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Ìú³æ (СÓÐÃûÆø)

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ÈçºÎ½«ÓÃcifµ¼³öµÄÊý¾ÝÊäÈëµ½wordÀCrystal data
  C30H52O4        F(000) = 1056
Mr = 476.72        Dx = 1.152 Mg m-3
Monoclinic, C2        Mo Ka radiation, l = 0.71073 Å
a = 23.908 (5) Å        Cell parameters from 2903 reflections
b = 7.4853 (15) Å        q = 3.1-25.5¡ã
c = 15.363 (3) Å        m = 0.07 mm-1
b = 91.89 (3)¡ã        T = 153 K
V = 2747.8 (10)  Å3        Block, colourless
Z = 4        0.18 ¡Á 0.15 ¡Á 0.10 mm

Data collection
  Bruker D8 Venture
diffractometer        4832 independent reflections
Radiation source: fine-focus sealed tube        4542 reflections with I > 2(I)
Graphite monochromator        Rint = 0.031
 scans        max = 25.5¡ã, min = 3.1¡ã
Absorption correction: multi-scan
(SADABS; Sheldrick, 2003)        h = -2728
Tmin = 0.987, Tmax = 0.993        k = -89
10787 measured reflections        l = -1818

Refinement
  Refinement on F2        Secondary atom site location: difference Fourier map
Least-squares matrix: full        Hydrogen site location: inferred from neighbouring sites
R[F2 > 2(F2)] = 0.042        H-atom parameters constrained
wR(F2) = 0.098        w = 1/[2(Fo2) + (0.0623P)2 + 0.2267P]  
where P = (Fo2 + 2Fc2)/3
S = 1.09        (/max = 0.001
4832 reflections        max = 0.19 e Å-3
318 parameters        min = -0.24 e Å-3
1 restraint        Absolute structure:  Flack H D (1983), Acta Cryst. A39, 876-881
Primary atom site location: structure-invariant direct methods        Absolute structure parameter: -0.6 (8)

[ Last edited by linhua0402313 on 2016-2-15 at 09:30 ]
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