Zobrazeno 1 - 10
of 26
pro vyhledávání: '"35"'
Autor:
Peter Gast, J. S. van den Brink, S. A. M. Nieuwenhuis, Jan Raap, Johan Lugtenburg, Arnold J. Hoff, R. J. Hulsebosch
Publikováno v:
Journal of the American Chemical Society. 119:8685-8694
Selective 2H-, 13C-, and 17O-isotope labeling of the tyrosine amino acid has been used to map the unpaired π-electron spin-density distribution of the UV-generated neutral l-tyrosine phenoxy radical in alkaline frozen solution. The use of 13C and 17
Autor:
Y. Maeda, K. U. Ingold
Publikováno v:
Journal of the American Chemical Society. 102:328-331
A search for a dialkylaminyl radical which rearranges at a rate suitable for study by kinetic EPR spectroscopy has shown that cyclobutyl-n-propylaminyl is such a species. This radical undergoes ring opening, and the rate constant for this process can
Publikováno v:
Journal of the American Chemical Society. 105:7337-7345
Studies have been conducted on the ground-state and excited-state solvolyses of the isomeric 7,8-dichloro derivatives of benzonaphthobicyclo(2.2.2)octadiene and benzoveratrobicyclo(2.2.2)octadiene. The silver ion assisted ground-state reactions proce
Autor:
Megan E. Fieser, Joseph W. Ziller, Filipp Furche, Matthew R. MacDonald, Jefferson E. Bates, William J. Evans
Publikováno v:
Journal of the American Chemical Society. 134:8420-8423
The first molecular complexes of holmium and erbium in the +2 oxidation state have been generated by reducing Cp'(3)Ln [Cp' = C(5)H(4)SiMe(3); Ln = Ho (1), Er (2)] with KC(8) in the presence of 18-crown-6 in Et(2)O at -35 °C under argon. Purificatio
Autor:
Harry C. Dorn, Rong Huang, Steven Stevenson, Katelyn R. Tepper, Hannah M. Franklin, Kevin Cover, Xiaoyang Liu, Narasimhamurthy Shanaiah, Ryan M. Koenig, Diego Troya, Xiaoling Wang, D. Mathew Sublett, Xu Feng, Tiffany L. Seeler, Robert J. Bodnar
Publikováno v:
Journal of the American Chemical Society. 143:4593-4599
Although fullerenes were discovered nearly 35 years ago, scientists still struggle to isolate "single molecule" tubular fullerenes larger than C90. In similar fashion, there is a paucity of reports for pristine single-walled carbon nanotubes (SWNTs).
Publikováno v:
Journal of the American Chemical Society. 141:3258-3264
Birefringent materials, the key components in modulating the polarization of light, are of great importance in optical communication and the laser industry. Limited by their transparency range, few birefringent materials can be practically used in th
Publikováno v:
Journal of the American Chemical Society. 138:2500-2503
The synthesis and isolation of stable main group radicals remains an ongoing challenge. Here we report the application of frustrated Lewis pair chemistry to the synthesis of boron-containing radicals. H2 activation with polyaromatic diones and B(C6F5
Publikováno v:
Journal of the American Chemical Society. 137:6983-6986
The development of electrocatalysts to generate hydrogen, with good activity and stability, is a great challenge in the fields of chemistry and energy. Here we demonstrate a "hitting three birds with one stone" method to synthesize less toxic metalli
Autor:
Jia Huang, Allen L. Ng, Yanmei Piao, YuHuang Wang, Mark C. Hersam, Chuan-Fu Sun, Chien-Fu Chen, Alexander A. Green, Cheng S. Lee
Publikováno v:
Journal of the American Chemical Society. 135:2306-2312
Atom-thick materials such as single-walled carbon nanotubes (SWCNTs) and graphene exhibit ultrahigh sensitivity to chemical perturbation partly because all of the constituent atoms are surface atoms. However, low selectivity due to nonspecific bindin
Autor:
Johannes A. M. Hepperle, Brooks J. Culotta, Gerhard Erker, Allan Jay P. Cardenas, Stefan Grimme, Jeffrey L. Petersen, Roland Fröhlich, Armido Studer, Timothy H. Warren, Gerald Kehr, Constantin G. Daniliuc, Annika Stute, Birgitta Schirmer, Muhammad Sajid
Publikováno v:
Journal of the American Chemical Society
The intramolecular cyclohexylene-bridged P/B frustrated Lewis pair [Mes(2)P-C(6)H(10)-B(C(6)F(5))(2)] 1b reacts rapidly with NO to give the persistent FLP-NO aminoxyl radical 2b formed by P/B addition to the nitrogen atom of NO. This species was full