#------------------------------------------------------------------------------
#$Date: 2014-07-11 17:35:18 +0300 (Fri, 11 Jul 2014) $
#$Revision: 120071 $
#$URL: file:///home/coder/svn-repositories/cod/cif/1/51/15/1511501.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_1511501
loop_
_publ_author_name
'Krogh-Moe, J.'
_publ_section_title
;
 The Crystal Structure of Strontium Diborate, Sr O (B2 O3)2
;
_journal_name_full
'Acta Chemica Scandinavica (1-27,1973-42,1988)'
_journal_page_first              2055
_journal_page_last               2060
_journal_volume                  18
_journal_year                    1964
_chemical_formula_sum            'B4 O7 Sr'
_chemical_name_systematic        'Sr O (B2 O3)2'
_space_group_IT_number           31
_symmetry_space_group_name_Hall  'P 2ac -2'
_symmetry_space_group_name_H-M   'P m n 21'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   10.711
_cell_length_b                   4.427
_cell_length_c                   4.235
_cell_volume                     200.814
_citation_journal_id_ASTM        ACSAA4
_[local]_cod_data_source_file    boron4-x_130.cif
_[local]_cod_data_source_block   B4O7Sr1
_[local]_cod_chemical_formula_sum_orig 'B4 O7 Sr1'
_cod_original_cell_volume        200.8135
_cod_database_code               1511501
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-x+1/2,-y,z+1/2
-x,y,z
x+1/2,-y,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
Sr1 Sr+2 0 0.289 0 1 0.0
O1 O-2 0 0.728 0.454 1 0.0
O4 O-2 0.365 0.226 0.335 1 0.0
B1 B+3 0.379 0.174 0.976 1 0.0
O2 O-2 0.359 0.857 0.064 1 0.0
O3 O-2 0.221 0.631 0.335 1 0.0
B2 B+3 0.246 0.671 0.963 1 0.0
_journal_paper_doi 10.3891/acta.chem.scand.18-2055