Pleconaril Polymorphs: Crystal Structures of Form I and Form III, Evidence of the Enantiotropy, and Assessment of the Structural Purity
Coste, Servane; Schneider, Jean-Marie; Petit, Marie-Noëlle; Coquerel, Gérard; Crystal Growth & Design 4 (2004) 1237–; doi:10.1021/cg049766r

data_4505373
_publ_section_title
;
 Pleconaril Polymorphs:&#x2009; Crystal Structures of Form I and Form III,
 Evidence of the Enantiotropy, and Assessment of the Structural Purity
;
_journal_issue                   6
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              1237
_journal_paper_doi               10.1021/cg049766r
_journal_volume                  4
_journal_year                    2004
_chemical_formula_moiety         'C18 H18 F3 N3 O3'
_chemical_formula_sum            'C18 H18 F3 N3 O3'
_chemical_formula_weight         381.35
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 102.9693(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.4044(5)
_cell_length_b                   21.0539(11)
_cell_length_c                   9.9067(5)
_cell_measurement_temperature    296(2)
_cell_volume                     1911.48(17)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_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  0.0246
_diffrn_reflns_av_sigmaI/netI    0.0235
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            15173
_diffrn_reflns_theta_full        26.45
_diffrn_reflns_theta_max         26.45
_diffrn_reflns_theta_min         1.93
_exptl_absorpt_coefficient_mu    0.111
_exptl_absorpt_correction_T_max  1.000000
_exptl_absorpt_correction_T_min  0.662671
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.325
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rod
_exptl_crystal_F_000             792
_exptl_crystal_size_max          1
_exptl_crystal_size_mid          0.4
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.522
_refine_diff_density_min         -0.369
_refine_diff_density_rms         0.042
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.113
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     283
_refine_ls_number_reflns         3906
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.113
_refine_ls_R_factor_all          0.0875
_refine_ls_R_factor_gt           0.0651
_refine_ls_shift/su_max          0.116
_refine_ls_shift/su_mean         0.010
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1098P)^2^+0.2702P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1976
_refine_ls_wR_factor_ref         0.2138
_reflns_number_gt                2599
_reflns_number_total             3906
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg049766rsi20040710_120007.cif
_cod_data_source_block           pleconaril_form_III_296K
_cod_original_sg_symbol_H-M      P21/C
_cod_database_code               4505373