2-(TRIFLUOROMETHYL)PIPERAZINE - SYNTHESIS AND CHARACTERIZATION USING NMR AND X-RAY PHOTOELECTRON-SPECTROSCOPY

Authors
JENNESKENS LW MAHY J DEBRABANDERVANDENBERG EMM VANDERHOEF I LUGTENBURG J
Citation
Lw. Jenneskens et al., 2-(TRIFLUOROMETHYL)PIPERAZINE - SYNTHESIS AND CHARACTERIZATION USING NMR AND X-RAY PHOTOELECTRON-SPECTROSCOPY, Recueil des travaux chimiques des Pays-Bas, 114(3), 1995, pp. 97-102
Citations number
37
Categorie Soggetti
Chemistry
Journal title
Recueil des travaux chimiques des Pays-Bas → ACNP
ISSN journal
01650513
Volume
114
Issue
3
Year of publication
1995
Pages
97 - 102
Database
ISI
SICI code
0165-0513(1995)114:3<97:2-SACU>2.0.ZU;2-F
Abstract
The synthesis of 2-(trifluoromethyl)piperazine (1) is reported. H-1 NM R spectroscopy shows that in the chair-type piperazine ring the CF, gr oup occupies an equatorial position. X-ray photoelectron spectroscopy of solid 1 reveals that the CF3 group induces a secondary (beta) chemi cal shift of 1.5 eV on the C 1s core binding energy of its nearest nei ghbour carbon atom. The results are supported by semi-empirical PM3 an d HAM/3 calculations.