Polymorphs, hydrates and solvates of a co-crystal of caffeine with anthranilic acid
Madusanka, Nadeesh; Eddleston, Mark D.; Arhangelskis, Mihails; Jones, William; Acta Crystallographica Section B 70 (2014) 72–80; doi:10.1107/S2052520613033167

data_2105786
_publ_section_title
;
 Polymorphs, hydrates and solvates of a co-crystal of caffeine with
 anthranilic acid
;
_journal_issue                   1
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              72
_journal_page_last               80
_journal_paper_doi               10.1107/S2052520613033167
_journal_volume                  70
_journal_year                    2014
_chemical_formula_moiety         'C8 H10 N4 O2, C7 H7 N O2, C8 H10'
_chemical_formula_sum            'C23 H27 N5 O4'
_chemical_formula_weight         437.50
_chemical_name_common            'caffeine:anthranilic acid mono o-xylene'
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 92.260(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.8492(3)
_cell_length_b                   6.7890(2)
_cell_length_c                   23.3960(7)
_cell_measurement_reflns_used    7864
_cell_measurement_temperature    180(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      1.00
_cell_volume                     2198.03(10)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor, 1997)'
_computing_data_collection       'Collect (Nonius, 1998)'
_computing_data_reduction
;
 HKL Denzo and Scalepack (Otwinowski & Minor, 1997)
;
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SIR-92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      180(2)
_diffrn_measured_fraction_theta_full 0.978
_diffrn_measured_fraction_theta_max 0.978
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_diffrn_measurement_method       'Thin slice \w and \f scans'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0363
_diffrn_reflns_av_sigmaI/netI    0.0694
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            13598
_diffrn_reflns_theta_full        27.46
_diffrn_reflns_theta_max         27.46
_diffrn_reflns_theta_min         3.74
_exptl_absorpt_coefficient_mu    0.093
_exptl_absorpt_correction_T_max  0.998
_exptl_absorpt_correction_T_min  0.851
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SORTAV (Blessing, 1995)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.322
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             928
_exptl_crystal_size_max          0.46
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.10
_refine_diff_density_max         1.350
_refine_diff_density_min         -0.595
_refine_diff_density_rms         0.115
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.547
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     236
_refine_ls_number_reflns         4909
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.547
_refine_ls_R_factor_all          0.1708
_refine_ls_R_factor_gt           0.1274
_refine_ls_shift/su_max          0.006
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.2000P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.4121
_refine_ls_wR_factor_ref         0.4355
_reflns_number_gt                2651
_reflns_number_total             4909
_reflns_threshold_expression     I>2\s(I)
_publcif_datablock.id            {83a61575-83d5-4158-8d5d-4c6801eb6399}
_cod_data_source_file            bi5010sup1.cif
_cod_data_source_block           o_Xylene_Monosolvate
_cod_original_cell_volume        2198.0(1)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2105786
_cod_database_fobs_code          2105786