The Crystalline Nanocluster Phase as a Medium for Structural and Spectroscopic Studies of Light Absorption of Photosensitizer Dyes on Semiconductor Surfaces
Jason B. Benedict; Philip Coppens; Journal of the American Chemical Society 132 (2010) 2938–2944; doi:10.1021/ja909600w

data_4101997
_publ_section_title
;
 The Crystalline Nanocluster Phase as a Medium for Structural and
 Spectroscopic Studies of Light Absorption of Photosensitizer Dyes on
 Semiconductor Surfaces
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              2938
_journal_page_last               2944
_journal_paper_doi               10.1021/ja909600w
_journal_volume                  132
_journal_year                    2010
_chemical_formula_moiety         'C54 H66 N6 O24 Ti6, 2(C7 H8)'
_chemical_formula_sum            'C68 H82 N6 O24 Ti6'
_chemical_formula_weight         1654.80
_space_group_IT_number           148
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_Hall  '-R 3'
_symmetry_space_group_name_H-M   'R -3 :H'
_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                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            9
_cell_length_a                   29.6492(16)
_cell_length_b                   29.6492(16)
_cell_length_c                   26.4727(15)
_cell_measurement_reflns_used    350
_cell_measurement_temperature    90(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      1.10
_cell_volume                     20153.7(19)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      90(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0640
_diffrn_reflns_av_sigmaI/netI    0.0293
_diffrn_reflns_limit_h_max       38
_diffrn_reflns_limit_h_min       -38
_diffrn_reflns_limit_k_max       38
_diffrn_reflns_limit_k_min       -38
_diffrn_reflns_limit_l_max       34
_diffrn_reflns_limit_l_min       -34
_diffrn_reflns_number            115928
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         1.10
_exptl_absorpt_coefficient_mu    0.576
_exptl_absorpt_correction_T_max  0.8936
_exptl_absorpt_correction_T_min  0.8936
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.227
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       cut-block
_exptl_crystal_F_000             7704
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         1.672
_refine_diff_density_min         -0.909
_refine_diff_density_rms         0.165
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.126
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     516
_refine_ls_number_reflns         10274
_refine_ls_number_restraints     42
_refine_ls_restrained_S_all      1.129
_refine_ls_R_factor_all          0.0808
_refine_ls_R_factor_gt           0.0511
_refine_ls_shift/su_max          0.017
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0866P)^2^+99.7388P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1491
_refine_ls_wR_factor_ref         0.1794
_reflns_number_gt                7695
_reflns_number_total             10274
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja909600w_si_005.cif
_cod_data_source_block           'data_0m'
_cod_original_sg_symbol_H-M      'R -3'
_cod_database_code               4101997