Mixed Si/Ge Nine-Atom Zintl Clusters: ESI Mass Spectrometric Investigations and Single-Crystal Structure Determination of Paramagnetic [Si9-xGex]3-
Markus Waibel; Thomas F. Fässler; Inorganic Chemistry 52 (2013) 5861–5866; doi:10.1021/ic302802h

data_4334843
_publ_contact_author_address
;Department Chemie, 
Technische Universitaet Muenchen,
D-85747 Garching
Germany
;
_publ_contact_author_email       thomas.faessler@lrz.tum.de
_publ_contact_author_fax         '(+49) 89-289-13186'
_publ_contact_author_name        'Thomas F. Faessler'
_publ_contact_author_phone       '(+49) 89-289-13131'
_publ_section_title
;
 Mixed Si/Ge Nine-Atom Zintl Clusters: ESI Mass Spectrometric
 Investigations and Single-Crystal Structure Determination of Paramagnetic
 [Si9-xGex]3-
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              5861
_journal_page_last               5866
_journal_paper_doi               10.1021/ic302802h
_journal_volume                  52
_journal_year                    2013
_chemical_formula_sum            'C54 H133.37 Ge4.43 K3 N14.45 O18 Si4.57'
_chemical_formula_weight         1840.96
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                80.150(2)
_cell_angle_beta                 84.792(2)
_cell_angle_gamma                66.546(3)
_cell_formula_units_Z            2
_cell_length_a                   14.1056(5)
_cell_length_b                   15.1430(4)
_cell_length_c                   22.8797(6)
_cell_measurement_temperature    293(2)
_cell_volume                     4415.9(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.985
_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  0.0948
_diffrn_reflns_av_sigmaI/netI    0.1464
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            41512
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.91
_exptl_absorpt_coefficient_mu    1.760
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.68817
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.33.34d (release 27-02-2009 CrysAlis171 .NET)
(compiled Feb 27 2009,15:38:38)
empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.385
_exptl_crystal_description       block
_exptl_crystal_F_000             1931
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.706
_refine_diff_density_min         -0.754
_refine_diff_density_rms         0.102
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.975
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     914
_refine_ls_number_reflns         15300
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.975
_refine_ls_R_factor_all          0.1420
_refine_ls_R_factor_gt           0.0732
_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^)+(0.0602P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1227
_refine_ls_wR_factor_ref         0.1402
_reflns_number_gt                8849
_reflns_number_total             15300
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic302802h_si_001_4.cif
_cod_data_source_block           compound4
_cod_database_code               4334843