#------------------------------------------------------------------------------
#$Date: 2016-03-23 22:59:06 +0200 (Wed, 23 Mar 2016) $
#$Revision: 179498 $
#$URL: svn://www.crystallography.net/cod/cif/4/33/95/4339530.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_4339530
loop_
_publ_author_name
'Tobash, Paul H.'
'DiFilippo, Gary'
'Bobev, Svilen'
'Hur, Namjung'
'Thompson, Joe D.'
'Sarrao, John L.'
_publ_section_title
;
 Structure and properties of Gd3Ge4: the orthorhombic RE3Ge4 structures
 revisited (RE = Y, Tb-Tm).
;
_journal_issue                   21
_journal_name_full               'Inorganic chemistry'
_journal_page_first              8690
_journal_page_last               8697
_journal_paper_doi               10.1021/ic7009034
_journal_volume                  46
_journal_year                    2007
_chemical_formula_moiety         4(Ge),3(Er)
_chemical_formula_sum            'Er3 Ge4'
_chemical_formula_weight         792.14
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           63
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-C 2c 2'
_symmetry_space_group_name_H-M   'C m c m'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2007-04-11 # Formatted by publCIF
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   4.0011(14)
_cell_length_b                   10.521(4)
_cell_length_c                   14.074(5)
_cell_measurement_reflns_used    354
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      26.37
_cell_measurement_theta_min      2.89
_cell_volume                     592.5(4)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0760
_diffrn_reflns_av_sigmaI/netI    0.0400
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -4
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            2523
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         2.89
_exptl_absorpt_coefficient_mu    61.860
_exptl_absorpt_correction_T_max  0.1577
_exptl_absorpt_correction_T_min  0.0691
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
SADABS (Sheldrick, 2003)
;
_exptl_crystal_colour            silver
_exptl_crystal_density_diffrn    8.881
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1328
_exptl_crystal_size_max          0.06
_exptl_crystal_size_mid          0.04
_exptl_crystal_size_min          0.03
_refine_diff_density_max         2.076
_refine_diff_density_min         -2.407
_refine_diff_density_rms         0.423
_refine_ls_extinction_coef       0.00128(9)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc²λ³/sin(2θ)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.052
_refine_ls_matrix_type           full
_refine_ls_number_parameters     28
_refine_ls_number_reflns         354
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.052
_refine_ls_R_factor_all          0.0320
_refine_ls_R_factor_gt           0.0252
_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/[σ²(Fo²)+(0.0252P)²+0.0000P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0526
_refine_ls_wR_factor_ref         0.0544
_reflns_number_gt                312
_reflns_number_total             354
