Halogen Exchange and Scrambling between C-X and M-X' Bonds in Copper, Nickel, and Cobalt Complexes of 6,6'-bis(bromo/ chloromethyl)-2,2'-bipyridine. Structural, Electrochemical, and Photochemical Studies
Meenakshi Ghosh; Papu Biswas; Ulrich Flörke; Kamalaksha Nag; Inorganic Chemistry 47 (2008) 281–296; doi:10.1021/ic7014786

data_4304091
_publ_section_title
;
Halogen Exchange and Scrambling between C-X and M-X' Bonds in Copper,
Nickel, and Cobalt Complexes of 6,6'-bis(bromo/
chloromethyl)-2,2'-bipyridine. Structural, Electrochemical, and
Photochemical Studies
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              281
_journal_page_last               296
_journal_paper_doi               10.1021/ic7014786
_journal_volume                  47
_journal_year                    2008
_chemical_formula_moiety         'C12 H10 Br1.73 Cl2.27 N2 Ni, H2 O'
_chemical_formula_sum            'C12 H12 Br1.73 Cl2.27 N2 Ni O'
_chemical_formula_weight         477.66
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 93.8060(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.8515(6)
_cell_length_b                   7.6429(5)
_cell_length_c                   20.6049(13)
_cell_measurement_reflns_used    3998
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      28.12
_cell_measurement_theta_min      2.36
_cell_volume                     1548.00(17)
_computing_cell_refinement       'SAINT (Bruker, 2002)'
_computing_data_collection       'SMART (Bruker, 2002)'
_computing_data_reduction        'SAINT (Bruker, 2002)'
_computing_molecular_graphics    'SHELXTL (Bruker, 2002)'
_computing_publication_material  'SHELXTL (Bruker, 2002)'
_computing_structure_refinement  'SHELXTL (Bruker, 2002)'
_computing_structure_solution    'SHELXTL (Bruker, 2002)'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker AXS SMART APEX'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0303
_diffrn_reflns_av_sigmaI/netI    0.0347
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            12236
_diffrn_reflns_theta_full        27.87
_diffrn_reflns_theta_max         27.87
_diffrn_reflns_theta_min         1.98
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  430
_diffrn_standards_number         3877
_exptl_absorpt_coefficient_mu    6.105
_exptl_absorpt_correction_T_max  0.3154
_exptl_absorpt_correction_T_min  0.1871
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker, 2002)'
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    2.049
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             932
_exptl_crystal_size_max          0.37
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.979
_refine_diff_density_min         -0.363
_refine_diff_density_rms         0.100
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.998
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     223
_refine_ls_number_reflns         3666
_refine_ls_number_restraints     11
_refine_ls_restrained_S_all      0.997
_refine_ls_R_factor_all          0.0399
_refine_ls_R_factor_gt           0.0321
_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^)+(0.0501P)^2^+1.4543P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0836
_refine_ls_wR_factor_ref         0.0874
_reflns_number_gt                3129
_reflns_number_total             3666
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic7014786-file003_8.cif
_cod_data_source_block           12
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4304091