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2996038 
Journal Article 
N lone-pair···π interaction: a rotational study of chlorotrifluoroethylene···ammonia 
Gou, Q; Spada, L; Geboes, Y; Herrebout, WA; Melandri, S; Caminati, W 
2015 
1 
Physical Chemistry Chemical Physics
ISSN: 1463-9076
EISSN: 1463-9084 
17 
12 
7694-7698 
English 
25484247 
WOS:000351437500013 
The rotational spectra of four isotopologues of the adduct C2F3Cl-NH3 show that NH3 is bound to the partner molecule through a (N)lone-pair···π interaction. Ammonia is located in proximity to the C2 atom (the one linked to two fluorine atoms), with the C2···N distance = 2.987(2) Å. The nuclear hyperfine structure due to the quadrupole coupling effects of (35)Cl/(37)Cl and (14)N nuclei has been fully resolved. The (14)N quadrupole coupling constants allow estimating the effective orientation of NH3 in the complex. 
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