Observed Molecular Alignment in Gaseous Streams and Possible Chiral Effects in Vortices and in Surface Scattering

Extensive work in this laboratory has been devoted to the study of intermolecular interactions from scattering experiments, in order to provide ingredients for modelling forces acting in systems involving hydrocarbons, the components of atmospheres, and water. Our detection of aligned oxygen in gaseous streams and further evidence on simple molecules has been extended to benzene and various hydrocarbons. Chiral effects can be seen in the differential scattering of oriented molecules, in particular from surfaces. It is pointed out that it may be of pre-biotical interest that we focus on possible mechanisms for chiral bio-stereochemistry of oriented reactants, for example when flowing in atmospheres of rotating bodies, specifically the planet earth, as well as in vortex motions of celestial objects. Molecular dynamics simulations and experimental verifications are in progress.

[1]  Fernando Pirani,et al.  A quantum mechanical view of molecular alignment and cooling in seeded supersonic expansions , 1999 .

[2]  Paola D'Agostino,et al.  Parity violation energy of biomolecules – II: DNA , 2005 .

[3]  Martin Quack,et al.  How important is parity violation for molecular and biomolecular chirality? , 2002, Angewandte Chemie.

[4]  Vincenzo Aquilanti,et al.  Collective hyperspherical coordinates for polyatomic molecules and clusters , 2000 .

[5]  L. Hartmann,et al.  Accretion processes in star formation , 1999 .

[6]  K. Blum,et al.  Scattering of polarized electrons from anisotropic chiral ensembles , 2001 .

[7]  Fernando Pirani,et al.  Collisional orientation of the benzene molecular plane in supersonic seeded expansions, probed by infrared polarized laser absorption spectroscopy and by molecular beam scattering , 2003 .

[8]  Fernando Pirani,et al.  Velocity dependence of collisional alignment of oxygen molecules in gaseous expansions , 1994, Nature.

[9]  P. Decleva,et al.  Valence photoionization dynamics in circular dichroism of chiral free molecules: the methyl-oxirane. , 2005, The Journal of chemical physics.

[10]  Martin F. Kessler.  Infrared Space Observatory , 1994 .

[11]  R. Naaman,et al.  Asymmetric scattering of polarized electrons by organized organic films of chiral molecules , 1999, Science.

[12]  V. Aquilanti,et al.  Rotational Alignment in Supersonic Seeded Beams of Molecular Oxygen , 1995 .

[13]  U Valbusa,et al.  Stereodynamic effects in the adsorption of propylene molecules on Ag(001). , 2005, The journal of physical chemistry. B.

[14]  K. Horn,et al.  Atom-specific identification of adsorbed chiral molecules by photoemission. , 2005, Physical review letters.

[15]  V. Aquilanti,et al.  Orientation of benzene in supersonic expansions, probed by IR-laser absorption and by molecular beam scattering. , 2001, Physical review letters.

[16]  F. Pirani,et al.  New insights on the stereodynamics of ethylene adsorption on an oxygen-precovered silver surface. , 2005, The Journal of chemical physics.

[17]  F. Sagués,et al.  Chiral Sign Induction by Vortices During the Formation of Mesophases in Stirred Solutions , 2001, Science.

[18]  Pedro Cintas,et al.  Absolute Asymmetric Synthesis under Physical Fields: Facts and Fictions. , 1998, Chemical reviews.

[19]  K. Blum,et al.  LETTER TO THE EDITOR: Chiral effects in the ionization of HCl by electron impact , 2000 .

[20]  Vincenzo Aquilanti.  Molecular Alignment in Gaseous Expansions and Anisotropy of Intermolecular Forces , 2005 .

[21]  S. Iannotta,et al.  Alignment of ethylene molecules in supersonic seeded expansions probed by infrared polarized laser absorption and by molecular beam scattering , 2006 .

[22]  Michel Guélin,et al.  UvA-DARE ( Digital Academic Repository ) Infrared Space Observatory ' s Discovery of C 4 H 2 , C 6 H 2 and Benzene in CRL 618 , 2022 .

[23]  Fernando Pirani,et al.  Molecular Beam Scattering of Nitrogen Molecules in Supersonic Seeded Beams: A Probe of Rotational Alignment , 1997 .

[24]  K. Blum,et al.  Enantio-selective collisions between unpolarized electrons and chiral molecules , 2001 .

[25]  Fernando Pirani,et al.  Orienting and aligning molecules for stereochemistry and photodynamics. , 2005, Physical chemistry chemical physics : PCCP.

[26]  D. Thompson.  Chiral effects in the ionization of chiral molecules by electron impact , 2004 .

[27]  K. Blum,et al.  DIFFERENTIAL CROSS SECTION FOR COLLISIONS BETWEEN ELECTRONS AND ORIENTED CHIRAL MOLECULES , 1999 .

[28]  H. Freund,et al.  Initial and final state contributions to binding-energy shifts due to lattice strain: Validation of Auger parameter analyses , 2006 .

[29]  F. Pirani,et al.  Stereodynamic effects in the adsorption of ethylene onto a metal surface. , 2004, Angewandte Chemie.

[30]  Ito Chao,et al.  Rotamer Dynamics of Substituted Simple Alkanes. 1. A Classical Trajectory Study of Collisional Orientation and Alignment of 1-Bromo-2-Chloroethane with Argon , 2004 .

[31]  Ana Heras,et al.  Infrared Space Observatory's Discovery of C4H2, C6H2, and Benzene in CRL 618 , 2001 .

[32]  G. Rikken,et al.  Enantioselective magnetochiral photochemistry , 2000, Nature.