EPSRC National Crystallography Service
Data Collection Summary kccd2 (damien)


Summary report for Directory: home/diska/07skc0032

Report generated Jul 22, 2007; 16:57:22

Unit cell

40557 reflections with 2.91°<theta<27.48° (resolution between 7.00A and 0.77A) were used for unit cell refinement

Symmetry used
in scalepack
p2
a (Angstrom)13.5578 +/- 0.0005
b (Angstrom)9.1913 +/- 0.0003
c (Angstrom)25.2768 +/- 0.0009
alpha (°) 90.000
beta (°)105.2322 +/- 0.0016
gamma (°) 90.000
Volume (A**3)3039.18 +/- 0.19
Mosaicity (°)0.694 +/- 0.002

Data collection

Summary

Total number of images collected371
Total exposure time281.2 minutes
Data collection exposure time277.2 minutes
Data collection wall-clock time293.2 minutes

Experimental Conditions

Wavelength0.71073 A
Crystal to detector distance35.00 mm

Scans

TypeName# imagesTotal
Rotation
Per frame
Rotation
Exposure
per frame
Used in
scaling
data collections01f168218.4° phi1.300°45 secondsYes
data collections02f78101.4° omega1.300°45 secondsYes
data collections03f74 96.2° omega1.300°45 secondsYes
data collections04f43 55.9° omega1.300°45 secondsYes
Phi/Chii01f - i08f830 seconds

Scalepack Scaling

Deleted observations

Rejected   3
Zero sigma or profile test   1
Overload or incomplete profile1088
Sigma cutoff1447
High resolution limit 334

Final Data Set

Scale factor10.00
Number of 'full' reflections 12025
Number of 'partial' reflections 26552
Total number of integrated reflections 33705
Total number of unique reflections  7286
Data completeness  99.4%
Resolution range7.00-0.77 A
Theta range2.91°-27.48°
Average Intensity   27.8
Average Sigma(I)    2.1
Overall R-merge (linear)  0.221

Sadabs Results

Parameter refinement on 18622 reflections reduced R(int) from 0.1409 to 0.0634

Before rejection, 36956 reflections total and 7421 unique

After rejection, 31753 reflections total and 7381 unique

Runs

  Run 2-theta  R(int)  Incid. factors  Diffr. factors    K     Total I>2sig(I)
    1   15.1  0.1213   0.765 - 1.260   0.943 - 1.104   2.084   14791    6814
    2   14.6  0.0992   0.794 - 1.389   0.978 - 1.132   2.035    6892    3396
    3   14.6  0.1107   0.820 - 1.006   0.926 - 1.097   2.024    6414    3039
    4   14.6  0.0960   0.438 - 0.487   0.929 - 1.029   1.977    3656    1883
Ratio of minimum to maximum apparent transmission: 0.817769

Metadata

  Group    Mike Hursthouse  
  Operator   Sam Callear  
  Sample Owner     
  Local Code   WU tetMeBuam Suc A rep  
  Formula   C12H23O4N1  
  Crystal Colour    Colourless  
  Crystal Habit    Plate  
  Crystal Size   0.15 x 0.05 x 0.01 (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 2007/2 (Sheldrick, G.M., 2007)'

_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 APEX II CCD camera on \k-goniostat'
_diffrn_measurement_method          '\f & \w scans'
_diffrn_detector_area_resol_mean   '4096x4096pixels / 62x62mm'

_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. (2007). SADABS. Version 2007/2. 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/