Structural diversification and metal-directed assembly of coordination architectures based on tetrabromoterephthalic acid and a bent dipyridyl tecton 2,5-bis(4-pyridyl)-1,3,4-oxadiazole
Li, Cheng-Peng; Chen, Jing; Du, Miao; CrystEngComm 12 (2010) 4392–; doi:10.1039/c003738a

data_7212695
_publ_section_title
;
 Structural diversification and metal-directed assembly of coordination
 architectures based on tetrabromoterephthalic acid and a bent dipyridyl
 tecton 2,5-bis(4-pyridyl)-1,3,4-oxadiazole
;
_journal_issue                   12
_journal_name_full               CrystEngComm
_journal_page_first              4392
_journal_paper_doi               10.1039/c003738a
_journal_volume                  12
_journal_year                    2010
_chemical_formula_sum            'C20 H8 Br4 N4 O5 Pb'
_chemical_formula_weight         911.10
_chemical_name_systematic
;
?
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 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                 98.032(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.691(2)
_cell_length_b                   13.201(2)
_cell_length_c                   16.250(3)
_cell_measurement_reflns_used    3324
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      27.42
_cell_measurement_theta_min      2.34
_cell_volume                     2483.3(7)
_computing_cell_refinement       'Bruker APEX II'
_computing_data_collection       'Bruker APEX II'
_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      296(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  '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  0.0715
_diffrn_reflns_av_sigmaI/netI    0.0633
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            5985
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.34
_exptl_absorpt_coefficient_mu    13.269
_exptl_absorpt_correction_T_max  1.000000
_exptl_absorpt_correction_T_min  0.218238
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    2.437
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1672
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.20
_refine_diff_density_max         1.625
_refine_diff_density_min         -1.499
_refine_diff_density_rms         0.170
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.041
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     231
_refine_ls_number_reflns         2200
_refine_ls_number_restraints     25
_refine_ls_restrained_S_all      1.036
_refine_ls_R_factor_all          0.0483
_refine_ls_R_factor_gt           0.0385
_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^)+(0.0491P)^2^+13.4134P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0956
_refine_ls_wR_factor_ref         0.1016
_reflns_number_gt                1881
_reflns_number_total             2200
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c003738a.txt
_cod_data_source_block           8
_cod_depositor_comments
;
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 2.4.2 from
2011-04-26.

'_exptl_absorpt_correction_type' value 'MULTI-SCAN'
changed to 'multi-scan' 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 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'none' 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_cell_volume        2483.5(7)
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7212695