You are missing the symmetry records. Jmol does not process raw space group
names because of all the possible settings.

REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000
0.00000
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000
0.00000
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000
0.00000
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000
0.00000
REMARK 290   SMTRY2   2  0.000000  1.000000  0.000000
9.32500
REMARK 290   SMTRY3   2  0.000000  0.000000 -1.000000        0.00000



On Thu, Nov 27, 2014 at 10:46 AM, Hans Horn <[email protected]> wrote:

>  Folks,
>
> I have the following pdb file for an MgCl2 crystal:
>
> HEADER                                           09-NOV-11
> TITLE     Structure 1
> REVDAT   1   09-NOV-11         0
> REMARK   4
> REMARK   4      COMPLIES WITH FORMAT V. 2.1, 25-OCT-1996
> HET    UNK  A   1       2
> FORMUL   1  UNK    Mg3 Cl6
> CRYST1   3.596    3.596    17.590  90.00  90.00 120.00 R -3 m      -1
> ORIGX1      1.000000  0.000000  0.000000        0.00000
> ORIGX2      0.000000  1.000000  0.000000        0.00000
> ORIGX3      0.000000  0.000000  1.000000        0.00000
> SCALE1      0.278087  0.160553 -0.000000        0.00000
> SCALE2      0.000000  0.321107 -0.000000        0.00000
> SCALE3      0.000000  0.000000  0.056850        0.00000
> HETATM    1 Mg1  UNK     1       0.000   0.000   0.000  1.00
> 0.00          Mg2+
> HETATM    2 Cl1  UNK     2       0.000   0.000   4.535  1.00
> 0.00          Cl1-
> END
>
> which claim to have space group 'R -3 m'.
>
> When I load it into jmol,
> e.g. via  load <pdb name> {1 1 1} packed
>
> jmol insists that we have 'P 1 [P 1] #1' instead of 'R -3 m' symmetry.
>
> Somehow the CRYST1 record seems to be parsed incorrectly.
> For all I can tell the pdb file is formatted correctly.
>
> Thx.,
> Hans
>
>
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-- 
Robert M. Hanson
Larson-Anderson Professor of Chemistry
Chair, Department of Chemistry
St. Olaf College
Northfield, MN
http://www.stolaf.edu/people/hansonr


If nature does not answer first what we want,
it is better to take what answer we get.

-- Josiah Willard Gibbs, Lecture XXX, Monday, February 5, 1900
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