Photochromic Diarylethene-Containing Ionic Liquids and N-Heterocyclic Carbenes
Vivian Wing-Wah Yam; Jason Ka-Wai Lee; Chi-Chiu Ko; Nianyong Zhu; Journal of the American Chemical Society 131 (2009) 912–913; doi:10.1021/ja808791e

data_4103834
_publ_section_title
;
 Photochromic Diarylethene-Containing Ionic Liquids and N-Heterocyclic
 Carbenes
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              912
_journal_page_last               913
_journal_paper_doi               10.1021/ja808791e
_journal_volume                  131
_journal_year                    2009
_chemical_formula_moiety         'C18 H22 Ag Cl3 N2 S2'
_chemical_formula_sum            'C18 H22 Ag Cl3 N2 S2'
_chemical_formula_weight         544.72
_chemical_name_systematic
;
 ?
;
_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   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                85.15(3)
_cell_angle_beta                 82.80(3)
_cell_angle_gamma                65.11(3)
_cell_formula_units_Z            2
_cell_length_a                   8.222(3)
_cell_length_b                   8.984(3)
_cell_length_c                   17.071(5)
_cell_measurement_reflns_used    0
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      0
_cell_measurement_theta_min      0
_cell_volume                     1134.1(7)
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.985
_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  0.0442
_diffrn_reflns_av_sigmaI/netI    0.0400
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            7141
_diffrn_reflns_theta_full        25.68
_diffrn_reflns_theta_max         25.68
_diffrn_reflns_theta_min         2.41
_exptl_absorpt_coefficient_mu    1.432
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.595
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             548
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.577
_refine_diff_density_min         -0.543
_refine_diff_density_rms         0.074
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.022
_refine_ls_hydrogen_treatment    ride-on
_refine_ls_matrix_type           full
_refine_ls_number_parameters     241
_refine_ls_number_reflns         4232
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.022
_refine_ls_R_factor_all          0.0535
_refine_ls_R_factor_gt           0.0388
_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^)+(0.0630P)^2^+0.3652P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1003
_refine_ls_wR_factor_ref         0.1088
_reflns_number_gt                3278
_reflns_number_total             4232
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja808791e_si_004.cif
_cod_data_source_block           Complex_1
_cod_original_cell_volume        1134.1(6)
_cod_database_code               4103834