Search

Your search keyword '"Widner, Danielle L."' showing total 7 results
Start Over Author "Widner, Danielle L."
7 results on '"Widner, Danielle L."'

4. Architectures and complex functions of tandem riboswitches

Author

Sherlock, Madeline E., primary, Higgs, Gadareth, additional, Yu, Diane, additional, Widner, Danielle L., additional, White, Neil A., additional, Sudarsan, Narasimhan, additional, Sadeeshkumar, Harini, additional, Perkins, Kevin R., additional, Mirihana Arachchilage, Gayan, additional, Malkowski, Sarah N., additional, King, Christopher G., additional, Harris, Kimberly A., additional, Gaffield, Glenn, additional, Atilho, Ruben M., additional, and Breaker, Ronald R., additional

Published
2022
Full Text
View/download PDF

5. Comparing Strong and Weak Halogen Bonding in Solution: 13 C NMR, UV/Vis, Crystallographic, and Computational Studies of an Intramolecular Model

Author

Widner, Danielle L., primary, Robinson, Emily R., additional, Perez, Alejandra B., additional, Vang, Herh G., additional, Thorson, Rachel A., additional, Driscoll, Zakarias L., additional, Giebel, Sierra M., additional, Berndt, Calvin W., additional, Bosch, Eric, additional, Speetzen, Erin D., additional, and Bowling, Nathan P., additional

Published
2017
Full Text
View/download PDF

6. Comparing Strong and Weak Halogen Bonding in Solution: 13C NMR, UV/Vis, Crystallographic, and Computational Studies of an Intramolecular Model.

Author

Widner, Danielle L., Robinson, Emily R., Perez, Alejandra B., Vang, Herh G., Thorson, Rachel A., Driscoll, Zakarias L., Giebel, Sierra M., Berndt, Calvin W., Bosch, Eric, Speetzen, Erin D., and Bowling, Nathan P.

Subjects
*HALOGENS, *CHEMICAL bonds, *ARYLENE group, *NUCLEAR magnetic resonance, *CRYSTALLIZATION
Abstract

A series of arylene ethynylene compounds has been generated in order to study the differences between strong and weak intramolecular halogen bonding in solution. With strong intramolecular halogen bonding, the presence of electron-withdrawing fluorine substituents near the halogen-bond donor has a significant impact on the halogen bond and consequently on 13C NMR chemical shifts. UV/V is studies suggest increased conjugation of the arylene ethynylene backbone when strong halogen bonds are present. UV/Vis and NMR signatures of intramolecular halogen bonding are diminished significantly when electron-withdrawing fluorine substituents are absent, however. This change in behavior is further illustrated by differences in crystallization tendencies with the presence or absence of electron-withdrawing substituents. Calculations using the M06-2X functional provide some insight into the energies associated with both strong and weak intramolecular halogen bonding. [ABSTRACT FROM AUTHOR]

Published
2017
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results