[(C~2~H~5~)~4~N]~4~[Mo~8~O~26~]: a redetermination and correction
G. Kalpana; K. Vidyasagar; Acta Crystallographica Section E 61 (2005) m1885–m1886; doi:10.1107/S1600536805026899

data_2206699
_publ_section_title
;
 [(C~2~H~5~)~4~N]~4~[Mo~8~O~26~]: a redetermination and correction
;
_journal_coeditor_code           HB6251
_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              m1885
_journal_page_last               m1886
_journal_paper_doi               10.1107/S1600536805026899
_journal_volume                  61
_journal_year                    2005
_chemical_formula_iupac          '(C8 H20 N)4 [Mo8 O26]'
_chemical_formula_moiety         '4C8 H20 N +, Mo8 O26 4-'
_chemical_formula_sum            'C32 H80 Mo8 N4 O26'
_chemical_formula_weight         1704.52
_chemical_name_systematic
;
tetraethylammonium hexa-\m~3~-oxo-hexa-\m~2~oxo-tetradecaoxooctamolybdate
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 105.04(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   11.836(6)
_cell_length_b                   20.032(7)
_cell_length_c                   12.089(12)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      15
_cell_measurement_theta_min      10
_cell_volume                     2768(3)
_computing_cell_refinement       'CAD-4 Software'
_computing_data_collection       'CAD-4 Software (Enraf--Nonius, 1989)'
_computing_data_reduction        'XCAD4 (WinGX; Farrugia, 1999)'
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 1997)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS86 (Sheldrick, 1985)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Enraf--Nonius CAD-4 diffractometer'
_diffrn_measurement_method       \w--2\q
_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  0.0201
_diffrn_reflns_av_sigmaI/netI    0.0389
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            5097
_diffrn_reflns_theta_full        24.97
_diffrn_reflns_theta_max         24.97
_diffrn_reflns_theta_min         2.02
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  60
_diffrn_standards_number         2
_exptl_absorpt_coefficient_mu    1.831
_exptl_absorpt_correction_T_max  0.693
_exptl_absorpt_correction_T_min  0.550
_exptl_absorpt_correction_type   psi-scan
_exptl_absorpt_process_details   '(North et al., 1968)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.045
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1688
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.2
_refine_diff_density_max         2.697
_refine_diff_density_min         -1.067
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.183
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     316
_refine_ls_number_reflns         4851
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.183
_refine_ls_R_factor_all          0.0861
_refine_ls_R_factor_gt           0.0676
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.0376P)^2^+76.2716P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1761
_refine_ls_wR_factor_ref         0.1812
_reflns_number_gt                3807
_reflns_number_total             4851
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            hb6251.cif
_cod_data_source_block           I
_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.

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

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.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2206699
_cod_database_fobs_code          2206699