Results 11 to 20 of about 227,309 (250)

Stacking-induced fluorescence increase reveals allosteric interactions through DNA [PDF]

, 2018
From gene expression to nanotechnology, understanding and controlling DNA requires a detailed knowledge of its higher order structure and dynamics. Here we take advantage of the environment-sensitive photoisomerization of cyanine dyes to probe local and ...
Lopez, Sergio G., Magennis, Steven W., Morten, Michael J., Rafferty, Aidan, Steinmark, I. Emilie   +4 more
core   +1 more source

4-{(E)-[(2-Hydroxynaphthalen-1-yl)methylidene]amino}-1,5-dimethyl-2-phenyl-2,3-dihydro-1H-pyrazol-3-one: a new polymorph (β-phase)

IUCrData, 2017
The title molecule, C22H19N3O2, is a new polymorphic modification, viz. the β-phase; the α-phase has been previously published [Liang & Wang (2010). Acta Cryst. E66, o1968–o1969].
Shaaban K. Mohamed, Joel T. Mague, Mehmet Akkurt, Mustafa R. Albayati, Alaa F. Mohamed   +4 more
doaj   +1 more source

Crystal structure and Hirshfeld surface analysis of (E)-2-(2,4,6-trimethylbenzylidene)-3,4-dihydronaphthalen-1(2H)-one

Acta Crystallographica Section E: Crystallographic Communications, 2019
A novel chalcone, C20H20O, derived from benzylidenetetralone, was synthesized via Claissen–Schmidt condensation between tetralone and 2,4,6-trimethylbenzaldehyde.
Cemile Baydere, Merve Taşçı, Necmi Dege, Mustafa Arslan, Yusuf Atalay, Irina A. Golenya   +5 more
doaj   +1 more source

d8···d10 RhI···AuI Interactions in Rh 2,6-Xylylisocyanide Complexes with [Au(CN)2]: Bond Analysis and Crystal Effects [PDF]

, 2019
Producción CientíficaThe well known [RhL4]n(anion)n structures, with RhI···RhI d8···d8 interactions, are replaced by others with RhI···AuI d8···d10 interactions such as [{RhL4}{Au(CN)2}] (L = 2,6-Xylylisocyanide) or [{RhL4}{Au(CN)2} {RhL4}{Au2(CN)3}·4(
Conejo Rodríguez, Verónica, Espinet Rubio, Pablo, Peñas de Frutos, Marconi Nicolás   +2 more
core   +2 more sources

1-Methyl-3-(2-methylphenyl)-4-phenyl-1H-pyrazolo[3,4-d]pyrimidine

IUCrData, 2017
In the title compound, C19H16N4, the pyrazolopyrimidine unit is slightly twisted. A combination of π-stacking and offset π-stacking interactions forms columns along the b-axis direction.
Mohamed El Hafi, Mohammed Boulhaoua, Youssef Ramli, Mohammed Benchidmi, El Mokhtar Essassi, Joel T. Mague   +5 more
doaj   +1 more source

Influence of perylenediimide–pyrene supramolecular interactions on the stability of DNA-based hybrids: Importance of electrostatic complementarity

Beilstein Journal of Organic Chemistry, 2014
Aromatic π–π stacking interactions are ubiquitous in nature, medicinal chemistry and materials sciences. They play a crucial role in the stacking of nucleobases, thus stabilising the DNA double helix.
Christian B. Winiger, Simon M. Langenegger, Oleg Khorev, Robert Häner   +3 more
doaj   +1 more source

(2RS)-3-(4-Hydroxyphenyl)-2-(1-oxo-1H-2,3-dihydroisoindol-2-yl)propanoic acid monohydrate [PDF]

, 2007
The title compound, C₁₇H₁₅NO₄·H₂O, derived from DL-tyrosine crystallizes as an unusual hydrogen-bonded acid-monohydrate dimer. The asymmetric unit contains two organic molecules and two water molecules.
Brady, Fiona, Gallagher, John F.
core   +1 more source

The Effects of Stacking on the Configurations and Elasticity of Single Stranded Nucleic Acids [PDF]

, 2004
Stacking interactions in single stranded nucleic acids give rise to configurations of an annealed rod-coil multiblock copolymer. Theoretical analysis identifies the resulting signatures for long homopolynucleotides: A non monotonous dependence of size on
A. Buhot, A. Halperin, C. R. Cantor, F. J. Bollum, M. Doi, P. G. de Gennes, T. Godefroy-Colburn, T. M. Birshtein, V. A. Bloomfield   +8 more
core   +1 more source

Structures of S-(pyridin-2-yl) 4-nitrobenzothioate, S-(pyridin-2-yl) 4-methylbenzothioate and S-(pyridin-2-yl) 4-methoxybenzothioate: building blocks for low-symmetry multifunctional tetrapyrroles

Acta Crystallographica Section E: Crystallographic Communications, 2023
The crystal structures of three S-(pyridin-2-yl) benzothioesters with varying para-phenyl substituents are presented, namely, S-(pyridin-2-yl) 4-nitrobenzothioate (1, C12H8N2O3S), S-(pyridin-2-yl) 4-methylbenzothioate (2, C13H11NO2S) and S-(pyridin-2-yl)
Harry C. Sample, Brendan Twamley, Mathias O. Senge   +2 more
doaj   +1 more source

Close-Packing of Clusters: Application to Al_100 [PDF]

, 2003
The lowest energy configurations of close-packed clusters up to N=110 atoms with stacking faults are studied using the Monte Carlo method with Metropolis algorithm. Two types of contact interactions, a pair-potential and a many-atom interaction, are used.
A. Rytkönen, A. Yoshida, C.F. Weizsäcker, C.L. Cleveland, D. Reinhard, F. Baletto, F. Baletto, G. Wulff, H. Häkkinen, H. Häkkinen, H. Häkkinen, J. Akola, J. Akola, J. Akola, J.P. Perdew, J.P. Perdew, J.P.K. Doye, J.P.K. Doye, J.P.K. Doye, J.P.K. Doye, J.P.K. Doye, J.P.K. Doye, J.P.K. Doye, K. Manninen, K. Manninen, L.T. Wille, M. Brack, M. Manninen, M. Manninen, M.R. Hoare, M.W. Finnis, N. Troullier, P. Delaly, R. Leary, R.P. Gupta, S. Ino, S. Valkealahti, S. Valkealahti, S.M. Reimann, T.P. Martin, T.P. Martin, V. Kumar, X. Li, Y. Wang   +43 more
core   +2 more sources