Mono N,C,N-pincer complexes of titanium, vanadium and niobium. Synthesis, structure and catalytic activity in olefin polymerisation.
Chuchuryukin, Alexey V.; Huang, Rubin; van Faassen, Ernst E.; van Klink, Gerard P. M.; Lutz, Martin; Chadwick, John C.; Spek, Anthony L.; van Koten, Gerard; Dalton transactions (Cambridge, England : 2003) 40 (2011) 8887–8895; doi:10.1039/c1dt10482a

data_7016428
_publ_section_title
;
 Mono N,C,N-pincer complexes of titanium, vanadium and niobium.
 Synthesis, structure and catalytic activity in olefin polymerisation.
;
_journal_issue                   35
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              8887
_journal_page_last               8895
_journal_paper_doi               10.1039/c1dt10482a
_journal_volume                  40
_journal_year                    2011
_chemical_formula_moiety         'C12 H19 Cl2 N2 V, C6 H6'
_chemical_formula_sum            'C18 H25 Cl2 N2 V'
_chemical_formula_weight         391.24
_chemical_name_systematic
;
?
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 98.975(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.1127(3)
_cell_length_b                   16.9371(7)
_cell_length_c                   14.3078(4)
_cell_measurement_reflns_used    12849
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.50
_cell_measurement_theta_min      2.40
_cell_volume                     1941.90(12)
_computing_cell_refinement       Peakref
_computing_data_collection       'Nonius COLLECT'
_computing_data_reduction        'EvalCCD, Sadabs'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0431
_diffrn_reflns_av_sigmaI/netI    0.0213
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            19466
_diffrn_reflns_theta_full        27.51
_diffrn_reflns_theta_max         27.51
_diffrn_reflns_theta_min         2.41
_exptl_absorpt_coefficient_mu    0.786
_exptl_absorpt_correction_T_max  0.93
_exptl_absorpt_correction_T_min  0.57
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   Sadabs
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.338
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             816
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.683
_refine_diff_density_min         -0.289
_refine_diff_density_rms         0.054
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.064
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     156
_refine_ls_number_reflns         2240
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.064
_refine_ls_R_factor_all          0.0377
_refine_ls_R_factor_gt           0.0290
_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^)+(0.0309P)^2^+2.4050P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0693
_refine_ls_wR_factor_ref         0.0734
_reflns_number_gt                1926
_reflns_number_total             2240
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            c1dt10482a.txt
_cod_data_source_block           s3665a
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               7016428