The Crystal Structure of 3-(10,11-dihydro-5<I>H</I>-dibenzo[<I>a</I>,<I>d</I>]cyclohepten-5-ylidene)-1-ethy1-2-methylpyrrolidine Hydrobromide

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概要

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• The crystal structure of 3-(10,11-dihydro-5H-dibenzo[<I>a</I>,<I>d</I>]cyclohepten-5-ylidene)-1-ethyl-2-methllpyrrolidine hydrobromide, C<SUB>22</SUB>H<SUB>26</SUB>NBr, has been determined. The crystal is monoclinic with space group <I>P</I>2<SUB>1</SUB>⁄<I>a</I>; the unit-cell dimensions are: <I>a</I>=30.16, <I>b</I>=18.78, <I>c</I>=7.048 Å, β=90.53°. The asymmetric unit contains two molecules. The intensities were estimated visually from the multiple-film equi-inclination Weissenberg photographs. The structure was solved by the heavy atom method. The atomic parameters were refined by the blockdiagonal least-squares method, and final <I>R</I> index was reduced to 0.147. It is concluded that the overall geometry of the two independent molecules is similar in every detail The pyrrolidine ring is puckered. The 10,11-dihydro-5<I>H</I>-dibenzo[<I>a</I>,<I>d</I>]cyclohepten-5-ylidene part consists of three planes. The dihedral angles between the planes are 63° for the benzene planes I and II, 59° for the benzene plane I and the ylidene plane, and 76° for the benzene plane II and the ylidene plane.

• 公益社団法人 日本化学会の論文

著者

• Morimoto Yukiyoshi

  Research Laboratories, Fujisawa Pharmaceutical Co., Ltd.

• Nojima Hiroshi

  Research Laboratories, Fujisawa Pharmaceutical Co., Ltd.

• Tokuma Yoji

  Research Laboratories, Fujisawa Pharmaceutical Co., Ltd.

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• The Crystal Structure of 3-(10,11-dihydro-5H-dibenzo[a,d]cyclohepten-5-ylidene)-1-ethy1-2-methylpyrrolidine Hydrobromide
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