#------------------------------------------------------------------------------ #$Date: 2008-01-13 22:15:36 +0000 (Sun, 13 Jan 2008) $ #$Revision: 14 $ #$URL: svn://www.crystallography.net/cod/cif/2/2003332.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_2003332 _journal_name_full 'Acta Crystallographica' _journal_year 1995 _journal_volume C51 _journal_page_first 549 _journal_page_last 551 _publ_section_title ; Neodymium Doped Sr~5~(PO~4~)~3~F and Sr~5~(VO~4~)~3~F ; _chemical_formula_sum 'F O12 Sr5 V3' _chemical_formula_weight 798.02 loop_ _symmetry_equiv_pos_as_xyz 'x,y,z' 'y,y-x,-z' 'x-y,x,-z' 'x,y,1/2-z' '-y,x-y,1/2-z' 'y-x,-x,1/2-z' '-x,-y,-z' '-y,-y+x,z' '-x+y,-x,z' '-x,-y,1/2+z' 'y,-x+y,1/2+z' '-y+x,x,1/2+z' _symmetry_space_group_name_H-M 'P 63/m' _cell_length_a 10.0077(6) _cell_length_b 10.0077(6) _cell_length_c 7.4342(8) _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 644.82 _cell_formula_units_Z 2 _exptl_crystal_density_diffrn 4.11 _exptl_crystal_density_meas ? _diffrn_radiation_type 'MoK\a' _diffrn_radiation_wavelength 0.71069 _cell_measurement_reflns_used 36 _cell_measurement_theta_min 18 _cell_measurement_theta_max 20 _exptl_absorpt_coefficient_mu 23.66 _cell_measurement_temperature 'room temperature' _exptl_crystal_description 'irregular' _exptl_crystal_size_max 0.15 _exptl_crystal_size_mid 0.11 _exptl_crystal_size_min 0.07 _exptl_crystal_size_rad ? _exptl_crystal_colour 'blue' _chemical_compound_source '?' _diffrn_measurement_device 'Stoe Stadi-4' _diffrn_measurement_method '\w-2\q' _exptl_absorpt_correction_type '\y scans of five reflections' _exptl_absorpt_correction_T_min 0.0825 _exptl_absorpt_correction_T_max 0.1860 _diffrn_reflns_number 3146 _reflns_number_total 831 _reflns_number_observed 421 _reflns_observed_criterion 'I>3\s(I)' _diffrn_reflns_av_R_equivalents 0.078 _diffrn_reflns_theta_max 32.5 _diffrn_reflns_limit_h_min -13 _diffrn_reflns_limit_h_max 13 _diffrn_reflns_limit_k_min -15 _diffrn_reflns_limit_k_max 15 _diffrn_reflns_limit_l_min -11 _diffrn_reflns_limit_l_max 11 _diffrn_standards_number 3 _diffrn_standards_interval_count ? _diffrn_standards_interval_time 60 _diffrn_standards_decay_% 1.5 _refine_ls_structure_factor_coef F _refine_ls_R_factor_obs 0.022 _refine_ls_wR_factor_obs 0.027 _refine_ls_goodness_of_fit_obs 0.87 _refine_ls_number_reflns 421 _refine_ls_number_parameters 51 _refine_ls_hydrogen_treatment ? _refine_ls_weighting_scheme ;Weighting scheme: Chebychev polynomial with parameters 16.3, 20.5, 7.19 ; _refine_ls_shift/esd_max 0.002 _refine_diff_density_max 0.620 _refine_diff_density_min -0.677 _refine_ls_extinction_method 'secondary (Larson, 1970)' _refine_ls_extinction_coef 99(4) _atom_type_scat_source 'IntTabIV' loop_ _atom_site_label _atom_site_occupancy _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Sr(1) 0.980(3) .33333 .66666 .0004(1) .0123(3) Nd(1) 0.014(3) .33333 .66666 .0004(1) .0123(3) Sr(2) 0.983(3) .23884(7) -.01060(8) .2500 .0114(3) Nd(2) 0.011(2) .23884(7) -.01060(8) .2500 .0114(3) O(1) 1.0 .3159(7) .4835(6) .2500 .014(3) O(2) 1.0 .5962(6) .4705(6) .2500 .016(3) O(3) 1.0 .3405(5) .2498(4) .0671(6) .018(2) V(1) 0.972(4) .3982(1) .3682(1) .2500 .0080(5) F(1) 0.98(2) .0000 .0000 .2500 .023(6)