Presence and absence of excited state intramolecular charge transfer with the six isomers of dicyano-N,N-dimethylaniline and dicyano-(N-methyl-N-isopropyl)aniline.
Galievsky, Victor A.; Druzhinin, Sergey I.; Demeter, Attila; Kovalenko, Sergey A.; Senyushkina, Tamara; Mayer, Peter; Zachariasse, Klaas A.; The journal of physical chemistry. A 115 (2011) 10823–10845; doi:10.1021/jp2045614

data_1501753
_publ_section_title
;
 Presence and absence of excited state intramolecular charge transfer with
 the six isomers of dicyano-N,N-dimethylaniline and
 dicyano-(N-methyl-N-isopropyl)aniline.
;
_journal_issue                   40
_journal_name_full               'The journal of physical chemistry. A'
_journal_page_first              10823
_journal_page_last               10845
_journal_paper_doi               10.1021/jp2045614
_journal_volume                  115
_journal_year                    2011
_chemical_formula_sum            'C12 H13 N3'
_chemical_formula_weight         199.25
_space_group_IT_number           14
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_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                 101.686(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.2495(7)
_cell_length_b                   6.8618(4)
_cell_length_c                   15.9772(9)
_cell_measurement_temperature    173(2)
_cell_volume                     1100.39(12)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_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  0.0273
_diffrn_reflns_av_sigmaI/netI    0.0386
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            7677
_diffrn_reflns_theta_full        26.30
_diffrn_reflns_theta_max         26.30
_diffrn_reflns_theta_min         4.19
_exptl_absorpt_coefficient_mu    0.074
_exptl_crystal_density_diffrn    1.203
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             424
_refine_diff_density_max         0.179
_refine_diff_density_min         -0.137
_refine_diff_density_rms         0.033
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.878
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     139
_refine_ls_number_reflns         2234
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.878
_refine_ls_R_factor_all          0.0631
_refine_ls_R_factor_gt           0.0377
_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^)+(0.0560P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0900
_refine_ls_wR_factor_ref         0.0966
_reflns_number_gt                1401
_reflns_number_total             2234
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jp2045614_si_006.cif
_cod_data_source_block           no219
_cod_database_code               1501753