A ferroelectric proton conductor with colossal polarization induced by in-plane symmetry breaking in a two-dimensional coordination polymer.
Song, Yanqing; Tsuji, Yuta; Sugimoto, Kunihisa; Kikuchi, Takashi; Shi, Yuxin; Murakami, Yusuke; Hiramatsu, Kotaro; Le Ouay, Benjamin; Ohba, Masaaki; Ohtani, Ryo; Chemical science 16 (2025) 13413–13421; doi:10.1039/d4sc08700c

data_1574938
_publ_section_title
;
 A ferroelectric proton conductor with colossal polarization induced by
 in-plane symmetry breaking in a two-dimensional coordination polymer.
;
_journal_issue                   29
_journal_name_full               'Chemical science'
_journal_page_first              13413
_journal_page_last               13421
_journal_paper_doi               10.1039/d4sc08700c
_journal_volume                  16
_journal_year                    2025
_chemical_formula_moiety         'C38 H28 Mn2 N10 O4 Re'
_chemical_formula_sum            'C38 H28 Mn2 N10 O4 Re'
_chemical_formula_weight         984.78
_space_group_crystal_system      tetragonal
_space_group_IT_number           130
_space_group_name_Hall           '-P 4a 2ac'
_space_group_name_H-M_alt        'P 4/n c c :2'
_atom_sites_solution_hydrogens   geom
_audit_creation_date             2024-11-28
_audit_creation_method
;
Olex2 1.5
(compiled 2024.02.16 svn.r378c4104 for OlexSys, GUI svn.r6928)
;
_audit_update_record
;
2024-12-16 deposited with the CCDC.	2025-06-02 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   14.4061(3)
_cell_length_b                   14.4061(3)
_cell_length_c                   18.3403(8)
_cell_measurement_reflns_used    8233
_cell_measurement_temperature    300
_cell_measurement_theta_max      29.4520
_cell_measurement_theta_min      2.5760
_cell_volume                     3806.3(2)
_computing_cell_refinement       'CrysAlisPro 1.171.39.46e (Rigaku OD, 2018)'
_computing_data_collection       'CrysAlisPro 1.171.39.46e (Rigaku OD, 2018)'
_computing_data_reduction        'CrysAlisPro 1.171.39.46e (Rigaku OD, 2018)'
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      300.00
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.901
_diffrn_measurement_details
;
List of Runs (angles in degrees, time in seconds):

  # Type    Start    End  Width  t~exp~   \w     \q     \k     \f   Frames
  1  \w     35.00  61.00   0.50    2.00    --    5.00  45.00  30.00   52
  2  \w      3.00  29.00   0.50    2.00    --    5.00  45.00  30.00   52
  3  \w    -99.00   8.00   0.50    2.00    --  -10.20  45.00  60.00  214
;
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'XtaLAB AFC10 (RCD3): fixed-chi single'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0238
_diffrn_reflns_av_unetI/netI     0.0194
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.901
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            17423
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.901
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         31.027
_diffrn_reflns_theta_min         2.633
_exptl_absorpt_coefficient_mu    3.880
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.60833
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.39.46e (Rigaku Oxford Diffraction, 2018)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            brown
_exptl_crystal_colour_primary    brown
_exptl_crystal_density_diffrn    1.719
_exptl_crystal_description       block
_exptl_crystal_F_000             1932
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.2
_refine_diff_density_max         1.570
_refine_diff_density_min         -1.491
_refine_diff_density_rms         0.113
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.359
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     129
_refine_ls_number_reflns         2753
_refine_ls_number_restraints     45
_refine_ls_restrained_S_all      1.388
_refine_ls_R_factor_all          0.0721
_refine_ls_R_factor_gt           0.0572
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0123P)^2^+22.1364P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1098
_refine_ls_wR_factor_ref         0.1135
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2272
_reflns_number_total             2753
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4sc08700c2.cif
_cod_data_source_block           mnremecn_300_c_2
_cod_depositor_comments
'Adding full bibliography for 1574937--1574947.cif.'
_cod_original_sg_symbol_H-M      'P 4/n c c'
_cod_database_code               1574938
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.511
_shelx_estimated_absorpt_t_min   0.389
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
2. Uiso/Uaniso restraints and constraints
Re1 \\sim N4 \\sim C10 \\sim C11: within 2.5A with sigma of 0.01 and sigma for
terminal atoms of 0.02 within 2.5A
C2 \\sim C3 \\sim C4: within 2A with sigma of 0.04 and sigma for terminal atoms
of 0.08 within 2A
3. Rigid body (RIGU) restrains
 C2, C3, C4
 with sigma for 1-2 distances of 0.004 and sigma for 1-3 distances of 0.004
4.a Secondary CH2 refined with riding coordinates:
 C8(H8A,H8B)
4.b Aromatic/amide H refined with riding coordinates:
 C2(H2), C7(H7), C4(H4), C3(H3), C5(H5)
;
_shelx_res_checksum              26589
_olex2_submission_special_instructions 'No special instructions were received'
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
;