Stereospecific deoxygenation of phosphine oxides with retention of configuration using triphenylphosphine or triethyl phosphite as an oxygen acceptor.
Wu, Hai-Chen; Yu, Jin-Quan; Spencer, Jonathan B.; Organic letters 6 (2004) 4675–4678; doi:10.1021/ol048227c

data_1506956
_publ_section_title
;
 Stereospecific deoxygenation of phosphine oxides with retention of
 configuration using triphenylphosphine or triethyl phosphite as an oxygen
 acceptor.
;
_journal_issue                   25
_journal_name_full               'Organic letters'
_journal_page_first              4675
_journal_page_last               4678
_journal_paper_doi               10.1021/ol048227c
_journal_volume                  6
_journal_year                    2004
_chemical_formula_moiety         'C48 H28 F12 P2'
_chemical_formula_sum            'C48 H28 F12 P2'
_chemical_formula_weight         894.64
_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                 110.0500(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   28.4224(6)
_cell_length_b                   8.0575(2)
_cell_length_c                   18.7865(6)
_cell_measurement_reflns_used    8712
_cell_measurement_temperature    180(2)
_cell_measurement_theta_max      25.03
_cell_measurement_theta_min      1.00
_cell_volume                     4041.61(19)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Nonius B.V. 1998)'
_computing_data_reduction
;
 HKL Denzo and Scalepack (Otwinowski & Minor 1997)
;
_computing_publication_material  'SHELXL-97 (Sheldrick 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick 1997)'
_computing_structure_solution    'SIR-92 (Altomare et al. 1994)'
_diffrn_ambient_temperature      180(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_diffrn_measurement_method       'Thin slice \w and \f scans'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0344
_diffrn_reflns_av_sigmaI/netI    0.0388
_diffrn_reflns_limit_h_max       33
_diffrn_reflns_limit_h_min       -33
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            12761
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.65
_exptl_absorpt_coefficient_mu    0.199
_exptl_absorpt_correction_T_max  0.981
_exptl_absorpt_correction_T_min  0.942
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
multi-scan from symmetry-related measurements 
 Sortav (Blessing 1995)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.470
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1816
_exptl_crystal_size_max          0.46
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.853
_refine_diff_density_min         -0.614
_refine_diff_density_rms         0.078
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.027
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     280
_refine_ls_number_reflns         3554
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.027
_refine_ls_R_factor_all          0.0753
_refine_ls_R_factor_gt           0.0608
_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^)+(0.0905P)^2^+9.6517P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1610
_refine_ls_wR_factor_ref         0.1713
_reflns_number_gt                2856
_reflns_number_total             3554
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol048227csi20040902_075219.cif
_cod_data_source_block           sp0301
_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_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        4041.61(18)
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               1506956