Antimony-dependent expansion for the Keggin heteropolyniobate family.
Zhang, Zhe-Yu; Peng, Jun; Shi, Zhen-Yu; Zhou, Wan-Li; Khan, Shifa Ullah; Liu, Hong-Sheng; Chemical communications (Cambridge, England) 51 (2015) 3091–3093; doi:10.1039/c4cc09612f

data_7116216
_publ_section_title
;
 Antimony-dependent expansion for the Keggin heteropolyniobate family.
;
_journal_issue                   15
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              3091
_journal_page_last               3093
_journal_paper_doi               10.1039/c4cc09612f
_journal_volume                  51
_journal_year                    2015
_chemical_formula_moiety
'H As Nb12 O40 Sb2, 4(C4 H18 Cu N4 O), 22(H2 O)'
_chemical_formula_sum            'C16 H117 As Cu4 N16 Nb12 O66 Sb2'
_chemical_formula_weight         3277.76
_chemical_name_systematic
; 
 ? 
;
_chemical_properties_physical    Efflorescent
_space_group_IT_number           88
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  '-I 4ad'
_symmetry_space_group_name_H-M   'I 41/a :2'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_block_doi                 10.5517/cc138bqf
_audit_creation_method           SHELXL-97
_audit_update_record
;
2014-08-23 deposited with the CCDC.
2015-01-02 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   25.6050(5)
_cell_length_b                   25.6050(5)
_cell_length_c                   16.1890(5)
_cell_measurement_temperature    293(2)
_cell_volume                     10613.8(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      293(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         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0343
_diffrn_reflns_av_sigmaI/netI    0.0295
_diffrn_reflns_limit_h_max       25
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -30
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            18769
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         3.18
_exptl_absorpt_coefficient_mu    2.927
_exptl_absorpt_correction_T_max  0.839
_exptl_absorpt_correction_T_min  0.618
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    2.051
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       platelet
_exptl_crystal_F_000             6384
_exptl_crystal_size_max          0.17
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.06
_refine_diff_density_max         2.238
_refine_diff_density_min         -0.589
_refine_diff_density_rms         0.164
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.071
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     287
_refine_ls_number_reflns         4641
_refine_ls_number_restraints     30
_refine_ls_restrained_S_all      1.080
_refine_ls_R_factor_all          0.0514
_refine_ls_R_factor_gt           0.0402
_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^)+(0.0598P)^2^+167.8265P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1207
_refine_ls_wR_factor_ref         0.1295
_reflns_number_gt                3861
_reflns_number_total             4641
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4cc09612f2.cif
_cod_data_source_block           shelxl
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from
2011-04-26.

'_exptl_absorpt_correction_type' value 'Multi-scan'
changed to 'multi-scan' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2935 2014-11-11 08:27:57Z andrius 

 Adding full bibliography for 7116213--7116221.cif.
;
_cod_original_sg_symbol_H-M      I4(1)/a
_cod_database_code               7116216