Coexisting Ferroelectric and Ferroelastic Orders in Rare 3D Homochiral Hybrid Bimetal Halides
He, Lei; Shi, Ping-Ping; Zhou, Lin; Liu, Zhi-Bo; Zhang, Wen; Ye, Qiong; Chemistry of Materials  (2021) –; doi:10.1021/acs.chemmater.1c02084

data_4004016
_publ_section_title
;
 Coexisting Ferroelectric and Ferroelastic Orders in Rare 3D Homochiral
 Hybrid Bimetal Halides
;
_journal_name_full               'Chemistry of Materials'
_journal_paper_doi               10.1021/acs.chemmater.1c02084
_journal_year                    2021
_chemical_formula_moiety         'Bi Br6 H O Rb, 2(C4 H9 N),H O'
_chemical_formula_sum            'C8 H20 Bi Br6 N2 O2 Rb'
_chemical_formula_weight         950.11
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 113.403(18)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   8.8725(14)
_cell_length_b                   14.4071(17)
_cell_length_c                   9.6558(14)
_cell_measurement_reflns_used    1780
_cell_measurement_temperature    423(2)
_cell_measurement_theta_max      24.990
_cell_measurement_theta_min      2.50
_cell_volume                     1132.7(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      423(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'XtaLAB Synergy R, DW system, HyPix'
_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  0.1460
_diffrn_reflns_av_sigmaI/netI    0.2370
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            9415
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         2.50
_exptl_absorpt_coefficient_mu    20.501
_exptl_absorpt_correction_T_max  0.017
_exptl_absorpt_correction_T_min  0.023
_exptl_crystal_colour            'light yellow'
_exptl_crystal_density_diffrn    2.786
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             856
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.200
_exptl_crystal_size_min          0.200
_refine_diff_density_max         7.186
_refine_diff_density_min         -3.117
_refine_diff_density_rms         0.687
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.15(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.120
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     144
_refine_ls_number_reflns         3814
_refine_ls_number_restraints     167
_refine_ls_restrained_S_all      1.114
_refine_ls_R_factor_all          0.2858
_refine_ls_R_factor_gt           0.2127
_refine_ls_shift/su_max          0.030
_refine_ls_shift/su_mean         0.003
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1500P)^2^+3.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.4561
_refine_ls_wR_factor_ref         0.4898
_reflns_number_gt                1780
_reflns_number_total             3814
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cm1c02084_si_004.cif
_cod_data_source_block           R_423K
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               4004016