An efficient route for the synthesis of phosphorus-selenium macro-heterocycles
Guoxiong Hua; Alexandra M. Z. Slawin; Rebecca A. M. Randall; David B. Cordes; Luke Crawford; Michael Buhl; J. Derek Woollins; Chem.Commun. 49 (2013) 2619–; doi:10.1039/c3cc40515j

data_7109012
_publ_section_title
;
 An efficient route for the synthesis of phosphorus-selenium
 macro-heterocycles
;
_journal_name_full               Chem.Commun.
_journal_page_first              2619
_journal_paper_doi               10.1039/c3cc40515j
_journal_volume                  49
_journal_year                    2013
_chemical_formula_moiety         'C20 H26 O2 P2 Se4'
_chemical_formula_sum            'C20 H26 O2 P2 Se4'
_chemical_formula_weight         676.19
_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                 133.807(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   22.920(12)
_cell_length_b                   9.231(3)
_cell_length_c                   15.919(9)
_cell_measurement_reflns_used    4258
_cell_measurement_temperature    93(2)
_cell_measurement_theta_max      28.4
_cell_measurement_theta_min      2.5
_cell_volume                     2431(2)
_computing_cell_refinement       'CrystalClear (Rigaku Corp., 2004)'
_computing_data_collection       'CrystalClear (Rigaku Corp., 2004)'
_computing_data_reduction        'CrystalClear (Rigaku Corp., 2004)'
_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      93(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  CCD
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  confocal
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0467
_diffrn_reflns_av_sigmaI/netI    0.0443
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            7397
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.30
_diffrn_reflns_theta_min         2.46
_exptl_absorpt_coefficient_mu    6.183
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.646
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Jacobson, R. (1998) Private communication'
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.848
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             1312
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.12
_refine_diff_density_max         1.190
_refine_diff_density_min         -0.968
_refine_diff_density_rms         0.137
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.075
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     127
_refine_ls_number_reflns         2201
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.075
_refine_ls_R_factor_all          0.0559
_refine_ls_R_factor_gt           0.0504
_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^)+(0.0645P)^2^+14.3063P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1288
_refine_ls_wR_factor_ref         0.1327
_reflns_number_gt                1960
_reflns_number_total             2201
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3cc40515j.txt
_cod_data_source_block           hua54
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7109012