The mechanism of two reversible phase transitions and dielectric anomalies in a single-component organic molecule 1-sulfo-4-dimethylamino-pyridinium
Yu, Zihong; You, Xiuli; Du, Wenqing; Peng, Ziqin; Guo, Wenjing; Wei, Zhenhong; CrystEngComm 25 (2023) 822–827; doi:10.1039/D2CE01521H

data_7246029
_publ_section_title
;
 The mechanism of two reversible phase transitions and dielectric
 anomalies in a single-component organic molecule
 1-sulfo-4-dimethylamino-pyridinium
;
_journal_issue                   5
_journal_name_full               CrystEngComm
_journal_page_first              822
_journal_page_last               827
_journal_paper_doi               10.1039/D2CE01521H
_journal_volume                  25
_journal_year                    2023
_chemical_formula_moiety         'C7 H10 N2 O4 S'
_chemical_formula_sum            'C7 H10 N2 O4 S'
_chemical_formula_weight         218.23
_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'
_atom_sites_solution_hydrogens   geom
_audit_creation_date             2022-12-11
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2022-12-15 deposited with the CCDC.	2022-12-21 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.6737(4)
_cell_length_b                   10.8610(4)
_cell_length_c                   6.7004(2)
_cell_measurement_reflns_used    1988
_cell_measurement_temperature    292.96(10)
_cell_measurement_theta_max      74.2530
_cell_measurement_theta_min      7.4880
_cell_volume                     922.30(5)
_computing_cell_refinement       'CrysAlisPro 1.171.41.108a (Rigaku OD, 2021)'
_computing_data_collection       'CrysAlisPro 1.171.41.108a (Rigaku OD, 2021)'
_computing_data_reduction        'CrysAlisPro 1.171.41.108a (Rigaku OD, 2021)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_environment      air
_diffrn_ambient_temperature      292.96(10)
_diffrn_detector                 'Hybrid Pixel Array Detector'
_diffrn_detector_area_resol_mean 10.0000
_diffrn_detector_type            HyPix
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.941
_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     -9.00  67.00   0.50    0.10    --   45.28 -73.00 159.00  152
  2  \w     48.00  83.00   0.50    0.40    --  107.00 -73.00 159.00   70
  3  \w     41.00  66.00   0.50    0.40    --  107.00 -61.00 120.00   50
  4  \w    128.00 169.00   0.50    0.40    --  107.00  45.00-180.00   82
  5  \w     -9.00  29.00   0.50    0.10    --  -45.28  19.00 -60.00   76
  6  \w    -65.00 -29.00   0.50    0.40    -- -102.00  73.00 -70.00   72
  7  \w    -68.00 -31.00   0.50    0.40    -- -102.00  61.00-120.00   74
  8  \w    -61.00 -32.00   0.50    0.40    -- -102.00  61.00 -90.00   58
  9  \w    -69.00 -31.00   0.50    0.40    -- -102.00  61.00  30.00   76
 10  \w    -62.00 -28.00   0.50    0.40    -- -102.00  59.00 157.00   68
 11  \w   -100.00 -34.00   0.50    0.40    -- -102.00  93.00  28.00  132
 12  \w   -106.00 -79.00   0.50    0.10    --  -45.28-125.00 -30.00   54
 13  \w   -117.00 -91.00   0.50    0.10    --  -45.28-125.00 -60.00   52
;
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'XtaLAB Synergy R, DW system, HyPix'
_diffrn_measurement_method       '\w scans'
_diffrn_orient_matrix_type
'CrysAlisPro convention (1999,Acta A55,543-557)'
_diffrn_orient_matrix_UB_11      0.0706833000
_diffrn_orient_matrix_UB_12      -0.0044041000
_diffrn_orient_matrix_UB_13      0.1869440000
_diffrn_orient_matrix_UB_21      0.0689585000
_diffrn_orient_matrix_UB_22      -0.0994472000
_diffrn_orient_matrix_UB_23      -0.0993926000
_diffrn_orient_matrix_UB_31      0.0709117000
_diffrn_orient_matrix_UB_32      0.1010640000
