Synthon Hierarchies in Crystal Forms Composed of Theophylline and Hydroxybenzoic Acids: Cocrystal Screening via Solution-Mediated Phase Transformation
Bučar, Dejan-Krešimir; Henry, Rodger F.; Zhang, Geoff G. Z.; MacGillivray, Leonard R.; Crystal Growth & Design 14 (2014) 5318–; doi:10.1021/cg501204k

data_4511899
_publ_section_title
;
 Synthon Hierarchies in Crystal Forms Composed of Theophylline and
 Hydroxybenzoic Acids: Cocrystal Screening via Solution-Mediated Phase
 Transformation
;
_journal_issue                   10
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              5318
_journal_paper_doi               10.1021/cg501204k
_journal_volume                  14
_journal_year                    2014
_chemical_formula_moiety         'C7 H8 N4 O2, C7 H6 O4'
_chemical_formula_sum            'C14 H14 N4 O6'
_chemical_formula_weight         334.29
_chemical_name_common            'theopylline 3,4-dihydroxybenzoic acid complex'
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                103.147(2)
_cell_angle_beta                 104.970(2)
_cell_angle_gamma                105.358(2)
_cell_formula_units_Z            2
_cell_length_a                   8.0694(12)
_cell_length_b                   8.5782(13)
_cell_length_c                   11.5578(17)
_cell_measurement_reflns_used    3955
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.6045
_cell_measurement_theta_min      2.596
_cell_volume                     706.70(18)
_computing_cell_refinement       'Apex2 v2.1-4 (Bruker, 2007)'
_computing_data_collection       'Apex2 v2.1-4 (Bruker, 2007)'
_computing_data_reduction        'Apex2 v2.1-4 (Bruker, 2007)'
_computing_molecular_graphics    'ORTEP-3 for Windows v2.01'
_computing_publication_material  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.926
_diffrn_measured_fraction_theta_max 0.926
_diffrn_measurement_device_type  CCD
_diffrn_measurement_method       'omega scan'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0266
_diffrn_reflns_av_sigmaI/netI    0.0286
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            8226
_diffrn_reflns_theta_full        28.39
_diffrn_reflns_theta_max         28.39
_diffrn_reflns_theta_min         1.92
_exptl_absorpt_coefficient_mu    0.125
_exptl_absorpt_correction_T_max  1.033
_exptl_absorpt_correction_T_min  0.949
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.571
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       parallelapiped
_exptl_crystal_F_000             348
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.328
_refine_diff_density_min         -0.288
_refine_diff_density_rms         0.060
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.810
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     231
_refine_ls_number_reflns         3287
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.810
_refine_ls_R_factor_all          0.0462
_refine_ls_R_factor_gt           0.0351
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+0.2132P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1028
_refine_ls_wR_factor_ref         0.1202
_reflns_number_gt                2609
_reflns_number_total             3287
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            cg501204k_si_002.cif
_cod_data_source_block           T34
_cod_depositor_comments
'Adding full bibliography for 4511895--4511900.cif.'
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4511899