TY - JOUR
T1 - Mechanochemical Reaction between the Probe and the Matrix
T2 - A Possible Source of Errors When IR Spectra of Alkali Acid Bifluorides Are Recorded in Alkali Halide Pressed Disks
AU - Reguera, E.
AU - Fernández-Bertrán, J.
AU - Paneque, A.
AU - Yee-Madeira, H.
PY - 2004
Y1 - 2004
N2 - The mechano-chemical reactions of alkali acid bifluorides (MHF 2), with alkali halides (MX), were studied by x-ray diffraction (XRD) and IR spectroscopy. The reactions were carried out by milling the solid reagents in equimolar ratio by hand in an agate mortar. LiHF2 is unstable on milling and decomposes to LiF and HF. Rb, Cs, and NH4 acid bifluorides react with KBr leading to the corresponding bromides and stable KHF2. Similar reactions are observed with Na halides, leading to NaHF2. NaHF2 reacts with KF to form KHF2 and NaF. The mechano-chemical reactions with alkali halides are considered in connection with the use of alkali halides as matrices for IR spectroscopy.
AB - The mechano-chemical reactions of alkali acid bifluorides (MHF 2), with alkali halides (MX), were studied by x-ray diffraction (XRD) and IR spectroscopy. The reactions were carried out by milling the solid reagents in equimolar ratio by hand in an agate mortar. LiHF2 is unstable on milling and decomposes to LiF and HF. Rb, Cs, and NH4 acid bifluorides react with KBr leading to the corresponding bromides and stable KHF2. Similar reactions are observed with Na halides, leading to NaHF2. NaHF2 reacts with KF to form KHF2 and NaF. The mechano-chemical reactions with alkali halides are considered in connection with the use of alkali halides as matrices for IR spectroscopy.
KW - Acid bifluorides
KW - Alkali halides
KW - IR spectroscopy
KW - Mechanochemistry
KW - X-ray diffraction
UR - http://www.scopus.com/inward/record.url?scp=1942537091&partnerID=8YFLogxK
U2 - 10.1081/SL-120030853
DO - 10.1081/SL-120030853
M3 - Artículo
SN - 0038-7010
VL - 37
SP - 191
EP - 199
JO - Spectroscopy Letters
JF - Spectroscopy Letters
IS - 2
ER -