Structure of 6-fluoro-1β,2β-methylene-3,20-dioxo-9β,10α-pregna-4,6-dien-17α-yl acetate
Autor: | J. F. Griffin, W. L. Duax, P. D. Strong, Zdzislaw Wawrzak |
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Rok vydání: | 1992 |
Předmět: | |
Zdroj: | Acta Crystallographica Section C Crystal Structure Communications. 48:570-572 |
ISSN: | 0108-2701 |
DOI: | 10.1107/s0108270191010715 |
Popis: | C24H29FO4, Mr = 400.5, orthorhombic, P2(1)2(1)2(1), a = 12.207 (1), b = 14.715 (1), c = 11.572 (1) A, V = 2078.7 (5) A3, Z = 4, Dx = 1.28 g cm-3, lambda (Cu K alpha) = 1.5418 A, mu = 7.62 cm-1, F(000) = 856, T = 291 K, final R = 0.041 for 2230 observed reflections. The A and B rings assume flat boat and 9 beta,10 alpha-half-chair conformations, with asymmetry parameters delta C3s = 1.5, delta C1,2s = 11.2 and delta C6,7(2) = 3.1, delta C7s = 15.0, respectively. |
Databáze: | OpenAIRE |
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