EPSRC National Crystallography Service
Data Collection Summary kccd2 (damien)


Summary report for Directory: home/diska/2007may0011

Report generated Jul 08, 2007; 12:07:40

Unit cell

16010 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)6.2391 +/- 0.0002
b (Angstrom)13.8231 +/- 0.0005
c (Angstrom)6.4019 +/- 0.0002
alpha (°) 90.000
beta (°)96.887 +/- 0.002
gamma (°) 90.000
Volume (A**3)548.14 +/- 0.03
Mosaicity (°)0.843 +/- 0.002

Data collection

Summary

Total number of images collected439
Total exposure time74.8 minutes
Data collection exposure time74.1 minutes
Data collection wall-clock time92.9 minutes

Experimental Conditions

Wavelength0.71073 A
Crystal to detector distance30.00 mm

Scans

TypeName# imagesTotal
Rotation
Per frame
Rotation
Exposure
per frame
Used in
scaling
data collections01f100100.0° omega1.000°10 secondsYes
data collections02f95 95.0° omega1.000°10 secondsYes
data collections03f49 49.0° omega1.000°10 secondsYes
data collections04f89 89.0° omega1.000°10 secondsYes
data collections05f98 98.0° omega1.000°10 secondsYes
Phi/Chii01f - i08f85 seconds

Scalepack Scaling

Deleted observations

Rejected   2
Zero sigma or profile test   4
Overload or incomplete profile 404
Sigma cutoff 100
High resolution limit  74

Final Data Set

Scale factor10.00
Number of 'full' reflections   419
Number of 'partial' reflections  7488
Total number of integrated reflections  7237
Total number of unique reflections  1298
Data completeness  99.5%
Resolution range7.00-0.77 A
Theta range2.91°-27.48°
Average Intensity  538.7
Average Sigma(I)    9.1
Overall R-merge (linear)  0.063

Sadabs Results

Parameter refinement on 6556 reflections reduced R(int) from 0.0597 to 0.0444

Before rejection, 7457 reflections total and 1316 unique

After rejection, 6963 reflections total and 1313 unique

Runs

  Run 2-theta  R(int)  Incid. factors  Diffr. factors    K     Total I>2sig(I)
    1    5.9  0.0381   0.662 - 0.753   0.918 - 1.061   2.002    1691    1505
    2   10.2  0.0445   0.992 - 1.171   0.961 - 1.100   2.265    1517    1316
    3   10.2  0.0541   1.278 - 1.600   0.953 - 1.071   2.199     761     652
    4   10.2  0.0436   0.817 - 1.007   0.953 - 1.188   2.119    1412    1241
    5   10.2  0.0417   0.832 - 0.997   0.937 - 1.063   2.198    1582    1382
Ratio of minimum to maximum apparent transmission: 0.772233

Metadata

  Group    Mike Hursthouse  
  Operator   Peter Horton  
  Sample Owner     
  Local Code   CC 27001  
  Formula   C5 H5 N2 O3  
  Crystal Colour    Colourless  
  Crystal Habit   Cut Block  
  Crystal Size   0.08 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 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/