Prototypical Phosphorus Analogues of Ethane: General and Versatile Synthetic Approaches to Hexaalkylated P-P Diphosphonium Cations
Jan J. Weigand; Susanne D. Riegel; Neil Burford; Andreas Decken; Journal of the American Chemical Society 129 (2007) 7969–7976; doi:10.1021/ja071306+

data_4111356
_publ_contact_author_address
;Department of Chemistry
University of New Brunswick
Fredericton, NB
E3B 6E2
Canada
;
_publ_contact_author_email       adecken@unb.ca
_publ_contact_author_fax         '(506) 453-4981'
_publ_contact_author_name        'Andreas Decken'
_publ_contact_author_phone       '(506) 453-4875'
_publ_section_title
;
 Prototypical Phosphorus Analogues of Ethane: General and Versatile
 Synthetic Approaches to Hexaalkylated P-P Diphosphonium Cations
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              7969
_journal_page_last               7976
_journal_paper_doi               10.1021/ja071306+
_journal_volume                  129
_journal_year                    2007
_chemical_formula_sum            'C12 H30 Cl8 Ga2 P2'
_chemical_formula_weight         659.34
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      33
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_atom_sites_solution_hydrogens   geom
_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            4
_cell_length_a                   17.749(2)
_cell_length_b                   10.2043(14)
_cell_length_c                   14.494(2)
_cell_measurement_reflns_used    7476
_cell_measurement_temperature    198(1)
_cell_measurement_theta_max      28.24
_cell_measurement_theta_min      2.30
_cell_volume                     2625.1(6)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      198(1)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0438
_diffrn_reflns_av_sigmaI/netI    0.0602
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            17073
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         27.49
_diffrn_reflns_theta_min         2.29
_diffrn_source                   'fine-focus sealed tube'
_diffrn_source_type              'Kristalloflex 760'
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    2.987
_exptl_absorpt_correction_T_max  0.6629
_exptl_absorpt_correction_T_min  0.5865
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1997b)'
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.668
_exptl_crystal_description       Irregular
_exptl_crystal_F_000             1320
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.830
_refine_diff_density_min         -0.424
_refine_diff_density_rms         0.105
_refine_ls_abs_structure_details
;
Flack H D (1983), Acta Cryst. A39, 876-881, 2496 Friedel pairs.
;
_refine_ls_abs_structure_Flack   0.036(11)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.990
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     227
_refine_ls_number_reflns         5590
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.990
_refine_ls_R_factor_all          0.0658
_refine_ls_R_factor_gt           0.0376
_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^)+(0.0350P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0762
_refine_ls_wR_factor_ref         0.0819
_reflns_number_gt                4174
_reflns_number_total             5590
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja071306si20070411_104706.cif
_cod_data_source_block           nb060511
_cod_original_cell_volume        2625.0(6)
_cod_database_code               4111356