Synthesis of [(π-cyano-P-nacnac)Cp] and [(π-cyano-nacnac)Cp]-zirconium complexes, and their remote activation for ethylene polymerization.
Rojas, Rene S.; Cabrera, Alan R.; Peoples, Brian C.; Spannhoff, Kirsten; Valderrama, Mauricio; Fröhlich, Roland; Kehr, Gerald; Erker, Gerhard; Dalton transactions (Cambridge, England : 2003) 41 (2012) 1243–1251; doi:10.1039/c1dt11261a

data_7017621
_publ_section_title
;
 Synthesis of [(\p-cyano-P-nacnac)Cp] and [(\p-cyano-nacnac)Cp]-zirconium
 complexes, and their remote activation for ethylene polymerization.
;
_journal_issue                   4
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              1243
_journal_page_last               1251
_journal_paper_doi               10.1039/c1dt11261a
_journal_volume                  41
_journal_year                    2012
_chemical_formula_sum            'C45 H39 Cl6 N3 P2 Zr'
_chemical_formula_weight         987.65
_chemical_name_systematic
;
?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_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                 98.196(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.2317(2)
_cell_length_b                   22.4233(4)
_cell_length_c                   20.5016(5)
_cell_measurement_reflns_used    8822
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      27.88
_cell_measurement_theta_min      4.08
_cell_volume                     4655.61(17)
_computing_cell_refinement       'Collect (Nonius B.V., 1998)'
_computing_data_collection       'Collect (Nonius B.V., 1998)'
_computing_data_reduction        'Denzo-SNM (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'XP (BrukerAXS, 2000)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      223(2)
_diffrn_measured_fraction_theta_full 0.975
_diffrn_measured_fraction_theta_max 0.975
_diffrn_measurement_device_type  'Nonius KappaCCD APEXII'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'Montel mirror'
_diffrn_radiation_source         'rotating anode Nonius FR591'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.051
_diffrn_reflns_av_sigmaI/netI    0.0486
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       -29
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            26608
_diffrn_reflns_theta_full        27.87
_diffrn_reflns_theta_max         27.87
_diffrn_reflns_theta_min         4.08
_exptl_absorpt_coefficient_mu    0.684
_exptl_absorpt_correction_T_max  0.9537
_exptl_absorpt_correction_T_min  0.8754
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'Denzo (Otwinowski, Borek, Majewski & Minor, 2003)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.409
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2008
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.07
_platon_squeeze_details
;
;
_refine_diff_density_max         1.115
_refine_diff_density_min         -0.865
_refine_diff_density_rms         0.092
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.051
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     514
_refine_ls_number_reflns         10825
_refine_ls_number_restraints     43
_refine_ls_restrained_S_all      1.087
_refine_ls_R_factor_all          0.0977
_refine_ls_R_factor_gt           0.0799
_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^)+(0.0723P)^2^+14.0648P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1864
_refine_ls_wR_factor_ref         0.1991
_reflns_number_gt                8637
_reflns_number_total             10825
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c1dt11261a.txt
_cod_data_source_block           erk5967
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               7017621