https://doi.org/10.1007/s100530170216
Isotopic effects on the control of molecular handedness of H2POSH by ultrashort laser pulses
1
Departamento de Química, ICEX/UFMG, 31270-901, Belo Horizonte/MG, Brazil
2
Institut für Chemie, Physikalische und Theoretische Chemie, Freie Universität
Berlin, Takustrasse 3, 14195 Berlin, Germany
Corresponding author: a leti@chemie.fu-berlin.de
Received:
31
August
2000
Revised:
23
November
2000
Published online: 15 May 2001
The selective preparation of an enantiomer starting from a pure state of H2POSH representing a 50%:50% mixture of two enantiomers with opposite chiralities is extended to its deuterated counterpart, H2POSD. A one-dimensional model involving the torsional angle of S–H/D around a pre-oriented P–S axis is used. The design of an appropriate sequence of ultrashort infrared laser pulses to achieve molecular handedness for H2POSH/D is based on the characteristic level splitting and tunneling times of both molecules. A simple scheme of two linearly polarized laser pulses involving a three level system serves to convert the different isotopomers to opposite enantiomers, for any given mixture of H2POSH and H2POSD molecules.
PACS: 11.30.Rd – Chiral symmetries / 33.15.Hp – Barrier heights (internal rotation, inversion, rotational isomerism, conformational dynamics) / 42.50.Ct – Quantum description of interaction of light and matter; related experiments
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2001
