N-Phosphino-amidines and -guanidines: synthesis, structure and P,N-chelate chemistry
Baiget, Lise; Batsanov, Andrei S.; Dyer, Philip W.; Fox, Mark A.; Hanton, Martin J.; Howard, Judith A. K.; Lane, Philip K.; Solomon, Sophia A.; Dalton Transactions  (2008) 1043–1054; doi:10.1039/b715736c

data_7003356
_publ_section_title
;
 N-Phosphino-amidines and -guanidines: synthesis, structure and
 P,N-chelate chemistry
;
_journal_issue                   8
_journal_name_full               'Dalton Transactions'
_journal_page_first              1043
_journal_page_last               1054
_journal_paper_doi               10.1039/b715736c
_journal_year                    2008
_chemical_formula_moiety         'C26 H35 N2 P'
_chemical_formula_sum            'C26 H35 N2 P'
_chemical_formula_weight         406.53
_chemical_name_systematic
;
N,N'-Dicyclohexyl-N-diphenylphosphino-acetamidine
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_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_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   19.450(2)
_cell_length_b                   10.630(1)
_cell_length_c                   22.218(2)
_cell_measurement_reflns_used    14782
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      1.9
_cell_volume                     4593.6(8)
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2007)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2007)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2007)'
_computing_molecular_graphics    'SHELXTL version 6.14 (Bruker, 2003)'
_computing_publication_material  'SHELXTL version 6.14 (Bruker, 2003)'
_computing_structure_refinement  'SHELXTL version 6.14 (Bruker, 2003)'
_computing_structure_solution    'SHELXTL version 6.14 (Bruker, 2003)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 10.00
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Rigaku IP R-Axis SPIDER diffractometer'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1360
_diffrn_reflns_av_sigmaI/netI    0.3704
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            36129
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.38
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.134
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.176
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1760
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.255
_refine_diff_density_min         -0.242
_refine_diff_density_rms         0.047
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.323
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     264
_refine_ls_number_reflns         4043
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.323
_refine_ls_R_factor_all          0.0885
_refine_ls_R_factor_gt           0.0776
_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^)+(0.0241P)^2^+3.3183P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1482
_refine_ls_wR_factor_ref         0.1527
_reflns_number_gt                3662
_reflns_number_total             4043
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b715736c.txt
_cod_data_source_block           4
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_exptl_absorpt_correction_type' value 'None' changed to
'none' 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_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               7003356