Reactions between an Ethylene Oligomerization Chromium(III) Precatalyst and Aluminum-Based Activators: Alkyl and Cationic Complexes with a Tridentate NPN Ligand
Liu, Shaofeng; Pattacini, Roberto; Braunstein, Pierre; Organometallics 30 (2011) 3549–; doi:10.1021/om200243a

data_4064651
_publ_section_title
;
 Reactions between an Ethylene Oligomerization Chromium(III) Precatalyst
 and Aluminum-Based Activators: Alkyl and Cationic Complexes with a
 Tridentate NPN Ligand
;
_journal_issue                   13
_journal_name_full               Organometallics
_journal_page_first              3549
_journal_paper_doi               10.1021/om200243a
_journal_volume                  30
_journal_year                    2011
_chemical_formula_moiety         'C20 H22 Cl2 Cr N2 P'
_chemical_formula_sum            'C20 H22 Cl2 Cr N2 P'
_chemical_formula_weight         444.27
_space_group_IT_number           14
_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   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 120.514(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.8957(7)
_cell_length_b                   12.4712(9)
_cell_length_c                   15.7046(8)
_cell_measurement_reflns_used    4264
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.103
_cell_measurement_theta_min      0.998
_cell_volume                     2007.2(2)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Bruker AXS BV, 1997-2004)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics    ORTEP
_computing_publication_material  PLATON
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device       '95mm CCD camera on \k-goniostat'
_diffrn_measurement_device_type  KappaCCD
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0304
_diffrn_reflns_av_sigmaI/netI    0.0506
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            6681
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         2.22
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.922
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    1.470
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             916
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.625
_refine_diff_density_min         -0.544
_refine_diff_density_rms         0.080
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.072
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     238
_refine_ls_number_reflns         3937
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.076
_refine_ls_R_factor_all          0.0688
_refine_ls_R_factor_gt           0.0460
_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^)+(0.0643P)^2^+0.6866P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1149
_refine_ls_wR_factor_ref         0.1229
_reflns_number_gt                2942
_reflns_number_total             3937
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om200243a_si_001.cif
_cod_data_source_block           compound4
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4064651