Abstract
The reactions of tetracarbonylnickel and tricarbonylnitrosylcobalt in liquid hydrogen chloride with the halogens, nitrosyl chloride, and phosphorus pentafluoride are described. Two new compounds, tetrachlorotricarbonyldinickel and dichlorodinitrosylnickel, were prepared and isolated. The structure of these compounds is discussed in terms of their i.r. spectra and magnetic properties.