(<i>E</i>)-<i>o</i>-Stilbenecarboxylic Acid and its <i>p</i>-Methyl, Chloro and Methoxy Derivatives
Hamazaki, Hiroshi; Ohba, Shigeru; Toda, Fumio; Takumi, Hideaki; Acta Crystallographica Section C 53 (1997) 620–624; doi:10.1107/S0108270196015673

data_2006139
_publ_section_title
;
 (<i>E</i>)-<i>o</i>-Stilbenecarboxylic Acid and its <i>p</i>-Methyl,
 Chloro and Methoxy Derivatives
;
_journal_issue                   5
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              620
_journal_page_last               624
_journal_paper_doi               10.1107/S0108270196015673
_journal_volume                  53
_journal_year                    1997
_chemical_formula_moiety         'C16 H14 O2'
_chemical_formula_structural     C6H4(COOH)(C2H2C6H4(CH3))
_chemical_formula_sum            'C16 H14 O2'
_chemical_formula_weight         238.29
_chemical_melting_point          428.8(8)
_chemical_name_systematic        'p-methyl-(E)-o-stilbenecarboxylic acid'
_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_type_scat_source           IntTabIV
_cell_angle_alpha                90
_cell_angle_beta                 91.74(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.138(2)
_cell_length_b                   12.036(2)
_cell_length_c                   14.874(2)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    300
_cell_measurement_theta_max      15.0
_cell_measurement_theta_min      14.8
_cell_volume                     1277.3(5)
_computing_cell_refinement       'AFC/MSC Diffractometer Control System'
_computing_data_collection
'AFC/MSC Diffractometer Control System (Rigaku Corporation, 1993)'
_computing_data_reduction        'local programs'
_computing_molecular_graphics    CRYSTAN-GM
_computing_publication_material  CRYSTAN-GM
_computing_structure_refinement  CRYSTAN-GM
_computing_structure_solution
'CRYSTAN-GM (Edwards, Gilmore, Mackay & Stewart, 1995)'
_diffrn_ambient_temperature      300
_diffrn_measurement_device       'Rigaku AFC-5'
_diffrn_measurement_method       \q-2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         xray_tube
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.016
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            2449
_diffrn_reflns_theta_max         25
_diffrn_reflns_theta_min         2.0
_diffrn_standards_decay_%        5.2
_diffrn_standards_interval_count 100
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.081
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.239
_exptl_crystal_description       plate-like
_exptl_crystal_F_000             504
_exptl_crystal_size_max          0.6
_exptl_crystal_size_mid          0.6
_exptl_crystal_size_min          0.5
_refine_diff_density_max         0.12
_refine_diff_density_min         -0.25
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_obs   1.20
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     216
_refine_ls_number_reflns         1796
_refine_ls_R_factor_obs          .0456
_refine_ls_shift/esd_max         0.06
_refine_ls_shift/esd_mean        0.0027
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details     'w = 1/[\s^2^(F) + 0.000225F^2^]'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_obs         .0510
_reflns_number_observed          1796
_reflns_number_total             2256
_reflns_observed_criterion       '|F~o~| > 3\s(|F~o~|)'
_cod_data_source_file            oa1018.cif
_cod_data_source_block           stib
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '428-429.5' was changed to '428.8(8)'
- the average value was taken and precision was
estimated.

'_atom_site_thermal_displace_type' tag value 'Uij' was
replaced with 'Uani' value 18 times.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 

The following automatic conversions were performed:

'_chemical_melting_point' value '428-429.5' was changed to '428.8(8)'
- the average value was taken and precision was estimated.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'w = 1/[\s^2^(F) + 0.000225F^2^]'
was changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to 'w = 1/[\s^2^(F) +
0.000225F^2^]'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2006139