Structural Studies of Enantiomers, Racemates, and Quasiracemates. 2-(3-Bromophenoxy)propionic Acid and 2-(3-Methoxyphenoxy)propionic Acid
Breen, Meghan E.; Tameze, Shella L.; Dougherty, William G.; Kassel, W. Scott; Wheeler, Kraig A.; Crystal Growth & Design 8 (2008) 3863–; doi:10.1021/cg800449r

data_4503778
_publ_section_title
;
 Structural Studies of Enantiomers, Racemates, and Quasiracemates.
 2-(3-Bromophenoxy)propionic Acid and 2-(3-Methoxyphenoxy)propionic Acid
;
_journal_issue                   10
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              3863
_journal_paper_doi               10.1021/cg800449r
_journal_volume                  8
_journal_year                    2008
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C10 H12 O4, C9 H9 Br O3'
_chemical_formula_sum            'C19 H21 Br O7'
_chemical_formula_weight         441.27
_chemical_name_systematic
; 
  (R)-2-(3-methoxyphenoxy)propanoic acid/ (S)-2-(3-bromophenoxy)propanoic acid
;
_space_group_IT_number           5
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C 2y'
_symmetry_space_group_name_H-M   'C 1 2 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                 90.605(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   33.191(3)
_cell_length_b                   5.0850(5)
_cell_length_c                   11.303(1)
_cell_measurement_reflns_used    66
_cell_measurement_temperature    213(2)
_cell_measurement_theta_max      25.164
_cell_measurement_theta_min      20.473
_cell_volume                     1907.6(3)
_computing_cell_refinement       XSCANS
_computing_data_collection       'XSCANS (Bruker, 1999)'
_computing_data_reduction        'XPREP (Bruker, 2001)'
_computing_molecular_graphics    'X-SEED (Barbour, 2001)'
_computing_publication_material  X-SEED
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      213(2)
_diffrn_measured_fraction_theta_full 0.770
_diffrn_measured_fraction_theta_max 0.770
_diffrn_measurement_device_type  'Bruker P4'
_diffrn_measurement_method       '\q/2\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  0.0494
_diffrn_reflns_av_sigmaI/netI    0.0444
_diffrn_reflns_limit_h_max       42
_diffrn_reflns_limit_h_min       -1
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -1
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            2442
_diffrn_reflns_theta_full        27.51
_diffrn_reflns_theta_max         27.51
_diffrn_reflns_theta_min         2.17
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 97
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    2.193
_exptl_absorpt_correction_T_max  0.8797
_exptl_absorpt_correction_T_min  0.2323
_exptl_absorpt_correction_type   analytical
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.536
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'transparent plates'
_exptl_crystal_F_000             904
_exptl_crystal_size_max          0.84
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.555
_refine_diff_density_min         -0.345
_refine_diff_density_rms         0.068
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.0(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.082
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     247
_refine_ls_number_reflns         1882
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.081
_refine_ls_R_factor_all          0.0476
_refine_ls_R_factor_gt           0.0365
_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^)+(0.0438P)^2^+2.1521P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0842
_refine_ls_wR_factor_ref         0.0889
_reflns_number_gt                1619
_reflns_number_total             1882
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg800449r_si_001.cif
_cod_data_source_block           c:2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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      'C 2'
_cod_database_code               4503778