|
|
|
|
| LEADER |
01000naa a22002652 4500 |
| 001 |
NLM252391640 |
| 003 |
DE-627 |
| 005 |
20231224164023.0 |
| 007 |
cr uuu---uuuuu |
| 008 |
231224s2016 xx |||||o 00| ||eng c |
| 024 |
7 |
|
|a 10.1002/mrc.4327
|2 doi
|
| 028 |
5 |
2 |
|a pubmed24n0841.xml
|
| 035 |
|
|
|a (DE-627)NLM252391640
|
| 035 |
|
|
|a (NLM)26332615
|
| 040 |
|
|
|a DE-627
|b ger
|c DE-627
|e rakwb
|
| 041 |
|
|
|a eng
|
| 100 |
1 |
|
|a Rastogi, Shiva K
|e verfasserin
|4 aut
|
| 245 |
1 |
0 |
|a Through-space (19)F-(19)F spin-spin coupling in ortho-fluoro Z-azobenzene
|
| 264 |
|
1 |
|c 2016
|
| 336 |
|
|
|a Text
|b txt
|2 rdacontent
|
| 337 |
|
|
|a ƒaComputermedien
|b c
|2 rdamedia
|
| 338 |
|
|
|a ƒa Online-Ressource
|b cr
|2 rdacarrier
|
| 500 |
|
|
|a Date Completed 12.05.2016
|
| 500 |
|
|
|a Date Revised 19.01.2016
|
| 500 |
|
|
|a published: Print-Electronic
|
| 500 |
|
|
|a Citation Status PubMed-not-MEDLINE
|
| 520 |
|
|
|a Copyright © 2015 John Wiley & Sons, Ltd.
|
| 520 |
|
|
|a We report through-space (TS) (19)F-(19)F coupling for ortho-fluoro-substituted Z-azobenzenes. The magnitude of the TS-coupling constant ((TS) JFF ) ranged from 2.2-5.9 Hz. Using empirical formulas reported in the literature, these coupling constants correspond to non-bonded F-F distances (dFF) of 3.0-3.5 Å. These non-bonded distances are significantly smaller than those determined by X-ray crystallography or density functional theory, which argues that simple models of (19)F-(19)F TS spin-spin coupling solely based dFF are not applicable. (1)H, (13)C and (19)F data are reported for both the E and Z isomers of ten fluorinated azobenzenes. Density functional theory [B3YLP/6-311++G(d,p)] was used to calculate (19) F chemical shifts, and the calculated values deviated 0.3-10.0 ppm compared with experimental values
|
| 650 |
|
4 |
|a Journal Article
|
| 650 |
|
4 |
|a 13C
|
| 650 |
|
4 |
|a 19F
|
| 650 |
|
4 |
|a 1H
|
| 650 |
|
4 |
|a NMR
|
| 650 |
|
4 |
|a azobenzene
|
| 650 |
|
4 |
|a cis-azoenzene
|
| 650 |
|
4 |
|a fluorinated azobenzene
|
| 650 |
|
4 |
|a through-space coupling
|
| 700 |
1 |
|
|a Rogers, Robert A
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Shi, Justin
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Brown, Christopher T
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Salinas, Cindy
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Martin, Katherine M
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Armitage, Jacob
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Dorsey, Christopher
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Chun, Gao
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Rinaldi, Peter
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Brittain, William J
|e verfasserin
|4 aut
|
| 773 |
0 |
8 |
|i Enthalten in
|t Magnetic resonance in chemistry : MRC
|d 1985
|g 54(2016), 2 vom: 12. Feb., Seite 126-31
|w (DE-627)NLM098179667
|x 1097-458X
|7 nnns
|
| 773 |
1 |
8 |
|g volume:54
|g year:2016
|g number:2
|g day:12
|g month:02
|g pages:126-31
|
| 856 |
4 |
0 |
|u http://dx.doi.org/10.1002/mrc.4327
|3 Volltext
|
| 912 |
|
|
|a GBV_USEFLAG_A
|
| 912 |
|
|
|a SYSFLAG_A
|
| 912 |
|
|
|a GBV_NLM
|
| 912 |
|
|
|a GBV_ILN_350
|
| 951 |
|
|
|a AR
|
| 952 |
|
|
|d 54
|j 2016
|e 2
|b 12
|c 02
|h 126-31
|