EPSRC National Crystallography Service
Data Collection Summary kccd1 (dellboy)


Summary report for Directory: diska/04skc0010

Report generated Dec 04, 2004; 10:26:00

Unit cell

2550 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)7.2887 +/- 0.0004
b (Angstrom)7.3630 +/- 0.0006
c (Angstrom)11.6466 +/- 0.0010
alpha (°)106.348 +/- 0.004
beta (°)101.098 +/- 0.004
gamma (°)93.796 +/- 0.004
Volume (A**3)583.72 +/- 0.08
Mosaicity (°)0.463 +/- 0.003

Data collection

Summary

Total number of images collected303
Total exposure time15.8 hours
Data collection exposure time15.6 hours
Data collection wall-clock time16.2 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°190 secondsYes
data collections02f16 32.0° omega2.000°190 secondsYes
data collections03f16 32.0° omega2.000°190 secondsYes
data collections04f57114.0° omega2.000°190 secondsYes
data collections05f25 50.0° omega2.000°190 secondsYes
Phi/Chii01f - i08f8100 seconds

Scalepack Scaling

Deleted observations

Rejected  55
Zero sigma or profile test  89
Overload or incomplete profile 246
Sigma cutoff  24
High resolution limit  26

Final Data Set

Scale factor range9.14-10.01
Number of 'full' reflections  7686
Number of 'partial' reflections  3951
Total number of integrated reflections 11190
Total number of unique reflections  2652
Data completeness  99.1%
Resolution range7.00-0.77 A
Theta range2.91°-27.48°
Average Intensity    9.3
Average Sigma(I)    1.0
Overall R-merge (linear)  0.102

Sadabs Results

Parameter refinement on 5122 reflections reduced R(int) from 0.0661 to 0.0513

Before rejection, 11023 reflections total and 2666 unique

After rejection, 10813 reflections total and 2663 unique

Runs

  Run 2-theta  R(int)  Incid. factors  Diffr. factors    K     Total I>2sig(I)
    1    9.3  0.0950   0.832 - 0.992   0.883 - 1.097   1.202    6803    3753
    2   -8.7  0.1033   0.773 - 0.808   0.960 - 1.074   1.244     520     275
    3   -8.7  0.1034   0.910 - 0.990   0.963 - 1.089   1.165     527     303
    4   -8.7  0.1005   0.909 - 1.041   0.880 - 1.065   1.160    2108    1166
    5   -8.7  0.1012   0.854 - 0.937   0.906 - 1.098   1.211     855     444
Ratio of minimum to maximum apparent transmission: 0.801835

Metadata

  Group    Mike Hursthouse  
  Operator   Sam Callear  
  Sample Owner     
  Local Code   TLT374A AB34  
  Formula   C8H15O6N  
  Crystal Colour    Colourless  
  Crystal Habit    Plate  
  Crystal Size   0.01 x 0.09 x 0.08 (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/