Probing the surface polarity of inorganic oxides using merocyanine-type dyes derived from barbituric acid
Seifert, Susan; Seifert, Andreas; Brunklaus, Gunther; Hofmann, Katja; Rüffer, Tobias; Lang, Heinrich; Spange, Stefan; New Journal of Chemistry 36 (2012) 674–; doi:10.1039/c2nj20835k

data_7052849
_publ_section_title
;
 Probing the surface polarity of inorganic oxides using merocyanine-type
 dyes derived from barbituric acid
;
_journal_issue                   3
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              674
_journal_paper_doi               10.1039/c2nj20835k
_journal_volume                  36
_journal_year                    2012
_chemical_formula_moiety         'C15 H15 N3 O3'
_chemical_formula_sum            'C15 H15 N3 O3'
_chemical_formula_weight         285.30
_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                 91.668(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   4.5663(2)
_cell_length_b                   9.6254(5)
_cell_length_c                   30.3857(14)
_cell_measurement_reflns_used    4606
_cell_measurement_temperature    105
_cell_measurement_theta_max      65.3303
_cell_measurement_theta_min      4.3913
_cell_volume                     1334.96(11)
_computing_cell_refinement
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.46 (release 27-08-2009 CrysAlis171 .NET)
(compiled Aug 27 2009,17:19:36)
;
_computing_data_collection
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.46 (release 27-08-2009 CrysAlis171 .NET)
(compiled Aug 27 2009,17:19:36)
;
_computing_data_reduction
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.46 (release 27-08-2009 CrysAlis171 .NET)
(compiled Aug 27 2009,17:19:36)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      105
_diffrn_measured_fraction_theta_full 0.982
_diffrn_measured_fraction_theta_max 0.982
_diffrn_measurement_device_type  'oxford gemini s'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0500
_diffrn_reflns_av_sigmaI/netI    0.0349
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            8822
_diffrn_reflns_theta_full        65.53
_diffrn_reflns_theta_max         65.53
_diffrn_reflns_theta_min         4.82
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 50
_diffrn_standards_interval_time  5
_diffrn_standards_number         2
_exptl_absorpt_coefficient_mu    0.836
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.58009
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.46 (release 27-08-2009 CrysAlis171 .NET)
(compiled Aug 27 2009,17:19:36)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            purple
_exptl_crystal_density_diffrn    1.420
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             600
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.269
_refine_diff_density_min         -0.316
_refine_diff_density_rms         0.070
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.958
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     198
_refine_ls_number_reflns         2277
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.958
_refine_ls_R_factor_all          0.0694
_refine_ls_R_factor_gt           0.0565
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1211P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1460
_refine_ls_wR_factor_ref         0.1530
_reflns_number_gt                1713
_reflns_number_total             2277
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2nj20835k.txt
_cod_data_source_block           wolf2
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               7052849