Synthesis and characterization of binary-complex models of ureas and 1,3-dicarbonyl compounds: deeper insights into reaction mechanisms using snap-shot structural analysis.
Azuma, Takumi; Kobayashi, Yusuke; Sakata, Ken; Sasamori, Takahiro; Tokitoh, Norihiro; Takemoto, Yoshiji; The Journal of organic chemistry 79 (2014) 1805–1817; doi:10.1021/jo4028775

data_4028994
_publ_section_title
;
 Synthesis and characterization of binary-complex models of ureas and
 1,3-dicarbonyl compounds: deeper insights into reaction mechanisms using
 snap-shot structural analysis.
;
_journal_issue                   4
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              1805
_journal_page_last               1817
_journal_paper_doi               10.1021/jo4028775
_journal_volume                  79
_journal_year                    2014
_chemical_absolute_configuration rm
_chemical_formula_moiety         'C32 H33 N3 O3'
_chemical_formula_sum            'C32 H33 N3 O3'
_chemical_formula_weight         507.61
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      19
_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                   9.60080(10)
_cell_length_b                   12.0613(2)
_cell_length_c                   22.8444(3)
_cell_measurement_temperature    103(2)
_cell_volume                     2645.34(6)
_computing_cell_refinement       HKL2000
_computing_data_collection       CrystalClear
_computing_data_reduction        HKL2000
_computing_molecular_graphics    'Yadokari-XG 2011 (Wakita Nemoto et al., 2011)'
_computing_publication_material  'Yadokari-XG 2011 (Wakita,Nemoto et al., 2011)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    SIR2004
_diffrn_ambient_temperature      103(2)
_diffrn_detector_area_resol_mean 28.5714
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Rigaku VariMax Saturn'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  Confocal
_diffrn_radiation_source         'rotating-anode X-ray tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0371
_diffrn_reflns_av_sigmaI/netI    0.0248
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            24211
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         2.46
_exptl_absorpt_coefficient_mu    0.082
_exptl_absorpt_correction_T_max  0.9975
_exptl_absorpt_correction_T_min  0.9918
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
 MULABS - Empirical Correction for Absorption Anisotropy.
 Blessing, R. H., Acta Cryst., A51, 33-38 (1995).
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.275
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1080
_exptl_crystal_size_max          0.10
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.146
_refine_diff_density_min         -0.130
_refine_diff_density_rms         0.028
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.3(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.070
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     357
_refine_ls_number_reflns         5148
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.070
_refine_ls_R_factor_all          0.0295
_refine_ls_R_factor_gt           0.0274
_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^)+(0.0279P)^2^+0.4653P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0651
_refine_ls_wR_factor_ref         0.0665
_reflns_number_gt                4930
_reflns_number_total             5148
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo4028775_si_004.cif
_cod_data_source_block           comp2
_cod_original_sg_symbol_Hall     '    P 2ac 2ab  '
_cod_original_sg_symbol_H-M      P212121
_cod_database_code               4028994