Just move that atom type block up in front of the atom coordinates. I 
know, probably shouldn't have to worry about this.....

Bob

Phillip Barak wrote:

>From: Bob Hanson <[EMAIL PROTECTED]>
>  
>
>>Quick fix:
>>
>>change your designation
>>
>>_atom_site_label
>>
>>to
>>
>>_atom_site_type_symbol
>>    
>>
>
>I see how the fields didn't match before. At your suggestion, I modified
>as (below). With 'spacefill IONIC', the ionic radius for calcium seems
>right but carbon and oxygen are still wrong (oxygen should be bigger
>than calcium)...and as before. Ideas, or pointer to correctly rendering
>cif file?
>
>data_global
>_cell_length_a 4.988
>_cell_length_b 4.988
>_cell_length_c 17.061
>_cell_angle_alpha 90
>_cell_angle_beta 90
>_cell_angle_gamma 120
>_cell_volume 367.611
>_symmetry_space_group_name_H-M 'R -3 c'
>loop_
>_atom_site_type_symbol
>_atom_site_fract_x
>_atom_site_fract_y
>_atom_site_fract_z
>Ca   0.00000   0.00000   0.00000
>C   0.00000   0.00000   0.25000
>O   0.25670   0.00000   0.25000
>loop_
>_atom_type_symbol
>_atom_type_oxidation_number
>Ca 2
>C  4
>O -2
>
>  
>
>>I'm using the 10.9.69 pre-release and am getting anomalous results 
>>with"spacefill ionic".
>>
>>With an (abbreviated-for-clarity) file like this for calcite:
>>
>>data_global
>>_cell_length_a 4.988
>>_cell_length_b 4.988
>>_cell_length_c 17.061
>>_cell_angle_alpha 90
>>_cell_angle_beta 90
>>_cell_angle_gamma 120
>>_cell_volume 367.611
>>_symmetry_space_group_name_H-M 'R -3 c'
>>loop_
>>_atom_site_label
>>_atom_site_fract_x
>>_atom_site_fract_y
>>_atom_site_fract_z
>>Ca   0.00000   0.00000   0.00000
>>C   0.00000   0.00000   0.25000
>>O   0.25670   0.00000   0.25000
>>loop_
>>_atom_type_symbol
>>_atom_type_oxidation_number
>>Ca 2
>>C  4
>>O -2
>>
>>>From the Jmol code, ionic radii should be:
>>C+4: 160
>>O-2: 1320
>>Ca+2: 990
>>but with 'spacefill ionic' command, oxygen is smaller than calcium. 
>>Ideas?
>>--Phillip Barak
>>
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