Na6ZnSn2, Na4.24K1.76(1)ZnSn2, and Na20Zn8Sn11: Three Intermetallic Structures Containing the Linear {Sn-Zn-Sn}(6-) Unit
Kim, Sung-Jin; Kraus, Florian; Faessler, Thomas F.; JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 131 (2009) 1469–1478; doi:10.1021/ja806737k

data_4101592
_publ_contact_author             'Thomas F. Faessler'
_publ_section_title
;
 Na6ZnSn2, Na4.24K1.76(1)ZnSn2, and Na20Zn8Sn11: Three Intermetallic
 Structures Containing the Linear {Sn-Zn-Sn}(6-) Unit
;
_journal_issue                   4
_journal_name_full               'JOURNAL OF THE AMERICAN CHEMICAL SOCIETY'
_journal_page_first              1469
_journal_page_last               1478
_journal_paper_doi               10.1021/ja806737k
_journal_volume                  131
_journal_year                    2009
_chemical_formula_sum            'K1.76 Na4.24 Sn2 Zn'
_chemical_formula_weight         469.12
_chemical_melting_point          ?
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 119.334(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.5716(5)
_cell_length_b                   9.8617(2)
_cell_length_c                   11.3820(4)
_cell_measurement_reflns_used    6764
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.7498
_cell_measurement_theta_min      2.8787
_cell_volume                     1132.32(7)
_computing_cell_refinement
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.29.9 (release 23-03-2006 CrysAlis171 .NET)
(compiled Mar 23 2006,23:39:28)
;
_computing_data_collection
;
CrysAlis CCD, Oxford Diffraction Ltd.,
Version 1.171.29.9 (release 23-03-2006 CrysAlis171 .NET)
(compiled Mar 23 2006,23:39:28)
;
_computing_data_reduction
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.29.9 (release 23-03-2006 CrysAlis171 .NET)
(compiled Mar 23 2006,23:39:28)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector                 ' CCD plate '
_diffrn_detector_area_resol_mean 16.0238
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device       ' \k-geometry diffractometer '
_diffrn_measurement_device_type  ' Oxford-Diffraction Xcalibur3 '
_diffrn_measurement_method       ' phi- and omega-rotation '
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray Source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0406
_diffrn_reflns_av_sigmaI/netI    0.0346
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            15918
_diffrn_reflns_theta_full        27.85
_diffrn_reflns_theta_max         27.85
_diffrn_reflns_theta_min         2.89
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    7.215
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.54192
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
 CrysAlis RED, Oxford Diffraction Ltd.,
 Version 1.171.29.9 (release 23-03-2006 CrysAlis171 .NET)
 (compiled Mar 23 2006,23:39:28)
 Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            'dark metallic'
_exptl_crystal_density_diffrn    2.752
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       fragment
_exptl_crystal_F_000             840
_exptl_crystal_size_max          0.05
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.867
_refine_diff_density_min         -0.974
_refine_diff_density_rms         0.160
_refine_ls_extinction_coef       0.00017(16)
_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   0.986
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     84
_refine_ls_number_reflns         2671
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.986
_refine_ls_R_factor_all          0.0452
_refine_ls_R_factor_gt           0.0288
_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^)+(0.0374P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0615
_refine_ls_wR_factor_ref         0.0668
_reflns_number_gt                1961
_reflns_number_total             2671
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            reformated.cif
_cod_data_source_block           Na4.24K1.76ZnSn2
_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.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
;
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               4101592