Ferroelectric metal‒organic coordination polymer with a high dielectric constant
Fu, Da-Wei; Ye, Heng-Yun; Ye, Qiong; Pan, Ke-Ji; Xiong, Ren-Gen; Dalton Transactions  (2008) 874–877; doi:10.1039/b714293e

data_7003209
_publ_section_title
;
 Ferroelectric metal--organic coordination polymer with a high
 dielectric constant
;
_journal_issue                   7
_journal_name_full               'Dalton Transactions'
_journal_page_first              874
_journal_page_last               877
_journal_paper_doi               10.1039/b714293e
_journal_year                    2008
_chemical_absolute_configuration rm
_chemical_formula_sum            'C31 H30 Br Cu3 N6 O2'
_chemical_formula_weight         789.14
_chemical_name_systematic
;
?
;
_space_group_IT_number           5
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C 2y'
_symmetry_space_group_name_H-M   'C 1 2 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                 106.125(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   21.5698(15)
_cell_length_b                   19.2120(13)
_cell_length_c                   8.8873(6)
_cell_measurement_reflns_used    1596
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      26.41
_cell_measurement_theta_min      2.59
_cell_volume                     3538.0(4)
_computing_cell_refinement       SMART
_computing_data_collection       'SMART (Bruker, 2000)'
_computing_data_reduction        'SAINT (Bruker, 2000)'
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.896
_diffrn_measured_fraction_theta_max 0.896
_diffrn_measurement_device_type  'Bruker Smart Apex CCD area detector'
_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  0.0423
_diffrn_reflns_av_sigmaI/netI    0.1710
_diffrn_reflns_limit_h_max       33
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       28
_diffrn_reflns_limit_k_min       -29
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            14182
_diffrn_reflns_theta_full        33.44
_diffrn_reflns_theta_max         33.44
_diffrn_reflns_theta_min         2.12
_exptl_absorpt_coefficient_mu    2.951
_exptl_absorpt_correction_T_max  0.712
_exptl_absorpt_correction_T_min  0.680
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, Bruker(2000)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.482
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1584
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.862
_refine_diff_density_min         -0.680
_refine_diff_density_rms         0.130
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.08(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.953
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     388
_refine_ls_number_reflns         10602
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.953
_refine_ls_R_factor_all          0.2514
_refine_ls_R_factor_gt           0.0830
_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^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1932
_refine_ls_wR_factor_ref         0.2696
_reflns_number_gt                3216
_reflns_number_total             10602
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b714293e.txt
_cod_data_source_block           123
_cod_original_sg_symbol_H-M      C2
_cod_database_code               7003209