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_7108279
_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_absolute_configuration ad
_chemical_formula_sum            'C27 H28 N2 S2'
_chemical_formula_weight         444.63
_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                   10.0291(10)
_cell_length_b                   15.1285(15)
_cell_length_c                   15.5536(15)
_cell_measurement_reflns_used    9974
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      29.19
_cell_measurement_theta_min      2.42
_cell_volume                     2359.9(4)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0222
_diffrn_reflns_av_sigmaI/netI    0.0233
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            21311
_diffrn_reflns_theta_full        29.24
_diffrn_reflns_theta_max         29.24
_diffrn_reflns_theta_min         1.88
_exptl_absorpt_coefficient_mu    0.243
_exptl_absorpt_correction_T_max  0.9486
_exptl_absorpt_correction_T_min  0.9352
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.251
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             944
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.248
_refine_diff_density_min         -0.256
_refine_diff_density_rms         0.039
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.01(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.034
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     284
_refine_ls_number_reflns         6400
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.034
_refine_ls_R_factor_all          0.0347
_refine_ls_R_factor_gt           0.0303
_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^)+(0.0517P)^2^+0.2200P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0804
_refine_ls_wR_factor_ref         0.0835
_reflns_number_gt                5931
_reflns_number_total             6400
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2cc34952c.txt
_cod_data_source_block           mo_dm12279_0m
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               7108279