Transition Metal Migration upon Attempting the Wolff Rearrangement of an Ir(III) Five-Membered Metallacycle
Margarita Gómez; Margarita Paneque; Manuel L. Poveda; Eleuterio Alvarez; Journal of the American Chemical Society 129 (2007) 6092–6093; doi:10.1021/ja070360n

data_4109418
_publ_section_title
;
 Transition Metal Migration upon Attempting the Wolff Rearrangement of an
 Ir(III) Five-Membered Metallacycle
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              6092
_journal_page_last               6093
_journal_paper_doi               10.1021/ja070360n
_journal_volume                  129
_journal_year                    2007
_chemical_formula_moiety         'C18 H24 B Ir N6 O3, C7 H8'
_chemical_formula_sum            'C25 H32 B Ir N6 O3'
_chemical_formula_weight         667.58
_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                 99.1630(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.8412(2)
_cell_length_b                   17.0571(3)
_cell_length_c                   15.9482(4)
_cell_measurement_reflns_used    7617
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.07
_cell_measurement_theta_min      2.85
_cell_volume                     2642.94(10)
_computing_cell_refinement       'SAINT+ v. 7.06 a (Bruker AXS, 2003)'
_computing_data_collection       'APEX-W2K-NT v. 1.0 (Bruker AXS, 2004)'
_computing_data_reduction        'SAINT+ v. 7.06 a (Bruker AXS, 2001)'
_computing_molecular_graphics    'XP, SHELXTL v. 6.10 (Bruker, 2000)'
_computing_publication_material  'XCIF, SHELXTL v. 6.12 (Bruker, 2001)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 8.26
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker-Nonius X8kappa APEX II CCD system'
_diffrn_measurement_method       '\w rotations with narrow frames'
_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  0.0410
_diffrn_reflns_av_sigmaI/netI    0.0729
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            29102
_diffrn_reflns_theta_full        30.52
_diffrn_reflns_theta_max         30.52
_diffrn_reflns_theta_min         3.06
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    5.090
_exptl_absorpt_correction_T_max  0.6663
_exptl_absorpt_correction_T_min  0.5154
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
 SADABS: Area-Detector Absorption Correction. Bruker-AXS 
 within SAINT+ package, v. 6.22 (2001).
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.678
_exptl_crystal_description       plate
_exptl_crystal_F_000             1320
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.08
_refine_diff_density_max         4.659
_refine_diff_density_min         -2.192
_refine_diff_density_rms         0.179
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.176(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.010
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     650
_refine_ls_number_reflns         14564
_refine_ls_number_restraints     127
_refine_ls_restrained_S_all      1.008
_refine_ls_R_factor_all          0.0594
_refine_ls_R_factor_gt           0.0462
_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^)+(0.0549P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1010
_refine_ls_wR_factor_ref         0.1062
_reflns_number_gt                12393
_reflns_number_total             14564
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja070360nsi20070117_122241.cif
_cod_data_source_block           7
_cod_database_code               4109418