Dinuclear ruthenium(ii) complexes [{(L)ClRuII}2(??-tppz)]2+ (L = an arylazopyridine ligand) incorporating tetrakis(2-pyridyl)pyrazine (tppz) bridging ligand: synthesis, structure and spectroelectrochemical properties
Chanda, Nripen; Laye, Rebecca H.; Chakraborty, Soma; Paul, Rowena L.; Jeffery, John C.; Ward, Michael D.; Lahiri, Goutam Kumar; Journal of the Chemical Society, Dalton Transactions  (2002) 3496–; doi:10.1039/b204862k

data_7011835
_publ_section_title
;
 Dinuclear ruthenium(ii) complexes [{(L)ClRuII}2(??-tppz)]2+ (L = an
 arylazopyridine ligand) incorporating tetrakis(2-pyridyl)pyrazine
 (tppz) bridging ligand: synthesis, structure and
 spectroelectrochemical properties
;
_journal_issue                   18
_journal_name_full
'Journal of the Chemical Society, Dalton Transactions'
_journal_page_first              3496
_journal_paper_doi               10.1039/b204862k
_journal_year                    2002
_chemical_formula_sum            'C48.33 H40 Cl4.67 N12 O8.67 Ru2'
_chemical_formula_weight         1295.16
_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                98.012(2)
_cell_angle_beta                 96.6450(10)
_cell_angle_gamma                99.560(2)
_cell_formula_units_Z            3
_cell_length_a                   10.9908(3)
_cell_length_b                   12.7354(3)
_cell_length_c                   27.5708(7)
_cell_measurement_temperature    90(2)
_cell_volume                     3730.11(17)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      90(2)
_diffrn_measured_fraction_theta_full 0.691
_diffrn_measured_fraction_theta_max 0.691
_diffrn_measurement_device_type  'Bruker-AXS Proteum with Area Detector'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_wavelength     1.54056
_diffrn_reflns_av_R_equivalents  0.0297
_diffrn_reflns_av_sigmaI/netI    0.0272
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            12174
_diffrn_reflns_theta_full        58.97
_diffrn_reflns_theta_max         58.97
_diffrn_reflns_theta_min         1.63
_exptl_absorpt_coefficient_mu    7.818
_exptl_absorpt_correction_T_max  0.69
_exptl_absorpt_correction_T_min  0.47
_exptl_absorpt_correction_type   'Empirical, pseudo-azimuthal scan (SADABS)'
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.730
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1952
_exptl_crystal_size_max          0.1
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.05
_refine_diff_density_max         1.078
_refine_diff_density_min         -1.036
_refine_diff_density_rms         0.177
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.129
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     978
_refine_ls_number_reflns         7425
_refine_ls_number_restraints     24
_refine_ls_restrained_S_all      1.128
_refine_ls_R_factor_all          0.0702
_refine_ls_R_factor_gt           0.0566
_refine_ls_shift/su_max          0.021
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1280P)^2^+29.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1593
_refine_ls_wR_factor_ref         0.2097
_reflns_number_gt                6508
_reflns_number_total             7425
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b204862k.txt
_cod_data_source_block           Cif_for_[4](ClO4)2(H2O)2/3(CH2Cl2)1/3
_cod_original_cell_volume        3730.10(16)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7011835