2,2,7,7-Tetramethyl-1,2,3,4,5,6,7,8-octahydroacridine-1,8-dione
Öztürk Yildirim, Sema; Butcher, Ray J.; Şimsek, Rahime; El-Khouly, Ahmed; Şafak, Cihat; Acta Crystallographica Section E 69 (2013) o88–o89; doi:10.1107/S1600536812048957

data_2237197
_publ_section_title
;
 2,2,7,7-Tetramethyl-1,2,3,4,5,6,7,8-octahydroacridine-1,8-dione
;
_journal_coeditor_code           MW2098
_journal_issue                   1
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o88
_journal_page_last               o89
_journal_paper_doi               10.1107/S1600536812048957
_journal_volume                  69
_journal_year                    2013
_chemical_formula_iupac          'C17 H21 N O2'
_chemical_formula_moiety         'C17 H21 N O2'
_chemical_formula_sum            'C17 H21 N O2'
_chemical_formula_weight         271.35
_chemical_name_systematic
;
2,2,7,7-Tetramethyl-1,2,3,4,5,6,7,8-octahydroacridine-1,8-dione
;
_space_group_IT_number           95
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'P 4cw 2c'
_symmetry_space_group_name_H-M   'P 43 2 2'
_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                   9.99077(19)
_cell_length_b                   9.99077(19)
_cell_length_c                   14.5063(4)
_cell_measurement_reflns_used    1551
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      75.0825
_cell_measurement_theta_min      3.0438
_cell_volume                     1447.95(6)
_computing_cell_refinement
;
CrysAlis PRO (Agilent, 2011)
;
_computing_data_collection
;
CrysAlis PRO (Agilent, 2011)
;
_computing_data_reduction
;
CrysAlis PRO (Agilent, 2011)
;
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      123(2)
_diffrn_detector_area_resol_mean 10.5081
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device_type  'Agilent Xcalibur (Ruby, Gemini)'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Cu) X-ray Source'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0304
_diffrn_reflns_av_sigmaI/netI    0.0320
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            3055
_diffrn_reflns_theta_full        67.50
_diffrn_reflns_theta_max         75.26
_diffrn_reflns_theta_min         4.43
_exptl_absorpt_coefficient_mu    0.642
_exptl_absorpt_correction_T_max  0.8560
_exptl_absorpt_correction_T_min  0.7397
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
[CrysAlis RED (Agilent, 2011), based on expressions derived by
Clark & Reid (1995)]
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.245
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             584
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.157
_refine_diff_density_min         -0.243
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.090
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     94
_refine_ls_number_reflns         1452
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.090
_refine_ls_R_factor_all          0.0472
_refine_ls_R_factor_gt           0.0431
_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^)+(0.0749P)^2^+0.0669P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1160
_refine_ls_wR_factor_ref         0.1219
_reflns_number_gt                1349
_reflns_number_total             1452
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            mw2098.cif
_cod_data_source_block           I
_cod_database_code               2237197
_cod_database_fobs_code          2237197