X-ray Crystal Structures of α-KrF2, [KrF][MF6] (M = As, Sb, Bi), [Kr2F3][SbF6].KrF2, [Kr2F3]2[SbF6]2.KrF2, and [Kr2F3][AsF6].[KrF][AsF6]; Synthesis and Characterization of [Kr2F3][PF6].nKrF2; and Theoretical Studies of KrF2, KrF+, Kr2F3+, and the [KrF][MF6] (M = P, As, Sb, Bi) Ion Pairs
John F. Lehmann; David A. Dixon; Gary J. Schrobilgen; Inorganic Chemistry 40 (2001) 3002–3017; doi:10.1021/ic001167w

data_4319841
_publ_section_title
;
 X-ray Crystal Structures of \a-KrF2, [KrF][MF6] (M = As, Sb, Bi),
 [Kr2F3][SbF6].KrF2, [Kr2F3]2[SbF6]2.KrF2, and [Kr2F3][AsF6].[KrF][AsF6];
 Synthesis and Characterization of [Kr2F3][PF6].nKrF2; and Theoretical
 Studies of KrF2, KrF+, Kr2F3+, and the [KrF][MF6] (M = P, As, Sb, Bi) Ion
 Pairs
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              3002
_journal_page_last               3017
_journal_paper_doi               10.1021/ic001167w
_journal_volume                  40
_journal_year                    2001
_chemical_formula_sum            'F7 Kr Sb'
_chemical_formula_weight         338.55
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 94.693(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   5.2922(6)
_cell_length_b                   10.4444(13)
_cell_length_c                   10.7959(13)
_cell_measurement_temperature    160(2)
_cell_volume                     594.73(12)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      160(2)
_diffrn_measured_fraction_theta_full 0.938
_diffrn_measured_fraction_theta_max 0.938
_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  0.0478
_diffrn_reflns_av_sigmaI/netI    0.0512
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            5656
_diffrn_reflns_theta_full        27.54
_diffrn_reflns_theta_max         27.54
_diffrn_reflns_theta_min         2.72
_exptl_absorpt_coefficient_mu    12.093
_exptl_crystal_density_diffrn    3.781
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             600
_refine_diff_density_max         0.719
_refine_diff_density_min         -0.790
_refine_diff_density_rms         0.177
_refine_ls_extinction_coef       0.0027(2)
_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   0.920
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     83
_refine_ls_number_reflns         1287
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.920
_refine_ls_R_factor_all          0.0455
_refine_ls_R_factor_gt           0.0266
_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^)+(0.0236P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0496
_refine_ls_wR_factor_ref         0.0527
_reflns_number_gt                995
_reflns_number_total             1287
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic001167w_3.cif
_cod_data_source_block           KrF+SbF6-
_cod_database_code               4319841