Solid-state photopolymerization of a photochromic hybrid based on Keggin tungstophosphates
Zhang, Li-Zhi; Gu, Wen; Liu, Xin; Dong, Zhili; Li, Bing; CrystEngComm 10 (2008) 652–; doi:10.1039/b718523e

data_7201890
_publ_section_title
;
 Solid-state photopolymerization of a photochromic hybrid based on
 Keggin tungstophosphates
;
_journal_issue                   6
_journal_name_full               CrystEngComm
_journal_page_first              652
_journal_paper_doi               10.1039/b718523e
_journal_volume                  10
_journal_year                    2008
_chemical_formula_sum            'C30 H54 Gd N6 O46 P W12'
_chemical_formula_weight         3629.21
_chemical_name_systematic
;
?
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_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
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 107.460(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   22.058(7)
_cell_length_b                   12.811(7)
_cell_length_c                   24.390(9)
_cell_measurement_reflns_used    7155
_cell_measurement_temperature    294(2)
_cell_measurement_theta_max      27.78
_cell_measurement_theta_min      2.18
_cell_volume                     6575(5)
_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_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0547
_diffrn_reflns_av_sigmaI/netI    0.0558
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            17152
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         1.86
_exptl_absorpt_coefficient_mu    22.019
_exptl_absorpt_correction_T_max  0.1956
_exptl_absorpt_correction_T_min  0.1096
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            BLUE
_exptl_crystal_density_diffrn    3.667
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       BLOCK
_exptl_crystal_F_000             6444
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.11
_refine_diff_density_max         2.096
_refine_diff_density_min         -1.956
_refine_diff_density_rms         0.321
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.142
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     615
_refine_ls_number_reflns         5775
_refine_ls_number_restraints     769
_refine_ls_restrained_S_all      1.073
_refine_ls_R_factor_all          0.0599
_refine_ls_R_factor_gt           0.0523
_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^)+(0.0250P)^2^+528.1191P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1212
_refine_ls_wR_factor_ref         0.1245
_reflns_number_gt                5064
_reflns_number_total             5775
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b718523e.txt
_cod_data_source_block           2
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_exptl_absorpt_correction_type' value 'multi-Scan' changed
to 'multi-scan' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from
2010-06-29.

'_refine_ls_hydrogen_treatment' value 'Constr' changed to
'constr' according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'none' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_cell_volume        6574(5)
_cod_original_sg_symbol_H-M      'C2/c '
_cod_database_code               7201890