Creation of hydrogen bonded 1D networks by co-crystallization of N,N'-bis(2-pyridyl)aryldiamines with dicarboxylic acidsSupramolecular structures formed by 2-aminopyridine derivatives. Part II.5
Bensemann, Igor; Gdaniec, Maria; Łakomecka, Karina; Milewska, Maria J.; Połoński, Tadeusz; Organic & Biomolecular Chemistry 1 (2003) 1425–; doi:10.1039/b211675h

data_7150484
_publ_section_title
;
 Creation of hydrogen bonded 1D networks by co-crystallization of
 N,N'-bis(2-pyridyl)aryldiamines with dicarboxylic acidsSupramolecular
 structures formed by 2-aminopyridine derivatives. Part II.5
;
_journal_issue                   8
_journal_name_full               'Organic &amp;  Biomolecular Chemistry'
_journal_page_first              1425
_journal_paper_doi               10.1039/b211675h
_journal_volume                  1
_journal_year                    2003
_chemical_formula_moiety         'C16 H14 N4, C2H2O4'
_chemical_formula_sum            'C18 H16 N4 O4'
_chemical_formula_weight         352.35
_chemical_melting_point          198.5(5)
_chemical_name_systematic
; 
N,N'-bis(2-pyridyl)-1,3-diaminobenzene oxalic acid 
;
_space_group_IT_number           62
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.281(3)
_cell_length_b                   24.097(6)
_cell_length_c                   8.919(3)
_cell_measurement_reflns_used    33
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      30
_cell_measurement_theta_min      8
_cell_volume                     1564.8(9)
_computing_cell_refinement       'Kuma KM-4 software (Kuma Diffraction, 1991)'
_computing_data_collection       'Kuma KM-4 sofware (Kuma Diffraction, 1991)'
_computing_data_reduction        'Kuma KM-4 software (Kuma Diffraction, 1991)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device       'KM-4 four-circle diffractometer'
_diffrn_measurement_method       '\w/2\q scan'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0267
_diffrn_reflns_av_sigmaI/netI    0.0498
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       0
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            2182
_diffrn_reflns_theta_full        62.58
_diffrn_reflns_theta_max         62.58
_diffrn_reflns_theta_min         3.67
_diffrn_standards_decay_%        <1.5
_diffrn_standards_interval_count 100
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.904
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.496
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             736
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.01
_refine_diff_density_max         0.168
_refine_diff_density_min         -0.205
_refine_diff_density_rms         0.045
_refine_ls_extinction_coef       0.0029(3)
_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   0.988
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     134
_refine_ls_number_reflns         1274
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.988
_refine_ls_R_factor_all          0.0853
_refine_ls_R_factor_gt           0.0352
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0482P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0785
_refine_ls_wR_factor_ref         0.0853
_reflns_number_gt                838
_reflns_number_total             1274
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b211675h.txt
_cod_data_source_block           1oxa
_cod_depositor_comments
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The following automatic conversions were performed:

'_chemical_melting_point' value '198-199' was changed to '198.5(5)' -
the average value was taken and precision was estimated.

Automatic conversion script
Id: cif_fix_values 1569 2011-02-09 13:29:24Z adriana 

The following automatic conversions were performed:

'_atom_sites_solution_hydrogens' value 'difmap and geom' was changed
to 'mixed'.

Automatic conversion script
Id: cif_fix_values 6452 2018-10-05 10:23:21Z andrius 
;
_cod_original_cell_volume        1564.8(5)
_cod_original_sg_symbol_H-M      Pnma
_cod_database_code               7150484