Ligand steric effects on α-diimine nickel catalyzed ethylene and 1-hexene polymerization
Sun, Jinlong; Wang, Fuzhou; Li, Weimin; Chen, Min; RSC Advances 7 (2017) 55051–; doi:10.1039/C7RA11783C

data_7229656
_publ_section_title
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 Ligand steric effects on \a-diimine nickel catalyzed ethylene and
 1-hexene polymerization
;
_journal_issue                   87
_journal_name_full               'RSC Advances'
_journal_page_first              55051
_journal_paper_doi               10.1039/C7RA11783C
_journal_volume                  7
_journal_year                    2017
_chemical_formula_sum            'C49 H49 Br2 N2 Ni'
_chemical_formula_weight         884.43
_chemical_name_systematic        '(i-PrN?N)NiBr2 '
_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
_audit_update_record
;
2017-09-23 deposited with the CCDC.
2017-11-28 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 115.936(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   25.465(2)
_cell_length_b                   17.0368(17)
_cell_length_c                   22.342(2)
_cell_measurement_reflns_used    7437
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      23.936
_cell_measurement_theta_min      2.396
_cell_volume                     8716.7(14)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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    0.1317
_diffrn_reflns_limit_h_max       30
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            15356
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         2.35
_exptl_absorpt_coefficient_mu    2.313
_exptl_absorpt_correction_T_max  0.7688
_exptl_absorpt_correction_T_min  0.5846
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.348
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             3640
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.12
_refine_diff_density_max         2.867
_refine_diff_density_min         -3.643
_refine_diff_density_rms         0.272
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.132
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     988
_refine_ls_number_reflns         15356
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.132
_refine_ls_R_factor_all          0.1844
_refine_ls_R_factor_gt           0.1324
_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^)+(0.2000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.3405
_refine_ls_wR_factor_ref         0.3770
_reflns_number_gt                7209
_reflns_number_total             15356
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c7ra11783c2.cif
_cod_data_source_block           170907g
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4973 2017-02-22 13:04:09Z antanas 
;
_cod_original_cell_volume        8716.6(14)
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7229656