Effect of peripheral donor substituents on the binding modes of phosphinomethanide ligands. Synthesis and crystal structures of alkali metal derivatives of an O-functionalised phosphinomethanide ligand.
Izod, Keith; Young, Jonathan; Clegg, William; Harrington, Ross W.; Dalton transactions (Cambridge, England : 2003)  (2005) 1658–1663; doi:10.1039/b502416a

data_7008406
_publ_section_title
;
 Effect of peripheral donor substituents on the binding modes of
 phosphinomethanide ligands. Synthesis and crystal structures of alkali
 metal derivatives of an O-functionalised phosphinomethanide ligand.
;
_journal_issue                   9
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              1658
_journal_page_last               1663
_journal_paper_doi               10.1039/b502416a
_journal_year                    2005
_chemical_formula_moiety         'C23 H37 O2 P Si2'
_chemical_formula_sum            'C23 H37 O2 P Si2'
_chemical_formula_weight         432.68
_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                73.502(1)
_cell_angle_beta                 86.635(1)
_cell_angle_gamma                77.341(1)
_cell_formula_units_Z            2
_cell_length_a                   7.2142(4)
_cell_length_b                   11.2764(6)
_cell_length_c                   16.3272(8)
_cell_measurement_reflns_used    7650
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      28.57
_cell_measurement_theta_min      2.60
_cell_volume                     1242.57(11)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker SMART'
_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      150(2)
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.904
_diffrn_measurement_device_type  'Bruker SMART 1K CCD diffractometer'
_diffrn_measurement_method       'thin-slice \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  0.0232
_diffrn_reflns_av_sigmaI/netI    0.0382
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            11239
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         28.77
_diffrn_reflns_theta_min         1.93
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.223
_exptl_absorpt_correction_T_max  0.916
_exptl_absorpt_correction_T_min  0.897
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.156
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             468
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.40
_refine_diff_density_max         0.317
_refine_diff_density_min         -0.192
_refine_diff_density_rms         0.047
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.037
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     261
_refine_ls_number_reflns         5839
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.037
_refine_ls_R_factor_all          0.0499
_refine_ls_R_factor_gt           0.0346
_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^)+(0.0467P)^2^+0.2510P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0868
_refine_ls_wR_factor_ref         0.0948
_reflns_number_gt                4611
_reflns_number_total             5839
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b502416a.txt
_cod_data_source_block           ki144_9
_cod_database_code               7008406