Exploring Chromium(III)-Alkyl Bond Homolysis with CpCr[(ArNCMe)2CH](R) Complexes
K. Cory MacLeod; Julia L. Conway; Brian O. Patrick; Kevin M. Smith; Journal of the American Chemical Society 132 (2010) 17325–17334; doi:10.1021/ja1083392

data_4103643
_publ_section_title
;
 Exploring Chromium(III)-Alkyl Bond Homolysis with CpCr[(ArNCMe)2CH](R)
 Complexes
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              17325
_journal_page_last               17334
_journal_paper_doi               10.1021/ja1083392
_journal_volume                  132
_journal_year                    2010
_chemical_formula_sum            'C41 H53 Cr N2'
_chemical_formula_weight         625.85
_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                 98.6130(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   19.3249(5)
_cell_length_b                   9.0312(2)
_cell_length_c                   20.0983(5)
_cell_measurement_reflns_used    9888
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.92
_cell_measurement_theta_min      2.16
_cell_volume                     3468.14(15)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker X8 APEX II'
_diffrn_measurement_method       'area detector'
_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  0.0230
_diffrn_reflns_av_sigmaI/netI    0.0168
_diffrn_reflns_limit_h_max       25
_diffrn_reflns_limit_h_min       -25
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            46664
_diffrn_reflns_theta_full        27.93
_diffrn_reflns_theta_max         27.93
_diffrn_reflns_theta_min         2.05
_exptl_absorpt_coefficient_mu    0.360
_exptl_absorpt_correction_T_max  0.914
_exptl_absorpt_correction_T_min  0.857
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.199
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1348
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.360
_refine_diff_density_min         -0.438
_refine_diff_density_rms         0.047
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.039
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     399
_refine_ls_number_reflns         8300
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.039
_refine_ls_R_factor_all          0.0373
_refine_ls_R_factor_gt           0.0316
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0418P)^2^+1.8471P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0837
_refine_ls_wR_factor_ref         0.0874
_reflns_number_gt                7324
_reflns_number_total             8300
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja1083392_si_002_16.cif
_cod_data_source_block           10a_Dpp_CH2Ph
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4103643