Cubic and doubly-fused cubic samarium clusters from Sm(ii)-mediated reduction of organic azides and azobenzenes.
Pan, Cheng-Ling; Chen, Wan; Su, Shengqun; Pan, Yu-Song; Wang, Jing; Dalton transactions (Cambridge, England : 2003) 40 (2011) 7941–7945; doi:10.1039/c1dt10395d

data_7016186
_publ_section_title
;
 Cubic and doubly-fused cubic samarium clusters from Sm(ii)-mediated
 reduction of organic azides and azobenzenes.
;
_journal_issue                   31
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              7941
_journal_page_last               7945
_journal_paper_doi               10.1039/c1dt10395d
_journal_volume                  40
_journal_year                    2011
_chemical_formula_moiety         'C92 H136 N12 Si6 Sm4'
_chemical_formula_sum            'C23 H34 N3 Si1.5 Sm'
_chemical_formula_weight         545.02
_chemical_melting_point          ?
_chemical_name_systematic
;
?
;
_space_group_IT_number           88
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  '-I 4ad'
_symmetry_space_group_name_H-M   'I 41/a :2'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            16
_cell_length_a                   22.1973(5)
_cell_length_b                   22.1973(5)
_cell_length_c                   20.2578(10)
_cell_measurement_temperature    173(2)
_cell_volume                     9981.4(6)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT software (Bruker, 1999)'
_computing_molecular_graphics    'SHELXTL-PLUS (Sheldrick, 1990)'
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      273(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker SMART APEX CCD'
_diffrn_measurement_method       '\w scan'
_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  0.0811
_diffrn_reflns_av_sigmaI/netI    0.0580
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       27
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            27593
_diffrn_reflns_theta_full        26.06
_diffrn_reflns_theta_max         26.06
_diffrn_reflns_theta_min         1.36
_diffrn_standards_decay_%        none
_diffrn_standards_interval_count none
_diffrn_standards_interval_time  none
_diffrn_standards_number         none
_exptl_absorpt_coefficient_mu    2.438
_exptl_absorpt_correction_T_max  0.7926
_exptl_absorpt_correction_T_min  0.4422
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.451
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             4416
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         1.072
_refine_diff_density_min         -0.802
_refine_diff_density_rms         0.216
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.061
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     258
_refine_ls_number_reflns         4930
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.061
_refine_ls_R_factor_all          0.0659
_refine_ls_R_factor_gt           0.0366
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0526P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0838
_refine_ls_wR_factor_ref         0.1058
_reflns_number_gt                3570
_reflns_number_total             4930
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c1dt10395d.txt
_cod_data_source_block           1
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value 'not measured' was changed to '?' -
the value is undefined or not given.

'_symmetry_cell_setting' value
'Tetragonal' changed to 'tetragonal' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from
2010-06-29.

'_refine_ls_hydrogen_treatment' value 'Constr' changed
to 'constr' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'none' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      I4(1)/a
_cod_original_formula_sum        'C23 H34 N3 Si1.50 Sm'
_cod_database_code               7016186