EPSRC National Crystallography Service
Data Collection Summary kccd2 (damien)


Summary report for Directory: home/diska/07skc0027

Report generated May 09, 2007; 09:30:54

Unit cell

1011 reflections with 2.91°<theta<27.48° (resolution between 7.00A and 0.77A) were used for unit cell refinement

Symmetry used
in scalepack
p222
a (Angstrom)3.9532 +/- 0.0005
b (Angstrom)11.497 +/- 0.002
c (Angstrom)18.703 +/- 0.003
alpha (°) 90.000
beta (°) 90.000
gamma (°) 90.000
Volume (A**3)850.0 +/- 0.2
Mosaicity (°)1.959 +/- 0.007

Data collection

Summary

Total number of images collected164
Total exposure time127.7 minutes
Data collection exposure time124.3 minutes
Data collection wall-clock time137.1 minutes

Experimental Conditions

Wavelength0.71073 A
Crystal to detector distance33.00 mm

Scans

TypeName# imagesTotal
Rotation
Per frame
Rotation
Exposure
per frame
Used in
scaling
data collections01f72136.8° phi1.900°47 secondsYes
data collections02f34 64.6° omega1.900°47 secondsYes
data collections03f50 95.0° omega1.900°47 secondsYes
Phi/Chii01f - i08f825 seconds

Scalepack Scaling

Deleted observations

Rejected 103
Overload or incomplete profile 304
Sigma cutoff 264
High resolution limit  50

Final Data Set

Scale factor range10.00-12.73
Number of 'full' reflections     0
Number of 'partial' reflections  6644
Total number of integrated reflections  4908
Total number of unique reflections  1139
Data completeness  94.8%
Resolution range7.00-0.77 A
Theta range2.91°-27.48°
Average Intensity   47.9
Average Sigma(I)    2.7
Overall R-merge (linear)  0.095

Sadabs Results

Parameter refinement on 4323 reflections reduced R(int) from 0.1359 to 0.0616

Before rejection, 6617 reflections total and 1209 unique

After rejection, 5732 reflections total and 1204 unique

Runs

  Run 2-theta  R(int)  Incid. factors  Diffr. factors    K     Total I>2sig(I)
    1   13.5  0.0824   0.760 - 1.142   0.907 - 1.308   2.064    2693    1761
    2   12.9  0.0748   0.770 - 0.936   0.876 - 1.298   2.093    1223     699
    3   12.9  0.0772   0.771 - 0.883   0.912 - 1.315   2.124    1816    1108
Ratio of minimum to maximum apparent transmission: 0.666268

Metadata

  Group    Mike Hursthouse  
  Operator   Sam Callear  
  Sample Owner     
  Local Code   2Meimdz MalA WU  
  Formula   C7H10O4N2  
  Crystal Colour    Colourless  
  Crystal Habit    Lath  
  Crystal Size   0.19 x 0.04 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/