Cyclotetraphosphinophosphonium Ions: Synthesis, Structures, and Pseudorotation
C. Adam Dyker; Susanne D. Riegel; Neil Burford; Michael D. Lumsden; Andreas Decken; Journal of the American Chemical Society 129 (2007) 7464–7474; doi:10.1021/ja070764f

data_4109501
_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
;
 Cyclotetraphosphinophosphonium Ions: Synthesis, Structures, and
 Pseudorotation
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              7464
_journal_page_last               7474
_journal_paper_doi               10.1021/ja070764f
_journal_volume                  129
_journal_year                    2007
_chemical_formula_sum            'C34 H34 Cl4 Ga P5'
_chemical_formula_weight         808.98
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_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                82.232(2)
_cell_angle_beta                 80.760(2)
_cell_angle_gamma                66.707(2)
_cell_formula_units_Z            2
_cell_length_a                   10.2161(12)
_cell_length_b                   11.7132(14)
_cell_length_c                   16.928(2)
_cell_measurement_reflns_used    5710
_cell_measurement_temperature    198(1)
_cell_measurement_theta_max      28.43
_cell_measurement_theta_min      2.19
_cell_volume                     1830.7(4)
_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 0.996
_diffrn_measured_fraction_theta_max 0.949
_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  0.0203
_diffrn_reflns_av_sigmaI/netI    0.0358
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            12860
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.90
_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    1.286
_exptl_absorpt_correction_T_max  0.7830
_exptl_absorpt_correction_T_min  0.5952
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1997b)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.468
_exptl_crystal_description       Irregular
_exptl_crystal_F_000             824
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.720
_refine_diff_density_min         -0.403
_refine_diff_density_rms         0.064
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.060
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     400
_refine_ls_number_reflns         7972
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.060
_refine_ls_R_factor_all          0.0486
_refine_ls_R_factor_gt           0.0329
_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^)+(0.0384P)^2^+0.8422P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0774
_refine_ls_wR_factor_ref         0.0893
_reflns_number_gt                6356
_reflns_number_total             7972
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja070764fsi20070327_070422.cif
_cod_data_source_block           nb060741
_cod_database_code               4109501