EPSRC National Crystallography Service
Data Collection Summary kccd2 (damien)


Summary report for Directory: diska/2009lsh011

Report generated Mar 02, 2009; 08:51:27

Unit cell

13424 reflections with 2.91°<theta<27.48° (resolution between 7.00A and 0.77A) were used for unit cell refinement

Symmetry used
in scalepack
c2
a (Angstrom)3.8456 +/- 0.0010
b (Angstrom)22.190 +/- 0.005
c (Angstrom)9.448 +/- 0.002
alpha (°) 90.000
beta (°)89.952 +/- 0.015
gamma (°) 90.000
Volume (A**3)806.2 +/- 0.3
Mosaicity (°)3.123 +/- 0.010

Data collection

Summary

Total number of images collected212
Total exposure time10.9 hours
Data collection exposure time10.8 hours
Data collection wall-clock time11.0 hours

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 collections01f50100.0° omega2.000°190 secondsYes
data collections02f51102.0° omega2.000°190 secondsYes
data collections03f47 94.0° omega2.000°190 secondsYes
data collections04f33 66.0° omega2.000°190 secondsYes
data collections05f23 46.0° omega2.000°190 secondsYes
Phi/Chii01f - i08f860 seconds

Scalepack Scaling

Deleted observations

Rejected   3
Zero sigma or profile test   9
Overload or incomplete profile 300
Sigma cutoff 348
High resolution limit  20

Final Data Set

Scale factor10.00
Number of 'full' reflections     0
Number of 'partial' reflections  4701
Total number of integrated reflections  3076
Total number of unique reflections   900
Data completeness  94.2%
Resolution range7.00-0.77 A
Theta range2.91°-27.48°
Average Intensity   91.8
Average Sigma(I)    5.1
Overall R-merge (linear)  0.170

Sadabs Results

Parameter refinement on 3017 reflections reduced R(int) from 0.1539 to 0.0764

Before rejection, 4913 reflections total and 956 unique

After rejection, 4221 reflections total and 945 unique

Runs

  Run 2-theta  R(int)  Incid. factors  Diffr. factors    K     Total I>2sig(I)
    1    3.7  0.0963   0.620 - 1.011   0.898 - 1.475   2.029    1064     685
    2   10.2  0.1032   0.597 - 1.187   0.863 - 1.353   2.038    1039     581
    3   10.2  0.0909   0.688 - 0.965   0.888 - 1.359   2.024     999     639
    4   10.2  0.0900   0.639 - 0.992   0.861 - 1.367   2.138     662     388
    5   10.2  0.1026   0.917 - 1.043   0.947 - 1.233   1.945     457     257
Ratio of minimum to maximum apparent transmission: 0.583801

Metadata

  Group    Mike Hursthouse  
  Operator   Susanne Huth  
  Sample Owner     
  Local Code   PAA/CN  
  Formula   C9 H8 N2 O1  
  Crystal Colour    Colourless  
  Crystal Habit    Lath  
  Crystal Size   0.38 x 0.02 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/