σ-Silane, Disilanyl, and [W(μ-H)Si(μ-H)W] Bridging Silylene Complexes via the Reactions of W(PMe3)4(η(2)-CH2PMe2)H with Phenylsilanes.
Zuzek, Ashley A.; Neary, Michelle C.; Parkin, Gerard; Journal of the American Chemical Society  (2014) 141217070549000–; doi:10.1021/ja510703s

data_4123151
_publ_section_title
;
 \s-Silane, Disilanyl, and [W(\m-H)Si(\m-H)W] Bridging Silylene Complexes
 via the Reactions of W(PMe3)4(\h(2)-CH2PMe2)H with Phenylsilanes.
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              141217070549000
_journal_paper_doi               10.1021/ja510703s
_journal_year                    2014
_chemical_formula_sum            'C21 H43 P3 Si W'
_chemical_formula_weight         600.40
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 91.2340(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.5594(7)
_cell_length_b                   9.4055(7)
_cell_length_c                   29.378(2)
_cell_measurement_reflns_used    9768
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      30.60
_cell_measurement_theta_min      2.27
_cell_volume                     2640.8(3)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \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  0.0470
_diffrn_reflns_av_sigmaI/netI    0.0361
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       42
_diffrn_reflns_limit_l_min       -42
_diffrn_reflns_number            41910
_diffrn_reflns_theta_full        30.63
_diffrn_reflns_theta_max         30.63
_diffrn_reflns_theta_min         1.39
_exptl_absorpt_coefficient_mu    4.606
_exptl_absorpt_correction_T_max  0.7095
_exptl_absorpt_correction_T_min  0.4748
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.510
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1208
_exptl_crystal_size_max          0.19
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.08
_refine_diff_density_max         1.269
_refine_diff_density_min         -1.850
_refine_diff_density_rms         0.135
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.154
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     268
_refine_ls_number_reflns         8150
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.154
_refine_ls_R_factor_all          0.0487
_refine_ls_R_factor_gt           0.0382
_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^)+(0.0216P)^2^+5.0240P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0696
_refine_ls_wR_factor_ref         0.0724
_reflns_number_gt                6975
_reflns_number_total             8150
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja510703s_si_005.cif
_cod_data_source_block           wsiph2s10
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/home/saulius/struct/COD-crude-data--automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2935 2014-11-11 08:27:57Z andrius 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               4123151