Bridged Triarylamines: A New Class of Heterohelicenes
Jason E. Field; Thomas J. Hill; D. Venkataraman; Journal of Organic Chemistry 68 (2003) 6071–6078; doi:10.1021/jo026883p

data_4022361
_publ_contact_author_address
;
Department of Chemistry
University of Massachusetts
Amherst, MA 01003
;
_publ_contact_author_email       dv@chem.umass.edu
_publ_contact_author_fax         413-545-4490
_publ_contact_author_name        'D. Venkataraman'
_publ_contact_author_phone       413-545-2028
_publ_section_title
;
 Bridged Triarylamines: A New Class of Heterohelicenes
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              6071
_journal_page_last               6078
_journal_paper_doi               10.1021/jo026883p
_journal_volume                  68
_journal_year                    2003
_chemical_compound_source        'Local laboratory'
_chemical_formula_moiety         'C23 H21 N O4 '
_chemical_formula_sum            'C23 H21 N O4'
_chemical_formula_weight         375.424
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           maXus
_cell_angle_alpha                111.0020(10)
_cell_angle_beta                 113.4360(10)
_cell_angle_gamma                96.5529(9)
_cell_formula_units_Z            2
_cell_length_a                   10.1343(2)
_cell_length_b                   10.1351(2)
_cell_length_c                   11.8738(3)
_cell_measurement_reflns_used    3406
_cell_measurement_temperature    298
_cell_measurement_theta_max      25.028
_cell_measurement_theta_min      0.998
_cell_volume                     996.63(4)
_computing_data_collection       KappaCCD
_computing_data_reduction        'Denzo and Scalepak (Otwinowski & Minor, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device       KappaCCD
_diffrn_orient_matrix_type       X=UH
_diffrn_orient_matrix_UB_11      0.06361
_diffrn_orient_matrix_UB_12      0.01564
_diffrn_orient_matrix_UB_13      -0.09174
_diffrn_orient_matrix_UB_21      0.10597
_diffrn_orient_matrix_UB_22      -0.00384
_diffrn_orient_matrix_UB_23      0.03204
_diffrn_orient_matrix_UB_31      0.05506
_diffrn_orient_matrix_UB_32      -0.07900
_diffrn_orient_matrix_UB_33      -0.03479
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           ' MoK\a'
_diffrn_radiation_wavelength_id  all
_diffrn_reflns_av_R_equivalents  0.027
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            6606
_diffrn_reflns_theta_full        24.97
_diffrn_reflns_theta_max         24.97
_exptl_absorpt_coefficient_mu    0.086
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.251
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Cube
_refine_diff_density_max         0.480
_refine_diff_density_min         -0.397
_refine_diff_density_rms         0.126
_refine_ls_extinction_coef       0.126(11)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.217
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     254
_refine_ls_number_reflns         3470
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.217
_refine_ls_R_factor_all          0.0798
_refine_ls_R_factor_gt           0.0547
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0840P)^2^+0.1386P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1307
_refine_ls_wR_factor_ref         0.1685
_reflns_number_gt                2638
_reflns_number_total             3470
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo026883psi20021219_022332_4.cif
_cod_data_source_block           comp4
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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 
;
_cod_original_sg_symbol_H-M      'P -1          '
_cod_original_formula_sum        'C23 H21 N O4 '
_cod_database_code               4022361