One-Step Redox Route to N-Heterocyclic Phosphenium Ions
Gregor Reeske; Alan H. Cowley; Inorganic Chemistry 46 (2007) 1426–1430; doi:10.1021/ic061956z

data_4307480
_publ_contact_author_address
;
   Department of Chemistry and Biochemistry
   University of Texas-Austin
   1 University Station, A5300
   Austin, TX 78701
   USA 
;
_publ_contact_author_email       cowley@mail.utexas.edu
_publ_contact_author_fax         512-471-6822
_publ_contact_author_name
;
Alan H. Cowley
;
_publ_contact_author_phone       512-471-7710
_publ_section_title
;
One-Step Redox Route to N-Heterocyclic Phosphenium Ions
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              1426
_journal_page_last               1430
_journal_paper_doi               10.1021/ic061956z
_journal_volume                  46
_journal_year                    2007
_chemical_formula_moiety         'C26 H36 N2 P, C24 H20 B'
_chemical_formula_sum            'C50 H56 B N2 P'
_chemical_formula_weight         726.75
_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   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.000
_cell_angle_beta                 91.069(5)
_cell_angle_gamma                90.000
_cell_formula_units_Z            8
_cell_length_a                   20.593(5)
_cell_length_b                   17.637(5)
_cell_length_c                   23.597(5)
_cell_measurement_temperature    153(2)
_cell_volume                     8569(4)
_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       \f-scan
_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  0.0486
_diffrn_reflns_av_sigmaI/netI    0.0802
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            33860
_diffrn_reflns_theta_full        27.49
_diffrn_reflns_theta_max         27.49
_diffrn_reflns_theta_min         1.52
_exptl_absorpt_coefficient_mu    0.099
_exptl_absorpt_correction_T_max  0.9882
_exptl_absorpt_correction_T_min  0.9852
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'DENZO and Scalepack (Otwinoski and Minor, 1997)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.127
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             3120
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.327
_refine_diff_density_min         -0.322
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.014
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1005
_refine_ls_number_reflns         19610
_refine_ls_number_restraints     4
_refine_ls_restrained_S_all      1.014
_refine_ls_R_factor_all          0.1124
_refine_ls_R_factor_gt           0.0553
_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^)+(0.0458P)^2^+2.7220P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1102
_refine_ls_wR_factor_ref         0.1314
_reflns_number_gt                11896
_reflns_number_total             19610
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic061956zsi20061012_022712.cif
_cod_data_source_block           try1
_cod_original_sg_symbol_Hall     -p2ybc
_cod_database_code               4307480