Secondary ligand-directed assembly of metal‒organic coordination polymers based on a 2-(pyridin-4-yl)-1H-imidazole-4,5-dicarboxylic acid ligand: Syntheses, structures and photoluminescent properties
Yuan, Gang; Shao, Kui-Zhan; Du, Dong-Ying; Wang, Xin-Long; Su, Zhong-Min; Ma, Jian-Fang; CrystEngComm 14 (2012) 1865–; doi:10.1039/c1ce06178j

data_7207357
_publ_section_title
;
 Secondary ligand-directed assembly of metal--organic coordination
 polymers based on a 2-(pyridin-4-yl)-1H-imidazole-4,5-dicarboxylic acid
 ligand: Syntheses, structures and photoluminescent properties
;
_journal_issue                   5
_journal_name_full               CrystEngComm
_journal_page_first              1865
_journal_paper_doi               10.1039/c1ce06178j
_journal_volume                  14
_journal_year                    2012
_chemical_formula_moiety         'C12 H11 Cd2 N3 O8'
_chemical_formula_sum            'C12 H11 Cd2 N3 O8'
_chemical_formula_weight         550.04
_chemical_name_systematic
;
?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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
_cell_angle_beta                 102.243(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   13.562(6)
_cell_length_b                   6.941(2)
_cell_length_c                   16.190(1)
_cell_measurement_reflns_used    1250
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      24.85
_cell_measurement_theta_min      3.52
_cell_volume                     1489.4(8)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SMART'
_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      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0393
_diffrn_reflns_av_sigmaI/netI    0.0459
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            7183
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.78
_exptl_absorpt_coefficient_mu    2.907
_exptl_absorpt_correction_T_max  0.546
_exptl_absorpt_correction_T_min  0.475
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            light-yellow
_exptl_crystal_density_diffrn    2.453
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1056
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.442
_refine_diff_density_min         -0.745
_refine_diff_density_rms         0.129
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.936
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     243
_refine_ls_number_reflns         2618
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      0.935
_refine_ls_R_factor_all          0.0421
_refine_ls_R_factor_gt           0.0291
_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^)+(0.0320P)^2^+0.9638P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0618
_refine_ls_wR_factor_ref         0.0660
_reflns_number_gt                2119
_reflns_number_total             2618
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c1ce06178j.txt
_cod_data_source_block           4
_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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        1489.4(13)
_cod_original_sg_symbol_H-M      'P2(1)/n '
_cod_database_code               7207357