Remarkable Solvatochromic Color Change via Proton Tautomerism of a Phenol-Linked Imidazole Derivative.
Yamashita, Hiroaki; Abe, Jiro; The journal of physical chemistry. A 118 (2014) 1430–1438; doi:10.1021/jp5007928

data_1513344
_publ_section_title
;
 Remarkable Solvatochromic Color Change via Proton Tautomerism of a
 Phenol-Linked Imidazole Derivative.
;
_journal_issue                   8
_journal_name_full               'The journal of physical chemistry. A'
_journal_page_first              1430
_journal_page_last               1438
_journal_paper_doi               10.1021/jp5007928
_journal_volume                  118
_journal_year                    2014
_chemical_formula_sum            'C37 H46 N2 O2'
_chemical_formula_weight         550.77
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_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
_cell_angle_alpha                116.0520(6)
_cell_angle_beta                 97.4525(7)
_cell_angle_gamma                101.1716(7)
_cell_formula_units_Z            2
_cell_length_a                   9.4723(5)
_cell_length_b                   13.8209(7)
_cell_length_c                   14.2201(7)
_cell_measurement_reflns_used    4532
_cell_measurement_temperature    90.(2)
_cell_measurement_theta_max      28.3560
_cell_measurement_theta_min      2.4196
_cell_volume                     1591.32(14)
_computing_cell_refinement       'SAINT V8.32B (Bruker AXS Inc., 2013)'
_computing_data_collection       'Bruker SMART APEXII'
_computing_data_reduction        'SAINT V8.32B (Bruker AXS Inc., 2013)'
_computing_molecular_graphics    'XSHELL V6.3.1 (Bruker AXS)'
_computing_publication_material  'Generate Report (Bruker AXS)'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_diffrn_ambient_temperature      90.(2)
_diffrn_detector_area_resol_mean 8.3333
_diffrn_measured_fraction_theta_full 0.980
_diffrn_measured_fraction_theta_max 0.980
_diffrn_measurement_device_type  'Bruker D8 goniometer'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0096
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            9294
_diffrn_reflns_theta_full        28.61
_diffrn_reflns_theta_max         28.61
_diffrn_reflns_theta_min         1.64
_diffrn_source                   'sealed tube'
_exptl_absorpt_coefficient_mu    0.070
_exptl_absorpt_correction_T_max  0.98
_exptl_absorpt_correction_T_min  0.92
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SADABS Sheldrick 1996'
_exptl_crystal_colour            'dark red'
_exptl_crystal_density_diffrn    1.149
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             596
_exptl_crystal_size_max          0.500
_exptl_crystal_size_mid          0.300
_exptl_crystal_size_min          0.300
_refine_diff_density_max         0.336
_refine_diff_density_min         -0.194
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.023
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     383
_refine_ls_number_reflns         7110
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.023
_refine_ls_R_factor_all          0.0548
_refine_ls_R_factor_gt           0.0430
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0468P)^2^+0.7807P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1022
_refine_ls_wR_factor_ref         0.1106
_reflns_number_gt                5932
_reflns_number_total             7110
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jp5007928_si_002.cif
_cod_data_source_block           I
_cod_database_code               1513344
_shelx_res_checksum              17359
_shelx_hkl_checksum              83611