A Conformational Study of Phospha(III)- and Phospha(V)-guanidine Compounds
Natalie E. Mansfield; Joanna Grundy; Martyn P. Coles; Anthony G. Avent; Peter B. Hitchcock; Journal of the American Chemical Society 128 (2006) 13879–13893; doi:10.1021/ja064212t

data_4111001
_publ_section_title
;
 A Conformational Study of Phospha(III)- and Phospha(V)-guanidine
 Compounds
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              13879
_journal_page_last               13893
_journal_paper_doi               10.1021/ja064212t
_journal_volume                  128
_journal_year                    2006
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C25 H33 N2 P Se'
_chemical_formula_sum            'C25 H33 N2 P Se'
_chemical_formula_weight         471.46
_chemical_name_common            '[SePPh2C(NHC6H11)(NC6H11)]'
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.2
_audit_creation_date             2002-10-29T10:28:23-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                82.172(1)
_cell_angle_beta                 82.934(1)
_cell_angle_gamma                69.345(1)
_cell_formula_units_Z            2
_cell_length_a                   8.8687(1)
_cell_length_b                   9.6892(1)
_cell_length_c                   14.9910(2)
_cell_measurement_reflns_used    8908
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      27.878
_cell_measurement_theta_min      3.705
_cell_measurement_wavelength     0.71073
_cell_volume                     1190.24(3)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Nonius BV, 1997-2000)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device       '95mm CCD camera on \k-goniostat'
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       CCD
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0295
_diffrn_reflns_av_unetI/netI     0.0281
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            15459
_diffrn_reflns_theta_full        27.88
_diffrn_reflns_theta_max         27.88
_diffrn_reflns_theta_min         3.73
_exptl_absorpt_coefficient_mu    1.658
_exptl_absorpt_correction_T_max  0.6174
_exptl_absorpt_correction_T_min  0.5757
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
        [c.f. r.h. blessing, acta cryst. (1995), a51, 33-38]
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.316
_exptl_crystal_description       prism
_exptl_crystal_F_000             492
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.3
_refine_diff_density_max         0.339
_refine_diff_density_min         -0.317
_refine_diff_density_rms         0.041
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.04
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     266
_refine_ls_number_reflns         5599
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.04
_refine_ls_R_factor_all          0.0298
_refine_ls_R_factor_gt           0.0253
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0117P)^2^+0.5539P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0564
_refine_ls_wR_factor_ref         0.0585
_reflns_number_gt                5129
_reflns_number_total             5599
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja064212tsi20060615_042948.cif
_cod_data_source_block           oct2302
_cod_original_cell_volume        1190.24(2)
_cod_database_code               4111001