EPSRC National Crystallography Service
Data Collection Summary kccd2 (damien)


Summary report for Directory: home/diska/2005src1028

Report generated Sep 05, 2005; 13:03:26

Unit cell

2582 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)5.3882 +/- 0.0003
b (Angstrom)10.8859 +/- 0.0007
c (Angstrom)11.6240 +/- 0.0007
alpha (°)115.884 +/- 0.003
beta (°)103.171 +/- 0.004
gamma (°)93.883 +/- 0.004
Volume (A**3)586.29 +/- 0.07
Mosaicity (°)1.893 +/- 0.004

Data collection

Summary

Total number of images collected311
Total exposure time103.5 minutes
Data collection exposure time102.1 minutes
Data collection wall-clock time127.6 minutes

Experimental Conditions

Wavelength0.71073 A
Crystal to detector distance30.00 mm

Scans

TypeName# imagesTotal
Rotation
Per frame
Rotation
Exposure
per frame
Used in
scaling
data collections01f179358.0° phi2.000°20 secondsYes
data collections02f16 32.0° omega2.000°20 secondsYes
data collections03f54108.0° omega2.000°20 secondsYes
data collections04f54108.0° omega2.000°20 secondsYes
Phi/Chii01f - i08f810 seconds

Scalepack Scaling

Deleted observations

Rejected 162
Overload or incomplete profile 776
Sigma cutoff  35
High resolution limit  70

Final Data Set

Scale factor range9.63-15.31
Number of 'full' reflections   144
Number of 'partial' reflections 12940
Total number of integrated reflections 12097
Total number of unique reflections  2667
Data completeness  99.6%
Resolution range7.00-0.77 A
Theta range2.91°-27.48°
Average Intensity  217.6
Average Sigma(I)    5.8
Overall R-merge (linear)  0.047

Sadabs Results

Parameter refinement on 10671 reflections reduced R(int) from 0.0807 to 0.0488

Before rejection, 12347 reflections total and 2683 unique

After rejection, 12164 reflections total and 2683 unique

Runs

  Run 2-theta  R(int)  Incid. factors  Diffr. factors    K     Total I>2sig(I)
    1    7.4  0.0404   0.960 - 1.216   0.933 - 1.443   1.444    7269    6448
    2   -6.8  0.0447   0.880 - 0.953   0.939 - 1.244   1.383     533     479
    3   -6.8  0.0491   0.486 - 0.625   0.933 - 1.279   1.428    2209    1955
    4   -6.8  0.1009   0.883 - 1.329   0.943 - 1.382   1.667    2153    1867
Ratio of minimum to maximum apparent transmission: 0.646622

Metadata

  Group    Service  
  Operator   Simon Coles  
  Sample Owner   Skabara  
  Local Code   SeF4  
  Formula   C26H30F4Se2  
  Crystal Colour    Colourless  
  Crystal Habit    Blade  
  Crystal Size   0.24 x 0.04 x 0.01 (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/