Poppy Acid: Synthesis and Crystal Chemistry
Scott Lovell; Paramjeet Subramony; Bart Kahr; Journal of the American Chemical Society 121 (1999) 7020–7025; doi:10.1021/ja990402a

data_4116464
_publ_contact_author
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Bart Kahr
Departement of Chemistry
University of Washington
Box 351700
Seattle
WA 98195-1700
USA
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_publ_contact_author_email       kahr@gibbs.chem.washington.edu
_publ_contact_author_fax         '(206) 865-8665'
_publ_contact_author_phone       '(206) 616-8195'
_publ_section_title
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 Poppy Acid: Synthesis and Crystal Chemistry
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_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              7020
_journal_page_last               7025
_journal_paper_doi               10.1021/ja990402a
_journal_volume                  121
_journal_year                    1999
_chemical_formula_moiety         'C7 H4 O7 * 3H2O'
_chemical_formula_sum            'C7 H10 O10'
_chemical_formula_weight         254.15
_chemical_name_common            'meconic acid'
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   15.9821(4)
_cell_length_b                   6.3658(1)
_cell_length_c                   19.6955(5)
_cell_measurement_reflns_used    913
_cell_measurement_temperature    161(2)
_cell_volume                     2003.80(8)
_computing_cell_refinement       'HKL SCALEPACK'
_computing_data_collection       KappaCCD
_computing_data_reduction        DENZO
_computing_molecular_graphics    'maXus, Zortep'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    SIR-92
_diffrn_ambient_temperature      161(2)
_diffrn_measured_fraction_theta_full 0.723
_diffrn_measured_fraction_theta_max 0.723
_diffrn_measurement_device_type  'Enraf-Nonius KappaCCD'
_diffrn_measurement_method       '\f rotation'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71070
_diffrn_reflns_av_R_equivalents  0.035
_diffrn_reflns_av_sigmaI/netI    0.0220
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            27611
_diffrn_reflns_theta_full        28.25
_diffrn_reflns_theta_max         28.25
_diffrn_reflns_theta_min         3.28
_exptl_absorpt_coefficient_mu    0.164
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.685
_exptl_crystal_description       plate
_exptl_crystal_F_000             1056
_exptl_crystal_size_max          0.31
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.27
_refine_diff_density_max         0.574
_refine_diff_density_min         -0.676
_refine_diff_density_rms         0.102
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.169
_refine_ls_hydrogen_treatment    'H atoms riding'
_refine_ls_matrix_type           full
_refine_ls_number_parameters     154
_refine_ls_number_reflns         2057
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.169
_refine_ls_R_factor_all          0.0578
_refine_ls_R_factor_gt           0.0473
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0844P)^2^+1.7090P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1426
_refine_ls_wR_factor_ref         0.1579
_reflns_number_gt                1829
_reflns_number_total             2057
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja990402a_2.cif
_cod_data_source_block           shelxl
_cod_depositor_comments
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The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0844P)^2^+1.7090P] where P=(Fo^2^+2Fc^2^)/3' 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^(Fo^2^)+(0.0844P)^2^+1.7090P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
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_cod_database_code               4116464