Preparation of stable AsBr4+ and I2As-PI3+ salts. Why didn't we succeed to prepare AsI4+ and As2X5+? A combined experimental and theoretical study.
Gonsior, Marcin; Krossing, Ingo; Dalton transactions (Cambridge, England : 2003)  (2005) 1203–1213; doi:10.1039/b417629d

data_7008136
_publ_section_title
;
 Preparation of stable AsBr4+ and I2As-PI3+ salts. Why didn't we
 succeed to prepare AsI4+ and As2X5+? A combined experimental and
 theoretical study.
;
_journal_issue                   7
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              1203
_journal_page_last               1213
_journal_paper_doi               10.1039/b417629d
_journal_year                    2005
_chemical_formula_sum            'C24 H16 Al2 F38 O6'
_chemical_formula_weight         1176.33
_chemical_name_systematic
;
[(RO)2AlF(THF)]2 (R = C(CF3)3)
;
_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                 96.34(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.6522(19)
_cell_length_b                   12.727(3)
_cell_length_c                   15.596(3)
_cell_measurement_reflns_used    3207
_cell_measurement_temperature    100(2)
_cell_volume                     1904.2(7)
_computing_cell_refinement       'CELL (STOE)'
_computing_data_collection       'XPOSE (STOE)'
_computing_data_reduction        'XRED (STOE)'
_computing_molecular_graphics    RESVIEW
_computing_publication_material  RESVIEW
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.928
_diffrn_measured_fraction_theta_max 0.928
_diffrn_measurement_device_type  'IPDS II (STOE)'
_diffrn_measurement_method       'Image Plate Technique'
_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  0.0411
_diffrn_reflns_av_sigmaI/netI    0.0353
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            7799
_diffrn_reflns_theta_full        25.85
_diffrn_reflns_theta_max         25.85
_diffrn_reflns_theta_min         2.07
_exptl_absorpt_coefficient_mu    0.304
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    2.052
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plates
_exptl_crystal_F_000             1152
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.6
_exptl_crystal_size_min          0.8
_refine_diff_density_max         0.266
_refine_diff_density_min         -0.240
_refine_diff_density_rms         0.049
_refine_ls_extinction_coef       0.0004(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.009
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     349
_refine_ls_number_reflns         3426
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.009
_refine_ls_R_factor_all          0.0435
_refine_ls_R_factor_gt           0.0301
_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^)+(0.0446P)^2^+0.1223P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0710
_refine_ls_wR_factor_ref         0.0750
_reflns_number_gt                2749
_reflns_number_total             3426
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b417629d.txt
_cod_data_source_block           p21n
_cod_original_cell_volume        1904.1(7)
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               7008136