New ordered phase in the quasi-binary UAl~3~‒USi~3~ system
Rafailov, Gennady; Dahan, Isaac; Meshi, Louisa; Acta Crystallographica Section B 70 (2014) 580–585; doi:10.1107/S2052520614003801

data_2105816
_publ_section_title
;
 New ordered phase in the quasi-binary UAl~3~--USi~3~ system
;
_journal_coeditor_code           HW5030
_journal_issue                   3
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              580
_journal_page_last               585
_journal_paper_doi               10.1107/S2052520614003801
_journal_volume                  70
_journal_year                    2014
_chemical_formula_sum            'Al28 Si20 U16'
_chemical_formula_weight         5125.72
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           139
_symmetry_space_group_name_Hall  '-I 4 2'
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_cell_angle_gamma                90.00
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_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_wavelength     1.54060
_diffrn_reflns_av_R_equivalents  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0003
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_diffrn_reflns_limit_l_min       0
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_diffrn_reflns_theta_full        73.79
_diffrn_reflns_theta_max         73.79
_diffrn_reflns_theta_min         5.26
_exptl_crystal_density_diffrn    7.268
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             2116
_refine_diff_density_max         5.622
_refine_diff_density_min         -3.912
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   2.034
_refine_ls_hydrogen_treatment    mixed
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_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^)+(0.0936P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
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_refine_ls_wR_factor_ref         0.1899
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_reflns_threshold_expression     >2sigma(I)
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_cod_depositor_comments          'Adding full bibliography for 2105816.cif.'
_cod_original_cell_volume        1171.1(5)
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