3,3,6,6-Tetramethyl-9-(3-nitrophenyl)-3,4,5,6,9,10-hexahydroacridine-1,8(2<i>H</i>,7<i>H</i>)-dione
Héctor Novoa de Armas; Norbert M. Blaton; Oswald M. Peeters; Camiel J. De Ranter; Margarita Suárez Navarro; Yamila Verdecia Reyes; Estael Ochoa Rodríguez; Esperanza Salfrán; Acta Crystallographica Section C 55 (1999) 596–599; doi:10.1107/S0108270198016394

data_2008385
_publ_section_title
3,3,6,6-Tetramethyl-9-(3-nitrophenyl)-3,4,5,6,9,10-hexahydroacridine-1,8(2<i>H</i>,7<i>H</i>)-dione
_journal_issue                   4
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              596
_journal_page_last               599
_journal_paper_doi               10.1107/S0108270198016394
_journal_volume                  55
_journal_year                    1999
_chemical_formula_moiety         'C23 H26 N2 O4'
_chemical_formula_sum            'C23 H26 N2 O4'
_chemical_formula_weight         394.46
_chemical_name_systematic
; 3,3,6,6-tetramethyl-9-(3-nitrophenyl)-3,4,5,6,10-hexahydroacridine-
1,8(2H,7H)-dione
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_cell_angle_alpha                90.
_cell_angle_beta                 108.210(10)
_cell_angle_gamma                90.
_cell_formula_units_Z            4
_cell_length_a                   11.8787(8)
_cell_length_b                   15.4830(10)
_cell_length_c                   12.3467(8)
_cell_measurement_reflns_used    44
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.74
_cell_measurement_theta_min      11.48
_cell_volume                     2157.1(3)
_computing_cell_refinement       XSCANS
_computing_data_collection       'XSCANS (Siemens, 1996)'
_computing_data_reduction        XSCANS
_computing_molecular_graphics    'DIAMOND (Bergerhoff, 1996)'
_computing_publication_material
;
PLATON (Spek, 1990), PARST (Nardelli, 1983, 1995) and PARSTCIF
(Nardelli, 1991)
;
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997a)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997b)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.906
_diffrn_measured_fraction_theta_max 0.906
_diffrn_measurement_device_type  'Siemens P4 four-circle'
_diffrn_measurement_method       2\q/\w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.030
_diffrn_reflns_av_sigmaI/netI    0.0362
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -1
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -1
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            4668
_diffrn_reflns_reduction_process
;
;
_diffrn_reflns_theta_full        69.13
_diffrn_reflns_theta_max         69.13
_diffrn_reflns_theta_min         4.51
_diffrn_standards_decay_%        <1.0
_diffrn_standards_interval_count 100
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.6763
_exptl_absorpt_correction_T_max  0.935
_exptl_absorpt_correction_T_min  0.672
_exptl_absorpt_correction_type   '\y scan'
_exptl_absorpt_process_details   '(North et al., 1968)'
_exptl_crystal_colour            'light yellow'
_exptl_crystal_density_diffrn    1.2147
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             840.0
_exptl_crystal_size_max          0.47
_exptl_crystal_size_mid          0.47
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.220
_refine_diff_density_min         -0.206
_refine_ls_extinction_coef       0.0056(6)
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 1997a)'
_refine_ls_goodness_of_fit_all   1.108
_refine_ls_goodness_of_fit_ref   1.108
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     267
_refine_ls_number_reflns         3787
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.087
_refine_ls_R_factor_gt           0.059
_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^)+(0.0720P)^2^+1.1366P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.186
_reflns_number_gt                2524
_reflns_number_total             3787
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            na1388.cif
_cod_data_source_block           na1388
_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_matrix_type' value 'Full' changed to 'full' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc w =
1/[\s^2^(Fo^2^)+(0.0720P)^2^+1.1366P] where P = (Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to 'w =
1/[\s^2^(Fo^2^)+(0.0720P)^2^+1.1366P] where P = (Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_cell_volume        2157.0(3)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2008385