A Reversible Crystallinity-Preserving Phase Transition in Metal-Organic Frameworks: Discovery, Mechanistic Studies, and Potential Applications.
Liu, Dahuan; Liu, Tian-Fu; Chen, Ying-Pin; Zou, Lanfang; Feng, Dawei; Wang, Kecheng; Zhang, Qiang; Yuan, Shuai; Zhong, Chongli; Zhou, Hong-Cai; Journal of the American Chemical Society 137 (2015) 7740–7746; doi:10.1021/jacs.5b02999

data_4123915
_publ_section_title
;
 A Reversible Crystallinity-Preserving Phase Transition in Metal-Organic
 Frameworks: Discovery, Mechanistic Studies, and Potential Applications.
;
_journal_issue                   24
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              7740
_journal_page_last               7746
_journal_paper_doi               10.1021/jacs.5b02999
_journal_volume                  137
_journal_year                    2015
_chemical_formula_moiety         '(Cd4 Cl5) (C48 H24 N20 Cd O)2 (Cd O2)2'
_chemical_formula_sum            'C96 H48 Cd8 Cl5 N40 O6'
_chemical_formula_weight         2934.19
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           123
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  '-P 4 2'
_symmetry_space_group_name_H-M   'P 4/m m m'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            1
_cell_length_a                   21.599(2)
_cell_length_b                   21.599(2)
_cell_length_c                   19.383(4)
_cell_measurement_reflns_used    3000
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      20.2799
_cell_measurement_theta_min      2.1587
_cell_volume                     9042(2)
_computing_cell_refinement       'SAINT+ ver. (Bruker, 2001)'
_computing_data_collection       'APEX2  (Bruker, 2008)'
_computing_data_reduction        'SAINT+ ver. (Bruker, 2001)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker SMART APEX II CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.1413
_diffrn_reflns_av_sigmaI/netI    0.1066
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            48647
_diffrn_reflns_theta_full        23.38
_diffrn_reflns_theta_max         23.38
_diffrn_reflns_theta_min         1.70
_exptl_absorpt_coefficient_mu    0.519
_exptl_absorpt_correction_T_max  0.9499
_exptl_absorpt_correction_T_min  0.9262
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2008)'
_exptl_crystal_colour            Purple
_exptl_crystal_density_diffrn    0.539
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Blocky
_exptl_crystal_F_000             1421
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_platon_squeeze_details
;
;
_refine_diff_density_max         0.566
_refine_diff_density_min         -0.344
_refine_diff_density_rms         0.054
_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     124
_refine_ls_number_reflns         3766
_refine_ls_number_restraints     16
_refine_ls_restrained_S_all      1.005
_refine_ls_R_factor_all          0.1106
_refine_ls_R_factor_gt           0.0558
_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^)+(0.0400P)^2^+4.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1227
_refine_ls_wR_factor_ref         0.1287
_reflns_number_gt                1906
_reflns_number_total             3766
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja5b02999_si_002.cif
_cod_data_source_block           aaa_295k_sq
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
according to
/usr/data/users/saulius/crontab/automatic-downloads/current/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3271 2015-04-21 07:52:19Z andrius 
;
_cod_original_cell_volume        9043(2)
_cod_original_sg_symbol_H-M      P4/mmm
_cod_database_code               4123915