<i>N</i>-[(3a<i>R</i>*,3b<i>S</i>*)-1,3b,7,7-Tetramethyl-3a,3b,4,5,6,7,7a,7b-octahydro-3<i>H</i>-cyclopenta[3,4]cyclobuta[1,2]benzen-3a-yl]acetamide
Ait Elhad, Mustapha; Benharref, Ahmed; El Ammari, Lahcen; Saadi, Mohamed; Oukhrib, Abdelouahd; Berraho, Moha; IUCrData 2 (2017) x170275–; doi:10.1107/S2414314617002759

data_1545383
_publ_section_title
;
 <i>N</i>-[(3a<i>R</i>*,3b<i>S</i>*)-1,3b,7,7-Tetramethyl-3a,3b,4,5,6,7,7a,7b-octahydro-3<i>H</i>-cyclopenta[3,4]cyclobuta[1,2]benzen-3a-yl]acetamide
;
_journal_issue                   2
_journal_name_full               IUCrData
_journal_page_first              x170275
_journal_paper_doi               10.1107/S2414314617002759
_journal_volume                  2
_journal_year                    2017
_chemical_formula_iupac          'C17 H27 N O'
_chemical_formula_moiety         'C17 H27 N O'
_chemical_formula_sum            'C17 H27 N O'
_chemical_formula_weight         261.39
_chemical_name_systematic
<i>N</i>-[(3a<i>R</i>*,3b<i>S</i>*)-1,3b,7,7-Tetramethyl-3,3b,4,5,6,7,7a,7b-octahydro-3a<i>H</i>-cyclopenta[3,4]cyclobuta[1,2]benzen-3a-yl]acetamide
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_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-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.7147(3)
_cell_length_b                   10.0052(3)
_cell_length_c                   16.3078(5)
_cell_measurement_reflns_used    3245
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      26.4
_cell_measurement_theta_min      2.4
_cell_volume                     1585.08(8)
_computing_cell_refinement
;
SAINT (Bruker, 2009)
;
_computing_data_collection
;
APEX2 (Bruker, 2009)
;
_computing_data_reduction
;
SAINT (Bruker, 2009)
;
_computing_molecular_graphics
;
Ortep-3 for Windows (Farrugia, 2012)
;
_computing_publication_material
;
publCIF (Westrip, 2010)
;
_computing_structure_refinement
;
<i>SHELXL2014/7</i> (Sheldrick, 2015)
;
_computing_structure_solution
;
<i>SHELXS2014/7</i> (Sheldrick, 2008)
;
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker X8 APEX'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0270
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            21647
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.370
_diffrn_reflns_theta_min         2.388
_exptl_absorpt_coefficient_mu    0.067
_exptl_absorpt_correction_T_max  0.7460
_exptl_absorpt_correction_T_min  0.6792
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
(SADABS; Bruker, 2009)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.104
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             576
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.157
_refine_diff_density_min         -0.199
_refine_ls_abs_structure_details
;
Flack <i>x</i> determined using 2562 quotients
[(<i>I</i>^+^)-(<i>I</i>^-^)]/[(<i>I</i>^+^)+(<i>I</i>^-^)]
Parsons <i>et al.</i>, 2013).
;
_refine_ls_abs_structure_Flack   0.2(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     177
_refine_ls_number_reflns         3245
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0412
_refine_ls_R_factor_gt           0.0383
_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^)+(0.0661P)^2^+0.1181P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0997
_refine_ls_wR_factor_ref         0.1028
_reflns_number_gt                3045
_reflns_number_total             3245
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            su4132sup1.cif
_cod_data_source_block           I
_cod_database_code               1545383
_cod_database_fobs_code          1545383
_shelx_hkl_checksum              21647
_shelx_res_checksum              66795