Directional Intermolecular Interactions for Precise Molecular Design of a High- T<sub>c</sub> Multiaxial Molecular Ferroelectric.
Yang, Chen-Kai; Chen, Wang-Nan; Ding, Yan-Ting; Wang, Jing; Rao, Yin; Liao, Wei-Qiang; Xie, Yongfa; Zou, Wennan; Xiong, Ren-Gen; Journal of the American Chemical Society 141 (2019) 1781–1787; doi:10.1021/jacs.8b13223

data_4128074
_publ_section_title
;
 Directional Intermolecular Interactions for Precise Molecular Design of a
 High- T<sub>c</sub> Multiaxial Molecular Ferroelectric.
;
_journal_issue                   4
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              1781
_journal_page_last               1787
_journal_paper_doi               10.1021/jacs.8b13223
_journal_volume                  141
_journal_year                    2019
_chemical_formula_moiety         'C8 H16 Cl N O4'
_chemical_formula_sum            'C8 H16 Cl N O4'
_chemical_formula_weight         225.67
_space_group_crystal_system      orthorhombic
_space_group_IT_number           62
_space_group_name_Hall           '-P 2ac 2n'
_space_group_name_H-M_alt        'P n m a'
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_atom_sites_solution_hydrogens   difmap
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.4473(7)
_cell_length_b                   8.1623(6)
_cell_length_c                   11.6646(7)
_cell_measurement_reflns_used    2540
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      29.7830
_cell_measurement_theta_min      3.0300
_cell_volume                     1089.90(12)
_computing_cell_refinement       'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_data_collection       'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_data_reduction        'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_molecular_graphics    'DIAMOND (Brandenburg & Putz, 2005)'
_computing_publication_material  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      298(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       'four-circle diffractometer'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0128
_diffrn_reflns_av_unetI/netI     0.0130
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            4911
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        24.996
_diffrn_reflns_theta_max         24.996
_diffrn_reflns_theta_min         2.493
_diffrn_source                   'Rotating-anode X-ray tube'
_exptl_absorpt_coefficient_mu    0.341
_exptl_absorpt_correction_T_max  0.931
_exptl_absorpt_correction_T_min  0.928
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.375
_exptl_crystal_description       block
_exptl_crystal_F_000             480
_exptl_crystal_size_max          0.220
_exptl_crystal_size_mid          0.210
_exptl_crystal_size_min          0.210
_refine_diff_density_max         0.663
_refine_diff_density_min         -0.407
_refine_diff_density_rms         0.109
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.011
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     127
_refine_ls_number_reflns         1032
_refine_ls_number_restraints     53
_refine_ls_restrained_S_all      1.117
_refine_ls_R_factor_all          0.1297
_refine_ls_R_factor_gt           0.1208
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.2000P)^2^+2.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.3244
_refine_ls_wR_factor_ref         0.3355
_reflns_Friedel_coverage         0.000
_reflns_number_gt                856
_reflns_number_total             1032
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja8b13223_si_006.cif
_cod_data_source_block           Pnma
_cod_database_code               4128074
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.929
_shelx_estimated_absorpt_t_max   0.932
_shelx_res_checksum              3598
_shelx_hkl_checksum              18704