The importance of configurational disorder in crystal structure prediction: the case of loratadine.
Woollam, Grahame R.; Neumann, Marcus A.; Wagner, Trixie; Davey, Roger J.; Faraday discussions 211 (2018) 209–234; doi:10.1039/c8fd00072g

data_1549737
_publ_section_title
;
 The importance of configurational disorder in crystal structure
 prediction: the case of loratadine.
;
_journal_issue                   0
_journal_name_full               'Faraday discussions'
_journal_page_first              209
_journal_page_last               234
_journal_paper_doi               10.1039/c8fd00072g
_journal_volume                  211
_journal_year                    2018
_chemical_formula_sum            'C22 H23 Cl N2 O2'
_chemical_formula_weight         382.87
_chemical_name_common            LoratadineI-0deg(L13)
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_block_doi                 10.5517/ccdc.csd.cc1zm8gb
_audit_creation_method           SHELXL-97
_audit_update_record
;
2018-04-09 deposited with the CCDC.
2018-07-26 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 109.077(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   28.201(6)
_cell_length_b                   4.9720(10)
_cell_length_c                   29.106(7)
_cell_measurement_reflns_used    7353
_cell_measurement_temperature    273(2)
_cell_measurement_theta_max      68.2
_cell_measurement_theta_min      3.21
_cell_volume                     3857.0(15)
_computing_cell_refinement       'SAINT V7.36A (Bruker AXS, 2004)'
_computing_data_collection       'SMART V5.630 (Bruker AXS, 2003)'
_computing_data_reduction        'SAINT V7.36A (Bruker AXS, 2004)'
_computing_molecular_graphics    'PLATON (Spek, 2004)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      273(2)
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'three-circle goniometer'
_diffrn_measurement_method       \w-scans
_diffrn_radiation_monochromator  'multilayer mirrors'
_diffrn_radiation_source         microsource
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0325
_diffrn_reflns_av_sigmaI/netI    0.0289
_diffrn_reflns_limit_h_max       33
_diffrn_reflns_limit_h_min       -33
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       34
_diffrn_reflns_limit_l_min       -34
_diffrn_reflns_number            17068
_diffrn_reflns_theta_full        66.56
_diffrn_reflns_theta_max         66.56
_diffrn_reflns_theta_min         3.21
_exptl_absorpt_coefficient_mu    1.906
_exptl_absorpt_correction_T_max  0.9450
_exptl_absorpt_correction_T_min  0.4205
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2008)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.319
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1616
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: acetonitrile'
_exptl_crystal_size_max          0.55
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.346
_refine_diff_density_min         -0.443
_refine_diff_density_rms         0.048
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.105
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     292
_refine_ls_number_reflns         3352
_refine_ls_number_restraints     186
_refine_ls_restrained_S_all      1.106
_refine_ls_R_factor_all          0.0541
_refine_ls_R_factor_gt           0.0458
_refine_ls_shift/su_max          0.012
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0685P)^2^+3.6428P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1252
_refine_ls_wR_factor_ref         0.1431
_reflns_number_gt                2881
_reflns_number_total             3352
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c8fd00072g2.cif
_cod_data_source_block           GWO11b
_cod_depositor_comments
'Adding full bibliography for 1549732--1549738.cif.'
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               1549737
_chemical_source_common          ACN