A rare unsupported iridium(II) dimer, [IrCl2(CO)2]2.
Patra, Sanjib K; Rahaman, S M Wahidur; Majumdar, Moumita; Sinha, Arup; Bera, Jitendra K; Chemical communications (Cambridge, England)  (2008) 2511–2513; doi:10.1039/b803632b

data_7103161
_publ_section_title
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 A rare unsupported iridium(II) dimer, [IrCl2(CO)2]2.
;
_journal_issue                   22
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              2511
_journal_page_last               2513
_journal_paper_doi               10.1039/b803632b
_journal_year                    2008
_chemical_formula_moiety         ' C40 H28 Cl4 Fe2 Ir2 N4 O4, C2 H4 Cl4 '
_chemical_formula_sum            'C42 H28 Cl8 Fe2 Ir2 N4 O4'
_chemical_formula_weight         1432.38
_chemical_name_systematic
;
?
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 97.097(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   16.473(2)
_cell_length_b                   14.541(2)
_cell_length_c                   20.961(3)
_cell_measurement_temperature    100(2)
_cell_volume                     4982.5(12)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    ORTEP
_computing_publication_material  ciftab
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Bruker SMART APEX'
_diffrn_measurement_method       'omega 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  0.0729
_diffrn_reflns_av_sigmaI/netI    0.0964
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            13966
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         2.04
_exptl_absorpt_coefficient_mu    6.367
_exptl_absorpt_correction_T_max  0.3624
_exptl_absorpt_correction_T_min  0.3624
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.910
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2728
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.20
_refine_diff_density_max         3.039
_refine_diff_density_min         -2.152
_refine_diff_density_rms         0.248
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.991
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     254
_refine_ls_number_reflns         5057
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      0.996
_refine_ls_R_factor_all          0.0820
_refine_ls_R_factor_gt           0.0554
_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^)+(0.0626P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1187
_refine_ls_wR_factor_ref         0.1277
_reflns_number_gt                3660
_reflns_number_total             5057
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b803632b.txt
_cod_data_source_block           compound5
_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_H-M      C2/c
_cod_database_code               7103161