EPSRC National Crystallography Service
Data Collection Summary kccd2 (damien)


Summary report for Directory: home/diska/07skc0021

Report generated Feb 18, 2007; 18:25:36

Unit cell

1991 reflections with 2.91°<theta<27.48° (resolution between 7.00A and 0.77A) were used for unit cell refinement

Symmetry used
in scalepack
p1
a (Angstrom)7.2810 +/- 0.0004
b (Angstrom)7.9338 +/- 0.0005
c (Angstrom)9.4913 +/- 0.0006
alpha (°)67.211 +/- 0.003
beta (°)76.452 +/- 0.003
gamma (°)67.849 +/- 0.004
Volume (A**3)465.66 +/- 0.05
Mosaicity (°)0.695 +/- 0.003

Data collection

Summary

Total number of images collected314
Total exposure time208.3 minutes
Data collection exposure time205.6 minutes
Data collection wall-clock time218.9 minutes

Experimental Conditions

Wavelength0.71073 A
Crystal to detector distance36.00 mm

Scans

TypeName# imagesTotal
Rotation
Per frame
Rotation
Exposure
per frame
Used in
scaling
data collections01f181362.0° phi2.000°40 secondsYes
data collections02f13 26.0° omega2.000°40 secondsYes
data collections03f56112.0° omega2.000°40 secondsYes
data collections04f28 56.0° omega2.000°40 secondsYes
data collections05f28 56.0° omega2.000°40 secondsYes
Phi/Chii01f - i08f820 seconds

Scalepack Scaling

Deleted observations

Rejected 318
Zero sigma or profile test   1
Overload or incomplete profile 234
Sigma cutoff  72
High resolution limit  87

Final Data Set

Scale factor range9.47-18.70
Number of 'full' reflections  3767
Number of 'partial' reflections  3373
Total number of integrated reflections  6665
Total number of unique reflections  2091
Data completeness  98.6%
Resolution range7.00-0.77 A
Theta range2.91°-27.48°
Average Intensity   79.9
Average Sigma(I)    2.2
Overall R-merge (linear)  0.063

Sadabs Results

Parameter refinement on 5659 reflections reduced R(int) from 0.2252 to 0.0479

Before rejection, 7077 reflections total and 2162 unique

After rejection, 6449 reflections total and 2149 unique

Runs

  Run 2-theta  R(int)  Incid. factors  Diffr. factors    K     Total I>2sig(I)
    1   15.9  0.0521   0.558 - 1.408   0.961 - 1.093   2.219    3864    3089
    2   15.4  0.0391   0.378 - 0.407   1.018 - 1.098   2.066     233     195
    3   15.4  0.0421   0.824 - 1.255   0.961 - 1.064   2.067    1205    1008
    4   15.4  0.0340   0.867 - 1.021   0.966 - 1.063   2.068     582     468
    5   15.4  0.0346   0.809 - 0.996   1.010 - 1.098   2.102     565     463
Ratio of minimum to maximum apparent transmission: 0.875003

Metadata

  Group    Mike Hursthouse  
  Operator   Sam Callear  
  Sample Owner     
  Local Code   wp8 e10  
  Formula   C9H15O5N1  
  Crystal Colour    Colourless  
  Crystal Habit    Block  
  Crystal Size   0.17 x 0.09 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    '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/