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_4110999
_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         'C19 H37 N2 P'
_chemical_formula_sum            'C19 H37 N2 P'
_chemical_formula_weight         324.48
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      61
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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             2004-11-05T09:48:01-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   9.9734(3)
_cell_length_b                   24.3803(7)
_cell_length_c                   16.6163(4)
_cell_measurement_reflns_used    24443
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      26.022
_cell_measurement_theta_min      3.395
_cell_measurement_wavelength     0.71073
_cell_volume                     4040.33(19)
_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_detector                 'CCD plate'
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device       '95mm CCD camera on \k-goniostat'
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       'CCD rotation images, thick slices'
_diffrn_orient_matrix_type       'by Nonius Collect from scalepack cell'
_diffrn_orient_matrix_UB_11      0.59982E-1
_diffrn_orient_matrix_UB_12      0.51752E-2
_diffrn_orient_matrix_UB_13      0.326781E-1
_diffrn_orient_matrix_UB_21      -0.17293E-1
_diffrn_orient_matrix_UB_22      -0.576005E-1
_diffrn_orient_matrix_UB_23      0.95491E-2
_diffrn_orient_matrix_UB_31      0.784635E-1
_diffrn_orient_matrix_UB_32      -0.166511E-1
_diffrn_orient_matrix_UB_33      -0.228764E-1
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0735
_diffrn_reflns_av_unetI/netI     0.0451
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       30
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            21806
_diffrn_reflns_theta_full        26.02
_diffrn_reflns_theta_max         26.02
_diffrn_reflns_theta_min         3.46
_diffrn_source                   'Enraf Nonius FR590'
_exptl_absorpt_coefficient_mu    0.137
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.067
_exptl_crystal_description       prism
_exptl_crystal_F_000             1440
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.15
_refine_diff_density_max         1.15
_refine_diff_density_min         -0.215
_refine_diff_density_rms         0.052
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.002
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     203
_refine_ls_number_reflns         3964
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.002
_refine_ls_R_factor_all          0.0823
_refine_ls_R_factor_gt           0.0557
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0798P)^2^+2.3130P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1356
_refine_ls_wR_factor_ref         0.1534
_reflns_number_gt                2902
_reflns_number_total             3964
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja064212tsi20060615_042913.cif
_cod_data_source_block           oct2704
_cod_database_code               4110999