A β-diketiminato hydroxyphosphenium cation: phosphinous acid–secondary phosphine oxidetautomerism revisited
Lu, Zheng; Findlater, Michael; Cowley, Alan H.; Chemical Communications (Cambridge, United Kingdom)  (2008) 184–186; doi:10.1039/b716389d

data_7102810
_publ_section_title
;
 A \b-diketiminato hydroxyphosphenium cation: phosphinous
 acid--secondary phosphine oxidetautomerism revisited
;
_journal_coden_ASTM              CHCOFS
_journal_issue                   2
_journal_name_full
;
 Chemical Communications (Cambridge, United Kingdom)
;
_journal_page_first              184
_journal_page_last               186
_journal_paper_doi               10.1039/b716389d
_journal_year                    2008
_chemical_formula_moiety         'C30 H44 N2 O P, Br'
_chemical_formula_sum            'C30 H44 Br N2 O P'
_chemical_formula_weight         559.55
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method
;
manual editing of the .cif file
created by SHELXTL Ver. 6.10
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   16.119(3)
_cell_length_b                   14.615(3)
_cell_length_c                   25.530(5)
_cell_measurement_temperature    153(2)
_cell_volume                     6014(2)
_computing_cell_refinement       'Collect software, Nonius B.V. 1998'
_computing_data_collection       'Collect software, Nonius B.V. 1998'
_computing_data_reduction
;
DENZO and Scalepack (Otwinoski and Minor, 1997)
;
_computing_molecular_graphics    'XP SHELXTL/PC, Siemens Analytical'
_computing_structure_refinement  'XL SHELXTL/PC, Siemens Analytical'
_computing_structure_solution
;
SIR97 - Altomare A., Burla M.C., Camalli M., Cascarano G.L., Giacovazzo C.,
Guagliardi A., Moliterni A.G.G., Polidori G.,Spagna R.
;
_diffrn_ambient_temperature      153(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_diffrn_measurement_method       \w-scan
_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  0.3074
_diffrn_reflns_av_sigmaI/netI    0.3018
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       33
_diffrn_reflns_limit_l_min       -33
_diffrn_reflns_number            21481
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.60
_exptl_absorpt_coefficient_mu    1.444
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.236
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2368
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.2
_refine_diff_density_max         1.205
_refine_diff_density_min         -0.743
_refine_diff_density_rms         0.257
_refine_ls_extinction_coef       0.0139(10)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.988
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     328
_refine_ls_number_reflns         6888
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.988
_refine_ls_R_factor_all          0.2696
_refine_ls_R_factor_gt           0.0915
_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^)+(0.1054P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1908
_refine_ls_wR_factor_ref         0.2915
_reflns_number_gt                2332
_reflns_number_total             6888
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b716389d.txt
_cod_data_source_block           new
_cod_original_sg_symbol_Hall     -p_2ac_2ab
_cod_original_sg_symbol_H-M      pbca
_cod_database_code               7102810