The enhanced catalytic performance of cobalt catalysts towards butadiene polymerization by introducing a labile donor in a salen ligand.
Gong, Dirong; Wang, Baolin; Jia, Xiaoyu; Zhang, Xuequan; Dalton transactions (Cambridge, England : 2003) 43 (2014) 4169–4178; doi:10.1039/c3dt52708e

data_7028482
_publ_section_title
;
 The enhanced catalytic performance of cobalt catalysts towards butadiene
 polymerization by introducing a labile donor in a salen ligand.
;
_journal_issue                   10
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              4169
_journal_page_last               4178
_journal_paper_doi               10.1039/c3dt52708e
_journal_volume                  43
_journal_year                    2014
_chemical_formula_sum            'C28 H24 Co N2 O4'
_chemical_formula_weight         511.42
_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                 95.7840(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.8267(7)
_cell_length_b                   12.4005(7)
_cell_length_c                   14.4996(8)
_cell_measurement_temperature    296(2)
_cell_volume                     2294.5(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0367
_diffrn_reflns_av_sigmaI/netI    0.0449
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            12582
_diffrn_reflns_theta_full        26.14
_diffrn_reflns_theta_max         26.14
_diffrn_reflns_theta_min         1.60
_exptl_absorpt_coefficient_mu    0.787
_exptl_absorpt_correction_type   none
_exptl_crystal_density_diffrn    1.480
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1060.0
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.17
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.270
_refine_diff_density_min         -0.358
_refine_diff_density_rms         0.057
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.020
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     318
_refine_ls_number_reflns         4572
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.020
_refine_ls_R_factor_all          0.0542
_refine_ls_R_factor_gt           0.0355
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0407P)^2^+0.7376P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0833
_refine_ls_wR_factor_ref         0.0911
_reflns_number_gt                3527
_reflns_number_total             4572
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3dt52708e.txt
_cod_data_source_block           1
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               7028482