(4'-Acetyloxy-1,3,1'-trioxo-1,3,4,4a,4b,5,6,7,9,9a-decahydrospiro[indene-2,9'-pyrano[4,3-<i>a</i>]pyrrolizin]-3'-yl)methyl acetate
Latha, N.; Naga Siva Rao, J.; Raghunathan, R.; Divya, G.; Lakshmi, S.; Acta Crystallographica Section E 69 (2013) o1764–; doi:10.1107/S1600536813029826

data_2238955
_publ_section_title
;
 (4'-Acetyloxy-1,3,1'-trioxo-1,3,4,4a,4b,5,6,7,9,9a-decahydrospiro[indene-2,9'-pyrano[4,3-<i>a</i>]pyrrolizin]-3'-yl)methyl
 acetate
;
_journal_issue                   12
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1764
_journal_paper_doi               10.1107/S1600536813029826
_journal_volume                  69
_journal_year                    2013
_chemical_formula_iupac          'C23 H23 N O8'
_chemical_formula_moiety         'C23 H23 N O8'
_chemical_formula_sum            'C23 H23 N O8'
_chemical_formula_weight         441.42
_chemical_melting_point          463.15
_chemical_name_systematic
;(4'-Acetyloxy-1,3,1'-trioxo-1,3,4,4a,4b,5,6,7,9,9a-decahydrospiro[indene-2,9'-pyrano[4,3-<i>a</i>]pyrrolizin]-3'-yl)methyl
acetate
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_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-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.4817(4)
_cell_length_b                   13.4904(5)
_cell_length_c                   15.1639(5)
_cell_measurement_reflns_used    3596
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      24.17
_cell_measurement_theta_min      2.68
_cell_volume                     2144.21(13)
_computing_cell_refinement       'APEX2 and SAINT (Bruker, 2004)'
_computing_data_collection       'APEX2 (Bruker, 2004)'
_computing_data_reduction        'SAINT and XPREP (Bruker, 2004)'
_computing_molecular_graphics    'ORTEP-3 for Windows (Farrugia, 2012)'
_computing_publication_material  'PLATON (Spek, 2009)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SIR92 (Altomare <i>et al.</i>, 1993)'
_diffrn_ambient_temperature      295(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker Kappa APEXII CCD'
_diffrn_measurement_method       '\w and \f scan'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0316
_diffrn_reflns_av_sigmaI/netI    0.0407
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            15087
_diffrn_reflns_theta_full        29.30
_diffrn_reflns_theta_max         29.30
_diffrn_reflns_theta_min         2.36
_exptl_absorpt_coefficient_mu    0.104
_exptl_absorpt_correction_T_max  0.9744
_exptl_absorpt_correction_T_min  0.9644
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2004)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.367
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             928
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.457
_refine_diff_density_min         -0.212
_refine_ls_extinction_coef       0.0075(16)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 2008)'
_refine_ls_goodness_of_fit_ref   1.033
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     292
_refine_ls_number_reflns         5845
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.033
_refine_ls_R_factor_all          0.0757
_refine_ls_R_factor_gt           0.0517
_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^)+(0.0808P)^2^+0.0734P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1311
_refine_ls_wR_factor_ref         0.1463
_reflns_number_gt                4256
_reflns_number_total             5845
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            zs2277.cif
_cod_data_source_block           I
_cod_database_code               2238955