#------------------------------------------------------------------------------
#$Date: 2018-09-27 06:13:35 +0200 (jue 27 de sep de 2018) $
#$Revision: 211196 $
#$URL: svn://www.crystallography.net/cod/cif/7/22/27/7222775.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_7222775
loop_
_publ_author_name
'Reckeweg, O.'
'Lind, C.'
'Simon, A.'
'DiSalvo, F.J.'
_publ_section_title
;
 Rietveld refinement of the crystal structure of alpha-(Be3 N2) and the
 experimental determination of optical band gaps for Mg3 N2, Ca3 N2 and Ca
 Mg2 N2
;
_journal_name_full
;
Zeitschrift fuer Naturforschung, Teil B. Anorganische Chemie, Organische 
Chemie (42,1987-)
;
_journal_page_first              159
_journal_page_last               162
_journal_volume                  58
_journal_year                    2003
_chemical_formula_sum            'Be3 N2'
_space_group_IT_number           206
_symmetry_space_group_name_Hall  '-I 2b 2c 3'
_symmetry_space_group_name_H-M   'I a -3'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            16
_cell_length_a                   8.14518
_cell_length_b                   8.14518
_cell_length_c                   8.14518
_cell_volume                     540.383
_citation_journal_id_ASTM        ZNBSEN
_cod_data_source_file            Reckeweg_ZNBSEN_2003_750.cif
_cod_data_source_block           Be3N2
_cod_original_cell_volume        540.3834
_cod_database_code               7222775
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-x,-y+1/2,z
x,-y,-z+1/2
-x,y+1/2,-z+1/2
z,x,y
-z,-x+1/2,y
z,-x,-y+1/2
-z,x+1/2,-y+1/2
y,z,x
y,-z,-x+1/2
-y,z+1/2,-x+1/2
-y+1/2,-z,x+1/2
-x,-y,-z
x,y-1/2,-z
-x,y,z-1/2
x,-y-1/2,z-1/2
-z,-x,-y
z,x-1/2,-y
-z,x,y-1/2
z,-x-1/2,y-1/2
-y,-z,-x
-y,z,x-1/2
y,-z-1/2,x-1/2
y-1/2,z,-x-1/2
x+1/2,y+1/2,z+1/2
-x+1/2,-y+1,z+1/2
x+1/2,-y+1/2,-z+1
-x+1/2,y+1,-z+1
z+1/2,x+1/2,y+1/2
-z+1/2,-x+1,y+1/2
z+1/2,-x+1/2,-y+1
-z+1/2,x+1,-y+1
y+1/2,z+1/2,x+1/2
y+1/2,-z+1/2,-x+1
-y+1/2,z+1,-x+1
-y+1,-z+1/2,x+1
-x+1/2,-y+1/2,-z+1/2
x+1/2,y,-z+1/2
-x+1/2,y+1/2,z
x+1/2,-y,z
-z+1/2,-x+1/2,-y+1/2
z+1/2,x,-y+1/2
-z+1/2,x+1/2,y
z+1/2,-x,y
-y+1/2,-z+1/2,-x+1/2
-y+1/2,z+1/2,x
y+1/2,-z,x
y,z+1/2,-x
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
N1 N-3 0.9785 0 0.25 1 0.0
N2 N-3 0.25 0.25 0.25 1 0.0
Be1 Be+2 0.3865 0.1465 0.3758 1 0.0
