Bifunctional diphosphorus Lewis acids from cyclodiphosphadiazanes.
Davidson, Reagan J; Weigand, Jan J; Burford, Neil; Cameron, T Stanley; Decken, Andreas; Werner-Zwanziger, Ulrike; Chemical communications (Cambridge, England)  (2007) 4671–4673; doi:10.1039/b710853b

data_7102276
_publ_section_title
;
 Bifunctional diphosphorus Lewis acids from cyclodiphosphadiazanes.
;
_journal_issue                   44
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              4671
_journal_page_last               4673
_journal_paper_doi               10.1039/b710853b
_journal_year                    2007
_chemical_formula_sum            'C25 H28 F6 N4 O6 P2 S2'
_chemical_formula_weight         720.57
_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                75.406(5)
_cell_angle_beta                 81.369(5)
_cell_angle_gamma                86.308(5)
_cell_formula_units_Z            2
_cell_length_a                   8.871(3)
_cell_length_b                   11.269(4)
_cell_length_c                   16.513(6)
_cell_measurement_reflns_used    5483
_cell_measurement_temperature    173(1)
_cell_measurement_theta_max      28.11
_cell_measurement_theta_min      2.32
_cell_volume                     1578.9(9)
_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      173(1)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.936
_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  0.0288
_diffrn_reflns_av_sigmaI/netI    0.0545
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            10866
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.29
_diffrn_source                   'fine-focus sealed tube'
_diffrn_source_type              K760
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.351
_exptl_absorpt_correction_T_max  0.9827
_exptl_absorpt_correction_T_min  0.8580
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1997b)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.516
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Rod
_exptl_crystal_F_000             740
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.517
_refine_diff_density_min         -0.377
_refine_diff_density_rms         0.059
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     421
_refine_ls_number_reflns         6807
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.043
_refine_ls_R_factor_all          0.0713
_refine_ls_R_factor_gt           0.0446
_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^)+(0.0546P)^2^+0.7642P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1096
_refine_ls_wR_factor_ref         0.1283
_reflns_number_gt                4850
_reflns_number_total             6807
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            b710853b.txt
_cod_data_source_block           nb070163
_cod_database_code               7102276