Titanoxycarbene complexes of Ti(iv) with O- and N-donor ligands
Nogai, Stefan D.; Schuster, Oliver; Bruce, Jocelyn; Raubenheimer, Helgard G.; New Journal of Chemistry 32 (2008) 540–; doi:10.1039/b715075j

data_7051826
_publ_section_title
;
 Titanoxycarbene complexes of Ti(iv) with O- and N-donor ligands
;
_journal_issue                   3
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              540
_journal_paper_doi               10.1039/b715075j
_journal_volume                  32
_journal_year                    2008
_chemical_formula_moiety         'C32 H48 Cr2 O18 Ti2'
_chemical_formula_sum            'C32 H48 Cr2 O18 Ti2'
_chemical_formula_weight         920.50
_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                87.7710(10)
_cell_angle_beta                 67.0230(10)
_cell_angle_gamma                70.1630(10)
_cell_formula_units_Z            1
_cell_length_a                   10.4677(6)
_cell_length_b                   10.9006(6)
_cell_length_c                   11.5402(7)
_cell_measurement_reflns_used    4538
_cell_measurement_temperature    213(2)
_cell_measurement_theta_max      2.26
_cell_measurement_theta_min      26.08
_cell_volume                     1133.70(11)
_computing_cell_refinement       'SAINT (Bruker, 2002)'
_computing_data_collection       'SMART (Bruker, 2001)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    SHELXTL-PLUS
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      213(2)
_diffrn_measured_fraction_theta_full 0.976
_diffrn_measured_fraction_theta_max 0.976
_diffrn_measurement_device_type  'Bruker APEX CCD area-detector'
_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  0.0147
_diffrn_reflns_av_sigmaI/netI    0.0232
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            8280
_diffrn_reflns_theta_full        26.11
_diffrn_reflns_theta_max         26.11
_diffrn_reflns_theta_min         1.93
_exptl_absorpt_coefficient_mu    0.870
_exptl_absorpt_correction_T_max  0.8452
_exptl_absorpt_correction_T_min  0.7163
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS, Blessing, Acta Cryst. A51 (1995) 33-38'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.348
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             476
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.352
_refine_diff_density_min         -0.186
_refine_diff_density_rms         0.049
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.041
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     320
_refine_ls_number_reflns         4401
_refine_ls_number_restraints     11
_refine_ls_restrained_S_all      1.043
_refine_ls_R_factor_all          0.0375
_refine_ls_R_factor_gt           0.0333
_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^)+(0.0583P)^2^+0.1961P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0924
_refine_ls_wR_factor_ref         0.0961
_reflns_number_gt                3895
_reflns_number_total             4401
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b715075j.txt
_cod_data_source_block           '[{(OC)5Cr=C(Me)OTi(OiPr)2}(OiPr)]2'
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7051826