2,3-Diarylmaleate salts as a versatile class of diarylethenes with a full spectrum of photoactivity in water.

There is incessant interest in the transfer of common chemical processes from organic solvents to water, which is vital for the development of bioinspired and green chemical technologies. Diarylethenes feature a rich photochemistry, including both irreversible and reversible reactions that are in demand in organic synthesis, materials chemistry, and photopharmacology. Herein, we introduce the first versatile class of diarylethenes, namely, potassium 2,3-diarylmaleates (DAMs), that show excellent solubility in water.

Isotope effects on the resonance interactions and vibrational quantum dynamics of fluoroform CHF.

We report a comparison of the analysis of the low energy spectrum of CHF and CHF from the THz (FIR) range to the ν fundamental at high resolution (δ[small nu, Greek, tilde] < 0.001 cm or otherwise Doppler limited) on the basis of FTIR spectra taken both with ordinary light sources and with the synchrotron radiation from the Swiss Light Source. Several vibrational levels are accurately determined including, in particular, the 2ν CH-bending overtone and the ν CH-stretching fundamental of CHF.

High-resolution FTIR spectroscopy of trisulfane HSSSH: a candidate for detecting parity violation in chiral molecules.

We report the first successful high-resolution analyses of the Fourier transform infrared (FTIR) spectrum of trisulfane. A band centered at 861.0292 cm can be assigned unambiguously to the chiral trans conformer by means of ground state combination differences in comparison with known rotational spectra.

Synchrotron-Based Highest Resolution Terahertz Spectroscopy of the ν Band System of 1,2-Dithiine (CHS): A Candidate for Measuring the Parity Violating Energy Difference between Enantiomers of Chiral Molecules.

The chiral C symmetric molecule 1,2-dithiine (1,2-dithia-3,5-hexadiene, CHS) has been identified as a possible candidate for measuring the parity violating energy difference between enantiomers. We report here the observation and analysis of the low-frequency fundamental ν using highest resolution synchrotron-based interferometric Fourier transform infrared (FTIR) spectroscopy in the terahertz range with a band center of ν = 6.95375559 THz (ν̃ = 231.

High resolution GHz and THz (FTIR) spectroscopy and theory of parity violation and tunneling for 1,2-dithiine (C4H4S2) as a candidate for measuring the parity violating energy difference between enantiomers of chiral molecules.

We report high resolution spectroscopic results of 1,2-dithiine-(1,2-dithia-3,5-cyclohexadiene, C4H4S2) in the gigahertz and terahertz spectroscopic ranges and exploratory theoretical calculations of parity violation and tunneling processes in view of a possible experimental determination of the parity violating energy difference ΔpvE in this chiral molecule. Theory predicts that the parity violating energy difference between the enantiomers in their ground state (ΔpvE ≃ 1.1 × 10(-11)(hc) cm(-1)) is in principle measurable as it is much larger than the calculated tunneling splitting for the symmetrical potential ΔE± < 10(-24) (hc) cm(-1).