A Diels-Alder reaction triggered by a [4 + 3] metallacycloaddition.
Vivancos, Ángela; Vattier, Florencia; López-Serrano, Joaquín; Paneque, Margarita; Poveda, Manuel L.; Álvarez, Eleuterio; Journal of the American Chemical Society 137 (2015) 4074–4077; doi:10.1021/jacs.5b01532

data_4129379
_publ_section_title
;
 A Diels-Alder reaction triggered by a [4 + 3] metallacycloaddition.
;
_journal_issue                   12
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              4074
_journal_page_last               4077
_journal_paper_doi               10.1021/jacs.5b01532
_journal_volume                  137
_journal_year                    2015
_chemical_formula_moiety         'C31 H38 B Ir N6 O4'
_chemical_formula_sum            'C31 H38 B Ir N6 O4'
_chemical_formula_weight         761.68
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_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                 111.218(8)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   34.237(10)
_cell_length_b                   10.824(2)
_cell_length_c                   16.931(5)
_cell_measurement_reflns_used    1166
_cell_measurement_temperature    213(2)
_cell_measurement_theta_max      17.29
_cell_measurement_theta_min      2.55
_cell_volume                     5849(3)
_computing_cell_refinement       'APEX2 Software Suite (Bruker, 2007)'
_computing_data_collection       'APEX2 Software Suite (Bruker, 2007)'
_computing_data_reduction        'APEX2 Software Suite (Bruker, 2007)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'SHELXTL and publCIF (Westrip, 2010)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SIR2002 (Burla et al., 2003)'
_diffrn_ambient_temperature      213(2)
_diffrn_detector_area_resol_mean 8.26
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device_type
;
 Bruker-Nonius X8kappa APEX II CCD area detector
;
_diffrn_measurement_method       'phi and omega scans 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  0.0901
_diffrn_reflns_av_sigmaI/netI    0.1029
_diffrn_reflns_limit_h_max       41
_diffrn_reflns_limit_h_min       -32
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            22231
_diffrn_reflns_theta_full        25.25
_diffrn_reflns_theta_max         25.25
_diffrn_reflns_theta_min         1.28
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    4.614
_exptl_absorpt_correction_T_max  0.8021
_exptl_absorpt_correction_T_min  0.7589
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
program SADABS, Bruker (2001).
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.730
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             3040
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.05
_refine_diff_density_max         7.136
_refine_diff_density_min         -4.367
_refine_diff_density_rms         0.352
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.093
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     395
_refine_ls_number_reflns         5220
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.1164
_refine_ls_R_factor_gt           0.0713
_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^)+(0.0719P)^2^+924.2426P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1565
_refine_ls_wR_factor_ref         0.2115
_reflns_number_gt                3239
_reflns_number_total             5220
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja5b01532_si_001.cif
_cod_data_source_block           4
_cod_depositor_comments
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The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/ACS/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               4129379