Formation of stable iron/cobalt NHC complexes via unexpected ring opening and in situ generation of a tridentate ligand.
Wang, Gao-Feng; Song, Xiao-Jiao; Chen, Fei; Li, Yi-Zhi; Chen, Xue-Tai; Xue, Zi-Ling; Dalton transactions (Cambridge, England : 2003) 41 (2012) 10919–10922; doi:10.1039/c2dt30894k

data_7019977
_publ_section_title
;
 Formation of stable iron/cobalt NHC complexes via unexpected ring opening
 and in situ generation of a tridentate ligand.
;
_journal_issue                   36
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              10919
_journal_page_last               10922
_journal_paper_doi               10.1039/c2dt30894k
_journal_volume                  41
_journal_year                    2012
_chemical_formula_sum            'C26 H39 Co2 I2 N25 O4'
_chemical_formula_weight         1137.48
_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                 107.802(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   19.9487(18)
_cell_length_b                   12.1594(13)
_cell_length_c                   20.182(2)
_cell_measurement_temperature    291(2)
_cell_volume                     4661.0(8)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      291(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0355
_diffrn_reflns_av_sigmaI/netI    0.0514
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            12844
_diffrn_reflns_theta_full        25.35
_diffrn_reflns_theta_max         25.35
_diffrn_reflns_theta_min         1.99
_exptl_absorpt_coefficient_mu    2.096
_exptl_absorpt_correction_T_max  0.7723
_exptl_absorpt_correction_T_min  0.6223
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.621
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2248
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.13
_refine_diff_density_max         0.820
_refine_diff_density_min         -0.697
_refine_diff_density_rms         0.101
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.034
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     284
_refine_ls_number_reflns         4260
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.034
_refine_ls_R_factor_all          0.0632
_refine_ls_R_factor_gt           0.0511
_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^)+(0.0500P)^2^+1.9900P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0945
_refine_ls_wR_factor_ref         0.0986
_reflns_number_gt                3577
_reflns_number_total             4260
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2dt30894k.txt
_cod_data_source_block           1_3
_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_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_cell_volume        4661.0(9)
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7019977