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#$Date: 2016-02-14 16:26:36 +0200 (Sun, 14 Feb 2016) $
#$Revision: 176435 $
#$URL: svn://www.crystallography.net/cod/cif/2/10/09/2100936.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_2100936
loop_
_publ_author_name
'Hagiya, K.'
'Ohmasa, M.'
'Iishi, K.'
_publ_section_title
;
 The modulated structure of synthetic Co-åkermanite, Ca₂CoSi₂O₇
;
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              172
_journal_page_last               179
_journal_paper_doi               10.1107/S0108768192008048
_journal_volume                  49
_journal_year                    1993
_chemical_formula_sum            'Ca2 Co O7 Si2'
_chemical_formula_weight         307.26
_symmetry_cell_setting           tetragonal
_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                   7.8417(6)
_cell_length_b                   7.8417(6)
_cell_length_c                   5.0249(3)
_cell_volume                     308.99(4)
_diffrn_radiation_type           Mo
_diffrn_radiation_wavelength     0.71073
_exptl_absorpt_coefficient_mu    4.77
_exptl_crystal_density_diffrn    3.302
_exptl_crystal_F_000             302
_cod_data_source_file            st0589.cif
_cod_data_source_block           st0589a
_cod_original_cell_volume        308.99
_cod_original_formula_sum        'Ca2 Co1 O7 Si2'
_cod_database_code               2100936
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Ca .33100(10) .169 .5059(2)
Co 0 0 0
Si .13900(10) .361 .9386(2)
O(1) 0 .5 .8229(10)
O(2) .1411(3) .3589 .2548(7)
O(3) .0800(4) .1894(3) .7854(5)
