Record-high Thermal Stability Achieved in a Novel Single-Component All-organic Ferroelectric Crystal Exhibiting Polymorphism
Dutta, Sanjay; ., Vikas; Yadav, Ashok; Ramamoorthy, Boomishankar; Bala, Anu; Kumar, Vijay; Chakraborty, Tirthankar; Elizabeth, Suja; Munshi, Parthapratim; Chemical Communications  (2019) –; doi:10.1039/C9CC04434E

data_7123796
_publ_section_title
;
 Record-high Thermal Stability Achieved in a Novel Single-Component
 All-organic Ferroelectric Crystal Exhibiting Polymorphism
;
_journal_name_full               'Chemical Communications'
_journal_paper_doi               10.1039/C9CC04434E
_journal_year                    2019
_chemical_formula_moiety         'C22 H16 N2'
_chemical_formula_sum            'C22 H16 N2'
_chemical_formula_weight         308.37
_chemical_melting_point          563
_chemical_name_common            2-(p-tolyl)-1H-phenanthro[9,10-d]imidazole
_chemical_name_systematic        2-(p-tolyl)-1H-phenanthro[9,10-d]imidazole
_space_group_crystal_system      tetragonal
_space_group_IT_number           114
_space_group_name_Hall           'P -4 2n'
_space_group_name_H-M_alt        'P -4 21 c'
_symmetry_space_group_name_Hall  'P -4 2n'
_symmetry_space_group_name_H-M   'P -4 21 c'
_atom_sites_solution_hydrogens   difmap
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2019-02-06 deposited with the CCDC.    2019-07-09 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   19.2160(4)
_cell_length_b                   19.2160(4)
_cell_length_c                   8.9740(2)
_cell_measurement_reflns_used    9373
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      26.36
_cell_measurement_theta_min      2.50
_cell_volume                     3313.69(12)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014 (Sheldrick 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0410
_diffrn_reflns_av_unetI/netI     0.0226
_diffrn_reflns_Laue_measured_fraction_full 0.995
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            22529
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.374
_diffrn_reflns_theta_min         2.370
_diffrn_source                   Xray
_exptl_absorpt_coefficient_mu    0.073
_exptl_absorpt_correction_T_max  0.9585
_exptl_absorpt_correction_T_min  0.8720
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.236
_exptl_crystal_description       Block
_exptl_crystal_F_000             1296
_exptl_crystal_size_max          0.253
_exptl_crystal_size_mid          0.217
_exptl_crystal_size_min          0.200
_refine_diff_density_max         0.133
_refine_diff_density_min         -0.137
_refine_diff_density_rms         0.027
_refine_ls_abs_structure_details
;
 Flack x determined using 1262 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.026
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     281
_refine_ls_number_reflns         3382
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.026
_refine_ls_R_factor_all          0.0390
_refine_ls_R_factor_gt           0.0343
_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^)+(0.0510P)^2^+0.3680P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0849
_refine_ls_wR_factor_ref         0.0889
_reflns_Friedel_coverage         0.777
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     1.000
_reflns_number_gt                3099
_reflns_number_total             3382
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9cc04434e2.cif
_cod_data_source_block           1N_298K
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'Multi-Scan' changed to
'multi-scan' according to
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4973 2017-02-22 13:04:09Z antanas 
;
_cod_original_cell_volume        3313.69(16)
_cod_database_code               7123796
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.982
_shelx_estimated_absorpt_t_max   0.986
_shelx_res_checksum              68871