Crystal chemistry of hydrothermally grown ternary alkali rare earth fluorides
McMillen, Colin D.; Comer, Sara; Fulle, Kyle; Sanjeewa, Liurukara D.; Kolis, Joseph W.; Acta Crystallographica Section B 71 (2015) 768–776; doi:10.1107/S2052520615017916

data_2107294
_publ_section_title
;
 Crystal chemistry of hydrothermally grown ternary alkali rare earth
 fluorides
;
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              768
_journal_page_last               776
_journal_paper_doi               10.1107/S2052520615017916
_journal_volume                  71
_journal_year                    2015
_chemical_formula_sum            'F7 Rb Sm2'
_chemical_formula_weight         519.17
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           52
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2a 2bc'
_symmetry_space_group_name_H-M   'P n n a'
_atom_sites_solution_hydrogens   none
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   13.9359(16)
_cell_length_b                   12.2412(13)
_cell_length_c                   7.9329(8)
_cell_measurement_reflns_used    4163
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      28.2711
_cell_measurement_theta_min      2.9234
_cell_volume                     1353.3(3)
_computing_cell_refinement       'CrystalClear (Rigaku/MSC, 2006)'
_computing_data_collection       'CrystalClear (Rigaku/MSC, 2006)'
_computing_data_reduction        'CrystalClear (Rigaku/MSC, 2006)'
_computing_molecular_graphics    'DIAMOND (Bradenburg, 1999)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 14.6199
_diffrn_measured_fraction_theta_full 0.976
_diffrn_measured_fraction_theta_max 0.976
_diffrn_measurement_device_type  'Rigaku AFC8S'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0387
_diffrn_reflns_av_sigmaI/netI    0.0246
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            6252
_diffrn_reflns_theta_full        25.14
_diffrn_reflns_theta_max         25.14
_diffrn_reflns_theta_min         2.92
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    24.391
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.6012
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'REQAB, CrystalClear'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    5.096
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1792
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.12
_refine_diff_density_max         1.903
_refine_diff_density_min         -2.914
_refine_ls_extinction_coef       0.00061(10)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.115
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     116
_refine_ls_number_reflns         1188
_refine_ls_number_restraints     12
_refine_ls_restrained_S_all      1.109
_refine_ls_R_factor_all          0.0499
_refine_ls_R_factor_gt           0.0426
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0422P)^2^+55.8111P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0983
_refine_ls_wR_factor_ref         0.1025
_reflns_number_gt                1035
_reflns_number_total             1188
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            bp5082sup1.cif
_cod_data_source_block           RbSm2F7
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/IUCr/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 4268 2015-11-12 08:31:59Z antanas 
;
_cod_original_sg_symbol_H-M      Pnna
_cod_database_code               2107294
_cod_database_fobs_code          2107294