Synthesis, structure, and reactivity of zwitterionic divalent rare-Earth metal silanides.
Thalangamaarachchige, Vidura D.; Unruh, Daniel K.; Cordes, David B.; Krempner, Clemens; Inorganic chemistry 54 (2015) 4189–4191; doi:10.1021/acs.inorgchem.5b00542

data_4343242
_publ_section_title
;
 Synthesis, structure, and reactivity of zwitterionic divalent rare-Earth
 metal silanides.
;
_journal_issue                   9
_journal_name_full               'Inorganic chemistry'
_journal_page_first              4189
_journal_page_last               4191
_journal_paper_doi               10.1021/acs.inorgchem.5b00542
_journal_volume                  54
_journal_year                    2015
_chemical_formula_moiety         'C18 H54 O6 Si8 Sm'
_chemical_formula_sum            'C18 H54 O6 Si8 Sm'
_chemical_formula_weight         741.68
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           55
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2 2ab'
_symmetry_space_group_name_H-M   'P b a m'
_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            4
_cell_length_a                   16.9527(14)
_cell_length_b                   12.8816(10)
_cell_length_c                   16.9068(14)
_cell_measurement_reflns_used    9524
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.84
_cell_measurement_theta_min      2.32
_cell_volume                     3692.1(5)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker SMART APEX-II CCD'
_diffrn_measurement_method       '\w scans'
_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  0.0227
_diffrn_reflns_av_sigmaI/netI    0.0116
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            42822
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         27.88
_diffrn_reflns_theta_min         1.20
_exptl_absorpt_coefficient_mu    1.876
_exptl_absorpt_correction_T_max  0.4092
_exptl_absorpt_correction_T_min  0.3663
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker SADABS'
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    1.334
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       chunk
_exptl_crystal_F_000             1536
_exptl_crystal_size_max          0.67
_exptl_crystal_size_mid          0.60
_exptl_crystal_size_min          0.58
_refine_diff_density_max         4.044
_refine_diff_density_min         -7.718
_refine_diff_density_rms         0.159
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.240
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     207
_refine_ls_number_reflns         4541
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.240
_refine_ls_R_factor_all          0.0733
_refine_ls_R_factor_gt           0.0604
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0378P)^2^+24.4771P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1494
_refine_ls_wR_factor_ref         0.1585
_reflns_number_gt                3611
_reflns_number_total             4541
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic5b00542_si_002.cif
_cod_data_source_block           Sm-3
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/usr/data/users/saulius/crontab/automatic-downloads/current/ACS/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 3271 2015-04-21 07:52:19Z andrius 
;
_cod_database_code               4343242