Bis(tetramethylammonium) di-μ-fluoro-bis[aquatetrafluorohafnate(IV)]
Gerasimenko, Andrey V.; Davidovich, Ruven L.; Tkachev, Valery V.; Ng, Seik Weng; Acta Crystallographica Section E 62 (2006) m196–m197; doi:10.1107/S1600536805042479

data_2207984
_publ_section_title
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 Bis(tetramethylammonium) di-\m-fluoro-bis[aquatetrafluorohafnate(IV)]
;
_journal_coeditor_code           BV6041
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              m196
_journal_page_last               m197
_journal_paper_doi               10.1107/S1600536805042479
_journal_volume                  62
_journal_year                    2006
_chemical_formula_iupac          '(C4 H12 N)2] [Hf2 F10 (H2 O)2]'
_chemical_formula_moiety         '2C4 H12 N + , H4 O2 F10 Hf2 2-'
_chemical_formula_sum            'C8 H28 F10 Hf2 N2 O2'
_chemical_formula_weight         731.30
_chemical_name_systematic
;
Bis(tetramethylammonium) di-\m-fluoro-bis[aquatetrafluorohafnate(IV)]
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.9190(10)
_cell_length_b                   9.6870(10)
_cell_length_c                   19.656(2)
_cell_measurement_reflns_used    754
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      44.7
_cell_measurement_theta_min      27.0
_cell_volume                     1888.7(3)
_computing_cell_refinement       'SAINT (Bruker, 2000)'
_computing_data_collection       'SMART (Bruker, 1998)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'ORTEPII (Johnson, 1976)'
_computing_publication_material  SHELXS97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      295(2)
_diffrn_detector_area_resol_mean 8.33
_diffrn_measured_fraction_theta_full 1.00
_diffrn_measured_fraction_theta_max 1.00
_diffrn_measurement_device_type  'Bruker SMART 1000 area-detector'
_diffrn_measurement_method       '\f and \w'
_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  0.040
_diffrn_reflns_av_sigmaI/netI    0.028
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            11359
_diffrn_reflns_theta_full        27.5
_diffrn_reflns_theta_max         27.6
_diffrn_reflns_theta_min         2.9
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    11.083
_exptl_absorpt_correction_T_max  0.170
_exptl_absorpt_correction_T_min  0.141
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    2.572
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Sphere
_exptl_crystal_F_000             1360
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.91
_refine_diff_density_min         -0.81
_refine_ls_extinction_coef       0.00260(10)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 1997)'
_refine_ls_goodness_of_fit_ref   1.09
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     118
_refine_ls_number_reflns         2168
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.09
_refine_ls_R_factor_all          0.025
_refine_ls_R_factor_gt           0.021
_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^)+(0.0221P)^2^+3.7908P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.053
_refine_ls_wR_factor_ref         0.055
_reflns_number_gt                1942
_reflns_number_total             2168
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            bv6041.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
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_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' 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 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        1888.6(4)
_cod_database_code               2207984