Molecular sieving of ethylene from ethane using a rigid metal-organic framework
Rui-Biao Lin; Libo Li; Hao-Long Zhou; Hui Wu; Chaohui He; Shun Li; Rajamani Krishna; Jinping Li; Wei Zhou; Banglin Chen; Nature Materials 17 (2018) 1128–1133; doi:10.1038/s41563-018-0206-2

data_1550333
_publ_section_title
;
 Molecular sieving of ethylene from ethane using a rigid metal-organic
 framework
;
_journal_name_full               'Nature Materials'
_journal_page_first              1128
_journal_page_last               1133
_journal_paper_doi               10.1038/s41563-018-0206-2
_journal_volume                  17
_journal_year                    2018
_chemical_formula_sum            'C4.4 H2.8 Ca O5'
_chemical_formula_weight         175.75
_space_group_IT_number           122
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'I -4 2bw'
_symmetry_space_group_name_H-M   'I -4 2 d'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   13.6335(7)
_cell_length_b                   13.6335(7)
_cell_length_c                   7.6869(18)
_cell_measurement_reflns_used    3468
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      66.65
_cell_measurement_theta_min      4.58
_cell_volume                     1428.8(4)
_computing_cell_refinement       'SAINT v8.37A (Bruker, 2015)'
_computing_data_reduction        'SAINT v8.37A (Bruker, 2015)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Burker APEX II-CCD'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0613
_diffrn_reflns_av_sigmaI/netI    0.0338
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            5890
_diffrn_reflns_theta_full        67.08
_diffrn_reflns_theta_max         67.08
_diffrn_reflns_theta_min         6.49
_exptl_absorpt_coefficient_mu    7.401
_exptl_absorpt_correction_T_max  0.4704
_exptl_absorpt_correction_T_min  0.2591
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.1342 before and 0.0840 after correction.
The Ratio of minimum to maximum transmission is 0.3079.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.634
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             714
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.12
_refine_diff_density_max         1.092
_refine_diff_density_min         -0.337
_refine_diff_density_rms         0.149
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.06(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.067
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     60
_refine_ls_number_reflns         644
_refine_ls_number_restraints     13
_refine_ls_restrained_S_all      1.095
_refine_ls_R_factor_all          0.0512
_refine_ls_R_factor_gt           0.0489
_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^)+(0.1043P)^2^+4.4628P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1402
_refine_ls_wR_factor_ref         0.1424
_reflns_number_gt                610
_reflns_number_total             644
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            File-2.cif
_cod_data_source_block           UTSA-280_C2H4
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 5642 2017-10-24 12:04:52Z antanas 
;
_cod_original_sg_symbol_H-M      I-42d
_cod_original_formula_sum        'C4.40 H2.80 Ca O5'
_cod_database_code               1550333