Self-assembly of d‒f coordination frameworks based on 1H-benzimidazole-5-carboxylic acid: synthesis, structure and luminescence
Ma, Li; Qiu, Yong-Cai; Peng, Guo; Cai, Jin-Biao; Deng, Hong; Zeller, Matthias; CrystEngComm 13 (2011) 3852–; doi:10.1039/c0ce00923g

data_7205871
_publ_section_title
;
 Self-assembly of d--f coordination frameworks based on
 1H-benzimidazole-5-carboxylic acid: synthesis, structure and
 luminescence
;
_journal_issue                   11
_journal_name_full               CrystEngComm
_journal_page_first              3852
_journal_paper_doi               10.1039/c0ce00923g
_journal_volume                  13
_journal_year                    2011
_chemical_formula_moiety         'C32 H20 Br Cu2 Er N8 O8'
_chemical_formula_sum            'C32 H20 Br Cu2 Er N8 O8'
_chemical_formula_weight         1018.81
_chemical_name_systematic
;
?
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 101.289(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   15.993(2)
_cell_length_b                   5.3401(7)
_cell_length_c                   18.709(2)
_cell_measurement_reflns_used    4826
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      25.19
_cell_measurement_theta_min      1.87
_cell_volume                     1566.9(3)
_computing_cell_refinement       'Apex2 (Bruker, 2005)'
_computing_data_collection       'Apex2 (Bruker, 2005)'
_computing_data_reduction        'Apex2 (Bruker, 2005)'
_computing_molecular_graphics    'SHELXTL 6.12'
_computing_publication_material  'SHELXTL 6.12'
_computing_structure_refinement  'SHELXTL 6.12'
_computing_structure_solution    'SHELXTL 6.12 (Bruker, 2000-2003)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker AXS SMART APEX CCD diffractometer'
_diffrn_measurement_method       '\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  0.0230
_diffrn_reflns_av_sigmaI/netI    0.0540
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            7042
_diffrn_reflns_theta_full        25.19
_diffrn_reflns_theta_max         25.19
_diffrn_reflns_theta_min         1.87
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    5.343
_exptl_absorpt_correction_T_max  0.448
_exptl_absorpt_correction_T_min  0.397
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Apex2 (Bruker, 2005)'
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    2.159
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             986
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.15
_refine_diff_density_max         1.136
_refine_diff_density_min         -0.628
_refine_diff_density_rms         0.100
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.013(12)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.991
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     469
_refine_ls_number_reflns         4826
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.991
_refine_ls_R_factor_all          0.0342
_refine_ls_R_factor_gt           0.0295
_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^)+(0.0231P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0634
_refine_ls_wR_factor_ref         0.0655
_reflns_number_gt                4393
_reflns_number_total             4826
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0ce00923g.txt
_cod_data_source_block           2
_cod_original_sg_symbol_Hall     P2yb
_cod_original_sg_symbol_H-M      P21
_cod_database_code               7205871