TY - JOUR
T1 - Infrared spectra of HF complexes with CCl4, CHCl3, and CH2Cl2 in solid argon
AU - Hunt, Rodney D.
AU - Andrews, Lester
PY - 1992
Y1 - 1992
N2 - Hydrogen fluoride complexes with CCl4, CHCl3, and CH2Cl2 were prepared in argon matrices and characterized by infrared spectroscopy. The spectra of CCl4 and HF revealed a strong CCl4-HF complex absorption at 3876 cm-1 with a considerably weaker band at 3904 cm-1 due to the CCl4-FH complex. Only one 1:2 complex, CCl4-HF-HF, was observed at higher HF concentrations and matrix annealings. Similarly, the HF interaction with CH2Cl2 produced two 1:1 complexes and one 1:2 complex. However, the major product absorption at 3901 cm-1 was assigned to the anti-hydrogen-bonded complex, CH2Cl2-FH, while a less intense doublet due to the CH2Cl2-HF complex appeared at 3799 and 3793 cm-1. The IR spectra of CHCl3 and HF were more complicated due to the presence of a third 1:1 complex. The CHCl3-HF complex band at 3860 cm-1 was clearly the strongest product absorption. In addition, the CHCl3-FH complex produced a 3903-cm-1 absorption, while a triplet probably due to the HF-HCCl3 complex was observed at 3893, 3883, and 3875 cm-1. Finally, the acid-base properties of these common solvents were considered.
AB - Hydrogen fluoride complexes with CCl4, CHCl3, and CH2Cl2 were prepared in argon matrices and characterized by infrared spectroscopy. The spectra of CCl4 and HF revealed a strong CCl4-HF complex absorption at 3876 cm-1 with a considerably weaker band at 3904 cm-1 due to the CCl4-FH complex. Only one 1:2 complex, CCl4-HF-HF, was observed at higher HF concentrations and matrix annealings. Similarly, the HF interaction with CH2Cl2 produced two 1:1 complexes and one 1:2 complex. However, the major product absorption at 3901 cm-1 was assigned to the anti-hydrogen-bonded complex, CH2Cl2-FH, while a less intense doublet due to the CH2Cl2-HF complex appeared at 3799 and 3793 cm-1. The IR spectra of CHCl3 and HF were more complicated due to the presence of a third 1:1 complex. The CHCl3-HF complex band at 3860 cm-1 was clearly the strongest product absorption. In addition, the CHCl3-FH complex produced a 3903-cm-1 absorption, while a triplet probably due to the HF-HCCl3 complex was observed at 3893, 3883, and 3875 cm-1. Finally, the acid-base properties of these common solvents were considered.
UR - http://www.scopus.com/inward/record.url?scp=0001671564&partnerID=8YFLogxK
U2 - 10.1021/j100196a018
DO - 10.1021/j100196a018
M3 - Article
AN - SCOPUS:0001671564
SN - 0022-3654
VL - 96
SP - 6945
EP - 6949
JO - Journal of Physical Chemistry
JF - Journal of Physical Chemistry
IS - 17
ER -