 
data_c:\crystal\x-red32\y2mo4o 
 
_audit_creation_method            SHELXL-97 
_chemical_name_systematic 
; 
 ? 
; 
_chemical_name_common             ? 
_chemical_melting_point           ? 
_chemical_formula_moiety          ? 
_chemical_formula_sum             'Mo4 O15 Y2' 
_chemical_formula_weight          801.58 
 
loop_ 
 _atom_type_symbol 
 _atom_type_description 
 _atom_type_scat_dispersion_real 
 _atom_type_scat_dispersion_imag 
 _atom_type_scat_source 
 'Y'  'Y'  -2.7962   3.5667 
 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' 
 'Mo'  'Mo'  -1.6832   0.6857 
 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' 
 'O'  'O'   0.0106   0.0060 
 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' 
 
_symmetry_cell_setting            monoclinic
_symmetry_space_group_name_H-M    P21/c 
 
loop_ 
 _symmetry_equiv_pos_as_xyz 
 'x, y, z' 
 '-x, y+1/2, -z+1/2' 
 '-x, -y, -z' 
 'x, -y-1/2, z-1/2' 
 
_cell_length_a                    6.8185(2) 
_cell_length_b                    9.5913(3) 
_cell_length_c                    10.5299(3) 
_cell_angle_alpha                 90.00 
_cell_angle_beta                  105.586(2) 
_cell_angle_gamma                 90.00 
_cell_volume                      663.31(3) 
_cell_formula_units_Z             2 
_cell_measurement_temperature     293(2) 
_cell_measurement_reflns_used     22178 
_cell_measurement_theta_min       0.41
_cell_measurement_theta_max       27.88
 
_exptl_crystal_description        'lath-shaped'
_exptl_crystal_colour             colourless
_exptl_crystal_size_max           0.162
_exptl_crystal_size_mid           0.087 
_exptl_crystal_size_min           0.045 
_exptl_crystal_density_meas       ? 
_exptl_crystal_density_diffrn     4.013 
_exptl_crystal_density_method     'not measured' 
_exptl_crystal_F_000              732 
_exptl_absorpt_coefficient_mu     12.389 
_exptl_absorpt_correction_type    numerical 
_exptl_absorpt_correction_T_min   0.1290
_exptl_absorpt_correction_T_max   0.5926
_exptl_absorpt_process_details    
'programs X-SHAPE and HABITUS by w. Herrendorf, Univ. Giessen, 1995'  
 
_exptl_special_details 
; 
 ? 
; 
 
_diffrn_ambient_temperature       293(2) 
_diffrn_radiation_wavelength      0.71073 
_diffrn_radiation_type            MoK\a 
_diffrn_radiation_source          'fine-focus sealed tube' 
_diffrn_radiation_monochromator   graphite 
_diffrn_measurement_device_type   'Nonius Kappa-CCD'
_diffrn_measurement_method        'four-circle, ccd-detector'
_diffrn_detector_area_resol_mean  ? 
_diffrn_standards_number          ? 
_diffrn_standards_interval_count  ? 
_diffrn_standards_interval_time   ? 
_diffrn_standards_decay_%         ? 
_diffrn_reflns_number             14380 
_diffrn_reflns_av_R_equivalents   0.0950 
_diffrn_reflns_av_sigmaI/netI     0.0344 
_diffrn_reflns_limit_h_min        -8 
_diffrn_reflns_limit_h_max        8 
_diffrn_reflns_limit_k_min        -12 
_diffrn_reflns_limit_k_max        12 
_diffrn_reflns_limit_l_min        -13 
_diffrn_reflns_limit_l_max        13 
_diffrn_reflns_theta_min          2.92 
_diffrn_reflns_theta_max          27.98 
_reflns_number_total              1590 
_reflns_number_gt                 1558 
_reflns_threshold_expression      >2sigma(I) 
 
_computing_data_collection        'Nonius Collect-Software'
_computing_cell_refinement        'Denzo (W. Minor & Z. Otwinowski)'
_computing_data_reduction         'Denzo (W. Minor & Z. Otwinowski)'
_computing_structure_solution     'SHELXS-97 (Sheldrick, 1997)' 
_computing_structure_refinement   'SHELXL-97 (Sheldrick, 1997)' 
_computing_molecular_graphics     ? 
_computing_publication_material   ? 
 
