EPSRC National Crystallography Service
Data Collection Summary kccd1 (dellboy)


Summary report for Directory: diska/06skc0036

Report generated Aug 24, 2006; 10:15:31

Unit cell

1052 reflections with 1.00°<theta<23.26° (resolution between 20.40A and 0.90A) were used for unit cell refinement

Symmetry used
in scalepack
p2
a (Angstrom)9.6872 +/- 0.0005
b (Angstrom)6.5461 +/- 0.0003
c (Angstrom)10.8209 +/- 0.0005
alpha (°) 90.000
beta (°)102.698 +/- 0.003
gamma (°) 90.000
Volume (A**3)669.41 +/- 0.06
Mosaicity (°)0.587 +/- 0.003

Data collection

Summary

Total number of images collected214
Total exposure time140.1 minutes
Data collection exposure time136.7 minutes
Data collection wall-clock time153.1 minutes

Experimental Conditions

Wavelength0.71073 A

Scans

TypeName# imagesTotal
Rotation
Per frame
Rotation
Exposure
per frame
Detector
distance
Used in
scaling
cell determinationi01f10 10.0° phi1.000°20 seconds45.00 mmNo
data collections01f99198.0° phi2.000°40 seconds31.00 mmYes
data collections02f51102.0° omega2.000°40 seconds31.00 mmYes
data collections03f54108.0° omega2.000°40 seconds31.00 mmYes

Scalepack Scaling

Deleted observations

Rejected  32
Overload or incomplete profile 150
Sigma cutoff   8
High resolution limit  14

Final Data Set

Scale factor range9.72-10.63
Number of 'full' reflections  4351
Number of 'partial' reflections  3153
Total number of integrated reflections  7232
Total number of unique reflections  1056
Data completeness  99.7%
Resolution range20.40-0.90 A
Theta range1.00°-23.26°
Average Intensity   92.1
Average Sigma(I)    1.9
Overall R-merge (linear)  0.032

Sadabs Results

Parameter refinement on 5377 reflections reduced R(int) from 0.0580 to 0.0288

Before rejection, 7174 reflections total and 1062 unique

After rejection, 7124 reflections total and 1061 unique

Runs

  Run 2-theta  R(int)  Incid. factors  Diffr. factors    K     Total I>2sig(I)
    1    8.3  0.0302   1.095 - 1.229   0.958 - 1.126   1.188    3512    2744
    2   -7.8  0.0336   0.628 - 0.670   0.934 - 1.022   1.121    1746    1358
    3   -7.8  0.0338   1.011 - 1.142   0.956 - 1.069   1.136    1866    1480
Ratio of minimum to maximum apparent transmission: 0.829421

Metadata

  Group    Mike Hursthouse  
  Operator   Sam Callear  
  Sample Owner     
  Local Code   wp8 a7  
  Formula   C6H10O5N1  
  Crystal Colour    Colourless  
  Crystal Habit    Block  
  Crystal Size   0.24 x 0.18 x 0.1 (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    'graphite'
_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/