A SIMPLE METHOD FOR THE MATRIX-ISOLATION OF MONOMERIC AND DIMERIC CARBOXYLIC-ACIDS

We have used a supersonic jet to matrix isolate either well defined hy drogen bonded aggregates or the monomeric species of carboxylic acids (formic acid or acetic acid, respectively). By varying several paramet ers of the pulsed deposition we have shown that the pulse duration has the major influence on the aggregation in the gas phase. This allowed us to generate either the monomer or the dimer from the same gas mixt ure and to report for the first time the infrared spectra of matrix is olated formic acid cyclic dimers. (C) 1998 Elsevier Science B.V. All r ights reserved.