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_7026454
_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            'C25 H32 Cl4 N2 Ni P2'
_chemical_formula_weight         622.98
_chemical_name_systematic
;
?
;
_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                97.413(2)
_cell_angle_beta                 91.558(2)
_cell_angle_gamma                96.707(2)
_cell_formula_units_Z            4
_cell_length_a                   8.5768(2)
_cell_length_b                   18.4703(5)
_cell_length_c                   18.9358(5)
_cell_measurement_reflns_used    9128
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      29.62
_cell_measurement_theta_min      2.14
_cell_volume                     2951.58(13)
_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 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0337
_diffrn_reflns_av_sigmaI/netI    0.0474
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            49081
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.17
_exptl_absorpt_coefficient_mu    1.145
_exptl_absorpt_correction_T_max  0.7753
_exptl_absorpt_correction_T_min  0.6400
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'X-SHAPE and X-RED32 (Stoe & Cie, 2005)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.402
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1288
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.27
_refine_diff_density_max         1.080
_refine_diff_density_min         -0.860
_refine_diff_density_rms         0.057
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.867
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     589
_refine_ls_number_reflns         13536
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      0.891
_refine_ls_R_factor_all          0.0515
_refine_ls_R_factor_gt           0.0314
_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^)+(0.0425P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0709
_refine_ls_wR_factor_ref         0.0741
_reflns_number_gt                9487
_reflns_number_total             13536
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0dt00440e.txt
_cod_data_source_block           7
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7026454