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_7047900
_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, C8 H11 N'
_chemical_formula_sum            'C27 H29 N3'
_chemical_formula_weight         395.53
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2018/1
_audit_update_record
;
2018-09-05 deposited with the CCDC.
2018-09-06 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 104.18(7)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   13.74(2)
_cell_length_b                   8.779(15)
_cell_length_c                   22.72(4)
_cell_measurement_reflns_used    971
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      17.73
_cell_measurement_theta_min      2.78
_cell_volume                     2657(8)
_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-2018/1 (Sheldrick, 2018)'
_computing_structure_solution    SIR92
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.931
_diffrn_measured_fraction_theta_max 0.931
_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  0.1789
_diffrn_reflns_av_unetI/netI     0.1712
_diffrn_reflns_Laue_measured_fraction_full 0.931
_diffrn_reflns_Laue_measured_fraction_max 0.931
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            19434
_diffrn_reflns_point_group_measured_fraction_full 0.931
_diffrn_reflns_point_group_measured_fraction_max 0.931
_diffrn_reflns_theta_full        25.026
_diffrn_reflns_theta_max         25.026
_diffrn_reflns_theta_min         2.808
_diffrn_source                   'sealed tube'
_exptl_absorpt_coefficient_mu    0.058
_exptl_absorpt_correction_T_max  0.996
_exptl_absorpt_correction_T_min  0.992
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    0.988
_exptl_crystal_description       Prism
_exptl_crystal_F_000             848
_exptl_crystal_size_max          0.140
_exptl_crystal_size_mid          0.100
_exptl_crystal_size_min          0.070
_refine_diff_density_max         0.508
_refine_diff_density_min         -0.438
_refine_diff_density_rms         0.060
_refine_ls_extinction_coef       0.023(4)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2018/1 (Sheldrick 2018)'
_refine_ls_goodness_of_fit_ref   0.866
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     276
_refine_ls_number_reflns         4378
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.867
_refine_ls_R_factor_all          0.2302
_refine_ls_R_factor_gt           0.0877
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1422P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2178
_refine_ls_wR_factor_ref         0.2684
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1610
_reflns_number_total             4378
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8dt02824a2.cif
_cod_data_source_block           IA
_cod_original_cell_volume        2658(8)
_cod_database_code               7047900
_shelx_shelxl_version_number     2018/1
_shelx_estimated_absorpt_t_min   0.992
_shelx_estimated_absorpt_t_max   0.996
_shelx_res_checksum              81989