Novel zirconium complexes with constrained cyclic β-enaminoketonato ligands: improved catalytic capability toward ethylene polymerization.
Wang, Kai-Ti; Wang, Yong-Xia; Wang, Bin; Li, Yan-Guo; Li, Yue-Sheng; Dalton transactions (Cambridge, England : 2003) 45 (2016) 10308–10318; doi:10.1039/c6dt01391k

data_7039300
_publ_section_title
;
 Novel zirconium complexes with constrained cyclic \b-enaminoketonato
 ligands: improved catalytic capability toward ethylene polymerization.
;
_journal_issue                   25
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              10308
_journal_page_last               10318
_journal_paper_doi               10.1039/c6dt01391k
_journal_volume                  45
_journal_year                    2016
_chemical_formula_sum            'C60 H50 N2 O2 Zr'
_chemical_formula_weight         922.24
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2015-08-17 deposited with the CCDC.
2016-05-17 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 91.370(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.2590(10)
_cell_length_b                   24.229(2)
_cell_length_c                   17.8544(15)
_cell_measurement_temperature    185(2)
_cell_volume                     4869.2(7)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      185(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker SMART CCD 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  0.0000
_diffrn_reflns_av_sigmaI/netI    0.1222
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       28
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            8618
_diffrn_reflns_theta_full        25.06
_diffrn_reflns_theta_max         25.06
_diffrn_reflns_theta_min         1.42
_exptl_absorpt_coefficient_mu    0.271
_exptl_absorpt_correction_T_max  0.952
_exptl_absorpt_correction_T_min  0.931
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.258
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1920
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.502
_refine_diff_density_min         -0.399
_refine_diff_density_rms         0.079
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.010
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     586
_refine_ls_number_reflns         8618
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.010
_refine_ls_R_factor_all          0.1189
_refine_ls_R_factor_gt           0.0711
_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^)+(0.0439P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1215
_refine_ls_wR_factor_ref         0.1363
_reflns_number_gt                5461
_reflns_number_total             8618
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c6dt01391k2.cif
_cod_data_source_block           5b
_cod_depositor_comments
'Adding full bibliography for 7039299--7039302.cif.'
_cod_original_cell_volume        4869.3(7)
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               7039300