EPSRC National Crystallography Service
Data Collection Summary kccd1 (dellboy)


Summary report for Directory: diska/06skc0062

Report generated Oct 12, 2006; 17:22:02

Unit cell

3319 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)9.2008 +/- 0.0003
b (Angstrom)23.6311 +/- 0.0010
c (Angstrom)10.4061 +/- 0.0004
alpha (°) 90.000
beta (°)95.173 +/- 0.003
gamma (°) 90.000
Volume (A**3)2253.33 +/- 0.15
Mosaicity (°)0.645 +/- 0.002

Data collection

Summary

Total number of images collected362
Total exposure time232.6 minutes
Data collection exposure time230.0 minutes
Data collection wall-clock time258.5 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°15 seconds45.00 mmNo
data collections01f193250.9° phi1.300°39 seconds35.00 mmYes
data collections02f26 33.8° omega1.300°39 seconds35.00 mmYes
data collections03f43 55.9° omega1.300°39 seconds35.00 mmYes
data collections04f90117.0° omega1.300°39 seconds35.00 mmYes

Scalepack Scaling

Deleted observations

Rejected 121
Zero sigma or profile test   4
Overload or incomplete profile 704
Sigma cutoff  54
High resolution limit  16

Final Data Set

Scale factor range8.76-10.04
Number of 'full' reflections  8061
Number of 'partial' reflections 15980
Total number of integrated reflections 22321
Total number of unique reflections  3340
Data completeness 100.0%
Resolution range20.40-0.90 A
Theta range1.00°-23.26°
Average Intensity   21.1
Average Sigma(I)    1.1
Overall R-merge (linear)  0.080

Sadabs Results

Parameter refinement on 12242 reflections reduced R(int) from 0.0748 to 0.0467

Before rejection, 22980 reflections total and 3350 unique

After rejection, 22674 reflections total and 3348 unique

Runs

  Run 2-theta  R(int)  Incid. factors  Diffr. factors    K     Total I>2sig(I)
    1   11.8  0.0785   0.801 - 0.979   0.949 - 1.177   1.170   12648    7596
    2  -11.2  0.0775   0.478 - 0.508   0.961 - 1.025   1.151    1561     900
    3  -11.2  0.0713   1.570 - 1.682   0.935 - 1.108   1.174    2703    1563
    4  -11.2  0.0903   0.946 - 1.056   0.931 - 1.061   1.179    5762    3381
Ratio of minimum to maximum apparent transmission: 0.791076

Metadata

  Group    Mike Hursthouse  
  Operator   Sam Callear  
  Sample Owner     
  Local Code   wp14 h4  
  Formula   c10H12O4N1  
  Crystal Colour    Colourless  
  Crystal Habit    Plate  
  Crystal Size   0.32 x 0.18 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    '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/