Zwitterionic phosphazenium phosphazenate ligands
Benson, Mark A.; Ledger, Joanne; Steiner, Alexander; Chemical Communications (Cambridge, United Kingdom)  (2007) 3823–3825; doi:10.1039/b708993g

data_7102143
_publ_section_title
;
 Zwitterionic phosphazenium phosphazenate ligands
;
_journal_coden_ASTM              CHCOFS
_journal_issue                   37
_journal_name_full
;
 Chemical Communications (Cambridge, United Kingdom)
;
_journal_page_first              3823
_journal_page_last               3825
_journal_paper_doi               10.1039/b708993g
_journal_year                    2007
_chemical_formula_sum            'C54 H108 I Li N9 O4 P3'
_chemical_formula_weight         1174.24
_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
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 102.5830(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.9616(6)
_cell_length_b                   22.3804(10)
_cell_length_c                   24.1793(12)
_cell_measurement_temperature    150(2)
_cell_volume                     6317.5(5)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Bruker Smart Apex'
_diffrn_measurement_method       'omega scans'
_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  0.0293
_diffrn_reflns_av_sigmaI/netI    0.0369
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            32443
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         4.19
_exptl_absorpt_coefficient_mu    0.630
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.744
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.235
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             2512
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.2
_refine_diff_density_max         1.230
_refine_diff_density_min         -0.748
_refine_diff_density_rms         0.075
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.035
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     654
_refine_ls_number_reflns         11095
_refine_ls_number_restraints     488
_refine_ls_restrained_S_all      1.081
_refine_ls_R_factor_all          0.0724
_refine_ls_R_factor_gt           0.0568
_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^)+(0.0652P)^2^+12.2629P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1414
_refine_ls_wR_factor_ref         0.1505
_reflns_number_gt                8747
_reflns_number_total             11095
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b708993g.txt
_cod_data_source_block           2
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7102143