Synthesis, photochromic properties and thermal bleaching kinetics of pyrazolone phenylsemicarbazones containing a thiophene ring
Sun, Hubin; Liu, Lang; Wu, Dongling; Jia, Dianzeng; Guo, Jixi; New Journal of Chemistry 37 (2013) 2351–; doi:10.1039/c3nj00241a

data_7054117
_publ_section_title
;
 Synthesis, photochromic properties and thermal bleaching kinetics of
 pyrazolone phenylsemicarbazones containing a thiophene ring
;
_journal_issue                   8
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              2351
_journal_paper_doi               10.1039/c3nj00241a
_journal_volume                  37
_journal_year                    2013
_chemical_formula_sum            'C27 H22 Cl N5 O3 S'
_chemical_formula_weight         532.01
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 104.66(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.380(3)
_cell_length_b                   11.605(2)
_cell_length_c                   19.026(4)
_cell_measurement_temperature    298(2)
_cell_volume                     2644.5(10)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_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  0.0511
_diffrn_reflns_av_sigmaI/netI    0.0405
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            21068
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         2.99
_exptl_absorpt_coefficient_mu    0.262
_exptl_absorpt_correction_T_max  0.9864
_exptl_absorpt_correction_T_min  0.9832
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.336
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             276
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.21
_refine_diff_density_max         0.313
_refine_diff_density_min         -0.413
_refine_diff_density_rms         0.050
_refine_ls_extinction_coef       0.0057(12)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.057
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     347
_refine_ls_number_reflns         4900
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.057
_refine_ls_R_factor_all          0.1096
_refine_ls_R_factor_gt           0.0670
_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^)+(0.0919P)^2^+0.7438P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1671
_refine_ls_wR_factor_ref         0.1844
_reflns_number_gt                3056
_reflns_number_total             4900
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3nj00241a.cif
_cod_data_source_block           a2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/automatic-downloads/retrospective/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_cell_volume        2644.6(9)
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               7054117