A first-order phase transition in Blatter's radical at high pressure
Broadhurst, Edward T.; Wilson, Cameron J. G.; Zissimou, Georgia A.; Nudelman, Fabio; Constantinides, Christos P.; Koutentis, Panayiotis A.; Parsons, Simon; Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials 78 (2022) –; doi:10.1107/S2052520622000191

data_2022549
_publ_section_title
;
 A first-order phase transition in Blatter's radical at high pressure
;
_journal_coeditor_code           UM5054
_journal_issue                   2
_journal_name_full
'Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials'
_journal_paper_doi               10.1107/S2052520622000191
_journal_volume                  78
_journal_year                    2022
_chemical_formula_moiety         'C19 H14 N3'
_chemical_formula_sum            'C19 H14 N3'
_chemical_formula_weight         284.33
_chemical_name_systematic        1,3-Diphenyl-1,2,4-benzotriazin-4(1H)-yl
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2021-04-28
_audit_creation_method
;
Olex2 1.3
(compiled 2020.11.12 svn.r5f609507 for OlexSys, GUI svn.r6272)
;
_cell_angle_alpha                90
_cell_angle_beta                 99.441(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.4887(4)
_cell_length_b                   6.9632(2)
_cell_length_c                   19.8755(7)
_cell_measurement_reflns_used    1691
_cell_measurement_temperature    298
_cell_measurement_theta_max      26.851
_cell_measurement_theta_min      3.104
_cell_volume                     1431.94(9)
_computing_cell_refinement       'SAINT V8.40A (Bruker, 2019)'
_computing_data_reduction        'SAINT V8.40A (Bruker, 2019)'
_computing_molecular_graphics    'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL  (Sheldrick, 2008)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      298
_diffrn_detector                 'Bruker APEX2 area detector'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'CCD area detector'
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker SMART APEX2 area detector'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'mirror optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0440
_diffrn_reflns_av_unetI/netI     0.0438
_diffrn_reflns_Laue_measured_fraction_full 0.991
_diffrn_reflns_Laue_measured_fraction_max 0.991
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            8006
_diffrn_reflns_point_group_measured_fraction_full 0.991
_diffrn_reflns_point_group_measured_fraction_max 0.991
_diffrn_reflns_theta_full        25.027
_diffrn_reflns_theta_max         25.027
_diffrn_reflns_theta_min         3.105
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_current           1.4
_diffrn_source_power             0.07
_diffrn_source_type              'Incoatec I\ms'
_diffrn_source_voltage           50.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.080
_exptl_absorpt_correction_T_max  0.7461
_exptl_absorpt_correction_T_min  0.6479
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.1139 before and 0.0475 after correction.
The Ratio of minimum to maximum transmission is 0.8684.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            'clear dark brown'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   dark
_exptl_crystal_colour_primary    brown
_exptl_crystal_density_diffrn    1.319
_exptl_crystal_description       block
_exptl_crystal_F_000             596
_exptl_crystal_preparation       'As recieved'
_exptl_crystal_size_max          0.6
_exptl_crystal_size_mid          0.4
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.200
_refine_diff_density_min         -0.171
_refine_diff_density_rms         0.043
_refine_ls_extinction_coef       0.047(9)
_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   1.055
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     200
_refine_ls_number_reflns         2511
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0995
_refine_ls_R_factor_gt           0.0567
_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^)+(0.0809P)^2^+0.4711P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1379
_refine_ls_wR_factor_ref         0.1880
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1422
_reflns_number_total             2511
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            um5054sup1.cif
_cod_data_source_block           mo_sp20030_0m_0p0000GPa
_cod_database_code               2022549
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.984
_shelx_estimated_absorpt_t_min   0.954
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
2.a Aromatic/amide H refined with riding coordinates:
 C7(H7), C6(H6), C5(H5), C4(H4), C19(H19), C18(H18), C17(H17), C16(H16),
 C15(H15), C9(H9), C10(H10), C11(H11), C12(H12), C13(H13)
;
_shelx_res_checksum              96223
_shelx_hkl_checksum              93178
_olex2_exptl_crystal_mounting_method 'MiToGen loop'
_olex2_submission_original_sample_id SP20030
_olex2_submission_special_instructions 'No special instructions were received'
_cod_database_fobs_code 2022549