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic7009034-file003.cif
_cod_data_source_block           Er3Ge4
_cod_original_cell_volume        592.4(4)
_cod_database_code               4339530
loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x, -y, z+1/2'
'-x, y, -z+1/2'
'x, -y, -z'
'x+1/2, y+1/2, z'
'-x+1/2, -y+1/2, z+1/2'
'-x+1/2, y+1/2, -z+1/2'
'x+1/2, -y+1/2, -z'
'-x, -y, -z'
'x, y, -z-1/2'
'x, -y, z-1/2'
'-x, y, z'
'-x+1/2, -y+1/2, -z'
'x+1/2, y+1/2, -z-1/2'
'x+1/2, -y+1/2, z-1/2'
'-x+1/2, y+1/2, z'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_adp_type
_atom_site_occupancy
_atom_site_symmetry_multiplicity
_atom_site_calc_flag
_atom_site_refinement_flags
Er2 Er 0.0000 0.04631(9) 0.2500 0.0082(3) Uani 1 4 d S
Er1 Er 0.0000 0.33092(6) 0.09707(5) 0.0084(2) Uani 1 2 d S
Ge1 Ge 0.0000 0.0146(16) 0.0092(16) 0.010(2) Uani 0.50 2 d SP
Ge3 Ge 0.0000 0.7754(2) 0.2500 0.0094(5) Uani 1 4 d S
Ge2 Ge 0.0000 0.62053(15) 0.10863(11) 0.0103(4) Uani 1 2 d S
loop_
_atom_type_symbol
_atom_type_description
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
Ge Ge 0.1547 1.8001 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
Er Er -0.2586 4.9576 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
_geom_angle_site_symmetry_1
_geom_angle_site_symmetry_3
Ge3 Er2 Ge2 105.47(4) 1_545 5_445
Ge3 Er2 Ge2 105.47(4) 1_545 5_545
Ge2 Er2 Ge2 86.21(5) 5_445 5_545
Ge3 Er2 Ge2 105.47(4) 1_545 14_546
Ge2 Er2 Ge2 149.06(7) 5_445 14_546
Ge2 Er2 Ge2 85.63(6) 5_545 14_546
Ge3 Er2 Ge2 105.47(4) 1_545 14_446
Ge2 Er2 Ge2 85.63(5) 5_445 14_446
Ge2 Er2 Ge2 149.06(7) 5_545 14_446
Ge2 Er2 Ge2 86.21(5) 14_546 14_446
Ge3 Er2 Ge3 140.31(3) 1_545 5_545
Ge2 Er2 Ge3 103.37(4) 5_445 5_545
Ge2 Er2 Ge3 50.08(4) 5_545 5_545
Ge2 Er2 Ge3 50.08(4) 14_546 5_545
Ge2 Er2 Ge3 103.37(4) 14_446 5_545
Ge3 Er2 Ge3 140.31(3) 1_545 5_445
Ge2 Er2 Ge3 50.08(4) 5_445 5_445
Ge2 Er2 Ge3 103.37(4) 5_545 5_445
Ge2 Er2 Ge3 103.37(4) 14_546 5_445
Ge2 Er2 Ge3 50.08(4) 14_446 5_445
Ge3 Er2 Ge3 79.38(6) 5_545 5_445
Ge3 Er2 Ge1 84.4(3) 1_545 .
Ge2 Er2 Ge1 49.44(14) 5_445 .
Ge2 Er2 Ge1 49.44(14) 5_545 .
Ge2 Er2 Ge1 134.63(9) 14_546 .
Ge2 Er2 Ge1 134.63(9) 14_446 .
Ge3 Er2 Ge1 94.3(2) 5_545 .
Ge3 Er2 Ge1 94.3(2) 5_445 .
Ge3 Er2 Ge1 84.4(3) 1_545 10_556
Ge2 Er2 Ge1 134.63(9) 5_445 10_556
Ge2 Er2 Ge1 134.63(9) 5_545 10_556
Ge2 Er2 Ge1 49.44(14) 14_546 10_556
Ge2 Er2 Ge1 49.44(14) 14_446 10_556
Ge3 Er2 Ge1 94.3(2) 5_545 10_556
Ge3 Er2 Ge1 94.3(2) 5_445 10_556
Ge1 Er2 Ge1 168.8(6) . 10_556
Ge3 Er2 Er1 144.292(19) 1_545 10_556
Ge2 Er2 Er1 100.37(4) 5_445 10_556
Ge2 Er2 Er1 100.37(4) 5_545 10_556
Ge2 Er2 Er1 52.18(3) 14_546 10_556
Ge2 Er2 Er1 52.18(3) 14_446 10_556
Ge3 Er2 Er1 51.33(3) 5_545 10_556
Ge3 Er2 Er1 51.33(3) 5_445 10_556
Ge1 Er2 Er1 131.3(3) . 10_556
Ge1 Er2 Er1 59.9(3) 10_556 10_556
Ge3 Er2 Er1 144.292(19) 1_545 .
Ge2 Er2 Er1 52.18(3) 5_445 .
Ge2 Er2 Er1 52.18(3) 5_545 .
Ge2 Er2 Er1 100.38(4) 14_546 .
Ge2 Er2 Er1 100.38(4) 14_446 .
Ge3 Er2 Er1 51.33(3) 5_545 .
Ge3 Er2 Er1 51.33(3) 5_445 .
Ge1 Er2 Er1 59.9(3) . .
Ge1 Er2 Er1 131.3(3) 10_556 .
Er1 Er2 Er1 71.42(4) 10_556 .
