Structure Determination of Triplet Diphenylcarbenes by in Situ X-ray Crystallographic Analysis
Masaki Kawano; Katsuyuki Hirai; Hideo Tomioka; Yuji Ohashi; Journal of the American Chemical Society 129 (2007) 2383–2391; doi:10.1021/ja067306b

data_4109124
_publ_contact_author             'Masaki Kawano'
_publ_contact_author_email       mkawano@chem.titech.ac.jp
_publ_section_title
;
 Structure Determination of Triplet Diphenylcarbenes by in Situ X-ray
 Crystallographic Analysis
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              2383
_journal_page_last               2391
_journal_paper_doi               10.1021/ja067306b
_journal_volume                  129
_journal_year                    2007
_chemical_formula_sum            'C13 H8 Br2 N2'
_chemical_formula_weight         352.03
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 113.701(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   16.7682(5)
_cell_length_b                   3.9553(1)
_cell_length_c                   19.7247(6)
_cell_measurement_reflns_used    5961
_cell_measurement_temperature    80(2)
_cell_measurement_theta_max      25
_cell_measurement_theta_min      2
_cell_volume                     1197.87(6)
_computing_cell_refinement       'Siemens SMART'
_computing_data_collection       'Siemens SMART'
_computing_data_reduction        'Siemens SAINT & SADABS'
_computing_molecular_graphics    'Siemens XP'
_computing_publication_material  'Siemens SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      80(2)
_diffrn_measured_fraction_theta_full 0.986
_diffrn_measured_fraction_theta_max 0.986
_diffrn_measurement_device_type  'Siemens SMART CCD area detector system'
_diffrn_measurement_method       'omega scan'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0455
_diffrn_reflns_av_sigmaI/netI    0.0306
_diffrn_reflns_limit_h_max       30
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            47795
_diffrn_reflns_theta_full        40.00
_diffrn_reflns_theta_max         40.00
_diffrn_reflns_theta_min         1.33
_exptl_absorpt_coefficient_mu    6.743
_exptl_absorpt_correction_T_max  0.7292
_exptl_absorpt_correction_T_min  0.1734
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            reddish_yellow
_exptl_crystal_density_diffrn    1.952
_exptl_crystal_description       plate
_exptl_crystal_F_000             680
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.742
_refine_diff_density_min         -1.359
_refine_diff_density_rms         0.111
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.016
_refine_ls_hydrogen_treatment    ride
_refine_ls_matrix_type           full
_refine_ls_number_parameters     154
_refine_ls_number_reflns         7310
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.016
_refine_ls_R_factor_all          0.0418
_refine_ls_R_factor_gt           0.0264
_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^)+(0.0339P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0584
_refine_ls_wR_factor_ref         0.0619
_reflns_number_gt                5769
_reflns_number_total             7310
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja067306bsi20061011_075725_7.cif
_cod_data_source_block           (p-PhBr)2CN2_(6)
_cod_database_code               4109124