The key role of -CH3 steric hindrance in bis(pyrazolyl) ligand on polyoxometalate-based compounds.
Tian, Ai-Xiang; Yang, Yang; Ying, Jun; Li, Na; Lin, Xiao-Ling; Zhang, Ju-Wen; Wang, Xiu-Li; Dalton transactions (Cambridge, England : 2003) 43 (2014) 8405–8413; doi:10.1039/c4dt00107a

data_7029890
_publ_section_title
;
 The key role of -CH3 steric hindrance in bis(pyrazolyl) ligand on
 polyoxometalate-based compounds.
;
_journal_issue                   22
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              8405
_journal_page_last               8413
_journal_paper_doi               10.1039/c4dt00107a
_journal_volume                  43
_journal_year                    2014
_chemical_formula_sum            'C22 H42 Ag N8 O44 P W12'
_chemical_formula_weight         3467
_chemical_name_systematic
; 
 ? 
;
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_atom_sites_solution_secondary   difmap
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_cell_angle_beta                 89.984(5)
_cell_angle_gamma                78.821(5)
_cell_formula_units_Z            2
_cell_length_a                   12.863(5)
_cell_length_b                   12.959(5)
_cell_length_c                   19.517(5)
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_cell_measurement_theta_max      26.42
_cell_measurement_theta_min      1.61
_cell_volume                     3149.7(19)
_computing_data_collection       'Bruker XSCANS'
_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      293(2)
_diffrn_measured_fraction_theta_full 0.980
_diffrn_measured_fraction_theta_max 0.980
_diffrn_measurement_device_type  'Bruker P4'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0441
_diffrn_reflns_av_sigmaI/netI    0.1188
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -24
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_diffrn_reflns_theta_max         26.42
_diffrn_reflns_theta_min         1.61
_diffrn_standards_decay_%        none
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_exptl_crystal_colour            yellow
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_exptl_crystal_density_method    'not measured'
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_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.18
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_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
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'calc w=1/[\s^2^(Fo^2^)+(0.0687P)^2^+164.3226P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
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_reflns_threshold_expression     >2sigma(I)
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'Adding full bibliography for 7029889--7029892.cif.'
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7029890