Ge3 Er2 Er1 52.363(19) 1_545 14_546
Ge2 Er2 Er1 157.74(4) 5_445 14_546
Ge2 Er2 Er1 100.87(3) 5_545 14_546
Ge2 Er2 Er1 53.15(4) 14_546 14_546
Ge2 Er2 Er1 97.88(4) 14_446 14_546
Ge3 Er2 Er1 97.21(3) 5_545 14_546
Ge3 Er2 Er1 144.510(17) 5_445 14_546
Ge1 Er2 Er1 121.2(2) . 14_546
Ge1 Er2 Er1 50.4(2) 10_556 14_546
Er1 Er2 Er1 99.05(3) 10_556 14_546
Er1 Er2 Er1 146.552(17) . 14_546
Ge2 Er1 Ge1 53.9(3) 9_565 13
Ge2 Er1 Ge1 53.9(3) 9_565 13_455
Ge1 Er1 Ge1 84.3(7) 13 13_455
Ge2 Er1 Ge2 100.50(4) 9_565 5_445
Ge1 Er1 Ge2 151.7(3) 13 5_445
Ge1 Er1 Ge2 89.0(3) 13_455 5_445
Ge2 Er1 Ge2 100.50(4) 9_565 5_545
Ge1 Er1 Ge2 89.0(3) 13 5_545
Ge1 Er1 Ge2 151.7(3) 13_455 5_545
Ge2 Er1 Ge2 84.06(5) 5_445 5_545
Ge2 Er1 Ge3 137.847(17) 9_565 5_545
Ge1 Er1 Ge3 91.1(3) 13 5_545
Ge1 Er1 Ge3 156.2(2) 13_455 5_545
Ge2 Er1 Ge3 105.28(5) 5_445 5_545
Ge2 Er1 Ge3 50.91(5) 5_545 5_545
Ge2 Er1 Ge3 137.847(17) 9_565 5_445
Ge1 Er1 Ge3 156.2(2) 13 5_445
Ge1 Er1 Ge3 91.1(3) 13_455 5_445
Ge2 Er1 Ge3 50.91(5) 5_445 5_445
Ge2 Er1 Ge3 105.28(5) 5_545 5_445
Ge3 Er1 Ge3 83.79(4) 5_545 5_445
Ge2 Er1 Ge1 59.3(3) 9_565 5
Ge1 Er1 Ge1 7.6(4) 13 5
Ge1 Er1 Ge1 83.75(4) 13_455 5
Ge2 Er1 Ge1 158.8(3) 5_445 5
Ge2 Er1 Ge1 93.0(2) 5_545 5
Ge3 Er1 Ge1 88.7(4) 5_545 5
Ge3 Er1 Ge1 148.7(2) 5_445 5
Ge2 Er1 Ge1 59.3(3) 9_565 5_455
Ge1 Er1 Ge1 83.75(4) 13 5_455
Ge1 Er1 Ge1 7.6(4) 13_455 5_455
Ge2 Er1 Ge1 93.0(2) 5_445 5_455
Ge2 Er1 Ge1 158.8(3) 5_545 5_455
Ge3 Er1 Ge1 148.7(2) 5_545 5_455
Ge3 Er1 Ge1 88.7(4) 5_445 5_455
Ge1 Er1 Ge1 82.2(6) 5 5_455
Ge2 Er1 Ge2 83.05(5) 9_565 .
Ge1 Er1 Ge2 58.8(2) 13 .
Ge1 Er1 Ge2 58.8(2) 13_455 .
Ge2 Er1 Ge2 137.46(3) 5_445 .
Ge2 Er1 Ge2 137.46(3) 5_545 .
Ge3 Er1 Ge2 99.00(5) 5_545 .
Ge3 Er1 Ge2 99.00(5) 5_445 .
Ge1 Er1 Ge2 52.25(18) 5 .
Ge1 Er1 Ge2 52.25(18) 5_455 .
Ge2 Er1 Er2 135.71(4) 9_565 .
Ge1 Er1 Er2 137.4(3) 13 .
Ge1 Er1 Er2 137.4(3) 13_455 .
Ge2 Er1 Er2 50.71(3) 5_445 .
Ge2 Er1 Er2 50.71(3) 5_545 .
Ge3 Er1 Er2 54.72(4) 5_545 .
Ge3 Er1 Er2 54.72(4) 5_445 .
Ge1 Er1 Er2 138.8(3) 5 .
Ge1 Er1 Er2 138.8(3) 5_455 .
Ge2 Er1 Er2 141.24(4) . .
