An Electron-Rich Proazaphosphatrane for Isocyanate Trimerization to Isocyanurates
Steven M. Raders; John G. Verkade; Journal of Organic Chemistry 75 (2010) 5308–5311; doi:10.1021/jo9023396

data_4025582
_publ_section_title
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 An Electron-Rich Proazaphosphatrane for Isocyanate Trimerization to
 Isocyanurates
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              5308
_journal_page_last               5311
_journal_paper_doi               10.1021/jo9023396
_journal_volume                  75
_journal_year                    2010
_chemical_formula_sum            'C30 H39 N4 O3 P'
_chemical_formula_weight         534.62
_space_group_IT_number           198
_symmetry_cell_setting           cubic
_symmetry_space_group_name_Hall  'P 2ac 2ab 3'
_symmetry_space_group_name_H-M   'P 21 3'
_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            8
_cell_length_a                   18.1117(11)
_cell_length_b                   18.1117(11)
_cell_length_c                   18.1117(11)
_cell_measurement_reflns_used    1007
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      22.80
_cell_measurement_theta_min      2.51
_cell_volume                     5941.2(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, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and 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  0.0746
_diffrn_reflns_av_sigmaI/netI    0.0419
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            53616
_diffrn_reflns_theta_full        28.25
_diffrn_reflns_theta_max         28.25
_diffrn_reflns_theta_min         1.12
_exptl_absorpt_coefficient_mu    0.129
_exptl_absorpt_correction_T_max  1
_exptl_absorpt_correction_T_min  0.77
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.195
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2288
_exptl_crystal_size_max          0.52
_exptl_crystal_size_mid          0.48
_exptl_crystal_size_min          0.32
_refine_diff_density_max         0.475
_refine_diff_density_min         -0.186
_refine_diff_density_rms         0.051
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.12(14)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.113
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     245
_refine_ls_number_reflns         4889
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.113
_refine_ls_R_factor_all          0.0646
_refine_ls_R_factor_gt           0.0428
_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^)+(0.0696P)^2^+0.5410P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1047
_refine_ls_wR_factor_ref         0.1236
_reflns_number_gt                4142
_reflns_number_total             4889
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo9023396_si_002.cif
_cod_data_source_block           ver127
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Cubic' changed to 'cubic' according
to the built-in table from CIF Core dictionary named 'cif_core.dic'
version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 

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_database_code               4025582