NCN-Pincer Metal Complexes (Ti, Cr, V, Zr, Hf, and Nb) of the Phebox Ligand (S,S)-2,6-Bis(4′-isopropyl-2′-oxazolinyl)phenyl
Chuchuryukin, Alexey V.; Huang, Rubin; Lutz, Martin; Chadwick, John C.; Spek, Anthony L.; van Koten, Gerard; Organometallics 30 (2011) 2819–; doi:10.1021/om200170b

data_4064566
_publ_section_title
;
 NCN-Pincer Metal Complexes (Ti, Cr, V, Zr, Hf, and Nb) of the Phebox
 Ligand (S,S)-2,6-Bis(4&#x2032;-isopropyl-2&#x2032;-oxazolinyl)phenyl
;
_journal_issue                   10
_journal_name_full               Organometallics
_journal_page_first              2819
_journal_paper_doi               10.1021/om200170b
_journal_volume                  30
_journal_year                    2011
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C36 H46 Cl4 N4 Nb2 O6, C5 H12, C6 H6'
_chemical_formula_sum            'C47 H64 Cl4 N4 Nb2 O6'
_chemical_formula_weight         1108.64
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.1179(1)
_cell_length_b                   18.6083(1)
_cell_length_c                   24.8042(2)
_cell_measurement_reflns_used    73590
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      1.02
_cell_volume                     5131.62(7)
_computing_cell_refinement       HKL2000
_computing_data_collection       'Nonius COLLECT'
_computing_data_reduction        'HKL2000, Denzox, Sadabs'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR-97 (Altomare et al., 1997)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0481
_diffrn_reflns_av_sigmaI/netI    0.0319
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            84232
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.97
_exptl_absorpt_coefficient_mu    0.704
_exptl_absorpt_correction_T_max  0.94
_exptl_absorpt_correction_T_min  0.70
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   Sadabs
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.435
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             2288
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.713
_refine_diff_density_min         -0.392
_refine_diff_density_rms         0.062
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.01(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.032
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     622
_refine_ls_number_reflns         11772
_refine_ls_number_restraints     224
_refine_ls_restrained_S_all      1.027
_refine_ls_R_factor_all          0.0371
_refine_ls_R_factor_gt           0.0289
_refine_ls_shift/su_max          0.023
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0341P)^2^+2.1902P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0648
_refine_ls_wR_factor_ref         0.0679
_reflns_number_gt                10500
_reflns_number_total             11772
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            om200170b_si_001.cif
_cod_data_source_block           s3547a
_cod_database_code               4064566