Aspects of phosphaallene chemistry - heat induced formation of 1,2-dihydrophosphetes by intramolecular nucleophilic aromatic substitution and photochemical generation of tricyclic phosphiranes.
Tendyck, Jonas C.; Klöcker, Hans; Schürmann, Lina; Würthwein, Ernst-Ulrich; Hepp, Alexander; Layh, Marcus; Uhl, Werner; The Journal of organic chemistry  (2020) –; doi:10.1021/acs.joc.9b03056

data_4037980
_publ_section_title
;
 Aspects of phosphaallene chemistry - heat induced formation of
 1,2-dihydrophosphetes by intramolecular nucleophilic aromatic
 substitution and photochemical generation of tricyclic phosphiranes.
;
_journal_name_full               'The Journal of organic chemistry'
_journal_paper_doi               10.1021/acs.joc.9b03056
_journal_year                    2020
_chemical_formula_sum            'C21 H32 Cl O P'
_chemical_formula_weight         366.88
_space_group_crystal_system      monoclinic
_space_group_IT_number           9
_space_group_name_Hall           'C -2yc'
_space_group_name_H-M_alt        'C 1 c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 100.437(2)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   16.1468(8)
_cell_length_b                   16.1269(8)
_cell_length_c                   16.4389(8)
_cell_measurement_reflns_used    9596
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.915
_cell_measurement_theta_min      2.327
_cell_volume                     4209.8(4)
_computing_cell_refinement       'Bruker SAINT+'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-2014 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0288
_diffrn_reflns_av_unetI/netI     0.0372
_diffrn_reflns_Laue_measured_fraction_full 0.993
_diffrn_reflns_Laue_measured_fraction_max 0.992
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            25141
_diffrn_reflns_point_group_measured_fraction_full 0.971
_diffrn_reflns_point_group_measured_fraction_max 0.973
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.925
_diffrn_reflns_theta_min         2.059
_diffrn_source                   microsource
_exptl_absorpt_coefficient_mu    0.263
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6646
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.158
_exptl_crystal_description       block
_exptl_crystal_F_000             1584
_exptl_crystal_size_max          0.250
_exptl_crystal_size_mid          0.140
_exptl_crystal_size_min          0.100
_refine_diff_density_max         0.629
_refine_diff_density_min         -0.288
_refine_diff_density_rms         0.051
_refine_ls_abs_structure_details
;
 Flack x determined using 4048 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.01(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.038
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     499
_refine_ls_number_reflns         9801
_refine_ls_number_restraints     236
_refine_ls_restrained_S_all      1.034
_refine_ls_R_factor_all          0.0470
_refine_ls_R_factor_gt           0.0422
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0608P)^2^+2.4591P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1041
_refine_ls_wR_factor_ref         0.1066
_reflns_Friedel_coverage         0.958
_reflns_Friedel_fraction_full    0.948
_reflns_Friedel_fraction_max     0.953
_reflns_number_gt                9094
_reflns_number_total             9801
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo9b03056_si_001.cif
_cod_data_source_block           sad_a_compound_14
_cod_original_sg_symbol_H-M      'C c'
_cod_database_code               4037980
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.937
_shelx_estimated_absorpt_t_max   0.974
_shelx_res_checksum              80321
_shelx_hkl_checksum              46619