#------------------------------------------------------------------------------
#$Date: 2016-02-14 15:26:36 +0100 (dom 14 de feb de 2016) $
#$Revision: 176435 $
#$URL: svn://www.crystallography.net/cod/cif/2/10/37/2103770.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/. The original data for this entry
# were provided by IUCr Journals, http://journals.iucr.org/.
#
# The file may be used within the scientific community so long as
# proper attribution is given to the journal article from which the
# data were obtained.
#
data_2103770
loop_
_publ_author_name
'Friedrich, Alexandra'
'Kunz, Martin'
'Suard, Emmanuelle'
_publ_section_title
;
 Temperature-dependent neutron powder diffraction study of the
 Ba(OD)₂ polymorphs: a new low-temperature phase
;
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              747
_journal_page_last               758
_journal_paper_doi               10.1107/S0108768101013647
_journal_volume                  57
_journal_year                    2001
_chemical_formula_iupac          'Ba (O D)2'
_chemical_formula_moiety         'Ba, 2(O D)'
_chemical_formula_structural     'Ba (O D)2'
_chemical_formula_sum            'Ba D2 O2'
_chemical_formula_weight         1386.928
_chemical_name_systematic
;
deuterated barium hydroxide
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_cell_angle_alpha                90.0
_cell_angle_beta                 95.6888(9)
_cell_angle_gamma                90.0
_cell_formula_units_Z            8
_cell_length_a                   9.37718(16)
_cell_length_b                   7.88503(13)
_cell_length_c                   6.76289(10)
_cell_measurement_temperature    200
_cell_volume                     497.581(14)
_computing_cell_refinement       'GSAS (Larson and Von Dreele, 1994)'
_computing_data_reduction        GSAS
_computing_molecular_graphics
'Crystal Maker, version 4.0.1 (Palmer, D.C., 1994-99)'
_computing_publication_material  GSAS
_computing_structure_refinement  GSAS
_diffrn_measurement_device_type  'diffractometer D 2B, ILL'
_diffrn_radiation_probe          neutron
_diffrn_radiation_source         'high-flux isotope reactor'
_diffrn_radiation_type           neutron
_diffrn_radiation_wavelength     1.59432
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   1.30
_refine_ls_number_parameters     66
_refine_ls_structure_factor_coef rietveld
_reflns_number_gt                1017
_cod_data_source_file            os0074.cif
_cod_data_source_block           b200
_cod_original_cell_volume        497.580(10)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_original_formula_sum        'D2 O2 Ba1'
_cod_database_code               2103770
loop_
_symmetry_equiv_pos_as_xyz
+x,+y,+z
-x+1/2,+y+1/2,-z+1/2
-x,-y,-z
+x+1/2,-y+1/2,+z+1/2
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_thermal_displace_type
_atom_site_occupancy
Ba1 .6029(2) .6406(3) .2503(3) .00657 Uiso 1.0
Ba2 .1816(2) .5482(3) .2158(4) .00712 Uiso 1.0
O1 .8823(2) .4878(3) .1763(3) .00948 Uiso 1.0
O2 .4119(2) .3604(3) .1452(3) .00929 Uiso 1.0
O3 .6067(2) .3462(3) .4942(3) .00972 Uiso 1.0
O4 .1649(2) .2964(3) .4651(3) .01181 Uiso 1.0
D1 .8846(2) .5308(3) .3104(4) .02725 Uiso 1.0
D2 .4708(2) .3494(3) .2721(3) .02113 Uiso 1.0
D3 .6246(2) .2362(3) .4423(3) .02596 Uiso 1.0
D4 .1022(2) .2431(3) .5514(4) .02748 Uiso 1.0
loop_
_atom_type_symbol
_atom_type_description
_atom_type_scat_source
Ba Ba 'Koster & Yelon (1982), Neutron Diffraction Newsletter'
O O 'Koster & Yelon (1982), Neutron Diffraction Newsletter'
D D 'Koster & Yelon (1982), Neutron Diffraction Newsletter'
