Cycloaddition of phosphanylidene-sigma4-phosphoranes ArP=PMe3 and quinones to yield 1,3,2-dioxophospholanes.
Chen, Xufang; Smith, Rhett C; Protasiewicz, John D; Chemical communications (Cambridge, England)  (2004) 146–147; doi:10.1039/b309165a

data_7102408
_publ_section_title
;
 Cycloaddition of phosphanylidene-sigma4-phosphoranes ArP=PMe3 and
 quinones to yield 1,3,2-dioxophospholanes.
;
_journal_issue                   2
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              146
_journal_page_last               147
_journal_paper_doi               10.1039/b309165a
_journal_year                    2004
_chemical_formula_sum            'C30 H25 Cl4 O2 P'
_chemical_formula_weight         590.27
_chemical_name_common
tetrachlorobenzo-2,6-dimesitylphenyl-1,3,2-dioxophospholane
_chemical_name_systematic
;
tetrachlorobenzo-2,6-dimesitylphenyl-1,3,2-dioxophospholane
;
_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                 105.55(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.451(3)
_cell_length_b                   24.614(8)
_cell_length_c                   14.068(4)
_cell_measurement_reflns_used    39
_cell_measurement_temperature    273(2)
_cell_measurement_theta_max      12.47
_cell_measurement_theta_min      2.65
_cell_volume                     2819.1(14)
_computing_cell_refinement       'Bruker XSCANS'
_computing_data_collection       'Bruker XSCANS'
_computing_data_reduction        'Bruker SHELXTL'
_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      273(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker P4'
_diffrn_measurement_method       '2\q/\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  0.0618
_diffrn_reflns_av_sigmaI/netI    0.1548
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -1
_diffrn_reflns_limit_k_max       1
_diffrn_reflns_limit_k_min       -28
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            5714
_diffrn_reflns_theta_full        24.00
_diffrn_reflns_theta_max         24.00
_diffrn_reflns_theta_min         2.24
_diffrn_standards_interval_count 97
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.503
_exptl_absorpt_correction_T_max  0.4126
_exptl_absorpt_correction_T_min  0.1924
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.391
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    .
_exptl_crystal_description       Block
_exptl_crystal_F_000             1216
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.253
_refine_diff_density_min         -0.265
_refine_diff_density_rms         0.063
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.910
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     340
_refine_ls_number_reflns         4432
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.910
_refine_ls_R_factor_all          0.2103
_refine_ls_R_factor_gt           0.0800
_refine_ls_shift/su_max          0.482
_refine_ls_shift/su_mean         0.016
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1382P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1900
_refine_ls_wR_factor_ref         0.2652
_reflns_number_gt                1851
_reflns_number_total             4432
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b309165a.txt
_cod_data_source_block           dmpqc1
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7102408