Synthesis, structures and luminescent properties of cadmium(ii) metal organic frameworks based on 3-pyrid-4-ylbenzoic acid, 4-pyrid-4-ylbenzoic acid ligands
Zhou, Xiaojing; Li, Baiyan; Li, Guanghua; zhou, Qi; Shi, Zhan; Feng, Shouhua; CrystEngComm 14 (2012) 4664–; doi:10.1039/c2ce25328c

data_7214995
_publ_section_title
;
 Synthesis, structures and luminescent properties of cadmium(ii) metal
 organic frameworks based on 3-pyrid-4-ylbenzoic acid, 4-pyrid-4-ylbenzoic
 acid ligands
;
_journal_issue                   14
_journal_name_full               CrystEngComm
_journal_page_first              4664
_journal_paper_doi               10.1039/c2ce25328c
_journal_volume                  14
_journal_year                    2012
_chemical_formula_moiety         'C96 H64 Cd4 N8 O16'
_chemical_formula_sum            'C96 H64 Cd4 N8 O16'
_chemical_formula_weight         2035.15
_chemical_melting_point          ?
_chemical_name_systematic
;
?
;
_space_group_IT_number           52
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2a 2bc'
_symmetry_space_group_name_H-M   'P n n a'
_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                   14.498(3)
_cell_length_b                   14.899(3)
_cell_length_c                   17.473(4)
_cell_measurement_reflns_used    4245
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.46
_cell_measurement_theta_min      3.05
_cell_volume                     3774.3(14)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    SHELXP-97
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 9.00cm
_diffrn_measured_fraction_theta_full 0.981
_diffrn_measured_fraction_theta_max 0.981
_diffrn_measurement_device_type  '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  0.0710
_diffrn_reflns_av_sigmaI/netI    0.0434
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            33965
_diffrn_reflns_theta_full        27.46
_diffrn_reflns_theta_max         27.46
_diffrn_reflns_theta_min         3.05
_diffrn_standards_decay_%        none
_diffrn_standards_interval_count none
_diffrn_standards_interval_time  none
_diffrn_standards_number         none
_exptl_absorpt_coefficient_mu    0.597
_exptl_absorpt_correction_T_max  0.8143
_exptl_absorpt_correction_T_min  0.7674
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    0.895
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       octahedral
_exptl_crystal_F_000             1016
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.2
_platon_squeeze_details
;
Approximately 54.6% of the unit cell volume comprises a large region of
disordered solvent which could not be modelled as discrete atomic sites.
We employed PLATON SQUEEZE to calculate the contribution to the diffraction
from the solvent region. SQUEEZE estimated a total count of 390 electrons
per unit cell, and thereby produced a set of solvent-free diffraction
intensities.
;
_refine_diff_density_max         0.655
_refine_diff_density_min         -1.342
_refine_diff_density_rms         0.082
_refine_ls_extinction_coef       0.0257(18)
_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   1.108
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     142
_refine_ls_number_reflns         4245
_refine_ls_number_restraints     12
_refine_ls_restrained_S_all      1.159
_refine_ls_R_factor_all          0.0599
_refine_ls_R_factor_gt           0.0458
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0816P)^2^+0.7604P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1393
_refine_ls_wR_factor_ref         0.1473
_reflns_number_gt                3021
_reflns_number_total             4245
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2ce25328c.txt
_cod_data_source_block           compound2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value 'not measured' was changed to '?' -
the value is undefined or not given.

'_symmetry_cell_setting' value
'Orthorhombic' changed to 'orthorhombic' according to
/usr/data/users/saulius/automatic-downloads/retrospective/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 

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_cell_volume        3774.3(13)
_cod_original_sg_symbol_H-M      Pnna
_cod_database_code               7214995