Synthesis, crystal structure of α-Keggin heteropolymolybdates with pyridine-2,6-dicarboxylate based frameworks, and associated RhB photocatalytic degradation and 2D-IR COS tests.
Chen, Xiang-Yi; Chen, Yi-Ping; Xia, Ze-Min; Hu, Heng-Bin; Sun, Yan-Qiong; Huang, Wei-Yuan; Dalton transactions (Cambridge, England : 2003) 41 (2012) 10035–10042; doi:10.1039/c2dt00001f

data_7019651
_publ_section_title
;
 Synthesis, crystal structure of \a-Keggin heteropolymolybdates with
 pyridine-2,6-dicarboxylate based frameworks, and associated RhB
 photocatalytic degradation and 2D-IR COS tests.
;
_journal_issue                   33
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              10035
_journal_page_last               10042
_journal_paper_doi               10.1039/c2dt00001f
_journal_volume                  41
_journal_year                    2012
_chemical_formula_sum            'C28 H48 Mo12 N4 O74 Si Sm4'
_chemical_formula_weight         3405.52
_chemical_name_systematic
;
?
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                77.35(3)
_cell_angle_beta                 62.91(3)
_cell_angle_gamma                62.40(3)
_cell_formula_units_Z            2
_cell_length_a                   16.473(3)
_cell_length_b                   17.068(3)
_cell_length_c                   17.384(3)
_cell_measurement_reflns_used    15537
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      27.50
_cell_measurement_theta_min      3.01
_cell_volume                     3856.1(19)
_computing_cell_refinement       PROCESS-AUTO
_computing_data_collection       'PROCESS-AUTO (Rigaku, 1998)'
_computing_data_reduction        'CrystalStructure (Rigaku/MSC, 2002)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2001)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.961
_diffrn_measured_fraction_theta_max 0.961
_diffrn_measurement_device_type  'Rigaku Saturn 724 CCD'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotor target'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0443
_diffrn_reflns_av_sigmaI/netI    0.0595
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            32665
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         3.01
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    5.018
_exptl_absorpt_correction_T_max  0.367
_exptl_absorpt_correction_T_min  0.103
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    2.933
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             3204
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.20
_refine_diff_density_max         2.290
_refine_diff_density_min         -2.117
_refine_diff_density_rms         0.412
_refine_ls_extinction_coef       0.00114(11)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.031
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1109
_refine_ls_number_reflns         17003
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.031
_refine_ls_R_factor_all          0.0708
_refine_ls_R_factor_gt           0.0610
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1200P)^2^+30.3810P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1729
_refine_ls_wR_factor_ref         0.2039
_reflns_number_gt                15537
_reflns_number_total             17695
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2dt00001f.txt
_cod_data_source_block           compound2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7019651