#------------------------------------------------------------------------------
#$Date: 2015-09-18 01:26:36 +0200 (vie 18 de sep de 2015) $
#$Revision: 157346 $
#$URL: svn://www.crystallography.net/cod/cif/1/53/17/1531786.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_1531786
loop_
_publ_author_name
'Monteverde, F.'
'Celotti, G.'
_publ_section_title
;
 Structural data from X-ray powder diffraction for new high-temperature
 phases (Y1-x Lnx)2 Si2 O7 with Ln = Ce, Pr, Nd
;
_journal_name_full               'Journal of the European Ceramic Society'
_journal_page_first              721
_journal_page_last               730
_journal_volume                  22
_journal_year                    2002
_chemical_formula_sum            'Ce0.667 O7 Si2 Y1.333'
_chemical_name_systematic        '(Y0.333 Ce0.667) Y (Si2 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                 111.45
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.365
_cell_length_b                   8.509
_cell_length_c                   13.804
_cell_volume                     586.516
_citation_journal_id_ASTM        JECSER
_cod_data_source_file            Monteverde_JECSER_2002_607.cif
_cod_data_source_block           Ce0.667O7Si2Y1.333
_cod_original_cell_volume        586.5164
_cod_database_code               1531786
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
O3 O-2 0.574 0.168 0.078 1 0.0
Si2 Si+4 0.91 0.51 0.171 1 0.0
O1 O-2 0.806 0.421 0.059 1 0.0
Si1 Si+4 0.73 0.253 0.014 1 0.0
Y1 Y+3 0.5172 0.8055 0.7689 0.335 0.0
O5 O-2 0.798 0.493 0.253 1 0.0
Y2 Y+3 0.8295 0.6008 0.589 1 0.0
O4 O-2 0.56 0.268 0.91 1 0.0
O6 O-2 0.231 0.451 0.221 1 0.0
Ce1 Ce+3 0.5172 0.8055 0.7689 0.665 0.0
O7 O-2 0.034 0.655 0.15 1 0.0
O2 O-2 0.999 0.164 0.045 1 0.0
