EPSRC National Crystallography Service
Data Collection Summary kccd2 (damien)


Summary report for Directory: diska/2009src0116

Report generated Feb 13, 2009; 10:37:27

Unit cell

11190 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)9.3511 +/- 0.0002
b (Angstrom)14.5157 +/- 0.0004
c (Angstrom)10.4670 +/- 0.0002
alpha (°) 90.000
beta (°)90.7779 +/- 0.0015
gamma (°) 90.000
Volume (A**3)1420.64 +/- 0.06
Mosaicity (°)0.4510 +/- 0.0010

Data collection

Summary

Total number of images collected218
Total exposure time51.2 minutes
Data collection exposure time50.1 minutes
Data collection wall-clock time59.3 minutes

Experimental Conditions

Wavelength0.71073 A
Crystal to detector distance31.00 mm

Scans

TypeName# imagesTotal
Rotation
Per frame
Rotation
Exposure
per frame
Used in
scaling
data collections01f121242.0° phi2.000°14 secondsYes
data collections02f13 26.0° omega2.000°14 secondsYes
data collections03f24 48.0° omega2.000°14 secondsYes
data collections04f52104.0° omega2.000°14 secondsYes
Phi/Chii01f - i08f88 seconds

Scalepack Scaling

Deleted observations

Rejected   1
Zero sigma or profile test   2
Overload or incomplete profile 598
Sigma cutoff 110
High resolution limit  10

Final Data Set

Scale factor10.00
Number of 'full' reflections 12660
Number of 'partial' reflections  6207
Total number of integrated reflections 18030
Total number of unique reflections  3386
Data completeness 100.0%
Resolution range7.00-0.77 A
Theta range2.91°-27.48°
Average Intensity  189.0
Average Sigma(I)    3.5
Overall R-merge (linear)  0.059

Sadabs Results

Parameter refinement on 15185 reflections reduced R(int) from 0.0537 to 0.0415

Before rejection, 17721 reflections total and 3388 unique

After rejection, 16121 reflections total and 3385 unique

Runs

  Run 2-theta  R(int)  Incid. factors  Diffr. factors    K     Total I>2sig(I)
    1   11.7  0.0419   0.893 - 1.023   0.981 - 1.072   2.274    9376    7989
    2   11.1  0.0301   0.760 - 0.815   1.004 - 1.035   2.141     887     753
    3   11.1  0.0321   0.651 - 0.685   1.003 - 1.064   2.124    1787    1511
    4   11.1  0.0330   0.909 - 1.093   0.988 - 1.065   2.099    4071    3493
Ratio of minimum to maximum apparent transmission: 0.915404

Metadata

  Group    Service  
  Operator   Peter Horton  
  Sample Owner   Dr MA Beckett  
  Local Code   MAB/JT/21  
  Formula   C7 H14 N1 B5 O10  
  Crystal Colour    Colourless  
  Crystal Habit    Block  
  Crystal Size   0.16 x 0.16 x 0.14 (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/