EPSRC National Crystallography Service
Data Collection Summary kccd2 (damien)


Summary report for Directory: home/diska/2005src1567

Report generated Nov 30, 2005; 14:02:34

Unit cell

2350 reflections with 2.91°<theta<27.48° (resolution between 7.00A and 0.77A) were used for unit cell refinement

Symmetry used
in scalepack
i4
a (Angstrom)16.8135 +/- 0.0005
b (Angstrom)16.8135 +/- 0.0005
c (Angstrom)13.9952 +/- 0.0005
alpha (°) 90.000
beta (°) 90.000
gamma (°) 90.000
Volume (A**3)3956.4 +/- 0.2
Mosaicity (°)0.672 +/- 0.002

Data collection

Summary

Total number of images collected179
Total exposure time116.0 minutes
Data collection exposure time114.6 minutes
Data collection wall-clock time131.5 minutes

Experimental Conditions

Wavelength0.71073 A
Crystal to detector distance40.00 mm

Scans

TypeName# imagesTotal
Rotation
Per frame
Rotation
Exposure
per frame
Used in
scaling
data collections01f47 94.0° phi2.000°40 secondsYes
data collections02f62124.0° omega2.000°40 secondsYes
data collections03f62124.0° omega2.000°40 secondsYes
Phi/Chii01f - i08f810 seconds

Scalepack Scaling

Deleted observations

Rejected 103
Zero sigma or profile test   1
Overload or incomplete profile 682
Sigma cutoff   8
Low resolution limit   1
High resolution limit   8

Final Data Set

Scale factor range8.67-12.63
Number of 'full' reflections  9578
Number of 'partial' reflections  8039
Total number of integrated reflections 16845
Total number of unique reflections  2359
Data completeness  99.9%
Resolution range7.00-0.77 A
Theta range2.91°-27.48°
Average Intensity   81.4
Average Sigma(I)    2.2
Overall R-merge (linear)  0.059

Sadabs Results

Parameter refinement on 12929 reflections reduced R(int) from 0.1130 to 0.0469

Before rejection, 16529 reflections total and 2366 unique

After rejection, 16313 reflections total and 2365 unique

Runs

  Run 2-theta  R(int)  Incid. factors  Diffr. factors    K     Total I>2sig(I)
    1   15.6  0.0509   0.685 - 0.841   0.956 - 1.212   1.447    4286    3509
    2  -15.0  0.0522   0.587 - 0.976   0.919 - 1.285   1.424    6016    4855
    3  -15.0  0.0562   1.124 - 1.383   0.943 - 1.270   1.471    6011    4701
Ratio of minimum to maximum apparent transmission: 0.715341

Metadata

  Group    Service  
  Operator   Peter Horton  
  Sample Owner   Dr. N. Greeves  
  Local Code   382/8+9  
  Formula   C21 H34 O1  
  Crystal Colour    Colourless  
  Crystal Habit    Shard  
  Crystal Size   0.32 x 0.16 x 0.09 (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/