title: Search for a parity-violating energy difference between enantiomers of a chiral iron complex
abstract: Mossbauer spectra for l and d enantiomers of the Fe(phen)3Sb2(C4H2O6)(2);8H(2)O complex are reported. Four independent experiments show a small but reproducible energy shift of the Fe-Mossbauer spectra for the two enantiomers of 0.004+/-0. 002 mm/sec ( 1.9x10(-10) eV). This exceedingly small energy difference is comparable to that predicted by the parity-violating energy difference (PVED) using a Z6.2 scaling law applied to low Z ( Z = 6) molecules. Theoretical calculations suggest that the PVED for the Fe(phen)2+3 moiety should be smaller than this estimate, however, PVED effects of the chiral antimony tartrates are not taken into account.
authors.affiliation: Department of Physics, Berea College, Berea, Kentucky 40404, USA.
authors.initials: AS
authors.lastname: Lahamer
authors.initials: SM
authors.lastname: Mahurin
authors.initials: RN
authors.lastname: Compton
authors.initials: D
authors.lastname: House
authors.initials: JK
authors.lastname: Laerdahl
authors.initials: M
authors.lastname: Lein
authors.initials: P
authors.lastname: Schwerdtfeger