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_4503780
_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_formula_moiety         'C9 H9 Br O3'
_chemical_formula_sum            'C9 H9 Br O3'
_chemical_formula_weight         245.07
_chemical_name_systematic
; 
( rac) 2-(3-bromophenoxy)propionic acid (polymorph II)
;
_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
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 91.773(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.5305(5)
_cell_length_b                   4.7954(3)
_cell_length_c                   29.301(2)
_cell_measurement_reflns_used    5643
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      67.144
_cell_measurement_theta_min      3.002
_cell_volume                     917.16(11)
_computing_cell_refinement       SMART
_computing_data_collection       'SMART (Bruker, 2001)'
_computing_data_reduction
;
SAINT (Bruker, 2002) and XPREP (Bruker, 2001)
;
_computing_molecular_graphics    'XSEED (Barbour, 2001)'
_computing_publication_material  'XSEED (Barbour, 2001)'
_computing_structure_refinement  'SHELXTL (Bruker, 2000)'
_computing_structure_solution    'SHELXTL (Bruker, 2000)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device_type  'Bruker-AXS Kappa APEX II CCD'
_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  0.0259
_diffrn_reflns_av_sigmaI/netI    0.0251
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       4
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       34
_diffrn_reflns_limit_l_min       -34
_diffrn_reflns_number            6178
_diffrn_reflns_theta_full        25.30
_diffrn_reflns_theta_max         25.30
_diffrn_reflns_theta_min         1.39
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count variable
_exptl_absorpt_coefficient_mu    4.451
_exptl_absorpt_correction_T_max  0.8780
_exptl_absorpt_correction_T_min  0.3584
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS v2.05'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.775
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'transparent plate'
_exptl_crystal_F_000             488
_exptl_crystal_size_max          0.29
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.639
_refine_diff_density_min         -0.515
_refine_diff_density_rms         0.102
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.069
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     123
_refine_ls_number_reflns         1643
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.069
_refine_ls_R_factor_all          0.0257
_refine_ls_R_factor_gt           0.0253
_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^)+(0.0413P)^2^+0.8208P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0661
_refine_ls_wR_factor_ref         0.0665
_reflns_number_gt                1612
_reflns_number_total             1643
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg800449r_si_001.cif
_cod_data_source_block           c:(rac)-3-II
_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      'P 21/n'
_cod_database_code               4503780