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#$Date: 2016-02-13 20:28:24 +0100 (Sat 13 de Feb de 2016) $
#$Revision: 176429 $
#$URL: svn://www.crystallography.net/cod/cif/1/53/16/1531641.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_1531641
loop_
_publ_author_name
'Kuz'micheva, G.M.'
'Rybakov, V.B.'
'Kutovoi, S.A.'
'Panyutin, V.L.'
'Oleinik, A.Yu.'
'Plashkarev, O.G.'
_publ_section_title
;
 Preparation, structure and properties of new laser crystals Y2 Si Be2 O7
 and Y2 Al (Be B) O7
;
_journal_name_full               'Neorganicheskie Materialy'
_journal_page_first              72
_journal_page_last               77
_journal_volume                  38
_journal_year                    2002
_chemical_formula_sum            'Al B Be O7 Y2'
_chemical_name_systematic        'Y2 Be ((Al B) O7)'
_space_group_IT_number           113
_symmetry_space_group_name_Hall  'P -4 2ab'
_symmetry_space_group_name_H-M   'P -4 21 m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   7.267
_cell_length_b                   7.267
_cell_length_c                   4.708
_cell_volume                     248.626
_citation_journal_id_ASTM        NMATEI
_cod_data_source_file            Kuzmicheva_NMATEI_2002_801.cif
_cod_data_source_block           Al1B1Be1O7Y2
_cod_original_cell_volume        248.6262
_cod_original_formula_sum        'Al1 B1 Be1 O7 Y2'
_cod_database_code               1531641
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
y,-x,-z
-x,-y,z
-y,x,-z
x+1/2,-y+1/2,-z
-y+1/2,-x+1/2,z
-x+1/2,y+1/2,-z
y+1/2,x+1/2,z
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
O2 O-2 0.6399 0.1399 0.2633 1 0.0
Al1 Al+3 0 0 0 1 0.0
O3 O-2 0 0.5 0.181 1 0.0
Be1 Be+2 0.6373 0.1373 0.9419 0.5 0.0
Y1 Y+3 0.8367 0.3367 0.5071 1 0.0
O1 O-2 0.9203 0.8221 0.2145 1 0.0
B1 B+3 0.6373 0.1373 0.9419 0.5 0.0
