Phosphazene vs.diazaphospholene PN-bond cleavage in spirocyclic cyclodiphosphazenes
Burck, Sebastian; Gudat, Dietrich; Nieger, Martin; Schalley, Christoph A.; Weilandt, Torsten; Dalton Transactions  (2008) 3478–3485; doi:10.1039/b717219b

data_7003566
_publ_section_title
;
 Phosphazene vs.diazaphospholene PN-bond cleavage in spirocyclic
 cyclodiphosphazenes
;
_journal_issue                   26
_journal_name_full               'Dalton Transactions'
_journal_page_first              3478
_journal_page_last               3485
_journal_paper_doi               10.1039/b717219b
_journal_year                    2008
_chemical_formula_moiety         'C40 H48 N6 P2 - benzene'
_chemical_formula_sum            'C46 H54 N6 P2'
_chemical_formula_weight         752.89
_chemical_name_common
;
1,4,8,11-Tetramesityl-1,4,6,8,11,12-hexaaza-5lambda5,7lambda5-
diphospha-dispiro(4.1.4.1)-dodeca-2,9-diene
;
_chemical_name_systematic
;
1,4,8,11-Tetramesityl-1,4,6,8,11,12-hexaaza-5lambda5,7lambda5-
diphospha-dispiro[4.1.4.1]-dodeca-2,9-diene
;
_space_group_IT_number           64
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-C 2ac 2'
_symmetry_space_group_name_H-M   'C m c a'
_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                   22.6662(8)
_cell_length_b                   14.4954(5)
_cell_length_c                   12.2951(4)
_cell_measurement_reflns_used    4188
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      25
_cell_measurement_theta_min      1
_cell_volume                     4039.6(2)
_computing_cell_refinement       DENZO-SMN
_computing_data_collection       Collect
_computing_data_reduction        DENZO-SMN
_computing_molecular_graphics    XP
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       'rotation in phi and omega, 1 deg.'
_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  0.0672
_diffrn_reflns_av_sigmaI/netI    0.0587
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            13927
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         3.26
_exptl_absorpt_coefficient_mu    0.149
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellowish
_exptl_crystal_density_diffrn    1.238
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plates
_exptl_crystal_F_000             1608
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.287
_refine_diff_density_min         -0.354
_refine_diff_density_rms         0.055
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.991
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     130
_refine_ls_number_reflns         1829
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.991
_refine_ls_R_factor_all          0.0659
_refine_ls_R_factor_gt           0.0390
_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^)+(0.0534P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0899
_refine_ls_wR_factor_ref         0.0977
_reflns_number_gt                1270
_reflns_number_total             1829
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b717219b.txt
_cod_data_source_block           gudat112_compound_3b
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'none' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      'C mca'
_cod_database_code               7003566