Preparation and photoelectron spectrum of the glycine molecular anion: assignment to a dipole-bound electron species with a high-dipole moment, non-zwitterionic form of the neutral core.
We report the gas-phase preparation of negatively charged glycine as well as the Gly(H(2)O)(1,2) (-) complexes by entrainment of the neutral precursor into an ionized supersonic expansion tuned to optimize the (H(2)O)(n) (-)Ar(m) clusters. The photoelectron spectrum of Gly(-) displays the signature of a dipole-bound species, with sufficient vibrational fine structure to characterize the core neutral as a higher energy, non-zwitterionic isomer of the amino acid.
Sterling Chemistry Laboratory, Yale University, New Haven, CT 06520, USA.
Eric G
EG
Diken
Nathan I
NI
Hammer
Mark A
MA
Johnson
D000838:Anions; D003198:Computer Simulation; D004563:Electrochemistry / Q000379:methods*; D004574:Electromagnetic Fields; D004583:Electrons; D005740:Gases / Q000737:chemistry; D005998:Glycine / Q000737:chemistry*; D008027:Light; D008956:Models, Chemical; D008958:Models, Molecular; D010777:Photochemistry / Q000379:methods*; D013057:Spectrum Analysis; D055672:Static Electricity
D000838:Anions; D005740:Gases; D005998:Glycine