Crystal Structure of Acetanilide: Use of Polarized Infra-Red Radiation

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THE crystal structure of acetanilide has been determined1 by classical X-ray diffraction methods, making use of information derived from polarized infra-red radiation technique as a time-saver in the trial-and-error process. The crystals from water or ethanol vary in form from plates {100} to truncated bipyramids {111}, but growth from the molten state results in acicular crystals, elongated along [b] and tabular on (100). The orthorhombic unit cell contains eight molecules and has dimensions: [a] = 19.50, [b] = 9.46 and [c] = 7.96 A.; space group PbcaD2h15.

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  1. 1

    Report of Institute of Physics X-Ray Analysis Conference, 1947, J. Sci. Instr., 25, 90 (1948).

  2. 2

    Winchell, A. N., "Optical Properties of Organic Compounds" (Wisconsin, 1943).

  3. 3

    Crooks, D. A., Nature, 160, 17 (1947).

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BROWN, C., CORBRIDGE, D. Crystal Structure of Acetanilide: Use of Polarized Infra-Red Radiation. Nature 162, 72 (1948) doi:10.1038/162072a0

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