Functional helquats: helical cationic dyes with marked, switchable chiroptical properties in the visible region.
Reyes-Gutiérrez, Paul E; Jirásek, Michael; Severa, Lukáš; Novotná, Pavlína; Koval, Dušan; Sázelová, Petra; Vávra, Jan; Meyer, Andreas; Císařová, Ivana; Šaman, David; Pohl, Radek; Štěpánek, Petr; Slavíček, Petr; Coe, Benjamin J.; Hájek, Miroslav; Kašička, Václav; Urbanová, Marie; Teplý, Filip; Chemical communications (Cambridge, England) 51 (2015) 1583–1586; doi:10.1039/c4cc08967g

data_7116246
_publ_section_title
;
 Functional helquats: helical cationic dyes with marked, switchable
 chiroptical properties in the visible region.
;
_journal_issue                   9
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              1583
_journal_page_last               1586
_journal_paper_doi               10.1039/c4cc08967g
_journal_volume                  51
_journal_year                    2015
_chemical_compound_source        'synthesized by the authors'
_chemical_formula_moiety         'C42 H44 N4, 2(C F3 O3 S)'
_chemical_formula_sum            'C44 H44 F6 N4 O6 S2'
_chemical_formula_weight         902.95
_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_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2014-05-20 deposited with the CCDC.
2014-12-15 downloaded from the CCDC.
;
_cell_angle_alpha                69.6030(10)
_cell_angle_beta                 77.8740(10)
_cell_angle_gamma                78.1550(10)
_cell_formula_units_Z            2
_cell_length_a                   10.9183(3)
_cell_length_b                   13.1838(3)
_cell_length_c                   15.8627(3)
_cell_measurement_reflns_used    9832
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.0
_cell_measurement_theta_min      2.35
_cell_volume                     2070.59(8)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w 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  0.0236
_diffrn_reflns_av_sigmaI/netI    0.0230
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            34575
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.67
_exptl_absorpt_coefficient_mu    0.211
_exptl_absorpt_correction_T_max  0.9380
_exptl_absorpt_correction_T_min  0.8883
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.448
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             940
_exptl_crystal_size_max          0.58
_exptl_crystal_size_mid          0.38
_exptl_crystal_size_min          0.31
_refine_diff_density_max         0.465
_refine_diff_density_min         -0.387
_refine_diff_density_rms         0.049
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.027
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     563
_refine_ls_number_reflns         9476
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.027
_refine_ls_R_factor_all          0.0526
_refine_ls_R_factor_gt           0.0405
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0540P)^2^+1.1788P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1040
_refine_ls_wR_factor_ref         0.1134
_reflns_number_gt                7847
_reflns_number_total             9476
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            c4cc08967g2.cif
_cod_data_source_block           pr230_teply
_cod_depositor_comments
'Adding full bibliography for 7116236--7116249.cif.'
_cod_original_cell_volume        2070.60(8)
_cod_database_code               7116246