Partial double bond character in chalcogen compounds of stanna-closo-dodecaborate
Kirchmann, Marius; Gädt, Torben; Schappacher, Falko M.; Pöttgen, Rainer; Weigend, Florian; Wesemann, Lars; Dalton Transactions  (2009) 1055–1062; doi:10.1039/b814936d

data_7030630
_publ_section_title
;
 Partial double bond character in chalcogen compounds of
 stanna-closo-dodecaborate
;
_journal_coden_ASTM              DTARAF
_journal_issue                   6
_journal_name_full               'Dalton Transactions'
_journal_page_first              1055
_journal_page_last               1062
_journal_paper_doi               10.1039/b814936d
_journal_year                    2009
_chemical_formula_moiety         'B44 H44 O4 Sn4, 7(O), O, O, 8(K)'
_chemical_formula_sum            'B44 H44 K8 O13 Sn4'
_chemical_formula_weight         1515.55
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_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                 112.671(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   21.7140(14)
_cell_length_b                   18.7849(8)
_cell_length_c                   14.4493(9)
_cell_measurement_temperature    173(2)
_cell_volume                     5438.4(6)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'Stoe IDPS 2T'
_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  0.0595
_diffrn_reflns_av_sigmaI/netI    0.0267
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            34054
_diffrn_reflns_theta_full        25.35
_diffrn_reflns_theta_max         25.35
_diffrn_reflns_theta_min         5.68
_exptl_absorpt_coefficient_mu    2.470
_exptl_absorpt_correction_T_max  0.7809
_exptl_absorpt_correction_T_min  0.6523
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'Stoe X-Red, X-Shape'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.851
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       bloc
_exptl_crystal_F_000             2880
_exptl_crystal_size_max          0.08
_exptl_crystal_size_mid          0.065
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.636
_refine_diff_density_min         -0.802
_refine_diff_density_rms         0.119
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.308
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     323
_refine_ls_number_reflns         4930
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.308
_refine_ls_R_factor_all          0.0500
_refine_ls_R_factor_gt           0.0396
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0099P)^2^+34.6629P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0600
_refine_ls_wR_factor_ref         0.0619
_reflns_number_gt                4315
_reflns_number_total             4930
_reflns_threshold_expression     >2sigma(I)
_cod_duplicate_entry             7000442
_cod_data_source_file            b814936d.txt
_cod_data_source_block           compound2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'Numerical' changed to
'numerical' according to
/usr/data/users/saulius/automatic-downloads/retrospective/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_cell_volume        5438.4(5)
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               7030630