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#$Date: 2016-02-18 17:37:37 +0200 (Thu, 18 Feb 2016) $
#$Revision: 176729 $
#$URL: svn://www.crystallography.net/cod/cif/1/51/07/1510770.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_1510770
loop_
_publ_author_name
'Zhang Yue'
'Li Yadong'
_publ_section_title
;
 Red photoluminescence properties and crystal structure of sodium rare
 earth oxyborate
;
_journal_name_full               'Journal of Alloys Compd.'
_journal_page_first              99
_journal_page_last               103
_journal_paper_doi               10.1016/j.jallcom.2003.09.035
_journal_volume                  370
_journal_year                    2004
_chemical_formula_sum            'B2 Na2 O7 Y2'
_chemical_name_systematic        'Na2 Y2 (B2 O7)'
_space_group_IT_number           14
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_cell_angle_alpha                90
_cell_angle_beta                 117.756
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.5993
_cell_length_b                   6.2311
_cell_length_c                   10.2247
_cell_volume                     597.593
_citation_journal_id_ASTM        JALCEU
_cod_data_source_file            boron_267.cif
_cod_data_source_block           B2Na2O7Y2
_cod_original_cell_volume        597.5934
_cod_database_code               1510770
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-x,y+1/2,-z+1/2
-x,-y,-z
x,-y-1/2,z-1/2
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
Na1 Na+1 0.5255 -0.0604 0.2653 1 0.0
O4 O-2 0.148 0.4492 0.0868 1 0.0
B1 B+3 0.3279 0.2529 -0.0743 1 0.0
O1 O-2 0.9749 0.1249 0.105 1 0.0
Na2 Na+1 0.609 0.251 0.0433 1 0.0
O6 O-2 0.8512 0.2594 0.2795 1 0.0
Y1 Y+3 0.1832 0.0821 0.0874 1 0.0
O2 O-2 0.3134 0.7516 0.1327 1 0.0
O5 O-2 0.3968 0.1542 0.0551 1 0.0
Y2 Y+3 0.9835 0.4601 0.1814 1 0.0
O7 O-2 0.3645 0.1561 0.3338 1 0.0
B2 B+3 0.2169 0.6289 0.1599 1 0.0
O3 O-2 0.1693 0.2558 0.3665 1 0.0
