Chemistry of the Oxophosphinidene Ligand. 1. Electronic Structure of the Anionic Complexes [MCp{P(O)R*}(CO)2]- (M = Mo, W; R* = 2,4,6-C6H2tBu3) and Their Reactions with H+ and C-Based Electrophiles.
María Alonso; M. Angeles Alvarez; M. Esther García; Daniel García-Vivó; Miguel A. Ruiz; Inorganic Chemistry 49 (2010) 8962–8976; doi:10.1021/ic101261f

data_4316624
_publ_section_title
;
 Chemistry of the Oxophosphinidene Ligand. 1. Electronic Structure of the
 Anionic Complexes [MCp{P(O)R*}(CO)2]- (M = Mo, W; R* = 2,4,6-C6H2tBu3)
 and Their Reactions with H+ and C-Based Electrophiles.
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              8962
_journal_page_last               8976
_journal_paper_doi               10.1021/ic101261f
_journal_volume                  49
_journal_year                    2010
_chemical_formula_sum            'C32 H39 Mo O4 P'
_chemical_formula_weight         614.54
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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            8
_cell_length_a                   17.1829(15)
_cell_length_b                   13.0958(11)
_cell_length_c                   27.663(2)
_cell_measurement_temperature    173(2)
_cell_volume                     6224.8(9)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_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  0.1215
_diffrn_reflns_av_sigmaI/netI    0.1646
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            18694
_diffrn_reflns_theta_full        27.52
_diffrn_reflns_theta_max         27.52
_diffrn_reflns_theta_min         2.79
_exptl_absorpt_coefficient_mu    0.505
_exptl_crystal_colour            Red
_exptl_crystal_density_diffrn    1.311
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             2560
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.523
_refine_diff_density_min         -0.480
_refine_diff_density_rms         0.089
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.944
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     412
_refine_ls_number_reflns         7123
_refine_ls_number_restraints     105
_refine_ls_restrained_S_all      0.954
_refine_ls_R_factor_all          0.1837
_refine_ls_R_factor_gt           0.0652
_refine_ls_shift/su_max          0.874
_refine_ls_shift/su_mean         0.018
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0454P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1084
_refine_ls_wR_factor_ref         0.1428
_reflns_number_gt                3146
_reflns_number_total             7123
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic101261f_si_002_4.cif
_cod_data_source_block           comp8d
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to the built-in table from CIF Core
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
;
_cod_database_code               4316624