Stepwise Formation of a Molecular Square with Bridging NH,O-Substituted Dicarbene Building Blocks
Fabian M. Conrady; Roland Fröhlich; Christian Schulte to Brinke; Tania Pape; F. Ekkehardt Hahn; Journal of the American Chemical Society 133 (2011) 11496–11499; doi:10.1021/ja205021p

data_4106480
_publ_section_title
;
 Stepwise Formation of a Molecular Square with Bridging NH,O-Substituted
 Dicarbene Building Blocks
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              11496
_journal_page_last               11499
_journal_paper_doi               10.1021/ja205021p
_journal_volume                  133
_journal_year                    2011
_chemical_formula_sum            'C24 H24 Cl Ir N2 O2'
_chemical_formula_weight         600.10
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           46
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'I 2 -2a'
_symmetry_space_group_name_H-M   'I m a 2'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   16.8925(6)
_cell_length_b                   17.2396(6)
_cell_length_c                   7.5829(3)
_cell_measurement_reflns_used    900
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      22.5
_cell_measurement_theta_min      1
_cell_volume                     2208.29(14)
_computing_cell_refinement       'APEX2(Bruker AXS, 2007)'
_computing_data_collection       'APEX2(Bruker AXS, 2007)'
_computing_data_reduction        'SAINT,SADABS (Bruker AXS, 2007 )'
_computing_molecular_graphics
;
ORTEP3,L.J. Farrugia, J. Appl. Cryst. (1997) 30, 565
;
_computing_structure_refinement
;
SHELXL-97, G. M. Sheldrick, Acta Cryst. (2008) A64, 112-122
;
_computing_structure_solution
;
SHELXS-97 , G. M. Sheldrick, Acta Cryst. (2008) A64, 112-122
;
_diffrn_ambient_temperature      153(2)
_diffrn_detector_area_resol_mean 80
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'Omega and Phi scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0293
_diffrn_reflns_av_sigmaI/netI    0.0339
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            12787
_diffrn_reflns_theta_full        29.99
_diffrn_reflns_theta_max         29.99
_diffrn_reflns_theta_min         1.69
_exptl_absorpt_coefficient_mu    6.190
_exptl_absorpt_correction_T_max  0.7472
_exptl_absorpt_correction_T_min  0.4570
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
 Corrections were done with the SADABS program, utilizing the none merged
 raw data obtained from the integration process. Integration and final cell
 refinement were done with SAINT.

 SADABS reports ratio of Tmin/Tmax = 0.553822  

;
_exptl_crystal_colour            'light yellow'
_exptl_crystal_density_diffrn    1.805
_exptl_crystal_description       'transparent prism'
_exptl_crystal_F_000             1168
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.05
_refine_diff_density_max         2.805
_refine_diff_density_min         -0.403
_refine_diff_density_rms         0.122
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.011(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.060
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     145
_refine_ls_number_reflns         3305
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.060
_refine_ls_R_factor_all          0.0215
_refine_ls_R_factor_gt           0.0204
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0230P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0489
_refine_ls_wR_factor_ref         0.0493
_reflns_number_gt                3181
_reflns_number_total             3305
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja205021p_si_002.cif
_cod_data_source_block           sad
_cod_database_code               4106480