Metal‒organic frameworks based on the pyridine-2,3-dicarboxylate and a flexible bispyridyl ligand: syntheses, structures, and photoluminescence
Wang, Guan-Hua; Li, Zhi-Gang; Jia, Heng-Qing; Hu, Ning-Hai; Xu, Jing-Wei; CrystEngComm 11 (2009) 292–; doi:10.1039/b809557d

data_7200191
_publ_section_title
;
 Metal--organic frameworks based on the pyridine-2,3-dicarboxylate and
 a flexible bispyridyl ligand: syntheses, structures, and
 photoluminescence
;
_journal_issue                   2
_journal_name_full               CrystEngComm
_journal_page_first              292
_journal_paper_doi               10.1039/b809557d
_journal_volume                  11
_journal_year                    2009
_chemical_formula_sum            'C20 H22 N3 O6.5 Zn'
_chemical_formula_weight         473.78
_chemical_name_systematic
;
?
;
_space_group_IT_number           96
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'P 4nw 2abw'
_symmetry_space_group_name_H-M   'P 43 21 2'
_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            8
_cell_length_a                   12.5412(9)
_cell_length_b                   12.5412(9)
_cell_length_c                   27.227(4)
_cell_measurement_reflns_used    2520
_cell_measurement_temperature    185(2)
_cell_measurement_theta_max      21.44
_cell_measurement_theta_min      2.21
_cell_volume                     4282.3(8)
_computing_cell_refinement       'SAINT (Bruker, 2007)'
_computing_data_collection       'SMART (Bruker, 2007)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      185(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker SMART APEX CCD area-detector'
_diffrn_measurement_method       '\f and \w 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  0.0930
_diffrn_reflns_av_sigmaI/netI    0.0691
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            22153
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         1.79
_exptl_absorpt_coefficient_mu    1.191
_exptl_absorpt_correction_T_max  0.918
_exptl_absorpt_correction_T_min  0.851
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.470
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1960
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.07
_refine_diff_density_max         1.032
_refine_diff_density_min         -0.351
_refine_diff_density_rms         0.106
_refine_ls_abs_structure_details 'Flack (1983); 1541 Friedel pairs'
_refine_ls_abs_structure_Flack   0.33(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.013
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     290
_refine_ls_number_reflns         3785
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.013
_refine_ls_R_factor_all          0.0992
_refine_ls_R_factor_gt           0.0674
_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^)+(0.1240P)^2^+1.0847P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1739
_refine_ls_wR_factor_ref         0.1918
_reflns_number_gt                2763
_reflns_number_total             3785
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            b809557d.txt
_cod_data_source_block           w079b
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
according to '/home/saulius/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 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_cell_volume        4282.2(8)
_cod_original_formula_sum        'C20 H22 N3 O6.50 Zn'
_cod_database_code               7200191