Titanium-oxo-Clusters with Dicarboxylates: Single-Crystal Structure and Photochromic Effect
Yin-Yin Wu; Wen Luo; Yu-Hong Wang; Ya-Yang Pu; Xiang Zhang; Li-Sheng You; Qin-Yu Zhu; Jie Dai; Inorganic Chemistry 51 (2012) 8982–8988; doi:10.1021/ic301092b

data_4330070
_publ_section_title
;
 Titanium-oxo-Clusters with Dicarboxylates: Single-Crystal Structure and
 Photochromic Effect
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              8982
_journal_page_last               8988
_journal_paper_doi               10.1021/ic301092b
_journal_volume                  51
_journal_year                    2012
_chemical_formula_sum            'C174 H318 O75 Ti18'
_chemical_formula_weight         4471.91
_chemical_name_systematic
; 
 ? 
;
_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                 90.244(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   17.1044(10)
_cell_length_b                   39.111(2)
_cell_length_c                   34.202(2)
_cell_measurement_reflns_used    96283
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      3.0
_cell_volume                     22880(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      193(2)
_diffrn_detector_area_resol_mean 14.63
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Rigaku Saturn'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0735
_diffrn_reflns_av_sigmaI/netI    0.0965
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       43
_diffrn_reflns_limit_k_min       -46
_diffrn_reflns_limit_l_max       40
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            106645
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.02
_exptl_absorpt_coefficient_mu    0.666
_exptl_absorpt_correction_T_max  0.8251
_exptl_absorpt_correction_T_min  0.7317
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Jacobson, R. (1998) Private communication '
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.298
_exptl_crystal_description       Prism
_exptl_crystal_F_000             9432
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.50
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.675
_refine_diff_density_min         -0.572
_refine_diff_density_rms         0.070
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.123
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     2486
_refine_ls_number_reflns         40004
_refine_ls_number_restraints     10
_refine_ls_restrained_S_all      1.128
_refine_ls_R_factor_all          0.1272
_refine_ls_R_factor_gt           0.0892
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0059P)^2^+52.2799P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1329
_refine_ls_wR_factor_ref         0.1503
_reflns_number_gt                28578
_reflns_number_total             40004
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic301092b_si_002_2.cif
_cod_data_source_block           2
_cod_original_sg_symbol_Hall     '-P 2yn  '
_cod_original_sg_symbol_H-M      'P 21/n '
_cod_original_formula_sum        'C174 H318 O75 Ti18 '
_cod_database_code               4330070