1,4-Dimethoxy-2-naphthoic Acid
Blackburn, Anthony C.; Gerkin, Roger E.; Acta Crystallographica Section C 53 (1997) 1425–1427; doi:10.1107/S0108270197008299

data_2006554
_publ_section_title
;
 1,4-Dimethoxy-2-naphthoic Acid
;
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              1425
_journal_page_last               1427
_journal_paper_doi               10.1107/S0108270197008299
_journal_volume                  53
_journal_year                    1997
_chemical_formula_moiety         'C13 H12 O4 '
_chemical_formula_sum            'C13 H12 O4'
_chemical_formula_weight         232.24
_chemical_name_common            '1,4-dimethoxy-2-naphthoic acid'
_chemical_name_systematic        ' ?'
_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'
_cell_angle_alpha                90
_cell_angle_beta                 92.84(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   3.971(2)
_cell_length_b                   8.904(2)
_cell_length_c                   31.417(2)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    296
_cell_measurement_theta_max      14.6
_cell_measurement_theta_min      13.3
_cell_volume                     1109.5(6)
_computing_cell_refinement       'MSC/AFC Diffractometer Control Software'
_computing_data_collection
;MSC/AFC Diffractometer Control Software (Molecular Structure Corporation,
 1988)
;
_computing_data_reduction
'TEXSAN (Molecular Structure Corporation, 1989)'
_computing_molecular_graphics    'ORTEPII (Johnson, 1976)'
_computing_publication_material  TEXSAN
_computing_structure_refinement  TEXSAN
_computing_structure_solution    'SHELXS86 (Sheldrick, 1985)'
_diffrn_ambient_temperature      296
_diffrn_measurement_device_type  AFC5S
_diffrn_measurement_method       '\w scans '
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'X-ray tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.020
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       40
_diffrn_reflns_limit_l_min       -40
_diffrn_reflns_number            3118
_diffrn_reflns_theta_max         27.5
_diffrn_reflns_theta_min         2.0
_diffrn_standards_decay_%        '+-1.8% (ave. max. rel. intensity)'
_diffrn_standards_interval_count 150
_diffrn_standards_number         6
_exptl_absorpt_coefficient_mu    0.097
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.390
_exptl_crystal_density_meas      ?
_exptl_crystal_description       'cut column'
_exptl_crystal_F_000             488
_exptl_crystal_size_max          0.31
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.22
_refine_diff_density_min         -0.20
_refine_ls_extinction_coef       '12(4) \\times 10^-7^'
_refine_ls_extinction_method     'Zachariasen (1963,1968)'
_refine_ls_goodness_of_fit_ref   1.58
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     163
_refine_ls_number_reflns         1663
_refine_ls_R_factor_gt           0.059
_refine_ls_shift/su_max          '< 0.01'
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details     w=1/\s~F~^2^
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.053
_reflns_number_gt                1663
_reflns_number_total             2736
_reflns_threshold_expression     'I > 0.75\s~I~'
_cod_data_source_file            bk1333.cif
_cod_data_source_block           1
_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_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_atom_site_adp_type' tag value 'Uij' was replaced with 'Uani' value
17 times.

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

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 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'none' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'w=1/\s~F~^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~F~^2^'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2006554