrogen Bonded

Hydrogen-Bonded Solvent Systems

1969 ◽  
Vol 67 (1_3) ◽  
pp. 168-168
Author(s):  
H. G. Hertz
Keyword(s):  
Solvent Systems ◽  
Hydrogen Bonded

Energy Dissipation Processes of Singlet Excited 1-Hydroxyfluorenone and its Hydrogen-Bonded Complex with N-Methylimidazole

2004 ◽  
Author(s):  
Krisztina Sebők-Nagy ◽  
László Biczók ◽  
Akimitsu Morimoto ◽  
Tetsuya Shimada ◽  
Haruo Inoue
Keyword(s):  
Energy Dissipation ◽  
Dissipation Processes ◽  
Hydrogen Bonded
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