Taking TiF4 complexes to extremes‒the first examples with phosphine co-ligands.
Jura, Marek; Levason, William; Petts, Edmund; Reid, Gillian; Webster, Michael; Zhang, Wenjian; Dalton transactions (Cambridge, England : 2003) 39 (2010) 10264–10271; doi:10.1039/c0dt00747a

data_7026819
_publ_section_title
;
 Taking TiF4 complexes to extremes--the first examples with phosphine
 co-ligands.
;
_journal_issue                   42
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              10264
_journal_page_last               10271
_journal_paper_doi               10.1039/c0dt00747a
_journal_volume                  39
_journal_year                    2010
_chemical_formula_moiety         'C8 H16 F4 O2 Ti'
_chemical_formula_sum            'C8 H16 F4 O2 Ti'
_chemical_formula_weight         268.11
_chemical_name_common            cis-tetrafluorobis(tetrahydrofuran)titanium(IV)
_chemical_name_systematic
;
cis-tetrafluorobis(tetrahydrofuran)titanium(IV)
;
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2009-01-10
_audit_creation_method           'SHELXL-97 + hand edit'
_cell_angle_alpha                90.00
_cell_angle_beta                 94.46(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.3523(15)
_cell_length_b                   11.003(3)
_cell_length_c                   15.840(3)
_cell_measurement_reflns_used    2606
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     1103.8(5)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device_type
'Bruker-Nonius 95mm CCD camera on \k-goniostat'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Bruker-Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0501
_diffrn_reflns_av_sigmaI/netI    0.0337
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            19259
_diffrn_reflns_theta_full        27.56
_diffrn_reflns_theta_max         27.56
_diffrn_reflns_theta_min         4.91
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.809
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.5815
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'G.M. Sheldrick, (2007). SADABS. Version 2007/2. Bruker AXS Inc.'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.613
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             552
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.254
_refine_diff_density_min         -0.435
_refine_diff_density_rms         0.062
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.060
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     136
_refine_ls_number_reflns         2516
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.060
_refine_ls_R_factor_all          0.0476
_refine_ls_R_factor_gt           0.0383
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0406P)^2^+0.9784P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0908
_refine_ls_wR_factor_ref         0.0958
_reflns_number_gt                2187
_reflns_number_total             2516
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            c0dt00747a.txt
_cod_data_source_block           08mj52
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7026819