EPSRC National Crystallography Service
Data Collection Summary kccd2 (damien)


Summary report for Directory: home/diska/05src0198

Report generated Feb 15, 2005; 14:34:03

Unit cell

4279 reflections with 2.91°<theta<27.48° (resolution between 7.00A and 0.77A) were used for unit cell refinement

Symmetry used
in scalepack
p2
a (Angstrom)11.5753 +/- 0.0005
b (Angstrom)9.3136 +/- 0.0004
c (Angstrom)17.2603 +/- 0.0007
alpha (°) 90.000
beta (°)102.111 +/- 0.003
gamma (°) 90.000
Volume (A**3)1819.38 +/- 0.13
Mosaicity (°)0.843 +/- 0.002

Data collection

Summary

Total number of images collected207
Total exposure time201.7 minutes
Data collection exposure time199.7 minutes
Data collection wall-clock time215.0 minutes

Experimental Conditions

Wavelength0.71073 A
Crystal to detector distance35.00 mm

Scans

TypeName# imagesTotal
Rotation
Per frame
Rotation
Exposure
per frame
Used in
scaling
data collections01f116232.0° phi2.000°60 secondsYes
data collections02f29 58.0° omega2.000°60 secondsYes
data collections03f54108.0° omega2.000°60 secondsYes
Phi/Chii01f - i08f815 seconds

Scalepack Scaling

Deleted observations

Rejected  92
Overload or incomplete profile 870
Sigma cutoff  21
High resolution limit  21

Final Data Set

Scale factor range8.66-12.92
Number of 'full' reflections  9452
Number of 'partial' reflections 12640
Total number of integrated reflections 21158
Total number of unique reflections  4426
Data completeness  99.8%
Resolution range7.00-0.77 A
Theta range2.91°-27.48°
Average Intensity   61.5
Average Sigma(I)    2.6
Overall R-merge (linear)  0.063

Sadabs Results

Parameter refinement on 13726 reflections reduced R(int) from 0.0931 to 0.0466

Before rejection, 20709 reflections total and 4444 unique

After rejection, 20430 reflections total and 4441 unique

Runs

  Run 2-theta  R(int)  Incid. factors  Diffr. factors    K     Total I>2sig(I)
    1   11.8  0.0594   0.725 - 0.984   0.936 - 1.384   1.414   11879    8434
    2  -11.2  0.0587   0.652 - 0.887   0.940 - 1.445   1.382    2889    2067
    3  -11.2  0.0648   1.084 - 1.423   0.938 - 1.134   1.399    5662    3908
Ratio of minimum to maximum apparent transmission: 0.647964

Metadata

  Group    Service  
  Operator   Peter Horton  
  Sample Owner   Dr. C. D. Gabbutt  
  Local Code   NAR 2-34  
  Formula   C21 H18 O2 S2  
  Crystal Colour    Colourless  
  Crystal Habit    Rod  
  Crystal Size   0.24 x 0.06 x 0.03 (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    '10cm confocal mirrors'
_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/