Cadmium(ii) coordination polymers with flexible tetradentate ligand 1,2,4,5-tetrakis(imidazol-1-ylmethyl)benzene: anion effect and reversible anion exchange property
Xu, Guan-Cheng; Hua, Qin; Okamura, Taka-aki; Bai, Zheng-Shuai; Ding, Yu-Jie; Huang, Yong-Qing; Liu, Guang-Xiang; Sun, Wei-Yin; Ueyama, Norikazu; CrystEngComm 11 (2009) 261–; doi:10.1039/b813220h

data_7200326
_publ_section_title
;
 Cadmium(ii) coordination polymers with flexible tetradentate ligand
 1,2,4,5-tetrakis(imidazol-1-ylmethyl)benzene: anion effect and
 reversible anion exchange property
;
_journal_issue                   2
_journal_name_full               CrystEngComm
_journal_page_first              261
_journal_paper_doi               10.1039/b813220h
_journal_volume                  11
_journal_year                    2009
_chemical_formula_moiety         'C66 H70 Cd2 Cl4 N24 O18 '
_chemical_formula_sum            'C66 H70 Cd2 Cl4 N24 O18'
_chemical_formula_weight         1854.06
_chemical_name_common            (Cd2(L)3)(ClO4)4-2(H2O)
_chemical_name_systematic
;
[Cd2(L)3](ClO4)4-2(H2O)
;
_space_group_IT_number           148
_symmetry_cell_setting           trigonal
_symmetry_Int_Tables_number      148
_symmetry_space_group_name_Hall  '-R 3'
_symmetry_space_group_name_H-M   'R -3 :H'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             'Sun Jul 1 15:34:41 2007'
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            3
_cell_length_a                   21.297(6)
_cell_length_b                   21.297(6)
_cell_length_c                   15.380(4)
_cell_measurement_reflns_used    10219
_cell_measurement_temperature    200
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      3.2
_cell_volume                     6041(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      200
_diffrn_detector_area_resol_mean 10.00
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Rigaku RAXIS-RAPID Imaging Plate'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0768
_diffrn_reflns_av_sigmaI/netI    0.0445
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            19292
_diffrn_reflns_theta_full        27.47
_diffrn_reflns_theta_max         27.47
_diffrn_reflns_theta_min         3.21
_exptl_absorpt_coefficient_mu    0.741
_exptl_absorpt_correction_T_max  0.928
_exptl_absorpt_correction_T_min  0.831
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(Higashi, 1995)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.529
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2826
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.200
_exptl_crystal_size_min          0.100
_refine_diff_density_max         0.735
_refine_diff_density_min         -0.736
_refine_diff_density_rms         0.097
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.073
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     203
_refine_ls_number_reflns         3071
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.073
_refine_ls_R_factor_all          0.0781
_refine_ls_R_factor_gt           0.0589
_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^)+(0.0377P)^2^+53.1093P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1175
_refine_ls_wR_factor_ref         0.1249
_reflns_number_gt                2429
_reflns_number_total             3071
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b813220h.txt
_cod_data_source_block           2
_cod_original_sg_symbol_H-M      'R -3'
_cod_database_code               7200326