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ºú±ó£¨Àí¹¤£©(ÔÂÖ»À¶´ú·¢): ½ð±Ò+10, ¸ÐлӦÖú 2014-10-14 20:36:51
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ºú±ó£¨Àí¹¤£©(ÔÂÖ»À¶´ú·¢): ½ð±Ò+10, ¸ÐлӦÖú 2014-10-14 20:36:51
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Toraya, H.; Yamazaki, S. Simulated annealing structure solution of a new phase of dicalcium silicate Ca~2~SiO~4~ and the mechanism of structural changes from ?-dicalcium silicate hydrate to ?~L~'-dicalcium silicate <i>via</i> the new phase Acta Crystallographica Section B, 2002, 58, 613-621 #------------------------------------------------------------------------------ #$Date: 2013-12-28 13:58:47 +0000 (Sat, 28 Dec 2013) $ #$Revision: 91933 $ #$URL: file:///home/coder/svn-repositories/cod/cif/2/10/33/2103316.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_2103316 loop_ _publ_author_name 'Toraya, H.' 'Yamazaki, S.' _publ_section_title ; Simulated annealing structure solution of a new phase of dicalcium silicate Ca~2~SiO~4~ and the mechanism of structural changes from \a-dicalcium silicate hydrate to \a~L~'-dicalcium silicate <i>via</i> the new phase ; _journal_issue 4 _journal_name_full 'Acta Crystallographica Section B' _journal_page_first 613 _journal_page_last 621 _journal_volume 58 _journal_year 2002 _chemical_formula_moiety 'Ca2 Si O4' _chemical_formula_structural 'Ca2 Si O4' _chemical_formula_sum 'Ca2 O4 Si' _chemical_formula_weight 172.24 _chemical_name_common 'dicalcium silicate' _chemical_name_systematic ; dicalcium silicate ; _space_group_IT_number 14 _symmetry_cell_setting monoclinic _symmetry_space_group_name_Hall '-P 2ybc' _symmetry_space_group_name_H-M 'P 1 21/c 1' _cell_angle_alpha 90.0 _cell_angle_beta 94.848(5) _cell_angle_gamma 90.0 _cell_formula_units_Z 8 _cell_length_a 8.2127(5) _cell_length_b 9.7930(4) _cell_length_c 9.7954(5) _cell_measurement_temperature 298 _cell_volume 785.00(7) _computing_cell_refinement WPPF(ver.3.00) _computing_data_reduction DATAPRO(ver.2.00) _computing_molecular_graphics Ball&Stick _computing_structure_refinement PFLS(ver.5.00) _computing_structure_solution DSS(ver.1.00) _diffrn_ambient_temperature 298 _diffrn_measurement_device_type 'MDS, 2-axis, multiple-detector system' _diffrn_radiation_monochromator 'double-crystal Si(111)' _diffrn_radiation_type synchrotron _diffrn_radiation_wavelength 1.598 _exptl_crystal_density_diffrn 2.91 _exptl_crystal_density_method 'not measured' _exptl_crystal_F_000 688 _refine_ls_extinction_method none _refine_ls_goodness_of_fit_all 2.28 _refine_ls_weighting_scheme 1/(Y~i~) _[local]_cod_data_source_file ck0012.cif _[local]_cod_data_source_block CK0012 _[local]_cod_chemical_formula_sum_orig 'Ca2 Si O4' _cod_database_code 2103316 loop_ _symmetry_equiv_pos_site_id _symmetry_equiv_pos_as_xyz 1 x,y,z 2 -x,-y,-z 3 -x,1/2+y,1/2-z 4 x,1/2-y,1/2+z loop_ _atom_type_symbol _atom_type_description _atom_type_scat_dispersion_real _atom_type_scat_dispersion_imag _atom_type_scat_source Ca Ca .341 1.286 'International Tables for Crystallography (Vol. IV)' Si Si .244 .330 'International Tables for Crystallography (Vol. IV)' O O .047 .032 'International Tables for Crystallography (Vol. IV)' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv _atom_site_occupancy Ca1 0.8258(3) 0.4210(2) 0.0729(2) 0.0160 1 Ca2 0.6621(3) 0.4181(2) 0.4121(2) 0.0160 1 Ca3 0.3760(3) 0.2889(2) 0.0816(2) 0.0160 1 Ca4 0.9081(3) 0.0681(2) 0.2068(2) 0.0160 1 Si1 0.0221(4) 0.2959(3) 0.4326(3) 0.0137 1 Si2 0.4618(4) 0.5757(3) 0.2026(3) 0.0137 1 O1 0.8768(7) 0.2993(6) 0.5287(7) 0.0175 1 O2 0.9625(8) 0.3647(5) 0.2856(7) 0.0175 1 O3 0.0641(8) 0.1350(5) 0.4077(7) 0.0175 1 O4 0.1831(7) 0.3873(5) 0.5038(6) 0.0175 1 O5 0.5894(9) 0.4557(5) 0.1682(6) 0.0175 1 O6 0.2903(9) 0.5091(5) 0.1502(6) 0.0175 1 O7 0.4982(7) 0.7130(5) 0.1283(7) 0.0175 1 O8 0.4557(7) 0.5955(5) 0.3702(7) 0.0175 1 _journal_paper_doi 10.1107/S0108768102005189 |

2Â¥2014-10-11 16:59:48
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