Fluoronitrobenzenes

from Wikipedia, the free encyclopedia
Fluoronitrobenzenes
Surname 2-fluoronitrobenzene 3-fluoronitrobenzene 4-fluoronitrobenzene
other names o -fluoronitrobenzene m -fluoronitrobenzene p -fluoronitrobenzene
Structural formula Structure of 2-fluoronitrobenzene Structure of 3-fluoronitrobenzene Structure of 4-fluoronitrobenzene
CAS number 1493-27-2 402-67-5 350-46-9
PubChem 73895 9823 9590
Molecular formula C 6 H 4 FNO 2
Molar mass 141.10 g mol −1
Physical state liquid
Melting point −8 ° C 2 ° C 22-24 ° C
boiling point 215 ° C 204-206 ° C 204-206 ° C
GHS
labeling
07 - Warning
Caution
06 - Toxic or very toxic 08 - Dangerous to health
danger
06 - Toxic or very toxic 08 - Dangerous to health
danger
H and P phrases 315-319-335 301-311-331-373 302-312-331-373
no EUH phrases no EUH phrases no EUH phrases
261-305 + 351 + 338 261-280-301 + 310-311 261-280-311

In chemistry , the fluoronitrobenzenes form a group of substances that are derived from both nitrobenzene and fluorobenzene . The structure consists of a benzene ring with attached nitro group  (–NO 2 ) and fluorine  (–F) as substituents . Their different arrangement results in three constitutional isomers with the empirical formula C 6 H 4 FNO 2 .

properties

The p -fluoronitrobenzene, which has the highest symmetry, has the highest melting point. The introduction of the fluorine atom changes the boiling point only slightly compared to nitrobenzene (211 ° C).

Individual evidence

  1. ↑ a b c d e f Alfa-Aesar catalog 2008/09, p. 1153.
  2. ↑ Data sheet 1-Fluoro-2-nitrobenzene from Sigma-Aldrich , accessed on May 3, 2011 ( PDF ).
  3. ↑ Data sheet 1-Fluoro-3-nitrobenzene from Sigma-Aldrich , accessed on October 16, 2016 ( PDF ).
  4. ↑ Data sheet 1-Fluoro-4-nitrobenzene from Sigma-Aldrich , accessed on October 16, 2016 ( PDF ).
  5. ^ Entry on nitrobenzene in the GESTIS substance database of the IFA , accessed on December 27, 2014(JavaScript required) .