Potentially Ferroelectric {CuIIL2}n Based Two-Dimensional Framework Exhibiting High Polarization and Guest-Assisted Dielectric Anomaly
Srivastava, Anant Kumar; Divya, Pillutla; Praveenkumar, B.; Boomishankar, Ramamoorthy; Chemistry of Materials 27 (2015) 5222–; doi:10.1021/acs.chemmater.5b01267

data_4003154
_publ_section_title
;
 Potentially Ferroelectric {CuIIL2}n Based Two-Dimensional Framework
 Exhibiting High Polarization and Guest-Assisted Dielectric Anomaly
;
_journal_issue                   15
_journal_name_full               'Chemistry of Materials'
_journal_page_first              5222
_journal_paper_doi               10.1021/acs.chemmater.5b01267
_journal_volume                  27
_journal_year                    2015
_chemical_formula_sum            'C32 H30 Cu N10 O8 P2'
_chemical_formula_weight         808.14
_space_group_crystal_system      tetragonal
_space_group_IT_number           88
_space_group_name_Hall           '-I 4ad'
_space_group_name_H-M_alt        'I 41/a :2'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   23.781(5)
_cell_length_b                   23.781(5)
_cell_length_c                   11.844(3)
_cell_measurement_reflns_used    3114
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      24.10
_cell_measurement_theta_min      2.42
_cell_volume                     6698(3)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       'Omega and phi scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1293
_diffrn_reflns_av_unetI/netI     0.0676
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.990
_diffrn_reflns_limit_h_max       31
_diffrn_reflns_limit_h_min       -31
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       -31
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            52136
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.990
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.463
_diffrn_reflns_theta_min         1.713
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.817
_exptl_absorpt_correction_T_max  0.7457
_exptl_absorpt_correction_T_min  0.6780
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            'greenish blue'
_exptl_crystal_density_diffrn    1.603
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rod
_exptl_crystal_F_000             3320
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.17
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.413
_refine_diff_density_min         -0.476
_refine_diff_density_rms         0.077
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.005
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     241
_refine_ls_number_reflns         4181
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.005
_refine_ls_R_factor_all          0.0912
_refine_ls_R_factor_gt           0.0436
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0379P)^2^+8.4618P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0850
_refine_ls_wR_factor_ref         0.1003
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2723
_reflns_number_total             4181
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            Compound_2.cif
_cod_data_source_block           Compound_2
_cod_original_cell_volume        6698(4)
_cod_original_sg_symbol_H-M      'I 41/a'
_cod_database_code               4003154
_shelxl_version_number           2014-3
_shelx_res_checksum              35333
_shelx_hkl_checksum              69153