Highly-thermostable metal-organic frameworks (MOFs) of zinc and cadmium 4,4'-(hexafluoroisopropylidene)diphthalates with a unique fluorite topology.
Zou, Ru-Qiang; Zhong, Rui-Qin; Du, Miao; Kiyobayashi, Tetsu; Xu, Qiang; Chemical communications (Cambridge, England)  (2007) 2467–2469; doi:10.1039/b701200d

data_7101986
_publ_section_title
;
 Highly-thermostable metal-organic frameworks (MOFs) of zinc and
 cadmium 4,4'-(hexafluoroisopropylidene)diphthalates with a unique
 fluorite topology.
;
_journal_issue                   24
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              2467
_journal_page_last               2469
_journal_paper_doi               10.1039/b701200d
_journal_year                    2007
_chemical_formula_sum            'C19 H6 F6 O8 Zn2'
_chemical_formula_weight         606.98
_chemical_name_systematic
;
?
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 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                 90.73(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   24.483(5)
_cell_length_b                   7.7834(16)
_cell_length_c                   10.488(2)
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      3.02
_cell_volume                     1998.4(7)
_computing_molecular_graphics    Shelxtl
_computing_publication_material  Shelxtl
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'Rigaku RAXIS-RAPID'
_diffrn_measurement_method       \w
_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  0.0419
_diffrn_reflns_av_sigmaI/netI    0.0350
_diffrn_reflns_limit_h_max       29
_diffrn_reflns_limit_h_min       -29
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            7365
_diffrn_reflns_theta_full        25.19
_diffrn_reflns_theta_max         25.19
_diffrn_reflns_theta_min         3.33
_exptl_absorpt_coefficient_mu    2.504
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.793
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Higashi, T. (1995). Program for Absorption Correction.
Rigaku Corporation, Tokyo, Japan.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    2.017
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1192
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.16
_refine_diff_density_max         2.106
_refine_diff_density_min         -0.981
_refine_diff_density_rms         0.186
_refine_ls_extinction_coef       0.0038(9)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.170
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     160
_refine_ls_number_reflns         1786
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.170
_refine_ls_R_factor_all          0.0675
_refine_ls_R_factor_gt           0.0625
_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^)+(0.1033P)^2^+32.2235P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1893
_refine_ls_wR_factor_ref         0.1953
_reflns_number_gt                1588
_reflns_number_total             1786
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b701200d.txt
_cod_data_source_block           1
_cod_depositor_comments
;
The following automatic conversions were performed:
'_exptl_absorpt_correction_type' value 'MULTI-SCAN' changed to
'multi-scan' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'none' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7101986