EPSRC National Crystallography Service
Data Collection Summary kccd1 (dellboy)


Summary report for Directory: diska/04src0682

Report generated Aug 18, 2004; 13:48:12

Unit cell

10667 reflections with 2.91°<theta<27.48° (resolution between 7.00A and 0.77A) were used for unit cell refinement

Symmetry used
in scalepack
p1
a (Angstrom)9.9370 +/- 0.0003
b (Angstrom)13.2341 +/- 0.0005
c (Angstrom)19.5482 +/- 0.0007
alpha (°)72.8293 +/- 0.0017
beta (°)87.894 +/- 0.002
gamma (°)84.875 +/- 0.002
Volume (A**3)2446.19 +/- 0.15
Mosaicity (°)0.659 +/- 0.002

Data collection

Summary

Total number of images collected319
Total exposure time209.8 minutes
Data collection exposure time208.4 minutes
Data collection wall-clock time239.9 minutes

Experimental Conditions

Wavelength0.71073 A
Crystal to detector distance33.00 mm

Scans

TypeName# imagesTotal
Rotation
Per frame
Rotation
Exposure
per frame
Used in
scaling
data collections01f181362.0° phi2.000°40 secondsYes
data collections02f16 32.0° omega2.000°40 secondsYes
data collections03f58116.0° omega2.000°40 secondsYes
data collections04f56112.0° omega2.000°40 secondsYes
Phi/Chii01f - i08f810 seconds

Scalepack Scaling

Deleted observations

Rejected 106
Zero sigma or profile test  66
Overload or incomplete profile1120
Sigma cutoff  94
High resolution limit 141

Final Data Set

Scale factor range8.15-10.66
Number of 'full' reflections 26591
Number of 'partial' reflections 22730
Total number of integrated reflections 47274
Total number of unique reflections 11091
Data completeness  99.7%
Resolution range7.00-0.77 A
Theta range2.91°-27.48°
Average Intensity   13.6
Average Sigma(I)    1.2
Overall R-merge (linear)  0.085

Sadabs Results

Parameter refinement on 23833 reflections reduced R(int) from 0.0801 to 0.0454

Before rejection, 47186 reflections total and 11189 unique

After rejection, 46651 reflections total and 11185 unique

Runs

  Run 2-theta  R(int)  Incid. factors  Diffr. factors    K     Total I>2sig(I)
    1   10.1  0.0757   0.852 - 1.144   0.919 - 1.329   1.308   27660   15680
    2   -9.6  0.0830   0.820 - 0.905   0.956 - 1.149   1.315    2073    1063
    3   -9.6  0.0759   0.809 - 1.095   0.921 - 1.151   1.276    8654    4797
    4   -9.6  0.0803   0.810 - 1.126   0.919 - 1.179   1.322    8264    4452
Ratio of minimum to maximum apparent transmission: 0.691448

Metadata

  Group    Service  
  Operator   Peter Horton  
  Sample Owner   Dr. P. J. Murphy  
  Local Code   MD92  
  Formula   C52 H68 O4 Br4  
  Crystal Colour    Colourless  
  Crystal Habit    Plate  
  Crystal Size   0.38 x 0.29 x 0.04 (mm3) 
  Temperature   120(K) 
  Generator   50 (kV)   85 (mA) 
  Primary Solvent     
  Other Solvents     

File Explanations

SampleCode.zip
      SampleCode.hkl - data corrected using  SADABS
      SampleCode_merge_none.hkl - equivalents and friedels kept separate  (See "Final Data Set" table in this report)
      SampleCode.p4p - skeleton p4p file for use with XPREP
      SampleCode.htm - this summary file


Southampton CIF entry fields

_exptl_absorpt_process_details       'SADABS V2.10 (Sheldrick, G.M., 2003)'

_diffrn_ambient_temperature           120(2)
_diffrn_radiation_wavelength           0.71073
_diffrn_radiation_type                      MoK\a
_diffrn_radiation_source                  'Bruker-Nonius FR591 rotating anode'
_diffrn_radiation_monochromator    'graphite'
_diffrn_measurement_device_type  'Bruker-Nonius 95mm CCD camera on \k-goniostat'
_diffrn_measurement_method          '\f & \w scans'
_diffrn_detector_area_resol_mean   9.091

_computing_data_collection        
'COLLECT (Hooft, R.W.W., 1998)'
_computing_cell_refinement        
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
#Although determined using DirAx, the cell is refined in the HKL
#package during data reduction
_computing_data_reduction         
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)' 

Software References

Unit Cell Determination using DirAx:
Duisenberg AJM. Indexing in Single-Crystal Diffractometry with an Obstinate List of Reflections. Journal of Applied Crystallography 1992; 25: 92-96.
Duisenberg AJM, Hooft RWW, Schreurs AMM, Kroon J. Accurate cells from area-detector images. Journal of Applied Crystallography 2000; 33: 893-898.

Diffractometer control and strategy calculation using COLLECT:
Hooft RWW. COLLECT data collection software, Nonius B.V., 1998.

Standard Data Reduction using HKL(Denzo & Scalepack):
Otwinowski Z, Minor W. Processing of X-ray diffraction data collected in oscillation mode. Macromolecular Crystallography, Pt A. 1997; 276: 307-326.

Absorption Correction
Sheldrick, G. M. (2003). SADABS. Version 2.10. Bruker AXS Inc., Madison, Wisconsin, USA.

Non-Standard Data Reduction using EvalCCD:
Duisenberg AJM, Kroon-Batenburg LMJ, Schreurs AMM. An intensity evaluation method: EVAL-14. Journal of Applied Crystallography 2003; 36: 220-229.

For more information visit the service web site at: http://www.soton.ac.uk/~xservice/