EPSRC National Crystallography Service
Data Collection Summary kccd2 (damien)


Summary report for Directory: home/diska/04skc0007

Report generated Aug 28, 2004; 09:58:07

Unit cell

a (Angstrom)7.3760 +/- 0.0015
b (Angstrom)7.624 +/- 0.002
c (Angstrom)10.211 +/- 0.003
alpha (°)88.86 +/- 0.03
beta (°)71.015 +/- 0.015
gamma (°)82.34 +/- 0.02
Volume (A**3)538.0 +/- 0.2

Data collection

Summary

Total number of images collected302
Total exposure time16.5 hours
Data collection exposure time16.4 hours
Data collection wall-clock time16.8 hours

Experimental Conditions

Wavelength0.71073 A
Crystal to detector distance32.00 mm

Scans

TypeName# imagesTotal
Rotation
Per frame
Rotation
Exposure
per frame
data collections01f179358.0° phi2.000°200 seconds
data collections02f23 46.0° omega2.000°200 seconds
data collections03f18 36.0° omega2.000°200 seconds
data collections04f18 36.0° omega2.000°200 seconds
data collections05f56112.0° omega2.000°200 seconds
Phi/Chii01f - i08f880 seconds

Sadabs Results

Parameter refinement on 4525 reflections reduced R(int) from 0.2073 to 0.0892

Before rejection, 9793 reflections total and 2056 unique

After rejection, 9408 reflections total and 2055 unique

Runs

  Run 2-theta  R(int)  Incid. factors  Diffr. factors    K     Total I>2sig(I)
    1    5.8  0.1336   0.835 - 1.561   0.840 - 1.790   1.289    5925    3132
    2   -5.3  0.0612   0.307 - 0.372   0.815 - 1.159   0.895     622     561
    3   -5.3  0.1872   0.339 - 0.379   0.916 - 1.345   1.306     543     259
    4   -5.3  0.1826   0.791 - 1.051   0.954 - 1.373   1.354     512     200
    5   -5.3  0.1930   0.606 - 1.121   0.816 - 1.395   1.400    1806     795
Ratio of minimum to maximum apparent transmission: 0.455325

Metadata

  Group    Mike Hursthouse  
  Operator   Sam Callear  
  Sample Owner     
  Local Code   TLT374D E7  
  Formula   C8H12O6N2  
  Crystal Colour    Colourless  
  Crystal Habit    Block  
  Crystal Size   0.12 x 0.1 x 0.06 (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/