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3,3,6,6-四甲基-9-苯基-3,4,5,6-四氢-9H-占吨-1,8(2H,7H)-二酮

3,3,6,6-Tetra-methyl-9-phenyl-3,4,5,6-tetra-hydro-9H-xanthene-1,8(2H,7H)-dione.

作者信息

Reddy B Palakshi, Vijayakumar V, Narasimhamurthy T, Suresh J, Lakshman P L Nilantha

出版信息

Acta Crystallogr Sect E Struct Rep Online. 2009 Mar 28;65(Pt 4):o916. doi: 10.1107/S1600536809010526.

DOI:10.1107/S1600536809010526
PMID:21582618
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC2969019/
Abstract

In the title compound, C(23)H(26)O(3), the three six-membered rings of the xanthene system are non-planar, having total puckering amplitudes, Q(T), of 0.443 (2), 0.202 (2) and 0.449 (2) Å. The central ring adopts a boat conformation and the outer rings adopt sofa conformations. The crystal structure is stabilized by van der Waals inter-actions.

摘要

在标题化合物C₂₃H₂₆O₃中，呫吨体系的三个六元环是非平面的，其总褶皱幅度Q(T)分别为0.443(2)、0.202(2)和0.449(2)Å。中心环呈船式构象，外环呈沙发式构象。晶体结构通过范德华相互作用得以稳定。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6692/2969019/8653706ebf36/e-65-0o916-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6692/2969019/8653706ebf36/e-65-0o916-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6692/2969019/8653706ebf36/e-65-0o916-fig1.jpg

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