_refine_special_details 
; 
 Refinement of F² against ALL reflections.  The weighted R-factor wR and 
 goodness of fit S are based on F², conventional R-factors R are based 
 on F, with F set to zero for negative F². The threshold expression of 
 F² > 2sigma(F²) is used only for calculating R-factors(gt) etc. and is 
 not relevant to the choice of reflections for refinement.  R-factors based 
 on F² are statistically about twice as large as those based on F, and R- 
 factors based on ALL data will be even larger. 
; 
 
_refine_ls_structure_factor_coef  Fsqd  
_refine_ls_matrix_type            full 
_refine_ls_weighting_scheme       calc  
_refine_ls_weighting_details 
 'calc w=1/[σ²(Fo²)+(0.0389P)²+2.8070P] where P=(Fo²+2Fc²)/3' 
_atom_sites_solution_primary      direct 
_atom_sites_solution_secondary    difmap 
_refine_ls_extinction_method      SHELXL 
_refine_ls_extinction_coef        0.0063(6) 
_refine_ls_extinction_expression 
 'Fc^*^=kFc[1+0.001xFc²λ³/sin(2θ)]^-1/4^' 
_refine_ls_number_reflns          1590 
_refine_ls_number_parameters      98 
_refine_ls_number_restraints      0 
_refine_ls_R_factor_all           0.0277 
_refine_ls_R_factor_gt            0.0271 
_refine_ls_wR_factor_ref          0.0710 
_refine_ls_wR_factor_gt           0.0704 
_refine_ls_goodness_of_fit_ref    1.046 
_refine_ls_restrained_S_all       1.046 
_refine_ls_shift/su_max           0.000 
_refine_ls_shift/su_mean          0.000 
 
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 
 _atom_site_disorder_assembly 
 _atom_site_disorder_group 
Y Y 0.28737(5) 0.02299(4) 0.22317(3) 0.00415(13) Uani 1 1 d . . . 
Mo1 Mo 0.58173(5) 0.24324(4) 0.01126(3) 0.00931(13) Uani 1 1 d . . . 
Mo2 Mo 0.12110(5) 0.40487(4) 0.15606(3) 0.00966(13) Uani 1 1 d . . . 
O1 O 0.4782(5) 0.1270(4) 0.1028(3) 0.0183(7) Uani 1 1 d . . . 
O2 O 0.7224(5) 0.3472(4) 0.4204(3) 0.0189(7) Uani 1 1 d . . . 
O3 O 0.3824(5) 0.1682(4) 0.3995(3) 0.0192(7) Uani 1 1 d . . . 
O4 O 0.7455(5) 0.3655(3) 0.1176(3) 0.0164(6) Uani 1 1 d . . . 
O5 O 0.3781(5) 0.4431(4) 0.1832(3) 0.0191(7) Uani 1 1 d . . . 
O6 O 0.1112(5) 0.2242(3) 0.1464(3) 0.0176(7) Uani 1 1 d . . . 
O7 O 0.0547(5) 0.4720(4) 0.2933(3) 0.0184(7) Uani 1 1 d . . . 
O8 O 0.0000 0.0000 0.5000 0.0205(10) Uani 1 2 d S . . 
 
