Results 11 to 20 of about 78,220 (312)

Intramolecular halogen–halogen bonds?

Physical Chemistry Chemical Physics, 2013
By analysing the properties of the electron density in the structurally simple perhalogenated ethanes, X3C-CY3 (X, Y = F, Cl), a previously overlooked non-covalent attraction between halogens attached to opposite carbon atoms is found. Quantum chemical calculations extrapolated towards the full solution of the Schrödinger equation reveal the complex ...
Johansson, Mikael P., Swart, Marcel
openaire   +5 more sources

The Effect of the Position of the Pyridine Nitrogen Atom in the Tridentate NN'O Schiff Base Ligand on the Type of Coordination Polymer of the Copper(II) Complex: A Crystallographic Study [PDF]

شیمی کاربردی روز
Coordination polymers (CPs) are synthesized using bridging organic ligands and metal ions, depending on the geometric coordination of the metal, the bridging ligands, and the donor atoms present in these ligands, various one-, two-, or three-dimensional ...
Kimia Forooghi, Hadi Amiri Rudbari, Reza Azadbakht   +2 more
doaj   +1 more source

The Halogen Effect on the Magnetic Behaviour of Dimethylformamide Solvates in [Fe(halide-salEen)₂]BPh₄

Magnetochemistry, 2022
Complexes [Fe(X-salEen)2]BPh4·DMF, with X = Br (1), Cl (2), and F (3), were crystallised from N,N′-dimethylformamide with the aim of understanding the role of a high boiling point N,N′-dimethylformamide solvate in the spin crossover phenomenon.
Rafaela T. Marques, Frederico F. Martins, Deniz F. Bekiş, Ana I. Vicente, Liliana P. Ferreira, Clara S. B. Gomes, Sónia Barroso, Varun Kumar, Yann Garcia, Nuno A. G. Bandeira, Maria José Calhorda, Paulo N. Martinho   +11 more
doaj   +1 more source

Halogen⋯halogen contra C–H⋯halogen interactions

CrystEngComm, 2014
Pressure affects the competition between C–H⋯X hydrogen bonds and X⋯X halogen⋯halogen interactions. In bromomethane, CH3Br, pressure changes the molecular arrangement of the two solid-state phases of this compound: low-pressure phase α is dominated by halogen⋯halogen interactions, whereas above 1.5 GPa the β phase is governed by C–H⋯halogen bonds.
Marcin Podsiadło, Anna Olejniczak, Andrzej Katrusiak   +2 more
openaire   +2 more sources

Matrix‐free room‐temperature phosphorescence graphitic carbon nitride quantum dots based on halogen bond interactions for security applications

Nano Select, 2022
Herein, we first designed a one‐step strategy to achieve matrix‐free room temperature phosphorescence (RTP) materials by low temperature solid phase synthesis, using sodium citrate as carbon source and urea as nitrogen source.
Yuelin Kong, Yu He, Yaping Wang, Gongwu Song   +3 more
doaj   +1 more source

Discomfort Glare Perception by Drivers—Establishing a Link between Subjective and Psychophysiological Assessment

Applied Sciences, 2022
The broad application of LEDs for automotive lighting purposes, together with new discoveries in vision physiology, is creating new challenges in the field of glare perception.
Ladislav Stanke, Lucie Viktorová, Tomáš Dominik   +2 more
doaj   +1 more source

Crystal structures of bis(phenoxy)silicon phthalocyanines: increasing π–π interactions, solubility and disorder and no halogen bonding observed

Acta Crystallographica Section E: Crystallographic Communications, 2016
We report the syntheses and characterization of three solution-processable phenoxy silicon phthalocyanines (SiPcs), namely bis(3-methylphenoxy)(phthalocyanine)silicon [(3MP)2-SiPc], C46H30N8O2Si, bis(2-sec-butylphenoxy)(phthalocyanine)silicon [(2secBP)2 ...
Benoît H. Lessard, Alan J. Lough, Timothy P. Bender   +2 more
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A Halogen-Containing Stilbene Derivative from the Leaves of Cajanus cajan that Induces Osteogenic Differentiation of Human Mesenchymal Stem Cells

Molecules, 2015
A new natural halogen-containing stilbene derivative was isolated from the leaves of Cajanus cajan (L.) Millsp. and identified as 3-O-(3-chloro-2-hydroxyl-propanyl)-longistylin A by comprehensive spectroscopic and chemical analysis, and named ...
Jia-Zhong Cai, Rong Tang, Gui-Fu Ye, Sheng-Xiang Qiu, Nen-Ling Zhang, Ying-Jie Hu, Xiao-Ling Shen   +6 more
doaj   +1 more source

Luminescent halogen clusters

Cell Reports Physical Science, 2022
Summary: Halogen···halogen (X···X) short contacts, especially halogen bonds (XBs), have been widely used in multifarious fields because of their bridging function among luminophores, as well as their well-known heavy atom effect.
Zihao Zhao, Huili Ma, Saixing Tang, Yuxuan Li, Siyu Tao, Tianjia Yang, Anqi Lv, Wang Zhang Yuan   +7 more
doaj   +1 more source

Complementary, Cooperative Ditopic Halogen Bonding and Electron Donor-Acceptor π-π Complexation in the Formation of Cocrystals

Molecules, 2022
This study expands and combines concepts from two of our earlier studies. One study reported the complementary halogen bonding and π-π charge transfer complexation observed between isomeric electron rich 4-N,N-dimethylaminophenylethynylpyridines and the ...
Erin D. Speetzen, Chideraa I. Nwachukwu, Nathan P. Bowling, Eric Bosch   +3 more
doaj   +1 more source