A2B6O9F2 (A = NH4, K): New members of A2B6O9F2 family with deep-UV cutoff edge and moderate birefringence
Chen, Zilong; Li, Zijian; Chu, Dongdong; Zhang, Fangfang; Li, Xiaojing; Yang, Zhihua; Long, Xifa; Pan, Shilie; Chemical Communications  (2022) –; doi:10.1039/D2CC04193F

data_7130839
_publ_section_title
;
 A2B6O9F2 (A = NH4, K): New members of A2B6O9F2 family with deep-UV cutoff
 edge and moderate birefringence
;
_journal_name_full               'Chemical Communications'
_journal_paper_doi               10.1039/D2CC04193F
_journal_year                    2022
_chemical_formula_moiety         'B6 F2 K2 O9'
_chemical_formula_sum            'B6 F2 K2 O9'
_chemical_formula_weight         325.06
_space_group_crystal_system      orthorhombic
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_atom_sites_solution_primary     iterative
_atom_sites_solution_secondary   difmap
_audit_creation_date             2022-02-11
_audit_creation_method
;
Olex2 1.3
(compiled 2020.06.28 svn.raecde09e for OlexSys, GUI svn.r6132)
;
_audit_update_record
;
2022-07-17 deposited with the CCDC.	2022-10-10 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   11.7129(10)
_cell_length_b                   10.3030(7)
_cell_length_c                   15.4140(11)
_cell_measurement_reflns_used    1900
_cell_measurement_temperature    300.0
_cell_measurement_theta_max      26.69
_cell_measurement_theta_min      3.48
_cell_volume                     1860.1(2)
_computing_cell_refinement       'SAINT V8.38A (Bruker, 2018)'
_computing_data_reduction        'SAINT V8.38A (Bruker, 2018)'
_computing_molecular_graphics    'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL  (Sheldrick, 2008)'
_computing_structure_solution    'olex2.solve 1.3 (Bourhis et al., 2015)'
_diffrn_ambient_temperature      300.0
_diffrn_detector                 'CCD area detector'
_diffrn_detector_area_resol_mean 5.6
_diffrn_detector_type            'Bruker SMART CCD 6000 area detector'
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0780
_diffrn_reflns_av_unetI/netI     0.0473
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            15107
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         2.64
_diffrn_source                   'sealed X-ray tube'
_diffrn_source_current           1.4
_diffrn_source_power             0.07
_diffrn_source_target            Mo
_diffrn_source_voltage           50.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.090
_exptl_absorpt_correction_T_max  0.7278
_exptl_absorpt_correction_T_min  0.6857
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.0809 before and 0.0698 after correction.
The Ratio of minimum to maximum transmission is 0.9422.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    2.321
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1264
_exptl_crystal_size_max          0.142
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.085
_refine_diff_density_max         0.293
_refine_diff_density_min         -0.414
_refine_diff_density_rms         0.085
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.076
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     172
_refine_ls_number_reflns         2134
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.076
_refine_ls_R_factor_all          0.0558
_refine_ls_R_factor_gt           0.0371
_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^)+(0.0200P)^2^+2.3377P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0760
_refine_ls_wR_factor_ref         0.0891
_reflns_number_gt                1575
_reflns_number_total             2134
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            d2cc04193f2.cif
_cod_data_source_block           11
_cod_database_code               7130839
_olex2_refinement_description
;
;
_olex2_submission_special_instructions 'No special instructions were received'