Synthesis and Characterization of R~2~PN=P(^i^BuNCH~2~CH~2~)~3~N: A New Bulky Electron-Rich Phosphine for Efficient Pd-Assisted Suzuki-Miyaura Cross-Coupling Reactions
Jesudoss V. Kingston; John G. Verkade; Journal of Organic Chemistry 72 (2007) 2816–2822; doi:10.1021/jo062452l

data_4022800
_publ_section_title
;
 Synthesis and Characterization of R~2~PN=P(^i^BuNCH~2~CH~2~)~3~N:
 A New Bulky Electron-Rich Phosphine for Efficient Pd-Assisted
 Suzuki-Miyaura Cross-Coupling Reactions
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              2816
_journal_page_last               2822
_journal_paper_doi               10.1021/jo062452l
_journal_volume                  72
_journal_year                    2007
_chemical_formula_sum            'C18 H39 N5 P'
_chemical_formula_weight         356.51
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 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            8
_cell_length_a                   20.503(4)
_cell_length_b                   11.297(2)
_cell_length_c                   18.369(4)
_cell_measurement_reflns_used    1013
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      27.88
_cell_measurement_theta_min      2.90
_cell_volume                     4254.6(14)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_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      193(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.972
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0312
_diffrn_reflns_av_sigmaI/netI    0.0276
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            37473
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         28.31
_diffrn_reflns_theta_min         1.99
_exptl_absorpt_coefficient_mu    0.139
_exptl_absorpt_correction_T_max  1
_exptl_absorpt_correction_T_min  0.85
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker SADABS'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.113
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1576
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.404
_refine_diff_density_min         -0.173
_refine_diff_density_rms         0.040
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.00(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     445
_refine_ls_number_reflns         9964
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.029
_refine_ls_R_factor_all          0.0405
_refine_ls_R_factor_gt           0.0343
_refine_ls_shift/su_max          0.037
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0663P)^2^+0.1843P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0895
_refine_ls_wR_factor_ref         0.0950
_reflns_number_gt                9112
_reflns_number_total             9964
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo062452lsi20061129_065211.cif
_cod_data_source_block           ver112
_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.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'none' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_database_code               4022800