[Methylhydrazinium]2PbBr4, a Ferroelectric Hybrid Organic‒Inorganic Perovskite with Multiple Nonlinear Optical Outputs
Mączka, Mirosław; Zaręba, Jan K.; Gągor, Anna; Stefańska, Dagmara; Ptak, Maciej; Roleder, Krystian; Kajewski, Dariusz; Soszyński, Andrzej; Fedoruk, Katarzyna; Sieradzki, Adam; Chemistry of Materials  (2021) –; doi:10.1021/acs.chemmater.0c04440

data_4003896
_publ_section_title
;
 [Methylhydrazinium]2PbBr4, a Ferroelectric Hybrid Organic--Inorganic
 Perovskite with Multiple Nonlinear Optical Outputs
;
_journal_name_full               'Chemistry of Materials'
_journal_paper_doi               10.1021/acs.chemmater.0c04440
_journal_year                    2021
_chemical_formula_sum            'C2 H14 Br4 N4 Pb'
_chemical_formula_weight         621.00
_space_group_crystal_system      orthorhombic
_space_group_IT_number           31
_space_group_name_Hall           'P 2ac -2'
_space_group_name_H-M_alt        'P m n 21'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2018/3
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   17.8177(10)
_cell_length_b                   6.0555(3)
_cell_length_c                   6.0155(3)
_cell_measurement_reflns_used    3137
_cell_measurement_temperature    300.1(2)
_cell_measurement_theta_max      29.2190
_cell_measurement_theta_min      3.4120
_cell_volume                     649.04(6)
_computing_cell_refinement       'CrysAlisPro 1.171.38.46 (Rigaku OD, 2015)'
_computing_data_collection       'CrysAlisPro 1.171.38.46 (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.38.46 (Rigaku OD, 2015)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_diffrn_ambient_environment      air
_diffrn_ambient_temperature      300.1(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 10.6249
_diffrn_detector_type            Atlas
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.916
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'Xcalibur, Atlas'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0265
_diffrn_reflns_av_unetI/netI     0.0292
_diffrn_reflns_Laue_measured_fraction_full 0.984
_diffrn_reflns_Laue_measured_fraction_max 0.916
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       6
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            4404
_diffrn_reflns_point_group_measured_fraction_full 0.901
_diffrn_reflns_point_group_measured_fraction_max 0.821
_diffrn_reflns_theta_full        28.000
_diffrn_reflns_theta_max         29.298
_diffrn_reflns_theta_min         3.364
_diffrn_source                   'fine-focus sealed X-ray tube'
_diffrn_source_type              'Enhance (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    25.271
_exptl_absorpt_correction_T_max  0.278
_exptl_absorpt_correction_T_min  0.018
_exptl_absorpt_correction_type   gaussian
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.38.46 (Rigaku Oxford Diffraction, 2015)
Numerical absorption correction based on gaussian integration over
			a multifaceted crystal model
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_density_diffrn    3.178
_exptl_crystal_description       plate
_exptl_crystal_F_000             552
_exptl_crystal_size_max          0.315
_exptl_crystal_size_mid          0.273
_exptl_crystal_size_min          0.114
_refine_diff_density_max         1.023
_refine_diff_density_min         -1.432
_refine_diff_density_rms         0.185
_refine_ls_abs_structure_details
;
 Refined as an inversion twin.
;
_refine_ls_abs_structure_Flack   0.491(18)
_refine_ls_extinction_coef       0.0034(4)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2018/3 (Sheldrick 2018)'
_refine_ls_goodness_of_fit_ref   1.022
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     65
_refine_ls_number_reflns         1505
_refine_ls_number_restraints     5
_refine_ls_restrained_S_all      1.021
_refine_ls_R_factor_all          0.0320
_refine_ls_R_factor_gt           0.0280
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0403P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0628
_refine_ls_wR_factor_ref         0.0644
_reflns_Friedel_coverage         0.645
_reflns_Friedel_fraction_full    0.801
_reflns_Friedel_fraction_max     0.707
_reflns_number_gt                1368
_reflns_number_total             1505
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            cm0c04440_si_004.cif
_cod_data_source_block           III
_cod_original_cell_volume        649.03(6)
_cod_database_code               4003896
_shelx_shelxl_version_number     2018/3
_oxdiff_exptl_absorpt_empirical_full_min 0.857
_oxdiff_exptl_absorpt_empirical_full_max 1.153
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
;
_shelx_res_checksum              93060
_shelx_hkl_checksum              96517