(Figure Presented) Fluoroform-CO interactions in the liquid phase at 100 K were studied by Car-Parrinello molecular dynamics (CPMD) calculations. The authors confirmed that this system can be characterized as a blue-shifted weak-hydrogen-bond system; their simulations show a blue-shifted fundamental stretching frequency with decreased intensity and a contraction of the C-H bond. The picture shows a snapshot of the CPMD simulation of fluoroform in liquid carbon monoxide. © 2005 Wiley-VCH Verlag GmbH & Co. KGaA.