Cation-Anion Dual Sensing of a Fluorescent Quinoxalinone Derivative Using Lactam-Lactim Tautomerism.
Nakane, Yuta; Takeda, Takashi; Hoshino, Norihisa; Sakai, Ken-Ichi; Akutagawa, Tomoyuki; The journal of physical chemistry. A 119 (2015) 6223–6231; doi:10.1021/acs.jpca.5b02850

data_1520381
_publ_section_title
;
 Cation-Anion Dual Sensing of a Fluorescent Quinoxalinone Derivative Using
 Lactam-Lactim Tautomerism.
;
_journal_issue                   24
_journal_name_full               'The journal of physical chemistry. A'
_journal_page_first              6223
_journal_page_last               6231
_journal_paper_doi               10.1021/acs.jpca.5b02850
_journal_volume                  119
_journal_year                    2015
_chemical_absolute_configuration 'CHOOSE rm ad rmad syn or unk'
_chemical_formula_moiety         'C21 H31 N3 O2'
_chemical_formula_sum            'C21 H31 N3 O2'
_chemical_formula_weight         357.49
_space_group_crystal_system      monoclinic
_space_group_IT_number           7
_space_group_name_Hall           'P -2yac'
_space_group_name_H-M_alt        'P 1 n 1'
_symmetry_space_group_name_Hall  'P -2yac'
_symmetry_space_group_name_H-M   'P 1 n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.0000
_cell_angle_beta                 90.753(4)
_cell_angle_gamma                90.0000
_cell_formula_units_Z            2
_cell_length_a                   4.6265(4)
_cell_length_b                   5.6189(6)
_cell_length_c                   38.026(4)
_cell_measurement_reflns_used    1719
_cell_measurement_temperature    90
_cell_measurement_theta_max      67.65
_cell_measurement_theta_min      4.65
_cell_volume                     988.43(17)
_computing_cell_refinement       'RAPID AUTO'
_computing_data_collection       'RAPID AUTO (Rigaku, ????)'
_computing_data_reduction        'RAPID AUTO'
_computing_molecular_graphics    'CrystalStructure 4.1'
_computing_publication_material  'CrystalStructure 4.1 (Rigaku, 2014)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'Il Milione (Burla, et al., 2007)'
_diffrn_ambient_temperature      90
_diffrn_detector_area_resol_mean 10.000
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device_type  'Rigaku R-AXIS RAPID'
_diffrn_measurement_method       \w
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54187
_diffrn_reflns_av_R_equivalents  0.0843
_diffrn_reflns_Laue_measured_fraction_full 0.000
_diffrn_reflns_Laue_measured_fraction_max 0.000
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       44
_diffrn_reflns_limit_l_min       -45
_diffrn_reflns_number            10585
_diffrn_reflns_point_group_measured_fraction_full 0.000
_diffrn_reflns_point_group_measured_fraction_max 0.000
_diffrn_reflns_theta_full        68.180
_diffrn_reflns_theta_max         68.180
_diffrn_reflns_theta_min         4.652
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.615
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.201
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             388.00
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.050
_exptl_crystal_size_min          0.025
_refine_diff_density_max         0.27
_refine_diff_density_min         -0.30
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.131
_refine_ls_hydrogen_treatment    mixed
_refine_ls_number_parameters     243
_refine_ls_number_reflns         1788
_refine_ls_number_restraints     2
_refine_ls_R_factor_all          0.1511
_refine_ls_R_factor_gt           0.0903
_refine_ls_shift/su_max          0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.1291P)^2^+0.6587P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2308
_refine_ls_wR_factor_ref         0.3010
_reflns_number_gt                869
_reflns_number_total             1788
_reflns_threshold_expression     F^2^>2.0\s(F^2^)
_cod_data_source_file            jp5b02850_si_001.cif
_cod_data_source_block           3-141016
_cod_depositor_comments
'Adding full bibliography for 1520381--1520384.cif.'
_cod_database_code               1520381