Effects of Crystal Form on Solubility and Pharmacokinetics: A Crystal Engineering Case Study of Lamotrigine
Cheney, Miranda L.; Shan, Ning; Healey, Elisabeth R.; Hanna, Mazen; Wojtas, Lukasz; Zaworotko, Michael J.; Sava, Vasyl; Song, Shijie; Sanchez-Ramos, Juan R.; Crystal Growth & Design 10 (2010) 394–; doi:10.1021/cg901010v

data_4502331
_publ_section_title
;
 Effects of Crystal Form on Solubility and Pharmacokinetics: A Crystal
 Engineering Case Study of Lamotrigine
;
_journal_issue                   1
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              394
_journal_paper_doi               10.1021/cg901010v
_journal_volume                  10
_journal_year                    2010
_chemical_formula_moiety         'C9 H7 Cl2 N5, C8 H8 O3'
_chemical_formula_sum            'C17 H15 Cl2 N5 O3'
_chemical_formula_weight         408.24
_chemical_name_common            1
_chemical_name_systematic
; 
 Lamotrigine methylparaben cocrystal form I
;
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 92.795(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   5.2729(9)
_cell_length_b                   14.330(3)
_cell_length_c                   23.822(4)
_cell_measurement_reflns_used    750
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      38.955
_cell_measurement_theta_min      4.456
_cell_volume                     1797.9(6)
_computing_cell_refinement       'SAINT (Bruker, 2002)'
_computing_data_collection       'SMART (Bruker, 2002)'
_computing_data_reduction        'SAINT (Bruker, 2002)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'BRUKER SMART APEXII CCD'
_diffrn_measurement_method       'omega scans'
_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  0.0756
_diffrn_reflns_av_sigmaI/netI    0.1005
_diffrn_reflns_limit_h_max       3
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            8611
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         1.71
_exptl_absorpt_coefficient_mu    0.391
_exptl_absorpt_correction_T_max  0.9620
_exptl_absorpt_correction_T_min  0.8918
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS; (Sheldrick, 2003)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.508
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             840
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.273
_refine_diff_density_min         -0.306
_refine_diff_density_rms         0.072
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.095
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     245
_refine_ls_number_reflns         3159
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.095
_refine_ls_R_factor_all          0.1094
_refine_ls_R_factor_gt           0.0626
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0280P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1002
_refine_ls_wR_factor_ref         0.1133
_reflns_number_gt                2056
_reflns_number_total             3159
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg901010v_si_004.cif
_cod_data_source_block           1_mp1_mc180
_cod_original_sg_symbol_H-M      P21/n
_cod_database_code               4502331