Catalytic Formation of Asymmetric Carbodiimides at Mononuclear Chromium(II/IV) Bis(alkoxide) Complexes
Yousif, Maryam; Tjapkes, Daniel J.; Lord, Richard L.; Groysman, Stanislav; Organometallics 34 (2015) 5119–; doi:10.1021/acs.organomet.5b00703

data_4086318
_publ_section_title
;
 Catalytic Formation of Asymmetric Carbodiimides at Mononuclear
 Chromium(II/IV) Bis(alkoxide) Complexes
;
_journal_issue                   20
_journal_name_full               Organometallics
_journal_page_first              5119
_journal_paper_doi               10.1021/acs.organomet.5b00703
_journal_volume                  34
_journal_year                    2015
_chemical_formula_sum            'C45 H57 Cr N O2'
_chemical_formula_weight         695.92
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           5
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C 2y'
_symmetry_space_group_name_H-M   'C 1 2 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                 114.717(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   20.0987(15)
_cell_length_b                   9.4936(6)
_cell_length_c                   23.0515(16)
_cell_measurement_temperature    100(2)
_cell_volume                     3995.5(5)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.983
_diffrn_measured_fraction_theta_max 0.983
_diffrn_measurement_device_type  'Bruker Apex2'
_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  0.0421
_diffrn_reflns_av_sigmaI/netI    0.0305
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            65097
_diffrn_reflns_theta_full        27.81
_diffrn_reflns_theta_max         27.81
_diffrn_reflns_theta_min         0.97
_exptl_absorpt_coefficient_mu    0.322
_exptl_absorpt_correction_T_max  0.9685
_exptl_absorpt_correction_T_min  0.9533
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.157
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       bricks
_exptl_crystal_F_000             1496
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         1.496
_refine_diff_density_min         -0.320
_refine_diff_density_rms         0.078
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.384(16)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.074
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     444
_refine_ls_number_reflns         9287
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.074
_refine_ls_R_factor_all          0.0487
_refine_ls_R_factor_gt           0.0452
_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^)+(0.0778P)^2^+3.8149P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1260
_refine_ls_wR_factor_ref         0.1283
_reflns_number_gt                8674
_reflns_number_total             9287
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om5b00703_si_001.cif
_cod_data_source_block           sg434
_cod_depositor_comments
'Adding full bibliography for 4086317--4086323.cif.'
_cod_original_sg_symbol_H-M      C2
_cod_database_code               4086318