Heterovalent Clusters: Ln4Se(SePh)8 (Ln4= Sm4, Yb4, Sm2Yb2, Nd2Yb2)
Deborah Freedman; Safak Sayan; Thomas J. Emge; Mark Croft; John G. Brennan; Journal of the American Chemical Society 121 (1999) 11713–11719; doi:10.1021/ja991437d

data_4116640
_publ_contact_author_address
;
 Department of Chemistry
 Rutgers, The State University of New Jersey
 610 Taylor Road
 Piscataway, New Jersey  08854-8087  U.S.A.
;
_publ_contact_author_fax         (732)-445-5312
_publ_contact_author_name        'J. G. Brennan'
_publ_section_title
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 Heterovalent Clusters: Ln4Se(SePh)8 (Ln4= Sm4, Yb4, Sm2Yb2, Nd2Yb2)
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_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              11713
_journal_page_last               11719
_journal_paper_doi               10.1021/ja991437d
_journal_volume                  121
_journal_year                    1999
_chemical_formula_sum            'C37 H52.5 Nd O6.5 Se4.5 Yb'
_chemical_formula_weight         1273.89
_space_group_IT_number           75
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'P 4'
_symmetry_space_group_name_H-M   'P 4'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.000(10)
_cell_angle_beta                 90.000(10)
_cell_angle_gamma                90.000(10)
_cell_formula_units_Z            4
_cell_length_a                   18.831(2)
_cell_length_b                   18.831(2)
_cell_length_c                   13.075(2)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    153(5)
_cell_measurement_theta_max      17.0
_cell_measurement_theta_min      14.6
_cell_volume                     4636.5(10)
_computing_cell_refinement       CAD4
_computing_data_collection       CAD4
_computing_data_reduction        local
_computing_molecular_graphics    'XPMA/ZORTEP (Zsolnai, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      153(5)
_diffrn_measured_fraction_theta_full 0.977
_diffrn_measured_fraction_theta_max 0.977
_diffrn_measurement_device_type  'Enraf Nonius CAD4'
_diffrn_measurement_method       omega-scan
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0969
_diffrn_reflns_av_sigmaI/netI    0.1256
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            5818
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         2.18
_diffrn_standards_decay_%        1
_diffrn_standards_interval_time  3600
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    6.683
_exptl_absorpt_correction_T_max  0.6169
_exptl_absorpt_correction_T_min  0.1417
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   SHELX-76
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.825
_exptl_crystal_description       rod
_exptl_crystal_F_000             2438
_exptl_crystal_size_max          0.48
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.08
_refine_diff_density_max         2.151
_refine_diff_density_min         -2.402
_refine_diff_density_rms         0.301
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.19(4)
_refine_ls_extinction_coef       0.00017(14)
_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   1.265
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     466
_refine_ls_number_reflns         4409
_refine_ls_number_restraints     840
_refine_ls_restrained_S_all      1.175
_refine_ls_R_factor_all          0.1763
_refine_ls_R_factor_gt           0.0811
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2079
_refine_ls_wR_factor_ref         0.2332
_reflns_number_gt                2360
_reflns_number_total             4409
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja991437d_1.cif
_cod_data_source_block           yb2n
_cod_depositor_comments
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The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
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_cod_original_formula_sum        'C37 H52.50 Nd O6.50 Se4.50 Yb'
_cod_database_code               4116640