A new high-pressure benzocaine polymorph — towards understanding the molecular aggregation in crystals of an important active pharmaceutical ingredient (API)
Patyk-Kaźmierczak, Ewa; Kaźmierczak, Michał; Acta Crystallographica Section B 76 (2020) –; doi:10.1107/S2052520619016548

data_2108579
_publ_section_title
;
 A new high-pressure benzocaine polymorph --- towards understanding the
 molecular aggregation in crystals of an important active pharmaceutical
 ingredient (API)
;
_journal_coeditor_code           LO5062SUP1
_journal_issue                   1
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first
;
;
_journal_paper_doi               10.1107/S2052520619016548
_journal_volume                  76
_journal_year                    2020
_chemical_formula_moiety         'C9 H11 N O2'
_chemical_formula_sum            'C9 H11 N O2'
_chemical_formula_weight         165.19
_chemical_name_common            Benzocaine
_chemical_name_systematic        '4-aminobenzoic acid ethyl ester'
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_audit_creation_date             2019-03-14
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_cell_angle_alpha                90
_cell_angle_beta                 96.05(5)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.3410(7)
_cell_length_b                   5.1594(5)
_cell_length_c                   24.52(6)
_cell_measurement_reflns_used    869
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      23.3170
_cell_measurement_theta_min      4.0100
_cell_volume                     798(2)
_computing_cell_refinement       'CrysAlisPro 1.171.38.41 (Rigaku OD, 2015)'
_computing_data_collection       'CrysAlisPro 1.171.38.41 (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.38.41 (Rigaku OD, 2015)'
_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 (Sheldrick, 2015)'
_diffrn_ambient_temperature      298(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 16.2413
_diffrn_detector_type            Eos
_diffrn_measured_fraction_theta_full 0.192
_diffrn_measured_fraction_theta_max 0.175
_diffrn_measurement_details
;
List of Runs (angles in degrees, time in seconds):

  # Type    Start    End  Width  t~exp~   \w     \q     \k     \f   Frames
--------------------------------------------------------------------------
  1  \f    -35.00  19.75   0.75   20.00   0.00 -30.00   0.00    --    73
  2  \f    140.00 200.00   0.75   20.00   0.00 -30.00   0.00    --    80
  3  \f    160.00 217.00   0.75   20.00   0.00  30.00   0.00    --    76
  4  \f    -20.00  34.75   0.75   20.00   0.00  30.00   0.00    --    73
  5  \w    -24.00  24.00   0.75   20.00    --   30.00  39.46 -12.90   64
  6  \w    -24.00  24.00   0.75   20.00    --   30.00  39.46 167.10   64
  7  \w    -50.00  10.00   0.75   20.00    --  -30.00  39.46 167.10   80
  8  \w    -50.00  10.00   0.75   20.00    --  -30.00  39.46 -12.90   80
  9  \w    -64.00  -8.50   0.75   20.00    --  -30.00  81.40 -28.90   74
 10  \w    -64.00  -8.50   0.75   20.00    --  -30.00  81.40 151.10   74
 11  \w    -19.00   8.00   0.75   20.00    --   30.00  81.40 151.10   36
 12  \w    -19.00   8.00   0.75   20.00    --   30.00  81.40 -28.90   36
 13  \w    -43.00 -21.25   0.75   20.00    --   30.00 134.60 -56.90   29
 14  \w    -43.00 -21.25   0.75   20.00    --   30.00 134.60 123.10   29
 15  \w    -90.00 -36.00   0.75   20.00    --  -30.00 134.60 123.10   72
 16  \w    -90.00 -36.00   0.75   20.00    --  -30.00 134.60 -56.90   72
;
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'Xcalibur, Eos'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_orient_matrix_type
'CrysAlisPro convention (1999,Acta A55,543-557)'
_diffrn_orient_matrix_UB_11      0.0065325000
_diffrn_orient_matrix_UB_12      -0.0091236000
_diffrn_orient_matrix_UB_13      0.0291342000
_diffrn_orient_matrix_UB_21      -0.1071628000
_diffrn_orient_matrix_UB_22      0.0394894000
_diffrn_orient_matrix_UB_23      -0.0008199000
_diffrn_orient_matrix_UB_31      -0.0327501000
_diffrn_orient_matrix_UB_32      -0.1309874000