loop_ 
 _atom_site_aniso_label 
 _atom_site_aniso_U_11 
 _atom_site_aniso_U_22 
 _atom_site_aniso_U_33 
 _atom_site_aniso_U_23 
 _atom_site_aniso_U_13 
 _atom_site_aniso_U_12 
Y 0.0055(2) 0.00313(19) 0.0041(2) 0.00041(11) 0.00169(14) 0.00028(11) 
Mo1 0.0118(2) 0.00857(19) 0.0079(2) -0.00026(11) 0.00313(14) -0.00146(11) 
Mo2 0.00886(19) 0.00913(19) 0.0103(2) 0.00050(12) 0.00139(13) 0.00075(12) 
O1 0.0205(16) 0.0158(15) 0.0220(17) 0.0068(13) 0.0117(13) 0.0006(12) 
O2 0.0223(16) 0.0183(16) 0.0183(16) 0.0098(13) 0.0092(13) 0.0047(13) 
O3 0.0187(15) 0.0205(17) 0.0157(16) -0.0041(13) -0.0002(12) -0.0021(13) 
O4 0.0154(15) 0.0162(15) 0.0174(16) -0.0068(12) 0.0039(12) -0.0003(12) 
O5 0.0100(14) 0.0243(17) 0.0226(17) -0.0062(14) 0.0035(12) -0.0029(13) 
O6 0.0161(15) 0.0130(15) 0.0227(17) 0.0026(12) 0.0034(13) 0.0036(12) 
O7 0.0117(14) 0.0249(18) 0.0181(16) -0.0078(13) 0.0033(12) -0.0002(12) 
O8 0.017(2) 0.023(2) 0.021(2) -0.0136(19) 0.0044(19) -0.0023(19) 
 
_geom_special_details 
; 
 All esds (except the esd in the dihedral angle between two l.s. planes) 
 are estimated using the full covariance matrix.  The cell esds are taken 
 into account individually in the estimation of esds in distances, angles 
 and torsion angles; correlations between esds in cell parameters are only 
 used when they are defined by crystal symmetry.  An approximate (isotropic) 
 treatment of cell esds is used for estimating esds involving l.s. planes. 
; 
 
loop_ 
 _geom_bond_atom_site_label_1 
 _geom_bond_atom_site_label_2 
 _geom_bond_distance 
 _geom_bond_site_symmetry_2 
 _geom_bond_publ_flag 
Y O2 2.253(3) 2_645 ? 
Y O3 2.271(3) . ? 
Y O1 2.276(3) . ? 
Y O6 2.302(3) . ? 
Y O4 2.312(3) 2_645 ? 
Y O7 2.343(3) 2_545 ? 
Y O5 2.357(3) 2_645 ? 
Y Mo2 3.5441(5) 2_545 ? 
Mo1 O1 1.743(3) . ? 
Mo1 O2 1.756(3) 4_565 ? 
Mo1 O3 1.759(3) 4_565 ? 
Mo1 O4 1.789(3) . ? 
Mo2 O6 1.736(3) . ? 
Mo2 O5 1.737(3) . ? 
Mo2 O7 1.749(3) . ? 
Mo2 O8 1.8670(3) 2 ? 
Mo2 O4 2.512(3) 1_455 ? 
Mo2 Y 3.5441(5) 2 ? 
O2 Mo1 1.756(3) 4_566 ? 
O2 Y 2.253(3) 2_655 ? 
O3 Mo1 1.759(3) 4_566 ? 
O4 Y 2.312(3) 2_655 ? 
O4 Mo2 2.512(3) 1_655 ? 
O5 Y 2.357(3) 2_655 ? 
O7 Y 2.343(3) 2 ? 
O8 Mo2 1.8669(3) 4_566 ? 
O8 Mo2 1.8669(3) 2_545 ? 
 
