Y, and X
Y
Z stretching region
VCD spectroscopy in the 1900–2400 cm−1 region has less often been studied. This article briefly summarises VCD studies in this spectral region and discusses the properties of 1900–2400 cm−1 chromophores.
VCD spectroscopy associated with DFT calculations is a powerful tool to unambiguously assign both the absolute configurations and conformations of chiral secondary metabolites directly in solution.
Solute–solvent interactions influence IR and VCD spectra of the two model peptides in DMSO-d6. Spectra simulations need to take different solvation states for different conformer families into account.
Inclusion of acetonitrile explicit solvation is required for the correct reproduction of VCD features of furofuran lignans, even for molecules devoid of H-bond donor groups.
Experimental VCD spectroscopy helps benchmarking computational approaches to identify resonances in anharmonic VPT2 spectra calculations.