Towards detection of the molecular parity violation in chiral Ru(acac)$_3$ and Os(acac)$_3$

TL;DR

This paper combines theoretical calculations and initial experimental measurements to identify and analyze vibrational modes in chiral Ru(acac)$_3$ and Os(acac)$_3$ compounds that could reveal molecular parity violation effects with high sensitivity.

Contribution

It provides the first experimental vibrational spectra of Ru(acac)$_3$ and identifies modes with potential for detecting molecular parity violation using advanced relativistic calculations.

Findings

Identified vibrational modes with PV effects exceeding experimental sensitivity

Performed high-resolution vibrational spectroscopy of Ru(acac)$_3$

Theoretical calculations suggest promising candidates for PV detection

Abstract

We present a theory-experiment investigation of the helically chiral compounds Ru(acac)$_3$ and Os(acac)$_3$ as candidates for the next-generation experiments for detection of molecular parity violation (PV) in vibrational spectra. We used state-of-the-art relativistic calculations to identify optimal vibrational modes with expected PV effects exceeding by up to two orders of magnitude the projected instrumental sensitivity of the experiment under construction at the Laboratoire de Physique des Lasers in Paris. High-resolution measurements of the vibrational spectrum of Ru(acac)$_3$ carried out as the first steps towards the planned experiment are presented.