2007-08-212007-08-211955Burns, John Howard. "The crystal structure of arsenomethane." (1955) Diss., Rice University. <a href="https://hdl.handle.net/1911/18207">https://hdl.handle.net/1911/18207</a>.https://hdl.handle.net/1911/18207The structure of the yellow form of arsenomethane has been studied by single crystal x-ray techniques at reduced temperature. The crystals are monoclinic and belong to the space group C2h5 - P21/n, with a = 8.88 A, b = 12.55 A, c = 11.61 A, and beta = 101&deg;46'. The unit cell contains four molecules. Harker synthesis, Patterson section and Fourier projection methods were used to locate the arsenic atoms. Geometrical considerations were combined with the difference Fourier method to find the carbon atoms. The parameters were refined by application of the least-squares procedure to three dimensional diffraction data. The molecule consists of a puckered, five-membered ring of arsenic atoms to each of which is attached a methyl group. The As-As bond length varies significantly from 2.42 A to 2.45 A, and the C-As bond length varies from 1.94 A to 1.98 A. The As-As-As bond angle varies from 971/2&deg; to 1051/2&deg; and the C-As-As bond angle from 94&deg; to 1021/2&deg;.application/pdfengCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.Organic chemistryThesisThesis Chem. 1955 Burns