The Crystal and Molecular Structure of 2,3,6,8,9-Pentaphenyl-1-thia-6-azaspiro[4.4]nona-2,8-diene-4,7-dione
作者:Noritake Yasuoka、Yasushi Kai、Nobutami Kasai
DOI:10.1246/bcsj.58.2943
日期:1985.10
The title compound crystallizes in monoclinic form, space group P21/c with a=20.810(1), b=16.000(1), c=18.131(1) Å, β=107.77(1)°, Z=8. The structure was established by the direct method and refined including all hydrogen atoms by the blockdiagonal least-squares procedure, R=0.062 for 4609 observed reflections. The heterocyclic spiran skeletons in two independent molecules have the same structure; however, four phenyl rings out of five take different conformations to the hetero rings to which they attached.
标题化合物呈单斜晶体,空间群为 P21/c,a=20.810(1),b=16.000(1),c=18.131(1) Å,β=107.77(1)°,Z=8。该结构由直接法确定,并通过对角线最小二乘法细化了包括所有氢原子在内的结构,在 4609 个观察到的反射中,R=0.062。两个独立分子中的杂环螺旋骨架具有相同的结构;但是,五个苯基环中的四个与它们所连接的杂环具有不同的构象。