Annulated carbamates are precursors for the ring contraction of the adamantane framework
Hrdina, Radim; Holovko-Kamoshenkova, Oksana M.; Císařová, Ivana; Koucký, Filip; Machalický, Oldřich; RSC Advances 12 (2022) 31056–31060; doi:10.1039/D2RA06402B

data_7245747
_publ_section_title
;
 Annulated carbamates are precursors for the ring contraction of the
 adamantane framework
;
_journal_issue                   48
_journal_name_full               'RSC Advances'
_journal_page_first              31056
_journal_page_last               31060
_journal_paper_doi               10.1039/D2RA06402B
_journal_volume                  12
_journal_year                    2022
_chemical_compound_source        'synthesized by the authors'
_chemical_formula_moiety         'C15 H25 N O2'
_chemical_formula_sum            'C15 H25 N O2'
_chemical_formula_weight         251.36
_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
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2022-08-04 deposited with the CCDC.	2022-10-24 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 105.123(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.2381(5)
_cell_length_b                   11.7529(6)
_cell_length_c                   10.0683(4)
_cell_measurement_reflns_used    4325
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      66.5409
_cell_measurement_theta_min      3.7414
_cell_volume                     1398.00(11)
_computing_cell_refinement       'SAINT V8.40B (Bruker AXS LLC, 2019)'
_computing_data_collection       'Bruker Instrument Service vV6.2.16'
_computing_data_reduction        'SAINT V8.40B (Bruker AXS LLC, 2019)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'XT, VERSION 2018/2'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker D8 VENTURE Kappa Duo PHOTONIII CMOS'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  'Helios Cu  multilayer optic'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_unetI/netI     0.0342
_diffrn_reflns_Laue_measured_fraction_full 0.994
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       0
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            31666
_diffrn_reflns_point_group_measured_fraction_full 0.994
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        66.678
_diffrn_reflns_theta_max         66.678
_diffrn_reflns_theta_min         3.741
_diffrn_source                   'I\mS  micro-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.614
_exptl_absorpt_correction_T_max  0.97
_exptl_absorpt_correction_T_min  0.86
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Sevvana, M., Ruf, M., Us\'on, I., Sheldrick, G. M., and Herbst-Irmer, R. (2019)
"Non-merohedral twinning: from minerals to proteins"
Acta. Cryst. D75, 1040-1050.
doi:10.1107/S2059798319010179
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.194
_exptl_crystal_description       needle
_exptl_crystal_F_000             552
_exptl_crystal_size_max          0.280
_exptl_crystal_size_mid          0.045
_exptl_crystal_size_min          0.043
_refine_diff_density_max         0.286
_refine_diff_density_min         -0.213
_refine_diff_density_rms         0.039
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     267
_refine_ls_number_reflns         4600
_refine_ls_number_restraints     99
_refine_ls_restrained_S_all      1.050
_refine_ls_R_factor_all          0.0629
_refine_ls_R_factor_gt           0.0463
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0387P)^2^+0.4921P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0994
_refine_ls_wR_factor_ref         0.1090
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3745
_reflns_number_total             4600
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d2ra06402b2.cif
_cod_data_source_block           cu_rh_82_org_hrdina_5
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7245747
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.847
_shelx_estimated_absorpt_t_max   0.974
_shelx_res_checksum              86096