_diffrn_orient_matrix_UB_33      -0.0022631000
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0536
_diffrn_reflns_av_unetI/netI     0.0359
_diffrn_reflns_Laue_measured_fraction_full 0.192
_diffrn_reflns_Laue_measured_fraction_max 0.175
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       5
_diffrn_reflns_limit_l_min       -5
_diffrn_reflns_number            2437
_diffrn_reflns_point_group_measured_fraction_full 0.192
_diffrn_reflns_point_group_measured_fraction_max 0.175
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.499
_diffrn_reflns_theta_min         4.037
_diffrn_source                   'fine-focus sealed X-ray tube'
_diffrn_source_type              'Enhance (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    0.098
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.01961
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; CrysAlisPro 1.171.38.41 (Rigaku Oxford Diffraction, 2015) Empirical 
absorption correction using spherical harmonics, implemented in SCALE3 
ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.375
_exptl_crystal_description       plate
_exptl_crystal_F_000             352
_exptl_crystal_recrystallization_method
; Crystal grown in diamond-anvil cell from MeOH:EtOH:H2O (VOL. 16:3:1) 
mixture at 0.78 GPa
;
_exptl_crystal_size_max          0.43
_exptl_crystal_size_mid          0.31
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.075
_refine_diff_density_min         -0.082
_refine_diff_density_rms         0.023
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.076
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     111
_refine_ls_number_reflns         289
_refine_ls_number_restraints     132
_refine_ls_restrained_S_all      0.858
_refine_ls_R_factor_all          0.0615
_refine_ls_R_factor_gt           0.0426
_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^)+(0.0968P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1053
_refine_ls_wR_factor_ref         0.1209
_reflns_Friedel_coverage         0.000
_reflns_number_gt                224
_reflns_number_total             289
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            lo5062sup1.cif
_cod_data_source_block           BZC_a5
_cod_database_code               2108579
_cod_database_fobs_code          2108579
_shelx_shelxl_version_number     2014/7
_chemical_oxdiff_formula         'C36  H44  N4  O8  '
_shelx_estimated_absorpt_t_max   0.990
_shelx_estimated_absorpt_t_min   0.959
_reflns_odcompleteness_completeness 17.45
_reflns_odcompleteness_iscentric 1
_reflns_odcompleteness_theta     26.44
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups, All N(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2. Rigid bond restraints
 C7, O2, C8, C9
 with sigma for 1-2 distances of 0.01 and sigma for 1-3 distances of 0.01
 N1, C1
 with sigma for 1-2 distances of 0.02 and sigma for 1-3 distances of 0.02
3. Uiso/Uaniso restraints and constraints
C5 \\sim C6 \\sim C1 \\sim C2 \\sim C3 \\sim C4: within 2A with sigma of 0.02
and sigma for terminal atoms of 0.04
C7 \\sim O2 \\sim C8 \\sim C9: within 2A with sigma of 0.02 and sigma for
terminal atoms of 0.04
Uanis(O1) \\sim Ueq: with sigma of 0.01 and sigma for terminal atoms of 0.02
Uanis(C5) \\sim Ueq, Uanis(O2) \\sim Ueq, Uanis(C7) \\sim Ueq, Uanis(C8) \\sim
Ueq, Uanis(C4) \\sim Ueq, Uanis(C9) \\sim Ueq, Uanis(C3) \\sim Ueq, Uanis(C6)
\\sim Ueq, Uanis(C2) \\sim Ueq, Uanis(C1) \\sim Ueq, Uanis(N1) \\sim Ueq: with
sigma of 0.02 and sigma for terminal atoms of 0.04
4.a Rotating group:
 N1(H1A,H1B)
4.b Secondary CH2 refined with riding coordinates:
 C8(H8A,H8B)
4.c Aromatic/amide H refined with riding coordinates:
 C2(H2), C5(H5), C6(H6), C3(H3)
4.d Idealised Me refined as rotating group:
 C9(H9A,H9B,H9C)
;
_shelx_res_checksum              80633
_shelx_hkl_checksum              8113
_olex2_exptl_crystal_mounting_method 'Crystal mounted in diamond-anvil cell'
_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 33.198
_oxdiff_exptl_absorpt_empirical_full_min 0.579