New phenyl–nickel complexes of bulky 2-iminopyrrolyl chelates: synthesis, characterisation and application as aluminium-free catalysts for the production of hyperbranched polyethylene
Figueira, Cláudia A.; Lopes, Patrícia S.; Gomes, Clara S. B.; Gomes, Joselaine C. S.; Lemos, Francisco; Gomes, Pedro T.; Dalton Transactions  (2018) –; doi:10.1039/C8DT02824A

data_7047893
_publ_section_title
;
 New phenyl--nickel complexes of bulky 2-iminopyrrolyl chelates:
 synthesis, characterisation and application as aluminium-free catalysts
 for the production of hyperbranched polyethylene
;
_journal_name_full               'Dalton Transactions'
_journal_paper_doi               10.1039/C8DT02824A
_journal_year                    2018
_chemical_formula_moiety         'C19 H18 N2'
_chemical_formula_sum            'C19 H18 N2'
_chemical_formula_weight         274.35
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2014
_audit_update_record
;
2018-09-05 deposited with the CCDC.
2018-09-06 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 101.881(6)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   14.8246(15)
_cell_length_b                   13.5546(15)
_cell_length_c                   15.4910(16)
_cell_measurement_reflns_used    5585
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      29.07
_cell_measurement_theta_min      2.62
_cell_volume                     3046.1(6)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    ORTEP
_computing_publication_material  enCIFer
_computing_structure_refinement  'SHELXL-2014 (Sheldrick, 2014)'
_computing_structure_solution    SIR2004
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0483
_diffrn_reflns_av_unetI/netI     0.0339
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            54156
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         29.101
_diffrn_reflns_theta_min         2.293
_diffrn_source                   'sealed tube'
_exptl_absorpt_coefficient_mu    0.071
_exptl_absorpt_correction_T_max  0.983
_exptl_absorpt_correction_T_min  0.966
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.196
_exptl_crystal_description       Prism
_exptl_crystal_F_000             1168
_exptl_crystal_size_max          0.500
_exptl_crystal_size_mid          0.300
_exptl_crystal_size_min          0.250
_refine_diff_density_max         0.256
_refine_diff_density_min         -0.265
_refine_diff_density_rms         0.050
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.061
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     391
_refine_ls_number_reflns         8139
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.061
_refine_ls_R_factor_all          0.0705
_refine_ls_R_factor_gt           0.0454
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0712P)^2^+0.1663P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1166
_refine_ls_wR_factor_ref         0.1272
_reflns_Friedel_coverage         0.000
_reflns_number_gt                5972
_reflns_number_total             8139
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8dt02824a2.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7047893
_shelx_estimated_absorpt_t_min   0.966
_shelx_estimated_absorpt_t_max   0.983
_shelxl_version_number           2014-3
_shelx_res_checksum              26417