Crucial factors influencing racemic resolution of N-(4-nitrobenzoyl)-dl-serine by brucine
Białońska, Agata; Ciunik, Zbigniew; CrystEngComm 12 (2010) 2781–; doi:10.1039/b926090k

data_7212376
_publ_section_title
;
 Crucial factors influencing racemic resolution of
 N-(4-nitrobenzoyl)-dl-serine by brucine
;
_journal_issue                   10
_journal_name_full               CrystEngComm
_journal_page_first              2781
_journal_paper_doi               10.1039/b926090k
_journal_volume                  12
_journal_year                    2010
_chemical_absolute_configuration rm
_chemical_formula_moiety         'C23 H27 N2 O4, C10 H9 N2 O6, C2 H6 O'
_chemical_formula_sum            'C35 H42 N4 O11'
_chemical_formula_weight         694.73
_chemical_name_systematic
;
brucinium N-(4-nitrobenzoyl)-L-serinate ethanol solvate
;
_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-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.332(2)
_cell_length_b                   12.953(3)
_cell_length_c                   26.793(5)
_cell_measurement_reflns_used    10293
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      35.25
_cell_measurement_theta_min      3.09
_cell_volume                     3238.7(12)
_computing_cell_refinement
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.32.5 (release 08-05-2007 CrysAlis171 .NET)
(compiled May 8 2007,13:10:02)
;
_computing_data_collection
;
CrysAlis CCD, Oxford Diffraction Ltd.,
Version 1.171.32.5 (release 08-05-2007 CrysAlis171 .NET)
(compiled May 8 2007,13:10:02)
;
_computing_data_reduction
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.32.5 (release 08-05-2007 CrysAlis171 .NET)
(compiled May 8 2007,13:10:02)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Kuma KM4CCD'
_diffrn_measurement_method       '\w scan'
_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  0.0505
_diffrn_reflns_av_sigmaI/netI    0.0251
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       38
_diffrn_reflns_limit_l_min       -42
_diffrn_reflns_number            78852
_diffrn_reflns_theta_full        34.00
_diffrn_reflns_theta_max         34.00
_diffrn_reflns_theta_min         3.09
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.107
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.425
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1472
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.40
_refine_diff_density_max         0.807
_refine_diff_density_min         -0.206
_refine_diff_density_rms         0.053
_refine_ls_abs_structure_details 'from known structure (Toda et al., 1985)'
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.063
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     451
_refine_ls_number_reflns         7238
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.063
_refine_ls_R_factor_all          0.0476
_refine_ls_R_factor_gt           0.0416
_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^)+(0.0641P)^2^+0.3043P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1014
_refine_ls_wR_factor_ref         0.1038
_reflns_number_gt                6691
_reflns_number_total             7238
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b926090k.txt
_cod_data_source_block           11
_cod_database_code               7212376