Heteromeric intermolecular interactions as synthetic tools for the formation of binary co-crystals
Christer B. Aakeröy; John Desper; Brian A. Helfrich; CrystEngComm 6 (2004) 19–24; doi:10.1039/b315181f

data_7204799
_publ_section_title
;
 Heteromeric intermolecular interactions as synthetic tools for the
 formation of binary co-crystals
;
_journal_issue                   5
_journal_name_full               CrystEngComm
_journal_page_first              19
_journal_page_last               24
_journal_paper_doi               10.1039/b315181f
_journal_volume                  6
_journal_year                    2004
_chemical_formula_moiety
;
(C7 H5 N O4) (C9 H11 N O2)
;
_chemical_formula_sum            'C16 H16 N2 O6'
_chemical_formula_weight         332.31
_chemical_melting_point          164.0(10)
_chemical_name_common
'4-nitrobenzoic acid, 3-(dimethylamino)benzoic acid'
_chemical_name_systematic
;
4-nitrobenzoic acid, 3-(dimethylamino)benzoic acid
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                91.111(3)
_cell_angle_beta                 91.483(4)
_cell_angle_gamma                111.582(3)
_cell_formula_units_Z            2
_cell_length_a                   7.1538(13)
_cell_length_b                   7.9978(15)
_cell_length_c                   14.315(3)
_cell_measurement_reflns_used    966
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      26.35
_cell_measurement_theta_min      3.00
_cell_volume                     761.0(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      153(2)
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  '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  0.0151
_diffrn_reflns_av_sigmaI/netI    0.0448
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            4919
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         1.42
_exptl_absorpt_coefficient_mu    0.113
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            orange-red
_exptl_crystal_density_diffrn    1.450
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             348
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.212
_refine_diff_density_min         -0.206
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.859
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     223
_refine_ls_number_reflns         3060
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.859
_refine_ls_R_factor_all          0.0808
_refine_ls_R_factor_gt           0.0412
_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^)+(0.0600P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0999
_refine_ls_wR_factor_ref         0.1150
_reflns_number_gt                1669
_reflns_number_total             3060
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b315181f.txt
_cod_data_source_block           5
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to '/home/adriana/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 1555 2011-01-17 13:19:09Z saulius 

The following automatic conversions were performed:

'_chemical_melting_point' value '163-165' was changed to '164.0(10)'
- the average value was taken and precision was estimated.

Automatic conversion script
Id: cif_fix_values 1569 2011-02-09 13:29:24Z adriana 
;
_cod_original_cell_volume        761.0(2)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7204799