Heavier Alkali Metal Complexes of a Silicon- and Phosphine-Borane-Stabilized Carbanion
Izod, Keith; Wills, Corinne; Clegg, William; Harrington, Ross W.; Organometallics 25 (2006) 5326–; doi:10.1021/om0606082

data_4074384
_publ_section_title
;
 Heavier Alkali Metal Complexes of a Silicon- and
 Phosphine-Borane-Stabilized Carbanion
;
_journal_issue                   22
_journal_name_full               Organometallics
_journal_page_first              5326
_journal_paper_doi               10.1021/om0606082
_journal_volume                  25
_journal_year                    2006
_chemical_formula_moiety         'C9 H28 B P Si2'
_chemical_formula_sum            'C9 H28 B P Si2'
_chemical_formula_weight         234.27
_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   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 106.193(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.7346(6)
_cell_length_b                   14.7363(10)
_cell_length_c                   12.2135(8)
_cell_measurement_reflns_used    5327
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      28.6
_cell_measurement_theta_min      2.70
_cell_volume                     1509.70(18)
_computing_cell_refinement       'Bruker APEX2'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL and local programs'
_computing_structure_refinement  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 0.981
_diffrn_measured_fraction_theta_max 0.962
_diffrn_measurement_device_type  'Bruker APEX2 CCD diffractometer'
_diffrn_measurement_method       'thin-slice \w scans'
_diffrn_radiation_monochromator  'silicon 111'
_diffrn_radiation_source         'Daresbury SRS station 9.8'
_diffrn_radiation_type           synchrotron
_diffrn_radiation_wavelength     0.6709
_diffrn_reflns_av_R_equivalents  0.0225
_diffrn_reflns_av_sigmaI/netI    0.0276
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            11829
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         28.65
_diffrn_reflns_theta_min         2.75
_diffrn_standards_decay_%        10
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.307
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.031
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             520
_exptl_crystal_size_max          0.02
_exptl_crystal_size_mid          0.02
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.693
_refine_diff_density_min         -0.369
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.038
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     139
_refine_ls_number_reflns         4448
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.038
_refine_ls_R_factor_all          0.0476
_refine_ls_R_factor_gt           0.0366
_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^)+(0.0665P)^2^+0.2539P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0996
_refine_ls_wR_factor_ref         0.1064
_reflns_number_gt                3668
_reflns_number_total             4448
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            om0606082si20060705_103118.cif
_cod_data_source_block           5
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4074384