The first observation of azo-hydrazone and cis-trans tautomerisms for disperse yellow dyes and their nickel(II) and copper(II) complexes.
You, Wei; Zhu, Hao-Yu; Huang, Wei; Hu, Bin; Fan, Ying; You, Xiao-Zeng; Dalton transactions (Cambridge, England : 2003) 39 (2010) 7876–7880; doi:10.1039/c0dt00101e

data_7025988
_publ_section_title
;
 The first observation of azo-hydrazone and cis-trans tautomerisms for
 disperse yellow dyes and their nickel(II) and copper(II) complexes.
;
_journal_issue                   34
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              7876
_journal_page_last               7880
_journal_paper_doi               10.1039/c0dt00101e
_journal_volume                  39
_journal_year                    2010
_chemical_formula_moiety         'C15 H12 Cl2 N4 O2'
_chemical_formula_sum            'C15 H12 Cl2 N4 O2'
_chemical_formula_weight         351.19
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_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                 94.617(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   7.3689(16)
_cell_length_b                   20.067(4)
_cell_length_c                   21.444(5)
_cell_measurement_reflns_used    649
_cell_measurement_temperature    291(2)
_cell_measurement_theta_max      16.774
_cell_measurement_theta_min      2.243
_cell_volume                     3160.7(12)
_computing_cell_refinement       SMART
_computing_data_collection       'SMART (BRUKER 2000)'
_computing_data_reduction        'SAINT (BRUKER 2000)'
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      291(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker CCD area detector'
_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  0.1415
_diffrn_reflns_av_sigmaI/netI    0.3013
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            15882
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.91
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.425
_exptl_absorpt_correction_T_max  0.9668
_exptl_absorpt_correction_T_min  0.9012
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, Bruker(2000)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.476
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1440
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.437
_refine_diff_density_min         -0.317
_refine_diff_density_rms         0.058
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.667
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     419
_refine_ls_number_reflns         5571
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.667
_refine_ls_R_factor_all          0.2379
_refine_ls_R_factor_gt           0.0549
_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^)+(0.0106P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0811
_refine_ls_wR_factor_ref         0.1069
_reflns_number_gt                1416
_reflns_number_total             5571
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0dt00101e.txt
_cod_data_source_block           1
_cod_original_cell_volume        3160.5(12)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7025988