Hydrogen bonding in 1'-nitro-2'-phenyl-2',3',4',5',6',7'-hexahydro-1<i>H</i>-indole-3-spiro-3'-1'H-pyrrolizidin-2(3<i>H</i>)-one: molecular chains built from alternating R_{2}^{2}(18) and R_{2}^{2}(8) rings
G. Usha; S. Selvanayagam; D. Velmurugan; K. Ravikumar; M. Poornachandran; Acta Crystallographica Section E 61 (2005) o3312–o3314; doi:10.1107/S1600536805029107

data_2206882
_publ_section_title
;Hydrogen bonding in
 1'-nitro-2'-phenyl-2',3',4',5',6',7'-hexahydro-1<i>H</i>-indole-3-spiro-3'-1'H-pyrrolizidin-2(3<i>H</i>)-one:
 molecular chains built from alternating R_{2}^{2}(18) and R_{2}^{2}(8) rings
;
_journal_coeditor_code           BT6738
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o3312
_journal_page_last               o3314
_journal_paper_doi               10.1107/S1600536805029107
_journal_volume                  61
_journal_year                    2005
_chemical_formula_iupac          'C20 H19 N3 O3'
_chemical_formula_moiety         'C20 H19 N3 O3'
_chemical_formula_sum            'C20 H19 N3 O3'
_chemical_formula_weight         349.38
_chemical_name_systematic
;
1'-nitro-2'-phenyl-2',3',4',5',6',7'-hexahydro-1H-indole-
3-spiro-3'-1'H-pyrrolizin-2(3H)-one
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_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                 102.941(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   23.8981(15)
_cell_length_b                   7.5886(4)
_cell_length_c                   19.1370(10)
_cell_measurement_reflns_used    7483
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      26.53
_cell_measurement_theta_min      2.47
_cell_volume                     3382.4(3)
_computing_cell_refinement       'SAINT (Bruker, 2001)'
_computing_data_collection       'SMART (Bruker, 2001)'
_computing_data_reduction        SAINT
_computing_molecular_graphics
;
ORTEP-3 (Farrugia, 1997) and PLATON (Spek, 2003)
;
_computing_publication_material  'SHELXL97 and PARST (Nardelli, 1995)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.962
_diffrn_measurement_device       'Bruker SMART APEX'
_diffrn_measurement_device_type  'CCD Area Detector'
_diffrn_measurement_method       \w
_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  0.0183
_diffrn_reflns_av_sigmaI/netI    0.0157
_diffrn_reflns_limit_h_max       31
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            13982
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         27.99
_diffrn_reflns_theta_min         2.18
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.094
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.372
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1472
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.287
_refine_diff_density_min         -0.287
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.026
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     235
_refine_ls_number_reflns         3921
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.026
_refine_ls_R_factor_all          0.0595
_refine_ls_R_factor_gt           0.0532
_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^)+(0.0985P)^2^+1.7117P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1571
_refine_ls_wR_factor_ref         0.1641
_reflns_number_gt                3373
_reflns_number_total             3921
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            bt6738.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_geom_bond_publ_flag' value 'Y' changed to 'y' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29 (9
times).

'_geom_angle_publ_flag' value 'Y' changed to 'y' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29 (3
times).

'_geom_torsion_publ_flag' value 'Y' changed to 'y' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29 (10 times).

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_geom_bond_publ_flag' value 'Y' changed to 'y' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29 (9
times).

'_geom_angle_publ_flag' value 'Y' changed to 'y' according
to /home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary
named 'cif_core.dic' version 2.4.1 from 2010-06-29 (3
times).

'_geom_torsion_publ_flag' value 'Y' changed to 'y' according
to /home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary
named 'cif_core.dic' version 2.4.1 from 2010-06-29 (10 times).

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               2206882
_cod_database_fobs_code          2206882