Helix-based supramolecular isomerism of metal‒organic framework
Sang, Rui-Li; Xu, Li; CrystEngComm 12 (2010) 3579–; doi:10.1039/c002677h

data_7212610
_publ_section_title
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 Helix-based supramolecular isomerism of metal--organic framework
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_journal_issue                   11
_journal_name_full               CrystEngComm
_journal_page_first              3579
_journal_paper_doi               10.1039/c002677h
_journal_volume                  12
_journal_year                    2010
_chemical_formula_sum            'C12 H16 Cd N4 O6'
_chemical_formula_weight         424.69
_chemical_name_systematic
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?
;
_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
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            16
_cell_length_a                   16.0070(4)
_cell_length_b                   16.0070(4)
_cell_length_c                   24.1560(10)
_cell_measurement_reflns_used    7905
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.4835
_cell_measurement_theta_min      2.4657
_cell_volume                     6189.3(3)
_computing_cell_refinement       'CrystalClear (Rigaku Corp., 2000)'
_computing_data_collection       'CrystalClear (Rigaku Corp., 2000)'
_computing_data_reduction        'CrystalClear (Rigaku Corp., 2000)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 14.6306
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_method       CCD_Profile_fitting
_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  0.0370
_diffrn_reflns_av_sigmaI/netI    0.0229
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            23468
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         2.47
_exptl_absorpt_coefficient_mu    1.448
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.7872
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            White
_exptl_crystal_density_diffrn    1.823
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             3392
_exptl_crystal_size_max          0.3500
_exptl_crystal_size_mid          0.3000
_exptl_crystal_size_min          0.1500
_refine_diff_density_max         0.395
_refine_diff_density_min         -0.318
_refine_diff_density_rms         0.068
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.03(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.073
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     208
_refine_ls_number_reflns         3566
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.073
_refine_ls_R_factor_all          0.0316
_refine_ls_R_factor_gt           0.0311
_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^)+(0.0349P)^2^+11.1568P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0710
_refine_ls_wR_factor_ref         0.0713
_reflns_number_gt                3530
_reflns_number_total             3566
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c002677h.txt
_cod_data_source_block           5
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from
2011-04-26.

'_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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
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_cod_database_code               7212610