New photoresponsive charge-transfer spiropyran/polyoxometalate assemblies with highly tunable optical properties
Khadija Hakouk; Olivier Oms; Anne Dolbecq; Jerome Marrot; Ali Saad; Pierre Mialane; Houda El Bekkachi; Stephane Jobic; Philippe Deniard; Remi Dessapt; Journal of Materials Chemistry C 2 (2014) 1628–1641; doi:10.1039/C3TC31992J

data_7233632
_publ_section_title
;
 New photoresponsive charge-transfer spiropyran/polyoxometalate assemblies
 with highly tunable optical properties
;
_journal_name_full               'Journal of Materials Chemistry C'
_journal_page_first              1628
_journal_page_last               1641
_journal_paper_doi               10.1039/C3TC31992J
_journal_volume                  2
_journal_year                    2014
_chemical_formula_sum            'C84 H98 Mo8 N10 O30'
_chemical_formula_weight         2495.24
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 100.157(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   16.176(4)
_cell_length_b                   17.079(4)
_cell_length_c                   35.499(8)
_cell_measurement_reflns_used    12341
_cell_measurement_temperature    273(2)
_cell_measurement_theta_max      25
_cell_measurement_theta_min      1.17
_cell_volume                     9654(4)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      273(2)
_diffrn_detector_area_resol_mean 512x512
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0995
_diffrn_reflns_av_sigmaI/netI    0.1062
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       42
_diffrn_reflns_limit_l_min       -42
_diffrn_reflns_number            25496
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.17
_exptl_absorpt_coefficient_mu    1.086
_exptl_absorpt_correction_T_max  0.9786
_exptl_absorpt_correction_T_min  0.8121
_exptl_absorpt_correction_type   multi-scans
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.717
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       parallelepiped
_exptl_crystal_F_000             4992
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.02
_refine_diff_density_max         1.372
_refine_diff_density_min         -1.624
_refine_diff_density_rms         0.442
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     600
_refine_ls_number_reflns         8478
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.054
_refine_ls_R_factor_all          0.1365
_refine_ls_R_factor_gt           0.0901
_refine_ls_shift/su_max          0.015
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1041P)^2^+184.7061P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2299
_refine_ls_wR_factor_ref         0.2512
_reflns_number_gt                5404
_reflns_number_total             8478
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            1000001.cif
_cod_data_source_block           PCOD1000001
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7233632