EPSRC National Crystallography Service

Data Collection Summary

Summary report for Directory: diska/01src090

Report generated Jan 31, 2001; 17:12:21

Unit cell

10855 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) 7.7318 +/- 0.0005
b (Angstrom) 27.917 +/- 0.002
c (Angstrom) 16.4298 +/- 0.0014
alpha (°) 90.000
beta (°) 102.479 +/- 0.003
gamma (°) 90.000
Volume (A**3) 3462.6 +/- 0.4
Mosaicity (°) 0.818 +/- 0.005

Data collection

Summary

Total number of images collected 111
Total exposure time 71.7 minutes
Data collection exposure time 69.0 minutes
Data collection wall-clock time 82.5 minutes

Experimental Conditions

Wavelength 0.71073 A
Generator setting 50.00kV 90.00mA
Crystal to detector distance 30.00 mm

Scans

Type Name # images Total
Rotation
Per frame
Rotation
Exposure
per frame
Used in
scaling
data collection s01f 90 180.0° phi 2.000° 40 seconds Yes
data collection s02f 13  26.0° omega 2.000° 40 seconds Yes

Scaling

Deleted observations

Zero sigma or profile test    2
Overload or incomplete profile  442
Sigma cutoff   35
High resolution limit   10

Final Data Set

Scale factor 10.00
Number of 'full' reflections   1789
Number of 'partial' reflections  21230
Total number of integrated reflections  12365
Total number of unique reflections   3967
Data completeness   97.3%
Resolution range 7.00-0.77 A
Theta range 2.91°-27.48°
Average Intensity    13.9
Average Sigma(I)     2.0
Overall R-merge (linear)   0.173

Crystal Information

Collection Temperature   150 K
Crystal Size  0.5 x 0.08 x 0.02
Crystal Colour  colourless
Crystal Shape  platy needle

SORTAV Absorption correction Summary

R(merge) on F2
Before
After
R
0.142 
0.129 
Rw
0.315 
0.306 
Max Transmission Factor
0.998E+00 
Min Transmission Factor
0.667E+00 

N.B. The scaling summary is redundant as outliers are treated during the absorption correction using SORTAV. The quoted data completeness is for the stated resolution ranges, and the Overall R-merge is that before the absorption correction. The SORTAV transmission factors are based on a crude approximation and the expected formula (not always correct!). For more information visit the service web site at: http://www.soton.ac.uk/~xservice/