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 
 _geom_angle_publ_flag 
O2 Y O3 163.24(13) 2_645 . ? 
O2 Y O1 82.69(12) 2_645 . ? 
O3 Y O1 96.10(13) . . ? 
O2 Y O6 118.24(12) 2_645 . ? 
O3 Y O6 77.31(12) . . ? 
O1 Y O6 76.07(12) . . ? 
O2 Y O4 90.37(12) 2_645 2_645 ? 
O3 Y O4 82.52(12) . 2_645 ? 
O1 Y O4 150.63(12) . 2_645 ? 
O6 Y O4 131.26(12) . 2_645 ? 
O2 Y O7 86.83(12) 2_645 2_545 ? 
O3 Y O7 104.37(12) . 2_545 ? 
O1 Y O7 139.17(12) . 2_545 ? 
O6 Y O7 74.58(12) . 2_545 ? 
O4 Y O7 68.23(11) 2_645 2_545 ? 
O2 Y O5 83.57(13) 2_645 2_645 ? 
O3 Y O5 79.98(12) . 2_645 ? 
O1 Y O5 75.03(12) . 2_645 ? 
O6 Y O5 140.77(12) . 2_645 ? 
O4 Y O5 75.85(12) 2_645 2_645 ? 
O7 Y O5 142.68(12) 2_545 2_645 ? 
O2 Y Mo2 96.73(9) 2_645 2_545 ? 
O3 Y Mo2 88.96(9) . 2_545 ? 
O1 Y Mo2 164.11(9) . 2_545 ? 
O6 Y Mo2 90.45(9) . 2_545 ? 
O4 Y Mo2 44.96(8) 2_645 2_545 ? 
O7 Y Mo2 25.51(8) 2_545 2_545 ? 
O5 Y Mo2 120.77(8) 2_645 2_545 ? 
O1 Mo1 O2 110.32(16) . 4_565 ? 
O1 Mo1 O3 108.91(16) . 4_565 ? 
O2 Mo1 O3 108.12(16) 4_565 4_565 ? 
O1 Mo1 O4 110.51(16) . . ? 
O2 Mo1 O4 108.94(15) 4_565 . ? 
O3 Mo1 O4 110.01(16) 4_565 . ? 
O6 Mo2 O5 103.98(16) . . ? 
O6 Mo2 O7 113.65(17) . . ? 
O5 Mo2 O7 105.07(16) . . ? 
O6 Mo2 O8 115.80(11) . 2 ? 
O5 Mo2 O8 103.29(12) . 2 ? 
O7 Mo2 O8 113.33(12) . 2 ? 
O6 Mo2 O4 79.55(13) . 1_455 ? 
O5 Mo2 O4 176.47(14) . 1_455 ? 
O7 Mo2 O4 73.12(13) . 1_455 ? 
O8 Mo2 O4 74.98(8) 2 1_455 ? 
O6 Mo2 Y 108.56(11) . 2 ? 
O5 Mo2 Y 136.79(11) . 2 ? 
O7 Mo2 Y 35.22(11) . 2 ? 
O8 Mo2 Y 87.436(13) 2 2 ? 
O4 Mo2 Y 40.58(7) 1_455 2 ? 
Mo1 O1 Y 164.95(19) . . ? 
Mo1 O2 Y 144.44(18) 4_566 2_655 ? 
Mo1 O3 Y 147.40(19) 4_566 . ? 
Mo1 O4 Y 135.73(17) . 2_655 ? 
Mo1 O4 Mo2 129.59(16) . 1_655 ? 
Y O4 Mo2 94.46(11) 2_655 1_655 ? 
Mo2 O5 Y 163.3(2) . 2_655 ? 
Mo2 O6 Y 143.90(18) . . ? 
Mo2 O7 Y 119.27(16) . 2 ? 
Mo2 O8 Mo2 180.0 4_566 2_545 ? 
 
_diffrn_measured_fraction_theta_max    0.998 
_diffrn_reflns_theta_full              27.98 
_diffrn_measured_fraction_theta_full   0.998 
_refine_diff_density_max    1.424 
_refine_diff_density_min   -1.316 
_refine_diff_density_rms    0.215 
