#------------------------------------------------------------------------------
#$Date: 2016-02-18 16:37:37 +0100 (Thu 18 de Feb de 2016) $
#$Revision: 176729 $
#$URL: svn://www.crystallography.net/cod/cif/1/00/70/1007099.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_1007099
loop_
_publ_author_name
'Averbuch-Pouchot, M T'
'Durif, A'
_publ_section_title
;
Structure d'un Tetrametaphosphate de Sodium-Strontium: Sr Na₂ P₄
O₁₂
;
_journal_coden_ASTM              ACSCEE
_journal_name_full               'Acta Crystallographica C (39,1983-)'
_journal_page_first              811
_journal_page_last               812
_journal_volume                  39
_journal_year                    1983
_chemical_formula_structural     'Sr NA2 P4 O12'
_chemical_formula_sum            'Na2 O12 P4 Sr'
_chemical_name_systematic        'Strontium disodium cyclo-tetraphosphate'
_space_group_IT_number           125
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  '-P 4a 2b'
_symmetry_space_group_name_H-M   'P 4/n b m :2'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   9.838(5)
_cell_length_b                   9.838(5)
_cell_length_c                   5.003(3)
_cell_volume                     484.2
_refine_ls_R_factor_all          0.02
_cod_original_sg_symbol_H-M      'P 4/n b m Z'
_cod_database_code               1007099
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-x,1/2+y,z
1/2+x,-y,z
1/2-x,1/2-y,z
-x,-y,-z
x,1/2-y,-z
1/2-x,y,-z
1/2+x,1/2+y,-z
y,x,-z
1/2+y,-x,-z
-y,1/2+x,-z
1/2-y,1/2-x,-z
-y,-x,z
1/2-y,x,z
y,1/2-x,z
1/2+y,1/2+x,z
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_symmetry_multiplicity
_atom_site_Wyckoff_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_attached_hydrogens
_atom_site_calc_flag
Sr1 Sr2+ 2 b 0.25 0.25 0.5 1. 0 d
P1 P5+ 8 k 0.53755(6) 0.25 0. 1. 0 d
Na1 Na1+ 4 f 0. 0. 0.5 1. 0 d
O1 O2- 8 m -0.3602 0.3602 0.1301(4) 1. 0 d
O2 O2- 16 n 0.1892(2) 0.0366(2) 0.2279(3) 1. 0 d
loop_
_atom_type_symbol
_atom_type_oxidation_number
Sr2+ 2.000
P5+ 5.000
Na1+ 1.000
O2- -2.000
