Novel chiral phosphine ligands and complexes from amino acid esters
Slawin, Alexandra M. Z.; Woollins, J. Derek; Zhang, Qingzhi; Journal of the Chemical Society, Dalton Transactions  (2001) 621–; doi:10.1039/b009074n

data_7010444
_publ_section_title
;
 Novel chiral phosphine ligands and complexes from amino acid esters
;
_journal_issue                   5
_journal_name_full
'Journal of the Chemical Society, Dalton Transactions'
_journal_page_first              621
_journal_paper_doi               10.1039/b009074n
_journal_year                    2001
_chemical_compound_source        -
_chemical_formula_analytical     'C28 H27 N O4 P2'
_chemical_formula_moiety         'C28 H27 N O4 P2'
_chemical_formula_structural     'C28 H27 N O4 P2'
_chemical_formula_sum            'C28 H27 N O4 P2'
_chemical_formula_weight         503.45
_chemical_melting_point          ?
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.48440(10)
_cell_length_b                   14.1005(2)
_cell_length_c                   21.19600(10)
_cell_measurement_reflns_used    151
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      168
_cell_measurement_theta_min      12
_cell_volume                     2535.77(5)
_computing_cell_refinement       SMART/SAINT
_computing_data_collection       SMART
_computing_data_reduction        SAINT
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measurement_device       SMART
_diffrn_measurement_method       CCD
_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  0.0952
_diffrn_reflns_av_sigmaI/netI    0.1160
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            16024
_diffrn_reflns_theta_max         29.43
_diffrn_reflns_theta_min         1.73
_diffrn_standards_decay_%        -
_diffrn_standards_interval_count -
_diffrn_standards_interval_time  -
_diffrn_standards_number         -
_exptl_absorpt_coefficient_mu    0.206
_exptl_absorpt_correction_T_max  1.000000
_exptl_absorpt_correction_T_min  0.624851
_exptl_absorpt_correction_type   sadabs
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.319
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    -
_exptl_crystal_description       prism
_exptl_crystal_F_000             1056
_exptl_crystal_size_max          .4
_exptl_crystal_size_mid          .3
_exptl_crystal_size_min          .3
_refine_diff_density_max         0.200
_refine_diff_density_min         -0.254
_refine_diff_density_rms         0.043
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.04(6)
_refine_ls_extinction_coef       0.0078(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_all   0.546
_refine_ls_goodness_of_fit_obs   0.619
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     317
_refine_ls_number_reflns         6177
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.596
_refine_ls_restrained_S_obs      0.619
_refine_ls_R_factor_all          0.0656
_refine_ls_R_factor_obs          0.0351
_refine_ls_shift/esd_max         -0.001
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0696P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0905
_refine_ls_wR_factor_obs         0.0743
_reflns_number_observed          3914
_reflns_number_total             6227
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            b009074n.txt
_cod_data_source_block           12
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
according to '/home/adriana/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 1555 2011-01-17 13:19:09Z saulius 

The following automatic conversions were performed:

'_chemical_melting_point' value '-' was changed to '?' - the value is
undefined or not given.

Automatic conversion script
Id: cif_fix_values 1569 2011-02-09 13:29:24Z adriana 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value '-' 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 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0696P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.0696P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               7010444