Study of the Wurtzite-Type Compounds. V. Structure of Aluminum Oxycarbide, Al2CO; A Short-Range Wurtzite-Type Superstructure

Al2CO has a long-range disordered structure based on the wurtzite lattice and a short-range √3a, 2c superstructure. The long-range atomic parameters were determined from the single crystal sharp diffraction data with Mo K radiation. The diffuse spectra, although very apparent on the single-crystal x-ray photographs, were inadequate to completely define the short-range structure; however, the general features of this structure could be inferred and some analogies made to known structures which are wholly or in part wurtzite-lattice superstructures.