π-π Stacking, spin density and magnetic coupling strength.
Chi, Yan-Hui; Shi, Jing-Min; Li, Hong-Nan; Wei, Wei; Cottrill, Ethan; Pan, Ning; Chen, Hu; Liang, Yuan; Yu, Li; Zhang, Yi-Quan; Hou, Chao; Dalton transactions (Cambridge, England : 2003) 42 (2013) 15559–15569; doi:10.1039/c3dt51476e

data_7023560
_publ_section_title
;
 \p-\p Stacking, spin density and magnetic coupling strength.
;
_journal_issue                   44
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              15559
_journal_page_last               15569
_journal_paper_doi               10.1039/c3dt51476e
_journal_volume                  42
_journal_year                    2013
_chemical_formula_sum            'C16 H12 Br2 Cu N4'
_chemical_formula_weight         483.66
_chemical_name_systematic
;
?
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                92.376(3)
_cell_angle_beta                 96.640(3)
_cell_angle_gamma                94.368(2)
_cell_formula_units_Z            2
_cell_length_a                   8.0958(16)
_cell_length_b                   9.0668(18)
_cell_length_c                   10.991(2)
_cell_measurement_reflns_used    1852
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      27.607
_cell_measurement_theta_min      2.2555
_cell_volume                     798.0(3)
_computing_cell_refinement       'SAINT (Bruker, 1997)'
_computing_data_collection       'SMART (Bruker, 1997)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    SHELXTL
_computing_publication_material  'SHELXTL and local programs'
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Bruker, 2001)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.973
_diffrn_measured_fraction_theta_max 0.973
_diffrn_measurement_device_type  'Bruker Smart APEX CCD'
_diffrn_measurement_method       '\f and \w 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  0.0220
_diffrn_reflns_av_sigmaI/netI    0.0474
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            4338
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         1.87
_exptl_absorpt_coefficient_mu    6.378
_exptl_absorpt_correction_T_max  0.4688
_exptl_absorpt_correction_T_min  0.2137
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    2.013
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             470
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.727
_refine_diff_density_min         -0.577
_refine_diff_density_rms         0.115
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.064
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     209
_refine_ls_number_reflns         3043
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.064
_refine_ls_R_factor_all          0.0484
_refine_ls_R_factor_gt           0.0376
_refine_ls_shift/su_max          0.009
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0495P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0931
_refine_ls_wR_factor_ref         0.0964
_reflns_number_gt                2491
_reflns_number_total             3043
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3dt51476e.txt
_cod_data_source_block           110922am
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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 
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7023560