Far Away from Flatland. Synthesis and Molecular Structure of Dihetera[3.3.<i>n</i>]propellanes and Trihetera[3.3.<i>n</i>]propellanes: Advanced Analogues of Morpholine/Piperazine.
Sokolenko, Yevhenii M.; Yurov, Yevhen Yu; Vashchenko, Bohdan V.; Hryshchuk, Oleksandr V.; Filimonova, Yuliia; Ostapchuk, Eugeniy N.; Artemenko, Artem; Zaremba, Oleg V.; Grygorenko, Oleksandr O.; The Journal of organic chemistry 84 (2019) 13908–13921; doi:10.1021/acs.joc.9b02067

data_4034519
_publ_section_title
;
 Far Away from Flatland. Synthesis and Molecular Structure of
 Dihetera[3.3.<i>n</i>]propellanes and Trihetera[3.3.<i>n</i>]propellanes:
 Advanced Analogues of Morpholine/Piperazine.
;
_journal_issue                   21
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              13908
_journal_page_last               13921
_journal_paper_doi               10.1021/acs.joc.9b02067
_journal_volume                  84
_journal_year                    2019
_chemical_formula_moiety         'C8 H16 N2 O,  2(Cl), H2 O'
_chemical_formula_sum            'C8 H18 Cl2 N2 O2'
_chemical_formula_weight         245.14
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2016/4
_cell_angle_alpha                90
_cell_angle_beta                 91.197(4)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.1176(10)
_cell_length_b                   15.208(2)
_cell_length_c                   10.1283(14)
_cell_measurement_reflns_used    1478
_cell_measurement_temperature    138(2)
_cell_measurement_theta_max      27.38
_cell_measurement_theta_min      2.42
_cell_volume                     1096.1(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2016/4 (Sheldrick, 2016)'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      138(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0404
_diffrn_reflns_av_unetI/netI     0.0307
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            11338
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.000
_diffrn_reflns_theta_min         2.416
_exptl_absorpt_coefficient_mu    0.571
_exptl_absorpt_correction_T_max  0.94
_exptl_absorpt_correction_T_min  0.81
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.486
_exptl_crystal_description       needle
_exptl_crystal_F_000             520
_exptl_crystal_size_max          0.500
_exptl_crystal_size_mid          0.200
_exptl_crystal_size_min          0.120
_refine_diff_density_max         0.378
_refine_diff_density_min         -0.207
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.063
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     135
_refine_ls_number_reflns         2162
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.063
_refine_ls_R_factor_all          0.0383
_refine_ls_R_factor_gt           0.0304
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0388P)^2^+0.3998P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0752
_refine_ls_wR_factor_ref         0.0782
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1867
_reflns_number_total             2162
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo9b02067_si_005.cif
_cod_data_source_block           XRAY93
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4034519
_shelx_shelxl_version_number     2016/4
_shelx_estimated_absorpt_t_min   0.763
_shelx_estimated_absorpt_t_max   0.935
_shelx_res_checksum              24326
_shelx_hkl_checksum              74276