Phosphine and Diphosphine Complexes of Silicon(IV) Halides
William Levason; David Pugh; Gillian Reid; Inorganic Chemistry 52 (2013) 5185–5193; doi:10.1021/ic400077z

data_4334662
_publ_contact_author_address
;   School of Chemistry
    University of Southampton
    Southampton SO17 1BJ, UK
;
_publ_contact_author_email       wxl@soton.ac.uk
_publ_contact_author_fax         '023 8059 3781'
_publ_contact_author_name        'Professor William Levason'
_publ_contact_author_phone       '023 8059 3792'
_publ_section_title
;
 Phosphine and Diphosphine Complexes of Silicon(IV) Halides
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              5185
_journal_page_last               5193
_journal_paper_doi               10.1021/ic400077z
_journal_volume                  52
_journal_year                    2013
_chemical_formula_moiety         'C6 H16 Br4 P2 Si'
_chemical_formula_sum            'C6 H16 Br4 P2 Si'
_chemical_formula_weight         497.86
_space_group_IT_number           88
_symmetry_cell_setting           tetragonal
_symmetry_Int_Tables_number      88
_symmetry_space_group_name_Hall  '-I 4ad'
_symmetry_space_group_name_H-M   'I 41/a :2'
_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                   11.285(3)
_cell_length_b                   11.285(3)
_cell_length_c                   23.543(10)
_cell_measurement_reflns_used    3625
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      31.3
_cell_measurement_theta_min      2.0
_cell_volume                     2998.2(17)
_computing_cell_refinement
;
CrystalClear-SM Expert 2.0 r11 (Rigaku, 2011)
;
_computing_data_collection
;
CrystalClear-SM Expert 2.0 r11 (Rigaku, 2011)
;
_computing_data_reduction
;
CrystalClear-SM Expert 2.0 r11 (Rigaku, 2011)
;
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 1997)'
_computing_publication_material
'PLATON (Spek, 2003), WinGX (Farrugia, 1999) and enCIFer (Allen et al., 2004).'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 CCD
_diffrn_detector_area_resol_mean 28.5714
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device
;
AFC12 (Right): Kappa 3 circle
;
_diffrn_measurement_device_type
;
Rigaku Saturn724+ (2x2 bin mode)
;
_diffrn_measurement_method       'profile data from \w-scans'
_diffrn_measurement_specimen_support Mitegen
_diffrn_radiation_monochromator  Confocal
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0251
_diffrn_reflns_av_sigmaI/netI    0.0341
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            3037
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         3.08
_diffrn_source                   'Rotating Anode'
_diffrn_source_current           55.0
_diffrn_source_power             2.5
_diffrn_source_voltage           45.0
_exptl_absorpt_coefficient_mu    10.996
_exptl_absorpt_correction_T_max  0.6094
_exptl_absorpt_correction_T_min  0.4377
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'CrystalClear-SM Expert 2.0 r11 (Rigaku, 2011)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.206
_exptl_crystal_description       block
_exptl_crystal_F_000             1888
_exptl_crystal_size_max          0.09
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.307
_refine_diff_density_min         -0.379
_refine_diff_density_rms         0.078
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.993
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     62
_refine_ls_number_reflns         1316
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.993
_refine_ls_R_factor_all          0.0237
_refine_ls_R_factor_gt           0.0196
_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^)+(0.0167P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0393
_refine_ls_wR_factor_ref         0.0402
_reflns_number_gt                1164
_reflns_number_total             1316
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ic400077z_si_002_05.cif
_cod_data_source_block           Compound_4
_cod_original_cell_volume        2998.1(18)
_cod_original_sg_symbol_H-M      'I 41/a'
_cod_database_code               4334662