[sdpd] UPPW-5 solution - UPPW-6 problem

[Armel Le Bail <alb...@cristal.org>]

Hi,

Some divergences about the most probable cells for
UPPW-5 : http://www.cristal.org/uppw/uppw5.html
A new competitor : EFLECH/INDEX needing the raw pattern
(so it could not participate to the previous UPPWs)

Conclusions for UPPW-5 will obviously not be available before
the structure solution of delta-ZnP2O7. One can just say that
"maybe the correct cell is in the indexing proposal list". SDPD
experts are facing that situation every time... But that case
is particularly difficult due to bad crystallinity. Have the most
recent indexing software outmatched the old established ones ?
Perhaps, hard to say !

New problem UPPW-6 at :
http://www.cristal.org/uppw/uppw6.html

ICDD 53-1910
C8H13MgNO6 - magnesium adipate glycinate
Wavelength : 1.5418
Reference : W. Marcoin, H. Duda, H. Rej,
J. Appl. Cryst. 16 (1995) 41.
Comments : recrystallized from methanol

Not found in the Cambridge Structural Database CSD

2-theta  Intensity
11.580  11
13.810  23
15.270 100
19.900  17
21.200  40
21.680   4
22.160   4
23.320   7
25.410  10
26.910  15
27.840   4
28.280   6
28.800   5
30.850  54
32.300   3
33.290   6
35.950   6
38.310   6
39.130   5
40.900   8
41.830   9
44.450   8
45.550  10
47.060   4

Best wishes,

Armel 


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