Silver(I) ions bridged by pyridazine: doubling the ligand functionality for the design of unusual 3D coordination frameworks.
Konstantin V. Domasevitch; Pavlo V. Solntsev; Il'ya A. Gural'skiy; Harald Krautscheid; Eduard B. Rusanov; Alexander N. Chernega; Judith A. K. Howard; Dalton transactions (Cambridge, England : 2003)  (2007) 3893–3905; doi:10.1039/b706731c

data_7005897
_publ_section_title
;
 Silver(I) ions bridged by pyridazine: doubling the ligand
 functionality for the design of unusual 3D coordination frameworks.
;
_journal_issue                   35
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              3893
_journal_page_last               3905
_journal_paper_doi               10.1039/b706731c
_journal_year                    2007
_chemical_formula_moiety         '(C30 H20 Ag4 N20), 4(Cl O4)'
_chemical_formula_sum            'C30 H20 Ag4 Cl4 N20 O16'
_chemical_formula_weight         1489.94
_chemical_name_common
;Silver(i) Perchlorate 4:5 Complex with Pyridazino(4,5-
d)pyridazine
;
_chemical_name_systematic
;
Silver(I) Perchlorate 4:5 Complex with Pyridazino[4,5-d]pyridazine
;
_space_group_IT_number           136
_space_group_name_Hall           '-P 4n 2n'
_space_group_name_H-M_alt        'P 42/m n m'
_symmetry_cell_setting           tetragonal
_symmetry_Int_Tables_number      136
_symmetry_space_group_name_Hall  '-P 4n 2n'
_symmetry_space_group_name_H-M   'P 42/m n 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            2
_cell_length_a                   17.0076(10)
_cell_length_b                   17.0076(10)
_cell_length_c                   7.8591(5)
_cell_measurement_reflns_used    8000
_cell_measurement_temperature    213(2)
_cell_measurement_theta_max      26.01
_cell_measurement_theta_min      5.36
_cell_volume                     2273.3(2)
_computing_cell_refinement       'IPDS Software (Stoe&Cie, 2000)'
_computing_data_collection       'IPDS Software (Stoe&Cie, 2000)'
_computing_data_reduction        'IPDS Software (Stoe&Cie, 2000)'
_computing_molecular_graphics    'Diamond 2.1e (Brandenburg, 1999)'
_computing_publication_material  'WinGX 1.700.00 (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      213(2)
_diffrn_measured_fraction_theta_full 0.981
_diffrn_measured_fraction_theta_max 0.981
_diffrn_measurement_device_type  'Stoe Imaging plate diffraction system'
_diffrn_measurement_method       '\f oscillation 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  0.0303
_diffrn_reflns_av_sigmaI/netI    0.0246
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            10426
_diffrn_reflns_theta_full        26.01
_diffrn_reflns_theta_max         26.01
_diffrn_reflns_theta_min         5.36
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    2.025
_exptl_absorpt_correction_T_max  0.8231
_exptl_absorpt_correction_T_min  0.7931
_exptl_absorpt_correction_type   refdelf
_exptl_absorpt_process_details   'DIFABS, (Walker & Stuart, 1983)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    2.177
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1448
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.572
_refine_diff_density_min         -0.424
_refine_diff_density_rms         0.078
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.973
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     100
_refine_ls_number_reflns         1238
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.973
_refine_ls_R_factor_all          0.0390
_refine_ls_R_factor_gt           0.0260
_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^)+(0.0422P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0660
_refine_ls_wR_factor_ref         0.0680
_reflns_number_gt                866
_reflns_number_total             1238
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b706731c.txt
_cod_data_source_block           (1)
_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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_Hall     '-P 4n 2n '
_cod_original_sg_symbol_H-M      'P4(2)/mnm '
_cod_database_code               7005897