Unusual centrosymmetric structure of [<i>M</i>(18-crown-6)]^+^ (<i>M</i> = Rb, Cs and NH~4~) complexes stabilized in an environment of hexachloridoantimonate(V) anions
Ponomarova, Vira V.; Rusanova, Julia A.; Rusanov, Eduard B.; Domasevitch, Konstantin V.; Acta Crystallographica Section C 71 (2015) –; doi:10.1107/S2053229615015430

data_2020109
_publ_section_title
;
 Unusual centrosymmetric structure of [<i>M</i>(18-crown-6)]^+^ (<i>M</i>
 = Rb, Cs and NH~4~) complexes stabilized in an environment of
 hexachloridoantimonate(V) anions
;
_journal_coeditor_code           EG3188
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first
;
;
_journal_paper_doi               10.1107/S2053229615015430
_journal_volume                  71
_journal_year                    2015
_chemical_formula_iupac          '[(N H4) (C12 H24 O6)] , [Sb Cl6]'
_chemical_formula_moiety         'N H4 +, C12 H24 O6, Sb Cl6 -'
_chemical_formula_sum            'C12 H28 Cl6 N O6 Sb'
_chemical_formula_weight         616.80
_chemical_name_systematic
;
Ammonium hexachloridoantimonate(V)--1,4,7,10,13,16-hexaoxacyclooctadecane
(1/1)
;
_space_group_IT_number           148
_space_group_name_Hall           '-R 3'
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_Hall  '-R 3'
_symmetry_space_group_name_H-M   'R -3 :H'
_atom_sites_solution_hydrogens   difmap
_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                120.00
_cell_formula_units_Z            3
_cell_length_a                   14.1069(9)
_cell_length_b                   14.1069(9)
_cell_length_c                   10.1908(8)
_cell_measurement_reflns_used    24
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      17.22
_cell_measurement_theta_min      12.56
_cell_volume                     1756.3(2)
_computing_cell_refinement
;
CAD4 Express (Enraf--Nonius, 1994)
;
_computing_data_collection
;
CAD4 Express (Enraf--Nonius, 1994)
;
_computing_data_reduction
;
XCAD4 (Harms & Wocadlo, 1995)
;
_computing_molecular_graphics
;
DIAMOND (Brandenburg, 1999)
;
_computing_publication_material
;
SHELXL97 (Sheldrick, 2008)
;
_computing_structure_refinement
;
SHELXL97 (Sheldrick, 2008)
;
_computing_structure_solution
;
SHELXS97 (Sheldrick, 2008)
;
_diffrn_ambient_temperature      223(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Enraf--Nonius CAD4'
_diffrn_measurement_method       'non-profiled \w--2\q scans'
_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  0.0368
_diffrn_reflns_av_sigmaI/netI    0.0260
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            2227
_diffrn_reflns_theta_full        25.31
_diffrn_reflns_theta_max         25.31
_diffrn_reflns_theta_min         2.60
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  120
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    1.889
_exptl_absorpt_correction_T_max  0.7638
_exptl_absorpt_correction_T_min  0.6821
_exptl_absorpt_correction_type   psi-scan
_exptl_absorpt_process_details
;
(North <i>et al.</i>,  1968)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.750
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             924
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.360
_refine_diff_density_min         -0.445
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.135
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     42
_refine_ls_number_reflns         708
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.135
_refine_ls_R_factor_all          0.0236
_refine_ls_R_factor_gt           0.0217
_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^)+(0.0283P)^2^+1.1402P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0547
_refine_ls_wR_factor_ref         0.0556
_reflns_number_gt                673
_reflns_number_total             708
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            eg3188sup1.cif
_cod_data_source_block           3
_cod_original_sg_symbol_H-M      'R -3'
_cod_database_code               2020109
_cod_database_fobs_code          2020109