_diffrn_orient_matrix_UB_33      -0.0895127000
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0265
_diffrn_reflns_av_unetI/netI     0.0311
_diffrn_reflns_Laue_measured_fraction_full 0.995
_diffrn_reflns_Laue_measured_fraction_max 0.941
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            2788
_diffrn_reflns_point_group_measured_fraction_full 0.995
_diffrn_reflns_point_group_measured_fraction_max 0.941
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         75.788
_diffrn_reflns_theta_min         6.988
_diffrn_source                   'Rotating-anode X-ray tube'
_diffrn_source_type              'Rigaku (Cu) X-ray Source'
_exptl_absorpt_coefficient_mu    3.109
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.67530
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.41.108a (Rigaku Oxford Diffraction, 2021)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    1.572
_exptl_crystal_description       bulk
_exptl_crystal_F_000             456
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.447
_refine_diff_density_min         -0.562
_refine_diff_density_rms         0.096
_refine_ls_extinction_coef       0.028(6)
_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   1.111
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     91
_refine_ls_number_reflns         949
_refine_ls_number_restraints     59
_refine_ls_restrained_S_all      1.618
_refine_ls_R_factor_all          0.0787
_refine_ls_R_factor_gt           0.0735
_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^)+(0.1374P)^2^+0.4836P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2213
_refine_ls_wR_factor_ref         0.2287
_reflns_Friedel_coverage         0.000
_reflns_number_gt                821
_reflns_number_total             949
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d2ce01521h2.cif
_cod_data_source_block           yzh_211112_1_293k_auto
_cod_depositor_comments
'Adding full bibliography for 7246027--7246029.cif.'
_cod_database_code               7246029
_shelx_shelxl_version_number     2018/3
_chemical_oxdiff_formula         'C H O N S'
_shelx_estimated_absorpt_t_max   0.670
_shelx_estimated_absorpt_t_min   0.605
_diffrn_oxdiff_digest_frames
;
0132d3a003f3e726b1736eb7b77c4896060006180b2
;
_diffrn_oxdiff_digest_hkl
;
01d01f60091edcdda67e7180e1146089b37326
;
_reflns_odcompleteness_completeness 99.60
_reflns_odcompleteness_iscentric 1
_reflns_odcompleteness_theta     66.97
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2. Restrained distances
 S1-O1A
 1.48 with sigma of 0.02
 S1-O1A = S1-O2 = S1-O2A = S1-O1
 1.43 with sigma of 0.01
 S1-O2 \\sim S1-O2A
 with sigma of 0.02
 S1-O1 \\sim S1-O1A
 with sigma of 0.02
 S1-O1A \\sim S1-O2A \\sim S1-O2 \\sim S1-O1 \\sim S1-N1
 with sigma of 0.02
3. Rigid bond restraints
 S1, O1, O2, O1A, O2A
 with sigma for 1-2 distances of 0.01 and sigma for 1-3 distances of 0.01
4. Uiso/Uaniso restraints and constraints
Uanis(O2A) \\sim Ueq, Uanis(O2) \\sim Ueq, Uanis(O1A) \\sim Ueq, Uanis(O1)
\\sim Ueq: with sigma of 0.01 and sigma for terminal atoms of 0.01
5. Rigid body (RIGU) restrains
 S1, O1, O2, O1A, O2A
 with sigma for 1-2 distances of 0.01 and sigma for 1-3 distances of 0.01
6. Others
 Sof(O1A)=Sof(O2A)=1-FVAR(1)
 Sof(O1)=Sof(O2)=FVAR(1)
7.a Aromatic/amide H refined with riding coordinates:
 C1(H1), C2(H2)
7.b Idealised Me refined as rotating group:
 C4(H4A,H4B,H4C)
;
_shelx_res_checksum              7893
_shelx_hkl_checksum              77734
_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
;
_oxdiff_exptl_absorpt_empirical_full_max 2.266
_oxdiff_exptl_absorpt_empirical_full_min 0.484