Ge2 Er1 Er2 117.72(3) 9_565 5
Ge1 Er1 Er2 66.2(3) 13 5
Ge1 Er1 Er2 108.7(2) 13_455 5
Ge2 Er1 Er2 141.42(4) 5_445 5
Ge2 Er1 Er2 93.43(4) 5_545 5
Ge3 Er1 Er2 48.88(5) 5_545 5
Ge3 Er1 Er2 93.57(4) 5_445 5
Ge1 Er1 Er2 59.6(3) 5 5
Ge1 Er1 Er2 101.67(18) 5_455 5
Ge2 Er1 Er2 50.16(3) . 5
Er2 Er1 Er2 99.05(3) . 5
Ge2 Ge1 Ge2 96.4(4) 5_545 5_445
Ge2 Ge1 Er1 62.3(2) 5_545 13
Ge2 Ge1 Er1 122.4(6) 5_445 13
Ge2 Ge1 Er1 122.4(6) 5_545 13_455
Ge2 Ge1 Er1 62.3(2) 5_445 13_455
Er1 Ge1 Er1 84.3(7) 13 13_455
Ge2 Ge1 Er1 122.8(9) 5_545 5_445
Ge2 Ge1 Er1 64.0(3) 5_445 5_445
Er1 Ge1 Er1 172.4(4) 13 5_445
Er1 Ge1 Er1 96.25(4) 13_455 5_445
Ge2 Ge1 Er1 64.0(3) 5_545 5_545
Ge2 Ge1 Er1 122.8(9) 5_445 5_545
Er1 Ge1 Er1 96.25(4) 13 5_545
Er1 Ge1 Er1 172.4(4) 13_455 5_545
Er1 Ge1 Er1 82.2(6) 5_445 5_545
Ge2 Ge1 Er2 56.0(3) 5_545 .
Ge2 Ge1 Er2 56.0(3) 5_445 .
Er1 Ge1 Er2 116.5(3) 13 .
Er1 Ge1 Er2 116.5(3) 13_455 .
Er1 Ge1 Er2 70.0(5) 5_445 .
Er1 Ge1 Er2 70.0(5) 5_545 .
Ge2 Ge3 Ge2 101.37(11) . 10_556
Ge2 Ge3 Er2 129.32(5) . 1_565
Ge2 Ge3 Er2 129.31(5) 10_556 1_565
Ge2 Ge3 Er1 132.79(5) . 14_556
Ge2 Ge3 Er1 64.39(3) 10_556 14_556
Er2 Ge3 Er1 78.76(4) 1_565 14_556
Ge2 Ge3 Er1 132.79(5) . 14_456
Ge2 Ge3 Er1 64.39(3) 10_556 14_456
Er2 Ge3 Er1 78.76(4) 1_565 14_456
Er1 Ge3 Er1 83.79(4) 14_556 14_456
Ge2 Ge3 Er1 64.39(3) . 5_455
Ge2 Ge3 Er1 132.79(5) 10_556 5_455
Er2 Ge3 Er1 78.76(4) 1_565 5_455
Er1 Ge3 Er1 157.52(9) 14_556 5_455
Er1 Ge3 Er1 91.85(4) 14_456 5_455
Ge2 Ge3 Er1 64.39(3) . 5
Ge2 Ge3 Er1 132.79(5) 10_556 5
Er2 Ge3 Er1 78.76(4) 1_565 5
Er1 Ge3 Er1 91.85(4) 14_556 5
Er1 Ge3 Er1 157.52(9) 14_456 5
Er1 Ge3 Er1 83.79(4) 5_455 5
Ge2 Ge3 Er2 60.82(5) . 5_455
Ge2 Ge3 Er2 60.82(5) 10_556 5_455
Er2 Ge3 Er2 140.31(3) 1_565 5_455
Er1 Ge3 Er2 125.20(5) 14_556 5_455
Er1 Ge3 Er2 73.95(3) 14_456 5_455
Er1 Ge3 Er2 73.95(3) 5_455 5_455
Er1 Ge3 Er2 125.20(5) 5 5_455
Ge2 Ge3 Er2 60.82(5) . 5
Ge2 Ge3 Er2 60.82(5) 10_556 5
Er2 Ge3 Er2 140.31(3) 1_565 5
Er1 Ge3 Er2 73.95(3) 14_556 5
Er1 Ge3 Er2 125.20(5) 14_456 5
Er1 Ge3 Er2 125.20(5) 5_455 5
Er1 Ge3 Er2 73.95(3) 5 5
Er2 Ge3 Er2 79.39(6) 5_455 5
Ge3 Ge2 Ge1 131.79(19) . 5_455
