EPSRC National Crystallography Service
Data Collection Summary kccd2 (damien)


Summary report for Directory: home/diska/07skc0020

Report generated Feb 18, 2007; 14:28:33

Unit cell

1854 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)5.7542 +/- 0.0006
b (Angstrom)14.858 +/- 0.003
c (Angstrom)10.1839 +/- 0.0015
alpha (°) 90.000
beta (°)100.799 +/- 0.009
gamma (°) 90.000
Volume (A**3)855.2 +/- 0.2
Mosaicity (°)1.981 +/- 0.006

Data collection

Summary

Total number of images collected251
Total exposure time166.0 minutes
Data collection exposure time163.3 minutes
Data collection wall-clock time173.8 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 collections01f176352.0° phi2.000°40 secondsYes
data collections02f13 26.0° omega2.000°40 secondsYes
data collections03f27 54.0° omega2.000°40 secondsYes
data collections04f27 54.0° omega2.000°40 secondsYes
Phi/Chii01f - i08f820 seconds

Scalepack Scaling

Deleted observations

Rejected 321
Zero sigma or profile test   3
Overload or incomplete profile 362
Sigma cutoff 320
High resolution limit 178

Final Data Set

Scale factor range8.20-12.39
Number of 'full' reflections     7
Number of 'partial' reflections 10911
Total number of integrated reflections  9182
Total number of unique reflections  1969
Data completeness  97.5%
Resolution range7.00-0.77 A
Theta range2.91°-27.48°
Average Intensity   23.3
Average Sigma(I)    1.3
Overall R-merge (linear)  0.125

Sadabs Results

Parameter refinement on 6170 reflections reduced R(int) from 0.2116 to 0.0684

Before rejection, 10435 reflections total and 2057 unique

After rejection, 8850 reflections total and 2047 unique

Runs

  Run 2-theta  R(int)  Incid. factors  Diffr. factors    K     Total I>2sig(I)
    1   15.1  0.0886   0.814 - 1.637   0.893 - 1.186   2.044    6583    3773
    2   14.6  0.0815   0.194 - 0.216   0.911 - 1.103   2.020     384     251
    3   14.6  0.1155   0.512 - 0.617   0.907 - 1.226   2.230     936     466
    4   14.6  0.0919   0.490 - 0.575   0.842 - 1.081   2.062     947     504
Ratio of minimum to maximum apparent transmission: 0.686541

Metadata

  Group    Mike Hursthouse  
  Operator   Sam Callear  
  Sample Owner     
  Local Code   wp11 g8  
  Formula   C10H20O4N2  
  Crystal Colour    Colourless  
  Crystal Habit    Lath  
  Crystal Size   0.2 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/