著者

Noriko OGAWA Hiromasa NAGASE Tomohiro ENDO Thorsteinn LOFTSSON Haruhisa UEDA

出版者

(社)日本分析化学会

雑誌

X-ray Structure Analysis Online (ISSN:18833578)

巻号頁・発行日

vol.25, pp.83-84, 2009 (Released:2009-07-25)

参考文献数

6

被引用文献数

2 8

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The crystal structure of the fentanyl base (C22H28N2O) is monoclinic, P21/n. The unit-cell dimensions at 293 K are a = 5.69263(10)Å, b = 25.1851(5)Å, c = 13.8608(3)Å, β = 104.2037(7)°. The R value is R = 0.0626 for 2208 reflections. The piperidine ring has a near-ideal chair conformation. In the packing, the intermolecular T-shaped π/π interactions were observed.