Chiral Naphthyl-α-diimine Nickel(II) Catalysts Bearingsec-Phenethyl Groups: Chain-Walking Polymerization of Ethylene at High Temperature and Stereoselective Polymerization of Methyl Methacrylate at Low Temperature
Yuan, Jianchao; Wang, Fuzhou; Xu, Weibing; Mei, Tongjian; Li, Jing; Yuan, Bingnian; Song, Fengying; Jia, Zong; Organometallics 32 (2013) 3960–; doi:10.1021/om400433t

data_4081087
_publ_section_title
;
 Chiral Naphthyl-\a-diimine Nickel(II) Catalysts Bearingsec-Phenethyl
 Groups: Chain-Walking Polymerization of Ethylene at High Temperature and
 Stereoselective Polymerization of Methyl Methacrylate at Low Temperature
;
_journal_issue                   14
_journal_name_full               Organometallics
_journal_page_first              3960
_journal_paper_doi               10.1021/om400433t
_journal_volume                  32
_journal_year                    2013
_chemical_formula_moiety         'C34 H24 Br2 N2 Ni'
_chemical_formula_sum            'C34 H24 Br2 N2 Ni'
_chemical_formula_weight         679.08
_space_group_crystal_system      monoclinic
_space_group_IT_number           13
_space_group_name_Hall           '-P 2yac'
_space_group_name_H-M_alt        'P 1 2/n 1'
_symmetry_space_group_name_Hall  '-P 2yac'
_symmetry_space_group_name_H-M   'P 1 2/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2013-05-20
_audit_creation_method
;
  Olex2 1.2
  (compiled Apr 23 2013 17:54:37, GUI svn.r4466)
;
_audit_update_record
;
2013-05-21 # Formatted by publCIF
;
_cell_angle_alpha                90.00
_cell_angle_beta                 97.964(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.646(4)
_cell_length_b                   11.889(5)
_cell_length_c                   14.387(6)
_cell_measurement_reflns_used    2710
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      22.46
_cell_measurement_theta_min      2.23
_cell_volume                     1634.0(12)
_computing_molecular_graphics
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_publication_material
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_structure_refinement
;
SHELXL, G.M. Sheldrick, Acta Cryst.
(2008). A64, 112-122
;
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296.15
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0396
_diffrn_reflns_av_unetI/netI     0.0462
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            11489
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         2.23
_diffrn_source                   'fine-focus sealed tube'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    3.062
_exptl_absorpt_correction_T_max  0.5939
_exptl_absorpt_correction_T_min  0.5149
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.380
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             680
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.19
_platon_squeeze_details
;
;
_refine_diff_density_max         0.443
_refine_diff_density_min         -0.317
_refine_diff_density_rms         0.061
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.955
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     179
_refine_ls_number_reflns         3048
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.955
_refine_ls_R_factor_all          0.0658
_refine_ls_R_factor_gt           0.0358
_refine_ls_shift/su_max          0.000
_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          0.0763
_refine_ls_wR_factor_ref         0.0827
_reflns_number_gt                2026
_reflns_number_total             3048
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om400433t_si_002.cif
_cod_data_source_block           2d
_cod_original_cell_volume        1634.0(11)
_cod_database_code               4081087
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C4(H4), C5(H5), C7(H7), C8(H8), C14(H14), C15(H15), C16(H16)
2.b Idealised Me refined as rotating group:
 C11(H11A,H11B,H11C)
;