Cyclopentadienyl Chromium β-Diketiminate Complexes: Initiators, Ligand Steric Effects, and Deactivation Processes in the Controlled Radical Polymerization of Vinyl Acetate
Champouret, Yohan; MacLeod, K. Cory; Baisch, Ulrich; Patrick, Brian O.; Smith, Kevin M.; Poli, Rinaldo; Organometallics 29 (2010) 167–; doi:10.1021/om900869p

data_4067333
_publ_section_title
;
 Cyclopentadienyl Chromium \b-Diketiminate Complexes: Initiators, Ligand
 Steric Effects, and Deactivation Processes in the Controlled Radical
 Polymerization of Vinyl Acetate
;
_journal_issue                   1
_journal_name_full               Organometallics
_journal_page_first              167
_journal_paper_doi               10.1021/om900869p
_journal_volume                  29
_journal_year                    2010
_chemical_formula_sum            'C28 H34 Cr N2'
_chemical_formula_weight         450.57
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           15
_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                 101.508(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   16.4341(19)
_cell_length_b                   9.3651(11)
_cell_length_c                   16.498(2)
_cell_measurement_reflns_used    4206
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.20
_cell_measurement_theta_min      2.69
_cell_volume                     2488.1(5)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173.0(1)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_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  0.0336
_diffrn_reflns_av_sigmaI/netI    0.0318
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            12389
_diffrn_reflns_theta_full        28.03
_diffrn_reflns_theta_max         28.03
_diffrn_reflns_theta_min         2.52
_exptl_absorpt_coefficient_mu    0.476
_exptl_absorpt_correction_T_max  0.954
_exptl_absorpt_correction_T_min  0.869
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.203
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             960
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.689
_refine_diff_density_min         -0.362
_refine_diff_density_rms         0.063
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.084
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     146
_refine_ls_number_reflns         2989
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.084
_refine_ls_R_factor_all          0.0610
_refine_ls_R_factor_gt           0.0506
_refine_ls_shift/su_max          0.008
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0474P)^2^+6.8179P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1305
_refine_ls_wR_factor_ref         0.1358
_reflns_number_gt                2536
_reflns_number_total             2989
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om900869p_si_001.cif
_cod_data_source_block           2_ks073
_cod_original_cell_volume        2488.2(5)
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               4067333