Related Experiment Video
Updated: Jul 18, 2026

Spatial Separation of Molecular Conformers and Clusters
Published on: January 9, 2014
Two size regimes of methanol clusters produced by adiabatic expansion
H Bergersen1, M Abu-Samha, A Lindblad
1Department of Physics, Uppsala University, P.O. Box 530, SE-751 21 Uppsala, Sweden. henrik.bergersen@fysik.uu.se
Abstract:
Free neutral methanol clusters produced by adiabatic expansion have been studied by photoelectron spectroscopy and line shape modeling. The results show that clusters belonging to two distinct size regimes can be produced by changing the expansion conditions. While the larger size regime can be well described by line shapes calculated for clusters consisting of hundreds of molecules, the smaller size regime corresponds to methanol oligomers, predominantly of cyclic structure. There is little contribution from dimers to the spectra.
Related Concept Videos
Adiabatic Processes for an Ideal Gas
Phase Transitions: Vaporization and Condensation
Regioselectivity of Electrophilic Additions to Alkenes: Markovnikov's Rule
The hydrohalogenation of an unsymmetrical alkene can yield two haloalkane products, depending on which vinylic carbon takes up the halogen. However, one product usually predominates, where hydrogen adds to the vinylic carbon bearing the...
Pressure and Volume in an Adiabatic Process
Conformations of Ethane and Propane
Staggered conformation is a low energy and more stable conformation with the C-H bonds on the front carbon placed at 60°dihedral angles relative to the C-H bonds on the back carbon, leading to a reduced torsional strain. In staggered ethane, the...
[3,3] Sigmatropic Rearrangement of Allyl Vinyl Ethers: Claisen Rearrangement

