Tetramorphs of the Antibiotic Drug Trimethoprim: Characterization and Stability
Maddileti, D.; Swapna, Battini; Nangia, Ashwini; Crystal Growth & Design 15 (2015) 1745–; doi:10.1021/cg501772t

data_4512813
_publ_section_title
;
 Tetramorphs of the Antibiotic Drug Trimethoprim: Characterization and
 Stability
;
_journal_issue                   4
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              1745
_journal_paper_doi               10.1021/cg501772t
_journal_volume                  15
_journal_year                    2015
_chemical_formula_moiety         'C14 H18 N4 O3'
_chemical_formula_sum            'C14 H18 N4 O3'
_chemical_formula_weight         290.32
_chemical_melting_point          475
_chemical_name_common            Trimethoprim
_chemical_name_systematic
; 
 5-(3, 4, 5-Trimethoxybenzyl)-2, 4-pyrimidinediamine 
;
_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                106.8710(10)
_cell_angle_beta                 101.686(2)
_cell_angle_gamma                111.8230(10)
_cell_formula_units_Z            2
_cell_length_a                   7.9202(8)
_cell_length_b                   10.4378(11)
_cell_length_c                   10.5434(11)
_cell_measurement_reflns_used    6419
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.02
_cell_measurement_theta_min      2.30
_cell_volume                     725.51(13)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and 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  0.0180
_diffrn_reflns_av_sigmaI/netI    0.0191
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            7521
_diffrn_reflns_theta_full        26.02
_diffrn_reflns_theta_max         26.02
_diffrn_reflns_theta_min         2.15
_exptl_absorpt_coefficient_mu    0.096
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.9814
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.329
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             308
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.249
_refine_diff_density_min         -0.237
_refine_diff_density_rms         0.054
_refine_ls_extinction_coef       0.074(6)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.102
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     210
_refine_ls_number_reflns         2828
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.102
_refine_ls_R_factor_all          0.0388
_refine_ls_R_factor_gt           0.0374
_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^)+(0.0562P)^2^+0.2000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1002
_refine_ls_wR_factor_ref         0.1017
_reflns_number_gt                2666
_reflns_number_total             2828
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg501772t_si_002.cif
_cod_data_source_block           From-1
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '475 K' was changed to '475' - the
value should be numeric and without a unit designator.

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 3086 2015-02-26 13:12:21Z robertas 

 Adding full bibliography for 4512813--4512814.cif.
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4512813