EPSRC National Crystallography Service
Data Collection Summary kccd2 (damien)


Summary report for Directory: home/diska/07skc0011

Report generated Feb 15, 2007; 18:02:55

Unit cell

3364 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)7.7811 +/- 0.0003
b (Angstrom)22.3581 +/- 0.0011
c (Angstrom)9.1959 +/- 0.0005
alpha (°) 90.000
beta (°)103.327 +/- 0.003
gamma (°) 90.000
Volume (A**3)1556.73 +/- 0.13
Mosaicity (°)0.888 +/- 0.003

Data collection

Summary

Total number of images collected272
Total exposure time270.7 minutes
Data collection exposure time265.4 minutes
Data collection wall-clock time283.6 minutes

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 collections01f161241.5° phi1.500°60 secondsYes
data collections02f33 49.5° omega1.500°60 secondsYes
data collections03f70105.0° omega1.500°60 secondsYes
Phi/Chii01f - i08f840 seconds

Scalepack Scaling

Deleted observations

Rejected 466
Zero sigma or profile test   4
Overload or incomplete profile 612
Sigma cutoff 446
High resolution limit  43

Final Data Set

Scale factor range5.97-10.64
Number of 'full' reflections  4437
Number of 'partial' reflections 13609
Total number of integrated reflections 15599
Total number of unique reflections  3582
Data completeness  97.6%
Resolution range7.00-0.77 A
Theta range2.91°-27.48°
Average Intensity   35.3
Average Sigma(I)    1.7
Overall R-merge (linear)  0.117

Sadabs Results

Parameter refinement on 10438 reflections reduced R(int) from 0.2039 to 0.0736

Before rejection, 17590 reflections total and 3668 unique

After rejection, 14939 reflections total and 3653 unique

Runs

  Run 2-theta  R(int)  Incid. factors  Diffr. factors    K     Total I>2sig(I)
    1   12.6  0.0897   0.677 - 1.165   0.930 - 1.106   2.015    9244    5310
    2   12.0  0.1071   3.230 - 3.945   1.002 - 1.149   2.154    1787     877
    3   12.0  0.0801   0.437 - 0.662   0.951 - 1.138   1.936    3908    2322
Ratio of minimum to maximum apparent transmission: 0.809331

Metadata

  Group    Mike Hursthouse  
  Operator   Sam Callear  
  Sample Owner     
  Local Code   wp7 h5  
  Formula   C9H14O5N2  
  Crystal Colour    Colourless  
  Crystal Habit    Block  
  Crystal Size   0.13 x 0.06 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/