Co-crystallization of oxadiazole-bridged pyridyl-N-oxide building modules with R-aromatics (R = –OH, –NH2 and –COOH)
Hou, Gui-Ge; Ma, Jian-Ping; Wang, Le; Wang, Ping; Dong, Yu-Bin; Huang, Ru-Qi; CrystEngComm 12 (2010) 4287–; doi:10.1039/b923810g

data_7212264
_publ_section_title
;
 Co-crystallization of oxadiazole-bridged pyridyl-N-oxide building modules
 with R-aromatics (R = --OH, --NH2 and --COOH)
;
_journal_issue                   12
_journal_name_full               CrystEngComm
_journal_page_first              4287
_journal_paper_doi               10.1039/b923810g
_journal_volume                  12
_journal_year                    2010
_chemical_formula_moiety         'C18 H14 N4 O5'
_chemical_formula_sum            'C18 H14 N4 O5'
_chemical_formula_weight         366.33
_space_group_IT_number           60
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2n 2ab'
_symmetry_space_group_name_H-M   'P b c n'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.991(2)
_cell_length_b                   22.751(5)
_cell_length_c                   7.1579(16)
_cell_measurement_reflns_used    2018
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      23.161
_cell_measurement_theta_min      3.363
_cell_volume                     1627.0(6)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_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      298(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0291
_diffrn_reflns_av_sigmaI/netI    0.0201
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            7819
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         1.79
_exptl_absorpt_coefficient_mu    0.112
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.496
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             760
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.27
_refine_diff_density_max         0.154
_refine_diff_density_min         -0.188
_refine_diff_density_rms         0.038
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.031
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     125
_refine_ls_number_reflns         1520
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.031
_refine_ls_R_factor_all          0.0577
_refine_ls_R_factor_gt           0.0427
_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^)+(0.0589P)^2^+0.4063P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1078
_refine_ls_wR_factor_ref         0.1168
_reflns_number_gt                1165
_reflns_number_total             1520
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b923810g.txt
_cod_data_source_block           1
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      Pbcn
_cod_database_code               7212264