Coordination chemistry of new selective ethylene trimerisation ligand Ph2PN(iPr)P(Ph)NH(R) (R = iPr, Et) and tests in catalysis.
Aluri, Bhaskar Reddy; Peulecke, Normen; Peitz, Stephan; Spannenberg, Anke; Müller, Bernd H; Schulz, Stefan; Drexler, Hans-Joachim; Heller, Detlef; Al-Hazmi, Mohammed H; Mosa, Fuad M.; Wöhl, Anina; Müller, Wolfgang; Rosenthal, Uwe; Dalton transactions (Cambridge, England : 2003) 39 (2010) 7911–7920; doi:10.1039/c0dt00440e

data_7026453
_publ_section_title
;
 Coordination chemistry of new selective ethylene trimerisation ligand
 Ph2PN(iPr)P(Ph)NH(R) (R = iPr, Et) and tests in catalysis.
;
_journal_issue                   34
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              7911
_journal_page_last               7920
_journal_paper_doi               10.1039/c0dt00440e
_journal_volume                  39
_journal_year                    2010
_chemical_formula_sum            'C51 H67 N4 Ni P4'
_chemical_formula_weight         918.68
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                89.596(4)
_cell_angle_beta                 87.817(4)
_cell_angle_gamma                69.521(4)
_cell_formula_units_Z            2
_cell_length_a                   10.8037(6)
_cell_length_b                   11.7151(6)
_cell_length_c                   21.2583(10)
_cell_measurement_reflns_used    3783
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      25.24
_cell_measurement_theta_min      2.06
_cell_volume                     2518.7(2)
_computing_cell_refinement       X-AREA
_computing_data_collection       'X-AREA (Stoe & Cie, 2005)'
_computing_data_reduction        X-AREA
_computing_molecular_graphics    'XP in SHELXTL'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'STOE IPDS II'
_diffrn_measurement_method       \w
_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  0.0544
_diffrn_reflns_av_sigmaI/netI    0.1029
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            30124
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         1.86
_exptl_absorpt_coefficient_mu    0.549
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.211
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             978
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.382
_refine_diff_density_min         -0.230
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.783
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     547
_refine_ls_number_reflns         9886
_refine_ls_number_restraints     27
_refine_ls_restrained_S_all      0.783
_refine_ls_R_factor_all          0.0813
_refine_ls_R_factor_gt           0.0371
_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^)+(0.0290P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0679
_refine_ls_wR_factor_ref         0.0739
_reflns_number_gt                5604
_reflns_number_total             9886
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0dt00440e.txt
_cod_data_source_block           6
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7026453