1-Methyl-1,2,3,4-tetrahydrocarbolin-2-ium-3-carboxylate
Lu, Cheng-Tao; Jing, Lin-lin; Wang, Hai-Bo; Tang, Hai-Feng; Sun, Xiao-Li; Acta Crystallographica Section E 66 (2010) o446–; doi:10.1107/S1600536810002163

data_2225082
_publ_section_title
;
 1-Methyl-1,2,3,4-tetrahydrocarbolin-2-ium-3-carboxylate
;
_journal_coeditor_code           PB2017
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o446
_journal_paper_doi               10.1107/S1600536810002163
_journal_volume                  66
_journal_year                    2010
_chemical_formula_iupac          'C13 H14 N2 O2'
_chemical_formula_moiety         'C13 H14 N2 O2'
_chemical_formula_sum            'C13 H14 N2 O2'
_chemical_formula_weight         230.26
_chemical_name_systematic
;
1-Methyl-1,2,3,4-tetrahydrocarbolin-2-ium-3-carboxylate
;
_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                   4.9772(8)
_cell_length_b                   14.520(2)
_cell_length_c                   15.307(2)
_cell_measurement_reflns_used    666
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      18.04
_cell_measurement_theta_min      2.66
_cell_volume                     1106.2(3)
_computing_cell_refinement       'SAINT (Bruker, 2000)'
_computing_data_collection       'APEX2 (Bruker, 2000)'
_computing_data_reduction        'SAINT (Bruker, 2000)'
_computing_molecular_graphics
;ORTEPIII (Burnett & Johnson, 1996) and
ORTEP-3 for Windows (Farrugia, 1997)
;
_computing_publication_material
'SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker APEXII CCD area-detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0530
_diffrn_reflns_av_sigmaI/netI    0.0572
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            5528
_diffrn_reflns_theta_full        25.05
_diffrn_reflns_theta_max         25.05
_diffrn_reflns_theta_min         1.93
_diffrn_standards_number         5536
_exptl_absorpt_coefficient_mu    0.095
_exptl_absorpt_correction_T_max  0.9876
_exptl_absorpt_correction_T_min  0.9705
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2000)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.383
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             488
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.13
_refine_diff_density_max         0.222
_refine_diff_density_min         -0.173
_refine_ls_extinction_coef       0.026(6)
_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   1.001
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     156
_refine_ls_number_reflns         1166
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.001
_refine_ls_R_factor_all          0.0578
_refine_ls_R_factor_gt           0.0418
_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^)+(0.0740P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1080
_refine_ls_wR_factor_ref         0.1173
_reflns_number_gt                880
_reflns_number_total             1166
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            pb2017.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
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_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' 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 
;
_cod_original_cell_volume        1106.3(3)
_cod_database_code               2225082
_cod_database_fobs_code          2225082