Chemical functionality of poly(methylenephosphine): phosphine–borane adducts and methylphosphonium ionomers
Noonan, Kevin J. T.; Feldscher, Bastian; Bates, Joshua I.; Kingsley, Justin J.; Yam, Mandy; Gates, Derek P.; Dalton Transactions  (2008) 4451–4457; doi:10.1039/b718140j

data_7003660
_publ_section_title
;
 Chemical functionality of poly(methylenephosphine): phosphine--borane
 adducts and methylphosphonium ionomers
;
_journal_issue                   33
_journal_name_full               'Dalton Transactions'
_journal_page_first              4451
_journal_page_last               4457
_journal_paper_doi               10.1039/b718140j
_journal_year                    2008
_chemical_formula_moiety         'C25 H34 B P Si'
_chemical_formula_sum            'C25 H34 B P Si'
_chemical_formula_weight         404.39
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                108.324(5)
_cell_angle_beta                 93.499(5)
_cell_angle_gamma                117.089(5)
_cell_formula_units_Z            2
_cell_length_a                   10.128(5)
_cell_length_b                   10.750(5)
_cell_length_c                   12.890(5)
_cell_measurement_reflns_used    5485
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      28.0
_cell_measurement_theta_min      1.7
_cell_volume                     1151.0(9)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device_type  'Bruker X8 APEX 2'
_diffrn_measurement_method       'area detector'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0285
_diffrn_reflns_av_sigmaI/netI    0.0267
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            23770
_diffrn_reflns_theta_full        27.99
_diffrn_reflns_theta_max         27.99
_diffrn_reflns_theta_min         1.71
_exptl_absorpt_coefficient_mu    0.180
_exptl_absorpt_correction_T_max  0.982
_exptl_absorpt_correction_T_min  0.889
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.167
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       irregular
_exptl_crystal_F_000             436
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.438
_refine_diff_density_min         -0.207
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.041
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     389
_refine_ls_number_reflns         5485
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.041
_refine_ls_R_factor_all          0.0452
_refine_ls_R_factor_gt           0.0363
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0473P)^2^+0.4144P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0914
_refine_ls_wR_factor_ref         0.0968
_reflns_number_gt                4637
_reflns_number_total             5485
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b718140j.txt
_cod_data_source_block           dg057
_cod_database_code               7003660