Readily accessible chiral at nitrogen cage structures.
Rowley, Julian H.; Yau, Sze Chak; Kariuki, Benson M.; Kennedy, Alan R.; Tomkinson, Nicholas C. O.; Organic & biomolecular chemistry 11 (2013) 2198–2205; doi:10.1039/c3ob27458f

data_7152874
_publ_section_title
;
 Readily accessible chiral at nitrogen cage structures.
;
_journal_issue                   13
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              2198
_journal_page_last               2205
_journal_paper_doi               10.1039/c3ob27458f
_journal_volume                  11
_journal_year                    2013
_chemical_formula_sum            'C23 H28 N4 O2'
_chemical_formula_weight         392.49
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_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                 111.569(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.0424(7)
_cell_length_b                   11.6660(4)
_cell_length_c                   12.3412(5)
_cell_measurement_reflns_used    3622
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      72.7098
_cell_measurement_theta_min      3.7858
_cell_volume                     2014.04(16)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'Oxford Diffraction Gemini S'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54180
_diffrn_reflns_av_R_equivalents  0.0799
_diffrn_reflns_av_sigmaI/netI    0.0551
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            8335
_diffrn_reflns_theta_full        69.98
_diffrn_reflns_theta_max         69.98
_diffrn_reflns_theta_min         7.38
_exptl_absorpt_coefficient_mu    0.672
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.83381
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.34.46 (release 25-11-2010 CrysAlis171 .NET)
(compiled Nov 25 2010,17:55:46)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.294
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'shard cut from large crystal'
_exptl_crystal_F_000             840
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.438
_refine_diff_density_min         -0.254
_refine_diff_density_rms         0.074
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.098
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     264
_refine_ls_number_reflns         3785
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.098
_refine_ls_R_factor_all          0.1001
_refine_ls_R_factor_gt           0.0809
_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^)+(0.0724P)^2^+3.6761P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2029
_refine_ls_wR_factor_ref         0.2153
_reflns_number_gt                3040
_reflns_number_total             3785
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            c3ob27458f.txt
_cod_data_source_block           tompkin2012
_cod_original_cell_volume        2014.04(14)
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               7152874