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_7150486
_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         'C16H14N4, C4H2O4'
_chemical_formula_sum            'C20 H16 N4 O4'
_chemical_formula_weight         376.37
_chemical_melting_point          287.5(5)
_chemical_name_systematic
; 
N,N'-bis(2-pyridyl)-1,3-diaminobenzene squaric 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                   7.251(4)
_cell_length_b                   24.325(5)
_cell_length_c                   9.185(3)
_cell_measurement_reflns_used    'not relevant with the CCD data'
_cell_measurement_temperature    100(2)
_cell_volume                     1620.1(11)
_computing_cell_refinement       'KM4RED, Version 1.163, 2000'
_computing_data_collection       'KM4CCD, Version 1.163, 2000'
_computing_data_reduction        'KM4RED, Version 1.163, 2000'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Kuma KM4CCD diffractometer'
_diffrn_measurement_method       '\o scan'
_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  0.1576
_diffrn_reflns_av_sigmaI/netI    0.1029
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       27
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            7085
_diffrn_reflns_theta_full        23.81
_diffrn_reflns_theta_max         23.81
_diffrn_reflns_theta_min         3.58
_diffrn_standards_decay_%        <2
_diffrn_standards_interval_count 50
_exptl_absorpt_coefficient_mu    0.111
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.543
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             784
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.01
_refine_diff_density_max         0.281
_refine_diff_density_min         -0.383
_refine_diff_density_rms         0.082
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.132
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     142
_refine_ls_number_reflns         1281
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.132
_refine_ls_R_factor_all          0.1333
_refine_ls_R_factor_gt           0.0838
_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^)+(0.0815P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1717
_refine_ls_wR_factor_ref         0.2047
_reflns_number_gt                893
_reflns_number_total             1281
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b211675h.txt
_cod_data_source_block           1sq
_cod_depositor_comments
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The following automatic conversions were performed:

'_chemical_melting_point' value '287-288' was changed to '287.5(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_sg_symbol_H-M      Pnma
_cod_database_code               7150486