Sodium phosphaethynolate, Na(OCP), as a “P” transfer reagent for the synthesis of N-heterocyclic carbene supported P3 and PAsP radicals
Tondreau, Aaron M.; Benkő, Zoltán; Harmer, Jeffrey R.; Grützmacher, Hansjörg; Chemical Science 5 (2014) 1545–; doi:10.1039/c3sc53140f

data_1513839
_publ_section_title
;
 Sodium phosphaethynolate, Na(OCP), as a &#x201C;P&#x201D; transfer
 reagent for the synthesis of N-heterocyclic carbene supported P3 and PAsP
 radicals
;
_journal_issue                   4
_journal_name_full               'Chemical Science'
_journal_page_first              1545
_journal_paper_doi               10.1039/c3sc53140f
_journal_volume                  5
_journal_year                    2014
_chemical_formula_moiety         'C27 H37 N2 P'
_chemical_formula_sum            'C27 H37 N2 P'
_chemical_formula_weight         420.56
_chemical_name_common
1,3-bis(2,6-diisopropylphenyl)-2-phosphinylidene-2,3-dihydro-1H-imidazole
_chemical_name_systematic
; 
 1,3-bis(2,6-diisopropylphenyl)-2-phosphinylidene-2,3-dihydro-1H-imidazole
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 102.741(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   20.0613(13)
_cell_length_b                   6.9855(6)
_cell_length_c                   38.187(3)
_cell_measurement_reflns_used    9897
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      31.88
_cell_measurement_theta_min      2.56
_cell_volume                     5219.7(7)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w 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  0.0342
_diffrn_reflns_av_sigmaI/netI    0.0307
_diffrn_reflns_limit_h_max       28
_diffrn_reflns_limit_h_min       -28
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       55
_diffrn_reflns_limit_l_min       -55
_diffrn_reflns_number            41431
_diffrn_reflns_theta_full        31.00
_diffrn_reflns_theta_max         31.00
_diffrn_reflns_theta_min         2.13
_exptl_absorpt_coefficient_mu    0.120
_exptl_absorpt_correction_T_max  0.7467
_exptl_absorpt_correction_T_min  0.7053
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
'SADABS-2008/1 - Bruker AXS area detector scaling and absorption correction '
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.068
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Hexagon
_exptl_crystal_F_000             1824
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.431
_refine_diff_density_min         -0.349
_refine_diff_density_rms         0.050
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.089
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     323
_refine_ls_number_reflns         8261
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.089
_refine_ls_R_factor_all          0.0633
_refine_ls_R_factor_gt           0.0461
_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^)+(0.1000P)^2^+0.1200P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1410
_refine_ls_wR_factor_ref         0.1543
_reflns_number_gt                6513
_reflns_number_total             8261
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3sc53140f.txt
_cod_data_source_block           monoclinc2c
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/current/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      'C2/c  '
_cod_database_code               1513839