EPSRC National Crystallography Service
Data Collection Summary kccd2 (damien)


Summary report for Directory: diska/2008lsh039

Report generated Jul 14, 2008; 14:32:44

Unit cell

9640 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)4.9076 +/- 0.0005
b (Angstrom)9.7504 +/- 0.0008
c (Angstrom)18.6116 +/- 0.0011
alpha (°) 90.000
beta (°) 90.000
gamma (°) 90.000
Volume (A**3)890.58 +/- 0.13
Mosaicity (°)1.535 +/- 0.005

Data collection

Summary

Total number of images collected154
Total exposure time57.6 minutes
Data collection exposure time56.3 minutes
Data collection wall-clock time62.2 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 collections01f51 96.9° omega1.900°23 secondsYes
data collections02f50 95.0° omega1.900°23 secondsYes
data collections03f45 85.5° omega1.900°23 secondsYes
Phi/Chii01f - i08f810 seconds

Scalepack Scaling

Deleted observations

Rejected   2
Overload or incomplete profile 548
Sigma cutoff  83
High resolution limit  17

Final Data Set

Scale factor10.00
Number of 'full' reflections   316
Number of 'partial' reflections  4946
Total number of integrated reflections  3480
Total number of unique reflections  1107
Data completeness  89.9%
Resolution range7.00-0.77 A
Theta range2.91°-27.48°
Average Intensity  328.7
Average Sigma(I)    8.5
Overall R-merge (linear)  0.115

Sadabs Results

Parameter refinement on 4502 reflections reduced R(int) from 0.2111 to 0.0698

Before rejection, 4976 reflections total and 1193 unique

After rejection, 4208 reflections total and 1167 unique

Runs

  Run 2-theta  R(int)  Incid. factors  Diffr. factors    K     Total I>2sig(I)
    1    2.2  0.0627   1.089 - 1.688   0.637 - 1.319   2.172    1852    1738
    2   10.2  0.0578   0.546 - 0.771   0.851 - 1.349   2.278     983     894
    3   10.2  0.0533   0.514 - 0.954   0.644 - 1.320   1.997    1373    1293
Ratio of minimum to maximum apparent transmission: 0.471793

Metadata

  Group    Mike Hursthouse  
  Operator   Susanne Huth  
  Sample Owner     
  Local Code   MAA/I  
  Formula   C8 H8 I1 N1 O1  
  Crystal Colour    Colourless  
  Crystal Habit    Needle  
  Crystal Size   0.4 x 0.04 x 0.02 (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/