First Examples of Diazepanylidene Carbenes and Their Late-Transition-Metal Complexes
Iglesias, Manuel; Beetstra, Dirk J.; Stasch, Andreas; Horton, Peter N.; Hursthouse, Michael B.; Coles, Simon J.; Cavell, Kingsley J.; Dervisi, Athanasia; Fallis, Ian A.; Organometallics 26 (2007) 4800–; doi:10.1021/om7004904

data_4073600
_publ_section_title
;
 First Examples of Diazepanylidene Carbenes and Their
 Late-Transition-Metal Complexes
;
_journal_issue                   19
_journal_name_full               Organometallics
_journal_page_first              4800
_journal_paper_doi               10.1021/om7004904
_journal_volume                  26
_journal_year                    2007
_chemical_formula_sum            'C28.75 H47.75 Br Ir N2 O2'
_chemical_formula_weight         725.55
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 109.39(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   20.584(4)
_cell_length_b                   12.814(3)
_cell_length_c                   27.659(6)
_cell_measurement_temperature    150(2)
_cell_volume                     6882(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_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  0.0950
_diffrn_reflns_av_sigmaI/netI    0.0922
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       33
_diffrn_reflns_limit_l_min       -33
_diffrn_reflns_number            53504
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         2.94
_exptl_absorpt_coefficient_mu    5.064
_exptl_absorpt_correction_T_max  0.736
_exptl_absorpt_correction_T_min  0.478
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sortav (Blessing, 1995)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.401
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             2898
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.08
_refine_diff_density_max         1.048
_refine_diff_density_min         -1.677
_refine_diff_density_rms         0.138
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.025(8)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.061
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1233
_refine_ls_number_reflns         25075
_refine_ls_number_restraints     19
_refine_ls_restrained_S_all      1.062
_refine_ls_R_factor_all          0.0705
_refine_ls_R_factor_gt           0.0563
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0714P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1389
_refine_ls_wR_factor_ref         0.1466
_reflns_number_gt                20709
_reflns_number_total             25075
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om7004904-file002.cif
_cod_data_source_block           Ir(COD)(4)Cl
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'multi scan' changed to
'multi-scan' 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 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        6882(2)
_cod_original_sg_symbol_H-M      P2(1)
_cod_database_code               4073600