Structural Studies of Enantiomers, Racemates, and Quasiracemates. 2-(2,4,5-Trichloroanilino)propanoic Acid and 2-(2,4,5-Trichlorophenoxy)propanoic Acid
Fomulu, Shella L.; Hendi, Mukta S.; Davis, Raymond E.; Wheeler, Kraig A.; Crystal Growth & Design 2 (2002) 637–; doi:10.1021/cg0255570

data_4505834
_publ_section_title
;
 Structural Studies of Enantiomers, Racemates, and Quasiracemates.
 2-(2,4,5-Trichloroanilino)propanoic Acid and
 2-(2,4,5-Trichlorophenoxy)propanoic Acid
;
_journal_issue                   6
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              637
_journal_paper_doi               10.1021/cg0255570
_journal_volume                  2
_journal_year                    2002
_chemical_formula_sum            'C18 H15 Cl6 N O5'
_chemical_formula_weight         538.01
_chemical_name_systematic
; 
(S)-2-(2,4,5-Trichloroanilino)propionic Acid, (R)-2-(2,4,5-Trichlorophenoxy)propionic Acid 
;
_space_group_IT_number           1
_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                98.547(15)
_cell_angle_beta                 104.75(2)
_cell_angle_gamma                101.442(16)
_cell_formula_units_Z            1
_cell_length_a                   7.246(2)
_cell_length_b                   7.277(2)
_cell_length_c                   10.920(3)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      26.745
_cell_measurement_theta_min      20.417
_cell_volume                     533.6(3)
_computing_cell_refinement       'Bruker XSCANS'
_computing_data_collection       'Bruker XSCANS'
_computing_data_reduction        'Bruker XSCANS'
_computing_molecular_graphics    X-SEED
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'siemens P4'
_diffrn_measurement_method       '2\q/\q 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  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0368
_diffrn_reflns_limit_h_max       1
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            3022
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.92
_diffrn_standards_interval_count 97
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.837
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.674
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'transparent block'
_exptl_crystal_F_000             272
_exptl_crystal_size_max          0.56
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.247
_refine_diff_density_min         -0.237
_refine_diff_density_rms         0.052
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.1(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     276
_refine_ls_number_reflns         3022
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.029
_refine_ls_R_factor_all          0.0637
_refine_ls_R_factor_gt           0.0386
_refine_ls_shift/su_max          0.061
_refine_ls_shift/su_mean         0.012
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0409P)^2^+0.0919P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0842
_refine_ls_wR_factor_ref         0.0956
_reflns_number_gt                2215
_reflns_number_total             3022
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg0255570-2_s1.cif
_cod_data_source_block           gg98
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P1
_cod_database_code               4505834