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Matrix Infrared Spectroscopy and Quantum‐Chemical Calculations for the Coinage‐Metal Fluorides: Comparisons of ArAuF, NeAuF, and Molecules MF 2 and MF 3
Author(s) -
Wang Xuefeng,
Andrews Lester,
Brosi Felix,
Riedel Sebastian
Publication year - 2013
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201203306
Subject(s) - neon , argon , molecule , infrared spectroscopy , chemistry , metal , spectroscopy , matrix isolation , analytical chemistry (journal) , infrared , matrix (chemical analysis) , atomic physics , physics , optics , organic chemistry , chromatography , quantum mechanics
The reactions of laser‐ablated Au, Ag, and Cu atoms with F 2 in excess argon and neon gave new absorptions in the MF stretching region of their IR spectra, which were assigned to metal‐fluoride species. For gold, a NgAuF bond was identified in mixed neon/argon samples. However, this bonding was much weaker with AgF and CuF. Molecules MF 2 and MF 3 (M=Au, Ag, Cu) were identified from the isotopic distribution of the Cu and Ag atoms, comparison of the frequencies for three metal fluorides, and theoretical frequency calculations. The AuF 5 molecule was characterized by its strongest stretching mode and theoretical frequency calculations. Additional evidence was observed for the formation of the Au 2 F 6 molecule.