EPSRC National Crystallography Service
Data Collection Summary kccd2 (damien)


Summary report for Directory: home/diska/06skc0047

Report generated Sep 05, 2006; 13:28:27

Unit cell

4427 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)8.1280 +/- 0.0006
b (Angstrom)9.1295 +/- 0.0007
c (Angstrom)13.7382 +/- 0.0012
alpha (°)89.785 +/- 0.005
beta (°)89.173 +/- 0.004
gamma (°)79.787 +/- 0.005
Volume (A**3)1003.18 +/- 0.14
Mosaicity (°)1.362 +/- 0.004

Data collection

Summary

Total number of images collected298
Total exposure time256.4 minutes
Data collection exposure time252.3 minutes
Data collection wall-clock time279.9 minutes

Experimental Conditions

Wavelength0.71073 A
Crystal to detector distance31.00 mm

Scans

TypeName# imagesTotal
Rotation
Per frame
Rotation
Exposure
per frame
Used in
scaling
data collections01f181362.0° phi2.000°52 secondsYes
data collections02f16 32.0° omega2.000°52 secondsYes
data collections03f16 32.0° omega2.000°52 secondsYes
data collections04f54108.0° omega2.000°52 secondsYes
data collections05f23 46.0° omega2.000°52 secondsYes
Phi/Chii01f - i08f830 seconds

Scalepack Scaling

Deleted observations

Rejected 473
Zero sigma or profile test   5
Overload or incomplete profile1010
Sigma cutoff  22
High resolution limit 472

Final Data Set

Scale factor range7.66-17.27
Number of 'full' reflections  3463
Number of 'partial' reflections 17141
Total number of integrated reflections 19380
Total number of unique reflections  4528
Data completeness  99.8%
Resolution range7.00-0.77 A
Theta range2.91°-27.48°
Average Intensity   17.8
Average Sigma(I)    1.4
Overall R-merge (linear)  0.141

Sadabs Results

Parameter refinement on 10639 reflections reduced R(int) from 0.2050 to 0.0905

Before rejection, 19347 reflections total and 4664 unique

After rejection, 18864 reflections total and 4664 unique

Runs

  Run 2-theta  R(int)  Incid. factors  Diffr. factors    K     Total I>2sig(I)
    1    8.3  0.1360   0.935 - 1.907   0.948 - 1.658   1.411   12053    6854
    2   -7.8  0.0997   0.262 - 0.304   0.949 - 1.112   1.288     922     623
    3   -7.8  0.0958   0.246 - 0.302   0.963 - 1.524   1.258     953     653
    4   -7.8  0.0967   0.851 - 1.158   0.957 - 1.092   1.306    3598    2323
    5   -7.8  0.1449   0.279 - 0.339   0.957 - 1.715   1.548    1338     855
Ratio of minimum to maximum apparent transmission: 0.552539

Metadata

  Group    Mike Hursthouse  
  Operator   Sam Callear  
  Sample Owner     
  Local Code   wp7 b4  
  Formula   C9H14O4N2  
  Crystal Colour    Colourless  
  Crystal Habit    Lath  
  Crystal Size   0.1 x 0.06 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    '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/