Polymorphic Ammonium Salts of the Antibiotic 4-Aminosalicylic Acid
André, Vânia; Duarte, M. Teresa; Braga, Dario; Grepioni, Fabrizia; Crystal Growth & Design 12 (2012) 3082–; doi:10.1021/cg300284z

data_4506224
_publ_section_title
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 Polymorphic Ammonium Salts of the Antibiotic 4-Aminosalicylic Acid
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_journal_issue                   6
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              3082
_journal_paper_doi               10.1021/cg300284z
_journal_volume                  12
_journal_year                    2012
_chemical_formula_moiety         C7H6N1O3N1H4
_chemical_formula_sum            'C7 H10 N2 O3'
_chemical_formula_weight         170.17
_chemical_name_common            4ASA_NH4_III
_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                 94.972(13)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.736(3)
_cell_length_b                   3.7600(10)
_cell_length_c                   29.484(8)
_cell_measurement_reflns_used    1636
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.34
_cell_measurement_theta_min      4.01
_cell_volume                     964.8(5)
_computing_cell_refinement       'BRUKER SMART (Bruker, 2005)'
_computing_data_collection       'BRUKER APEX2 (Bruker, 2005)'
_computing_data_reduction        'BRUKER SAINT (Bruker, 2005)'
_computing_molecular_graphics    'ORTEP 3.2 (Farrugia, 1997) and Mercury 2.3'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SIR 97 (Altomare et al, 1999)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.923
_diffrn_measured_fraction_theta_max 0.923
_diffrn_measurement_device_type  'Bruker APEX-II CCD area detector'
_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  0.1568
_diffrn_reflns_av_sigmaI/netI    0.1568
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       4
_diffrn_reflns_limit_k_min       -4
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            7094
_diffrn_reflns_theta_full        25.34
_diffrn_reflns_theta_max         25.34
_diffrn_reflns_theta_min         4.01
_exptl_absorpt_coefficient_mu    0.093
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.172
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             360
_exptl_crystal_size_max          0.10
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.862
_refine_diff_density_min         -0.476
_refine_diff_density_rms         0.116
_refine_ls_extinction_coef       0.09(4)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.202
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     127
_refine_ls_number_reflns         1636
_refine_ls_number_restraints     7
_refine_ls_restrained_S_all      1.199
_refine_ls_R_factor_all          0.3533
_refine_ls_R_factor_gt           0.1805
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.2000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.4067
_refine_ls_wR_factor_ref         0.4694
_reflns_number_gt                511
_reflns_number_total             1636
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            cg300284z_si_003.cif
_cod_data_source_block           ASANH4III
_cod_depositor_comments
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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 1891 2012-01-12 08:04:46Z andrius 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' 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 
;
_cod_original_sg_symbol_H-M      P21/n
_cod_database_code               4506224