4,4'-Bipyridazine: a new twist for the synthesis of coordination polymers.
Konstantin V. Domasevitch; Il'ya A. Gural'skiy; Pavlo V. Solntsev; Eduard B. Rusanov; Harald Krautscheid; Judith A. K. Howard; Alexander N. Chernega; Dalton transactions (Cambridge, England : 2003)  (2007) 3140–3148; doi:10.1039/b703911e

data_7005653
_publ_section_title
;
 4,4'-Bipyridazine: a new twist for the synthesis of coordination
 polymers.
;
_journal_issue                   29
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              3140
_journal_page_last               3148
_journal_paper_doi               10.1039/b703911e
_journal_year                    2007
_chemical_formula_moiety         'C8 H6 Br2 Cu2 N4'
_chemical_formula_sum            'C8 H6 Br2 Cu2 N4'
_chemical_formula_weight         445.07
_chemical_name_common
'Copper(i) Bromide 2:1 Complex with 4,4'-Bipyridazine'
_chemical_name_systematic
;
Copper(I) Bromide 2:1 Complex with 4,4'-Bipyridazine
;
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 112.79(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   6.712(2)
_cell_length_b                   13.450(4)
_cell_length_c                   6.807(3)
_cell_measurement_reflns_used    24
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      19.12
_cell_measurement_theta_min      13.25
_cell_volume                     566.5(4)
_computing_cell_refinement       'CAD4 Express (Enraf Nonius, 1994)'
_computing_data_collection       'CAD4 Express (Enraf Nonius, 1994)'
_computing_data_reduction        'XCAD4 (Harms & Wocadlo, 1995)'
_computing_molecular_graphics    'Diamond 2.1c (Brandenburg, 1999)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Enraf-Nonius CAD4'
_diffrn_measurement_method       'non-profiled \w-2\q 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  0.0765
_diffrn_reflns_av_sigmaI/netI    0.0347
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            1068
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         3.03
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  120
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    10.779
_exptl_absorpt_correction_T_max  0.0941
_exptl_absorpt_correction_T_min  0.0659
_exptl_absorpt_correction_type   psi-scan
_exptl_absorpt_process_details   '(North et al., 1968)'
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    2.609
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             420
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.976
_refine_diff_density_min         -0.600
_refine_diff_density_rms         0.152
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.050
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     73
_refine_ls_number_reflns         983
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.050
_refine_ls_R_factor_all          0.0491
_refine_ls_R_factor_gt           0.0380
_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^)+(0.0607P)^2^+0.4807P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0933
_refine_ls_wR_factor_ref         0.0987
_reflns_number_gt                830
_reflns_number_total             983
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b703911e.txt
_cod_data_source_block           (8)
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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 2ybc '
_cod_original_sg_symbol_H-M      'P2(1)/c '
_cod_database_code               7005653