EPSRC National Crystallography Service
Data Collection Summary kccd1 (dellboy)

Summary report for Directory: diska/2008lsh011

Report generated Jun 21, 2008; 18:35:19

Unit cell

46157 reflections with 2.91°<theta<27.48° (resolution between 7.00A and 0.77A) were used for unit cell refinement

Symmetry used
in scalepack
a (Angstrom)9.7285 +/- 0.0005
b (Angstrom)13.3392 +/- 0.0007
c (Angstrom)12.9849 +/- 0.0005
alpha (°) 90.000
beta (°)103.791 +/- 0.003
gamma (°) 90.000
Volume (A**3)1636.48 +/- 0.14
Mosaicity (°)1.374 +/- 0.002

Data collection


Total number of images collected225
Total exposure time146.8 minutes
Data collection exposure time145.4 minutes
Data collection wall-clock time182.8 minutes

Experimental Conditions

Wavelength0.71073 A
Crystal to detector distance30.00 mm


TypeName# imagesTotal
Per frame
per frame
Used in
data collections01f178356.0° phi2.000°40 secondsYes
data collections02f16 32.0° omega2.000°40 secondsYes
data collections03f23 46.0° omega2.000°40 secondsYes
Phi/Chii01f - i08f810 seconds

Scalepack Scaling

Deleted observations

Rejected  37
Overload or incomplete profile 934
Sigma cutoff  61
High resolution limit  17

Final Data Set

Scale factor10.00
Number of 'full' reflections  4338
Number of 'partial' reflections 22114
Total number of integrated reflections 24772
Total number of unique reflections  3901
Data completeness  99.5%
Resolution range7.00-0.77 A
Theta range2.91°-27.48°
Average Intensity  128.9
Average Sigma(I)    3.4
Overall R-merge (linear)  0.056

Sadabs Results

Estimated minimum and maximum transmission: 0.6333 0.7456


  Group    Mike Hursthouse  
  Operator   Susanne Huth  
  Sample Owner     
  Local Code   MAA/NO2  
  Formula   C8 H8 N2 O3  
  Crystal Colour    Colourless  
  Crystal Habit   Cut Prism  
  Crystal Size   0.3 x 0.2 x 0.2 (mm3) 
  Temperature   120(K) 
  Generator   50 (kV)   85 (mA) 
  Primary Solvent     
  Other Solvents     

File Explanations

      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 2007/2 (Sheldrick, G.M., 2007)'

_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 Roper CCD camera on \k-goniostat'
_diffrn_measurement_method          '\f & \w scans'
_diffrn_detector_area_resol_mean   '9.091'

'COLLECT (Hooft, R.W.W., 1998)'
'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
'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. (2007). SADABS. Version 2007/2. 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/