Phosphido-Borane and Phosphido-Bis(Borane) Complexes of the Alkali Metals, a Comparative Study
Keith Izod; James M. Watson; William Clegg; Ross W. Harrington; Inorganic Chemistry 52 (2013) 1466–1475; doi:10.1021/ic302205b

data_4333712
_publ_section_title
;
 Phosphido-Borane and Phosphido-Bis(Borane) Complexes of the Alkali
 Metals, a Comparative Study
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              1466
_journal_page_last               1475
_journal_paper_doi               10.1021/ic302205b
_journal_volume                  52
_journal_year                    2013
_chemical_formula_moiety         'C21 H46 B2 K O2 P Si2'
_chemical_formula_sum            'C21 H46 B2 K O2 P Si2'
_chemical_formula_weight         478.45
_space_group_IT_number           56
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ab 2ac'
_symmetry_space_group_name_H-M   'P c c n'
_atom_sites_solution_hydrogens   mixed
_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                   8.6961(3)
_cell_length_b                   30.2919(11)
_cell_length_c                   23.9712(9)
_cell_measurement_reflns_used    10088
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      29.60
_cell_measurement_theta_min      2.97
_cell_volume                     6314.5(4)
_computing_cell_refinement
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.55 (release 05-01-2010 CrysAlis171 .NET)
(compiled Jan  5 2010,16:28:46)
;
_computing_data_collection
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.55 (release 05-01-2010 CrysAlis171 .NET)
(compiled Jan  5 2010,16:28:46)
;
_computing_data_reduction
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.55 (release 05-01-2010 CrysAlis171 .NET)
(compiled Jan  5 2010,16:28:46)
;
_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      150(2)
_diffrn_detector_area_resol_mean 10.3968
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type
'Oxford Diffraction Gemini A Ultra diffractometer'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  none
_diffrn_radiation_source         'sealed tube with Enhance optics'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0546
_diffrn_reflns_av_sigmaI/netI    0.0581
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       36
_diffrn_reflns_limit_k_min       -35
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            34085
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.21
_exptl_absorpt_coefficient_mu    0.308
_exptl_absorpt_correction_T_max  0.941
_exptl_absorpt_correction_T_min  0.927
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.55 (release 05-01-2010 CrysAlis171 .NET)
(compiled Jan  5 2010,16:28:46)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.007
_exptl_crystal_description       rod
_exptl_crystal_F_000             2080
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_platon_squeeze_details
; The void volume is appropriate for toluene (one molecule per void), 
but the electron count is too low, indicating facile loss of solvent
from the crystals before data collection.  Because the solvent can
not be identified confidently, it is not included in the chemical
formula or in properties derived from it (density, etc.).
;
_refine_diff_density_max         0.543
_refine_diff_density_min         -0.396
_refine_diff_density_rms         0.061
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.987
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     292
_refine_ls_number_reflns         5552
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.987
_refine_ls_R_factor_all          0.0802
_refine_ls_R_factor_gt           0.0512
_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^)+(0.0814P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1327
_refine_ls_wR_factor_ref         0.1397
_reflns_number_gt                3579
_reflns_number_total             5552
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ic302205b_si_001_8.cif
_cod_data_source_block           ki437_compound_18b
_cod_database_code               4333712