(2<i>S</i>)-2-Benzyl-1-[(4<i>R</i>)-4-benzyl-2,2-dimethyl-1,3-oxazolan-3-yl]pent-4-en-1-one
K. Ravikumar; B. Sridhar; K. S. Kiran kumar Reddy; G. Sabitha; J. S. Yadav; Acta Crystallographica Section E 62 (2006) o4755–o4757; doi:10.1107/S1600536806039389

data_2210765
_publ_section_title
(2<i>S</i>)-2-Benzyl-1-[(4<i>R</i>)-4-benzyl-2,2-dimethyl-1,3-oxazolan-3-yl]pent-4-en-1-one
_journal_coeditor_code           RZ2071
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o4755
_journal_page_last               o4757
_journal_paper_doi               10.1107/S1600536806039389
_journal_volume                  62
_journal_year                    2006
_chemical_formula_iupac          'C24 H29 N O2'
_chemical_formula_moiety         'C24 H29 N O2'
_chemical_formula_sum            'C24 H29 N O2'
_chemical_formula_weight         363.48
_chemical_name_systematic
;
(2S)-2-Benzyl-1-[(4R)-4-benzyl-2,2-dimethyl-1,3-oxazolan-3-yl]pent-4-en-1-one
;
_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                   10.0061(12)
_cell_length_b                   11.5146(14)
_cell_length_c                   18.602(2)
_cell_measurement_reflns_used    3930
_cell_measurement_temperature    273(2)
_cell_measurement_theta_max      21.24
_cell_measurement_theta_min      2.31
_cell_volume                     2143.3(4)
_computing_cell_refinement       'SAINT (Bruker, 2001)'
_computing_data_collection       'SMART (Bruker, 2001)'
_computing_data_reduction        SAINT
_computing_molecular_graphics
'SHELXTL/PC (Sheldrick, 1990) and PLATON (Spek, 2003)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      273(2)
_diffrn_measured_fraction_theta_full 0.958
_diffrn_measured_fraction_theta_max 0.958
_diffrn_measurement_device       'Bruker SMART APEX CCD area-detector'
_diffrn_measurement_method       \w
_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  0.0249
_diffrn_reflns_av_sigmaI/netI    0.0195
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            10985
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.08
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.071
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.126
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             784
_exptl_crystal_size_max          0.19
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.106
_refine_diff_density_min         -0.176
_refine_ls_abs_structure_details 'Flack (1983), 1532 Friedels pairs'
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     265
_refine_ls_number_reflns         2069
_refine_ls_number_restraints     4
_refine_ls_restrained_S_all      1.062
_refine_ls_R_factor_all          0.0444
_refine_ls_R_factor_gt           0.0382
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0558P)^2^+0.202P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0958
_refine_ls_wR_factor_ref         0.1008
_reflns_number_gt                1832
_reflns_number_total             2069
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            rz2071.cif
_cod_data_source_block           I
_cod_database_code               2210765
_cod_database_fobs_code          2210765