EPSRC National Crystallography Service
Data Collection Summary kccd1 (dellboy)


Summary report for Directory: diska/04skc0005

Report generated Aug 27, 2004; 09:39:14

Unit cell

4219 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)7.5009 +/- 0.0002
b (Angstrom)7.7284 +/- 0.0002
c (Angstrom)16.3428 +/- 0.0005
alpha (°)88.2929 +/- 0.0018
beta (°)86.3862 +/- 0.0014
gamma (°)89.7975 +/- 0.0016
Volume (A**3)945.09 +/- 0.05
Mosaicity (°)0.344 +/- 0.002

Data collection

Summary

Total number of images collected344
Total exposure time5.7 hours
Data collection exposure time5.6 hours
Data collection wall-clock time6.2 hours

Experimental Conditions

Wavelength0.71073 A
Crystal to detector distance32.00 mm

Scans

TypeName# imagesTotal
Rotation
Per frame
Rotation
Exposure
per frame
Used in
scaling
data collections01f181362.0° phi2.000°60 secondsYes
data collections02f16 32.0° omega2.000°60 secondsYes
data collections03f57114.0° omega2.000°60 secondsYes
data collections04f25 50.0° omega2.000°60 secondsYes
data collections05f57114.0° omega2.000°60 secondsYes
Phi/Chii01f - i08f825 seconds

Scalepack Scaling

Deleted observations

Rejected  76
Overload or incomplete profile 488
Sigma cutoff  11
High resolution limit   9

Final Data Set

Scale factor range9.93-10.50
Number of 'full' reflections 16052
Number of 'partial' reflections  5406
Total number of integrated reflections 20862
Total number of unique reflections  4308
Data completeness  99.6%
Resolution range7.00-0.77 A
Theta range2.91°-27.48°
Average Intensity   21.4
Average Sigma(I)    1.1
Overall R-merge (linear)  0.051

Sadabs Results

Parameter refinement on 15719 reflections reduced R(int) from 0.0554 to 0.0415

Before rejection, 20587 reflections total and 4317 unique

After rejection, 20420 reflections total and 4315 unique

Runs

  Run 2-theta  R(int)  Incid. factors  Diffr. factors    K     Total I>2sig(I)
    1    9.3  0.0494   0.909 - 1.007   0.960 - 1.120   1.149   11199    9343
    2   -8.7  0.0442   0.633 - 0.672   0.987 - 1.112   1.084     877     733
    3   -8.7  0.0532   0.922 - 0.997   0.960 - 1.104   1.167    3432    2816
    4   -8.7  0.0520   0.905 - 0.959   0.962 - 1.090   1.114    1457    1217
    5   -8.7  0.0505   0.945 - 1.032   0.961 - 1.107   1.117    3455    2873
Ratio of minimum to maximum apparent transmission: 0.857154

Metadata

  Group    Mike Hursthouse  
  Operator   Sam Callear  
  Sample Owner     
  Local Code   TLT374B CD910  
  Formula   C9H18O6N2  
  Crystal Colour    Colourless  
  Crystal Habit    Fragment  
  Crystal Size   0.1 x 0.08 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/