Tailor-made synthesis of various backbone-substituted imidazolinium salts by triflic anhydride mediated intramolecular cyclisation
Jun Zhang; Xiaolong Su; Jun Fu; Xinke Qin; Meixin Zhao; Min Shi; Chem.Commun. 48 (2012) 9192–; doi:10.1039/c2cc34952c

data_7108276
_publ_section_title
;
 Tailor-made synthesis of various backbone-substituted imidazolinium salts
 by triflic anhydride mediated intramolecular cyclisation
;
_journal_name_full               Chem.Commun.
_journal_page_first              9192
_journal_paper_doi               10.1039/c2cc34952c
_journal_volume                  48
_journal_year                    2012
_chemical_formula_sum            'C29 H33 F3 N2 O3 S'
_chemical_formula_weight         546.63
_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                   11.6191(11)
_cell_length_b                   14.5312(14)
_cell_length_c                   17.0220(16)
_cell_measurement_temperature    296(2)
_cell_volume                     2874.0(5)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.1089
_diffrn_reflns_av_sigmaI/netI    0.0701
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            32907
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         1.84
_exptl_absorpt_coefficient_mu    0.164
_exptl_absorpt_correction_T_max  0.9648
_exptl_absorpt_correction_T_min  0.9284
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.263
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1152
_exptl_crystal_size_max          0.46
_exptl_crystal_size_mid          0.32
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.565
_refine_diff_density_min         -0.235
_refine_diff_density_rms         0.052
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.6(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.031
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     343
_refine_ls_number_reflns         5056
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.031
_refine_ls_R_factor_all          0.1654
_refine_ls_R_factor_gt           0.0858
_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^)+(0.1550P)^2^+1.1830P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2280
_refine_ls_wR_factor_ref         0.2978
_reflns_number_gt                2535
_reflns_number_total             5056
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2cc34952c.txt
_cod_data_source_block           z
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               7108276