Neutral and Zwitterionic Low-Coordinate Titanium Complexes Bearing the Terminal Phosphinidene Functionality. Structural, Spectroscopic, Theoretical, and Catalytic Studies Addressing the Ti-P Multiple Bond
Guangyu Zhao; Falguni Basuli; Uriah J. Kilgore; Hongjun Fan; Halikhedkar Aneetha; John C. Huffman; Gang Wu; Daniel J. Mindiola; Journal of the American Chemical Society 128 (2006) 13575–13585; doi:10.1021/ja064853o

data_4110972
_publ_section_title
;
 Neutral and Zwitterionic Low-Coordinate Titanium Complexes Bearing the
 Terminal Phosphinidene Functionality. Structural, Spectroscopic,
 Theoretical, and Catalytic Studies Addressing the Ti-P Multiple Bond
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              13575
_journal_page_last               13585
_journal_paper_doi               10.1021/ja064853o
_journal_volume                  128
_journal_year                    2006
_chemical_formula_moiety         'C51 H79 N2 P Ti'
_chemical_formula_sum            'C51 H79 N2 P Ti'
_chemical_formula_weight         799.03
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_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_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 102.302(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.104(2)
_cell_length_b                   21.191(4)
_cell_length_c                   21.135(4)
_cell_measurement_reflns_used    981
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.35
_cell_measurement_theta_min      3.69
_cell_volume                     4859.0(16)
_computing_cell_refinement       'SAINT (Bruker, 1999)'
_computing_data_collection       'SMART (Bruker, 1999)'
_computing_data_reduction        'SAINT (Bruker, 1999), XTEL (local program)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector                 'CCD area detector'
_diffrn_detector_area_resol_mean 44.52
_diffrn_detector_type            'Bruker SMART 6000'
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_details
'   0.30 degree frames measured for 10.17 seconds each'
_diffrn_measurement_device       'three-circle goniometer with fixed chi'
_diffrn_measurement_device_type  'Bruker Platform goniometer'
_diffrn_measurement_method       '\w scans'
_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  0.0868
_diffrn_reflns_av_sigmaI/netI    0.0902
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       27
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            34306
_diffrn_reflns_theta_full        27.55
_diffrn_reflns_theta_max         27.55
_diffrn_reflns_theta_min         2.11
_diffrn_standards_decay_%        0.0
_exptl_absorpt_coefficient_mu    0.242
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            'dark brown'
_exptl_crystal_density_diffrn    1.092
_exptl_crystal_description       multifacited
_exptl_crystal_F_000             1744
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.488
_refine_diff_density_min         -0.245
_refine_diff_density_rms         0.055
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.911
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     812
_refine_ls_number_reflns         11176
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.911
_refine_ls_R_factor_all          0.0815
_refine_ls_R_factor_gt           0.0442
_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^)+(0.0462P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0977
_refine_ls_wR_factor_ref         0.1097
_reflns_number_gt                7118
_reflns_number_total             11176
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja064853osi20060707_082910.cif
_cod_data_source_block           05090
_cod_original_cell_volume        4859.2(16)
_cod_original_sg_symbol_H-M      'P 1 21/n 1 '
_cod_database_code               4110972