Versatile routes to selenoether functionalised tertiary phosphines.
Cunningham, Tom J.; Elsegood, Mark R. J.; Kelly, Paul F.; Smith, Martin B.; Staniland, Paul M.; Dalton transactions (Cambridge, England : 2003) 39 (2010) 5216–5218; doi:10.1039/c0dt00004c

data_7025797
_publ_section_title
;
 Versatile routes to selenoether functionalised tertiary phosphines.
;
_journal_issue                   22
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              5216
_journal_page_last               5218
_journal_paper_doi               10.1039/c0dt00004c
_journal_volume                  39
_journal_year                    2010
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C22 H25 O3 P Se'
_chemical_formula_sum            'C22 H25 O3 P Se'
_chemical_formula_weight         447.35
_chemical_name_systematic
;
?
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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            4
_cell_length_a                   8.1752(5)
_cell_length_b                   10.1189(6)
_cell_length_c                   24.5004(14)
_cell_measurement_reflns_used    17858
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.21
_cell_measurement_theta_min      2.18
_cell_volume                     2026.8(2)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL and local programs'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.937
_diffrn_measurement_device_type  'Bruker SMART 1000 CCD diffractometer'
_diffrn_measurement_method       '\w rotation with narrow frames'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0366
_diffrn_reflns_av_sigmaI/netI    0.0520
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            17792
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         28.95
_diffrn_reflns_theta_min         1.66
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.951
_exptl_absorpt_correction_T_max  0.829
_exptl_absorpt_correction_T_min  0.430
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS v2.10, Sheldrick, G.M., (2003)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.466
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       tablet
_exptl_crystal_F_000             920
_exptl_crystal_size_max          0.52
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.10
_refine_diff_density_max         1.531
_refine_diff_density_min         -1.196
_refine_diff_density_rms         0.076
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.017(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.060
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     248
_refine_ls_number_reflns         4890
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.060
_refine_ls_R_factor_all          0.0571
_refine_ls_R_factor_gt           0.0391
_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^)+(0.0157P)^2^+1.8103P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0785
_refine_ls_wR_factor_ref         0.0858
_reflns_number_gt                4049
_reflns_number_total             4890
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            c0dt00004c.txt
_cod_data_source_block           2b
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               7025797