Models for incomplete nucleophilic attack on a protonated carbonyl group and electron-deficient alkenes: salts and zwitterions from 1-dimethylamino-naphthalene-8-carbaldehyde.
Lari, Alberth; Pitak, Matuesz B.; Coles, Simon J.; Rees, Gregory J.; Day, Stephen P.; Smith, Mark E.; Hanna, John V.; Wallis, John D.; Organic & biomolecular chemistry 10 (2012) 7763–7779; doi:10.1039/c2ob25929j

data_7152632
_publ_section_title
;
 Models for incomplete nucleophilic attack on a protonated carbonyl group
 and electron-deficient alkenes: salts and zwitterions from
 1-dimethylamino-naphthalene-8-carbaldehyde.
;
_journal_issue                   38
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              7763
_journal_page_last               7779
_journal_paper_doi               10.1039/c2ob25929j
_journal_volume                  10
_journal_year                    2012
_chemical_formula_moiety         'C21 H23 N O4'
_chemical_formula_sum            'C21 H23 N O4'
_chemical_formula_weight         353.40
_chemical_name_systematic
;
1-(1!,1!-Diethyl-1!,2!-dihydrobenzo[cd]indol-1!-ium-2!-yl)-4,6-
dioxo-1,3-dioxan-5-ide
;
_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'
_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                 95.661(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.1338(3)
_cell_length_b                   16.0686(5)
_cell_length_c                   10.9554(4)
_cell_measurement_reflns_used    4406
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      29.1206
_cell_measurement_theta_min      2.8982
_cell_volume                     1775.23(10)
_computing_cell_refinement
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.55 (release 05-01-2010 CrysAlis171 .NET)
(compiled Jan 5 2010,16:28:46)
;
_computing_data_collection
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.55 (release 05-01-2010 CrysAlis171 .NET)
(compiled Jan 5 2010,16:28:46)
;
_computing_data_reduction
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.55 (release 05-01-2010 CrysAlis171 .NET)
(compiled Jan 5 2010,16:28:46)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 15.9832
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.858
_diffrn_measurement_device_type  'Xcalibur, Sapphire3'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray Source'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0188
_diffrn_reflns_av_sigmaI/netI    0.0396
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            8335
_diffrn_reflns_theta_full        27.00
_diffrn_reflns_theta_max         29.19
_diffrn_reflns_theta_min         2.90
_exptl_absorpt_coefficient_mu    0.091
_exptl_absorpt_correction_T_max  0.988
_exptl_absorpt_correction_T_min  0.983
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.55 (release 05-01-2010 CrysAlis171 .NET)
(compiled Jan 5 2010,16:28:46)
Analytical numeric absorption correction using a multifaceted crystal
model based on expressions derived by R.C. Clark & J.S. Reid.
(Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887-897)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.322
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             752
_exptl_crystal_size_max          0.29
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.220
_refine_diff_density_min         -0.211
_refine_diff_density_rms         0.039
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.023
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     239
_refine_ls_number_reflns         4116
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.024
_refine_ls_R_factor_all          0.0554
_refine_ls_R_factor_gt           0.0376
_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^)+(0.0512P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0901
_refine_ls_wR_factor_ref         0.0942
_reflns_number_gt                3047
_reflns_number_total             4116
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2ob25929j.txt
_cod_data_source_block           compound_14
_cod_original_sg_symbol_H-M      P21/n
_cod_database_code               7152632