Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 23, Issue 31, Pages 7474-7482Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201700999
Keywords
radicals; helical structures; pancake bonding; through-space interactions; pi-stacking
Categories
Funding
- Interactive Materials Science Cadet program, Japan
- US-NSF [CHE-1006702]
- JSPS KAKENHI [JP25248007, JP24109002, JP15H00999, JP17H05157, JP26107004]
- King Khalid University under the Research Center for Advanced Materials Science at King Khalid University, Kingdom of Saudi Arabia [RCAMS/KKU/001-16]
- Grants-in-Aid for Scientific Research [17H05157, 25248007] Funding Source: KAKEN
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We show that diradicaloid helical conjugated molecules can display strong through-space bonding interactions. These interactions are analogous to pi-stacking pancake bonding widely observed for dimers and other aggregates of stable pi-conjugated radicals. We show that these multicenter interactions can have a significant stabilizing effect, but they depend in subtle ways on the specific overlap and relative orientations of the radical carrying subunits. The specific through-space interactions between the radicaloid units occur at specific size ranges of the helical molecules.
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