Formation and fine-tuning of metal–organic frameworks with carboxylic pincers for the recognition of a C2H2 tetramer and highly selective separation of C2H2/C2H4
Duan, Yuefeng; Huang, Yuhang; Wang, Chongqing; Wang, Qian; Ge, Kai; Lu, Zhiyong; Wang, Huijie; Duan, Jingui; Bai, Junfeng; Jin, Wanqin; Chemical Science 14 (2023) 4605–4611; doi:10.1039/D3SC00877K

data_1568771
_publ_section_title
;
 Formation and fine-tuning of metal--organic frameworks with carboxylic
 pincers for the recognition of a C2H2 tetramer and highly selective
 separation of C2H2/C2H4
;
_journal_issue                   17
_journal_name_full               'Chemical Science'
_journal_page_first              4605
_journal_page_last               4611
_journal_paper_doi               10.1039/D3SC00877K
_journal_volume                  14
_journal_year                    2023
_chemical_formula_sum            'C26 H28 Cu F6 N8 O8 Ti'
_chemical_formula_weight         806.00
_space_group_crystal_system      tetragonal
_space_group_IT_number           98
_space_group_name_Hall           'I 4bw 2bw'
_space_group_name_H-M_alt        'I 41 2 2'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2023-03-23 deposited with the CCDC.	2023-04-03 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   16.5421(4)
_cell_length_b                   16.5421(4)
_cell_length_c                   31.7992(14)
_cell_measurement_reflns_used    8406
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      29.52
_cell_measurement_theta_min      2.274
_cell_volume                     8701.6(5)
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker Smart CCD'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0685
_diffrn_reflns_av_unetI/netI     0.0508
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       37
_diffrn_reflns_limit_l_min       -37
_diffrn_reflns_number            18778
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.099
_diffrn_reflns_theta_max         25.098
_diffrn_reflns_theta_min         2.162
_exptl_absorpt_coefficient_mu    0.743
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    1.230
_exptl_crystal_description       block
_exptl_crystal_F_000             3272
_exptl_crystal_size_max          0.120
_exptl_crystal_size_mid          0.120
_exptl_crystal_size_min          0.100
_refine_diff_density_max         1.045
_refine_diff_density_min         -0.475
_refine_diff_density_rms         0.145
_refine_ls_abs_structure_details
;
 Refined as an inversion twin.
;
_refine_ls_abs_structure_Flack   -0.04(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.083
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     220
_refine_ls_number_reflns         3885
_refine_ls_number_restraints     378
_refine_ls_restrained_S_all      1.038
_refine_ls_R_factor_all          0.0927
_refine_ls_R_factor_gt           0.0773
_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^)+(0.1800P)^2^+1.0200P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2270
_refine_ls_wR_factor_ref         0.2419
_reflns_Friedel_coverage         0.746
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     1.000
_reflns_number_gt                3147
_reflns_number_total             3885
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3sc00877k2.cif
_cod_data_source_block           a_CCDC2
_cod_depositor_comments
'Adding full bibliography for 1568769--1568774.cif.'
_cod_original_cell_volume        8701.6(6)
_cod_database_code               1568771
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.916
_shelx_estimated_absorpt_t_max   0.929
_shelx_res_checksum              81834
_shelx_hkl_checksum              13704