Ge3 Ge2 Ge1 131.79(19) . 5
Ge1 Ge2 Ge1 96.4(4) 5_455 5
Ge3 Ge2 Er2 69.09(5) . 5
Ge1 Ge2 Er2 138.8(5) 5_455 5
Ge1 Ge2 Er2 74.6(4) 5 5
Ge3 Ge2 Er2 69.09(5) . 5_455
Ge1 Ge2 Er2 74.6(4) 5_455 5_455
Ge1 Ge2 Er2 138.8(5) 5 5_455
Er2 Ge2 Er2 86.21(5) 5 5_455
Ge3 Ge2 Er1 130.68(7) . 9_565
Ge1 Ge2 Er1 63.8(5) 5_455 9_565
Ge1 Ge2 Er1 63.8(5) 5 9_565
Er2 Ge2 Er1 135.70(3) 5 9_565
Er2 Ge2 Er1 135.70(3) 5_455 9_565
Ge3 Ge2 Er1 64.71(5) . 5
Ge1 Ge2 Er1 141.1(5) 5_455 5
Ge1 Ge2 Er1 77.3(3) 5 5
Er2 Ge2 Er1 77.12(3) 5 5
Er2 Ge2 Er1 133.80(6) 5_455 5
Er1 Ge2 Er1 79.50(4) 9_565 5
Ge3 Ge2 Er1 64.71(5) . 5_455
Ge1 Ge2 Er1 77.3(3) 5_455 5_455
Ge1 Ge2 Er1 141.1(5) 5 5_455
Er2 Ge2 Er1 133.80(6) 5 5_455
Er2 Ge2 Er1 77.12(3) 5_455 5_455
Er1 Ge2 Er1 79.50(4) 9_565 5_455
Er1 Ge2 Er1 84.06(5) 5 5_455
Ge3 Ge2 Er1 132.37(7) . .
Ge1 Ge2 Er1 63.7(4) 5_455 .
Ge1 Ge2 Er1 63.7(4) 5 .
Er2 Ge2 Er1 76.70(4) 5 .
Er2 Ge2 Er1 76.70(4) 5_455 .
Er1 Ge2 Er1 96.95(5) 9_565 .
Er1 Ge2 Er1 137.46(3) 5 .
Er1 Ge2 Er1 137.46(3) 5_455 .
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
_geom_bond_site_symmetry_2
Er2 Ge3 2.850(3) 1_545
Er2 Ge2 2.9276(13) 5_445
Er2 Ge2 2.9276(13) 5_545
Er2 Ge2 2.9276(13) 14_546
Er2 Ge2 2.9276(13) 14_446
Er2 Ge3 3.132(2) 5_545
Er2 Ge3 3.132(2) 5_445
Er2 Ge1 3.40(2) .
Er2 Ge1 3.41(2) 10_556
Er2 Er1 3.6876(14) 10_556
Er2 Er1 3.6876(14) .
Er2 Er1 3.7107(11) 14_546
Er1 Ge2 2.940(2) 9_565
Er1 Ge1 2.980(19) 13
Er1 Ge1 2.980(19) 13_455
Er1 Ge2 2.9880(15) 5_445
Er1 Ge2 2.9880(15) 5_545
Er1 Ge3 2.9960(10) 5_545
Er1 Ge3 2.9960(10) 5_445
Er1 Ge1 3.044(18) 5
Er1 Ge1 3.044(18) 5_455
Er1 Ge2 3.051(2) .
Er1 Er2 3.7107(11) 5
Ge1 Ge2 2.684(8) 5_545
Ge1 Ge2 2.684(8) 5_445
Ge1 Er1 2.980(19) 13
Ge1 Er1 2.980(19) 13_455
Ge1 Er1 3.044(18) 5_445
Ge1 Er1 3.044(18) 5_545
Ge3 Ge2 2.572(2) .
Ge3 Ge2 2.572(2) 10_556
Ge3 Er2 2.850(3) 1_565
Ge3 Er1 2.9959(10) 14_556
Ge3 Er1 2.9959(10) 14_456
Ge3 Er1 2.9960(10) 5_455
Ge3 Er1 2.9960(10) 5
Ge3 Er2 3.132(2) 5_455
Ge3 Er2 3.132(2) 5
Ge2 Ge1 2.684(8) 5_455
Ge2 Ge1 2.684(8) 5
Ge2 Er2 2.9276(13) 5
Ge2 Er2 2.9276(13) 5_455
Ge2 Er1 2.940(2) 9_565
Ge2 Er1 2.9880(15) 5
Ge2 Er1 2.9880(15) 5_455
