Results 51 to 60 of about 3,726 (222)

Transition metal-free oxidative and deoxygenative C–H/C–Li cross-couplings of 2H-imidazole 1-oxides with carboranyl lithium as an efficient synthetic approach to azaheterocyclic carboranes

Beilstein Journal of Organic Chemistry, 2018
The direct C–H functionalization methodology has first been applied to perform transition metal-free C–H/C–Li cross-couplings of 2H-imidazole 1-oxides with carboranyllithium.
Lidia A. Smyshliaeva, Mikhail V. Varaksin, Pavel A. Slepukhin, Oleg N. Chupakhin, Valery N. Charushin   +4 more
doaj   +1 more source

Unexpected photochemistry and charge-transfer complexes of [CB11H12]2 carborane [PDF]

, 2008
Although the [CB11H12]¯carborane does not exhibit an absorption band inUV, its triplet excited state can be generated upon 308 nm laser excitation; also unexpectedly carborane acts as electron donor forming a charge transfer complex with methylviologen ...
Alvaro, Avelino Corma, Francesc X. Llabrés i Xamena, Grimes, Hawthorne, Hermenegildo García, Jelliss, Juhasz, Kavarnos, Korbe, Laura Teruel, María S. Galletero, McKee, Reed, Reed, Stoyanov, Stoyanov, Yoon   +17 more
core   +2 more sources

The Far Side of Carboranes: Anticancer Active Monocations and Ambiently Stable Dications

Angewandte Chemie, Volume 138, Issue 20, 11 May 2026.
This work describes the synthesis of bench‐stable dicationic carboranes. Their enhanced electrophilicity is documented by opening the clusters with weak nucleophiles or dihydrogen. The surprising stability of positively charged carboranes in water enabled a study of their in vitro antiproliferative activity, which surpassed the effects of doxorubicin ...
Vlastimil Němec, Josef Holub, Maksim A. Samsonov, Zdeňka Růžičková, Josef Cvačka, Ján Vančo, Zdeněk Trávníček, Jan Belza, Zdeněk Dvořák, Jan Vrána, Aleš Růžička   +10 more
wiley   +2 more sources

Synthesis of Carboranyl-Containing β-Arylaliphatic Acids for Potential Application in BNCT

Molecules
One of the promising research areas involving carborane derivatives is boron neutron capture therapy (BNCT). Due to the high boron atom content in carborane molecules, these compounds are considered potential candidates for BNCT-based cancer treatment ...
Lana I. Lissovskaya, Ilya V. Korolkov
doaj   +1 more source

Poly[di(2-thiophenyl)carborane]s: conducting polymers with high electrochemical and thermal resistance. [PDF]

, 2007
International audienceThe synthesis, X-ray structure and electropolymerization of three new carbon-carbon linked di(2-thiophenyl)carboranes (, and ) are reported; the resulting polymers bearing icosahedral ortho-, meta- or para-carborane clusters show ...
Fabre, Bruno, Graça H. Vicente, M., Hao, Erhong, R. Fronczek, Frank   +3 more
core   +4 more sources

Aziridination of a Single Carbon Atom in Alkenes via Energy Transfer Catalysis

Angewandte Chemie International Edition, EarlyView.
Contrary to traditional alkene aziridination via (formal) nitrene transfer, we herein report a strategy that achieves intermolecular aziridination of a single alkene carbon atom and installs an additional group at the other. Enabled by metal‐free energy transfer (EnT) catalysis, alkenyl boronates and silanes are transformed into reactive intermediates ...
Fritz Paulus, Corinna Heusel, Felix H. Wessels, Bünyamin Sikora, Maik G. Niedziella, Kilian van der Beck, Constantin G. Daniliuc, Frank Glorius   +7 more
wiley   +1 more source

Carborane-stilbene dyads: influence of substituents and cluster isomers on the photoluminescence properties [PDF]

, 2016
Two novel styrene-containing meta-carborane derivatives substituted at the second carbon cluster atom (Cc) with either a methyl (Me), or a phenyl (Ph) group, are introduced herein alongside with a new set of stilbene-containing ortho- (o-) and meta ...
Cabrera-González, Justo, Ferrer-Ugalde, Albert, Haukka, Matti, Juárez-Pérez, Emilio J., Montenegro, José María, Núñez Aguilera, Rosario, Pérez-Inestrosa, Ezequiel, Sillanpää, Reijo, Teixidor, Francesc   +8 more
core   +1 more source

N‐heterocyclic carbene‐based tetradentate Pt(II) phosphors for blue organic light‐emitting diodes: Molecular design, photophysics, and device performance

Bulletin of the Korean Chemical Society, EarlyView.
Structure‐oriented design of NHC‐based tetradentate Pt(II) complexes offers narrowband deep‐blue emission for OLEDs. This review highlights how steric shielding and electronic modulation regulate intermolecular interactions, excited‐state dynamics, and device performance, outlining design principles and outlines toward efficient and durable blue ...
Mingi Kim, Chan Hee Ryu, Kang Mun Lee
wiley   +1 more source

Carboranes as Lewis Acids: Tetrel Bonding in CB₁₁H₁₁ Carbonium Ylide

Crystals, 2021
High-level quantum-chemical computations (G4MP2) are carried out in the study of complexes featuring tetrel bonding between the carbon atom in the carbenoid CB11H11—obtained by hydride removal in the C-H bond of the known closo-monocarbadodecaborate ...
Maxime Ferrer, Ibon Alkorta, José Elguero, Josep M. Oliva-Enrich   +3 more
doaj   +1 more source

$\alpha$- and $\beta$- Relaxation Dynamics of a fragile plastic crystal

, 2006
We present a thorough dielectric investigation of the relaxation dynamics of plastic crystalline Freon112, which exhibits freezing of the orientational degrees of freedom into a glassy crystal below 90 K. Among other plastic crystals, Freon112 stands out
Loidl, A., Lunkenheimer, P., Pardo, L. C.   +2 more
core   +1 more source