The structure of solid acetylene-d2, C2D2, at 4.2 K. A further refinement
Abstract
<h2>Acta Crystallographica Section B</h2><h3>Structural Crystallography and Crystal Chemistry</h3><h3>0567-7408</h3> <h2>short communications</h2> Volume 31 Part 3 Pages 933-935 March 1975 <h2>The structure of solid acetylene- d 2 , C 2 D 2 , at 4.2 K. A further refinement</h2> H. K. Koski 933 SHORT COMMUNICATIONS Contributions intended for publication under this heading shouM be expressly so marked; they should not exceed about 1000 words; they should be forwarded in the usual way to the appropriate Co-editor; they will be published as speedily as possible. Publication will be quicker if the contributions are without illustrations. Acta Cryst. (1975). B31, 933 The structure of solid acetylene-d2, C2D2, at 4"2 K. A further refinement. By HARRI K. KOSKI, Department of Physics, University of Helsinki, Siltavuorenpenger 20c, SF-00170 Helsinki 17, Finland (Received 2 December 1974; accepted 5 December 1974) The neutron powder diffraction pattern of orthorhombic C2D2 at 4.2 K has been re-examined by the Rietveld profile-refinement technique. The final values for Rt were 5-16% and 3.67%, respectively, for least-squares refinements with isotropic and anisotropic thermal parameters. Introduction Recently, the crystal structure of the low-temperature phase of solid C2Dz has been reported by Koski & Sfindor (1975) (K & S). The positional parameters and