Zn(ii) and Cd(ii) coordination polymers assembled by di(1H-imidazol-1-yl)methane and carboxylic acid ligands.
Zhang, Xiao-Feng; Song, Wei-Chao; Yang, Qian; Bu, Xian-He; Dalton transactions (Cambridge, England : 2003) 41 (2012) 4217–4223; doi:10.1039/c2dt11990k

data_7018447
_publ_section_title
;
 Zn(ii) and Cd(ii) coordination polymers assembled by
 di(1H-imidazol-1-yl)methane and carboxylic acid ligands.
;
_journal_issue                   14
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              4217
_journal_page_last               4223
_journal_paper_doi               10.1039/c2dt11990k
_journal_volume                  41
_journal_year                    2012
_chemical_formula_sum            'C21 H18 N4 O6 Zn'
_chemical_formula_weight         487.76
_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                90.00
_cell_angle_beta                 92.25(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.8150(18)
_cell_length_b                   14.859(3)
_cell_length_c                   15.580(3)
_cell_measurement_reflns_used    15618
_cell_measurement_temperature    293.1
_cell_measurement_theta_max      27.6
_cell_measurement_theta_min      3.0
_cell_volume                     2039.1(7)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  SCX-MINI
_diffrn_measurement_method       multi-scan
_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  0.1205
_diffrn_reflns_av_sigmaI/netI    0.0903
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            17326
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         3.03
_exptl_absorpt_coefficient_mu    1.253
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.589
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1000
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.747
_refine_diff_density_min         -1.086
_refine_diff_density_rms         0.102
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.178
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     289
_refine_ls_number_reflns         3597
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.178
_refine_ls_R_factor_all          0.1426
_refine_ls_R_factor_gt           0.0940
_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^)+(0.0124P)^2^+15.4749P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1622
_refine_ls_wR_factor_ref         0.1786
_reflns_number_gt                2439
_reflns_number_total             3597
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2dt11990k.txt
_cod_data_source_block           2
_cod_original_cell_volume        2039.0(7)
_cod_original_sg_symbol_H-M      P21/n
_cod_database_code               7018447