Crystal and molecular structure of 4-amino-4-carboxyl thiapyran hydrobromide
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چکیده
4-Amino-4-carboxylthiapyran hydrobromide crystallizes in the monoctinic space group P21/m, with a = 9 . 7 2 A , b = 6 . 6 0 A a n t i c = 7 . 1 0 A , /3=94.8 ~ and Z = 2. The structure was solved by the heavy atom method with 786 observed reflections and refined to an R of 0.076. There is an interesting weak interaction which the hetero sulfur atom of the thiapyran ring makes with a symmetry related amino nitrogen ( N . . . S distance 3.34 A) which significantly affects the "puckered-chair" conformation of the thiapyran ring.
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تاریخ انتشار 2005