On the structure of heptalithium distannide: Li<sub>7</sub>Sn<sub>2</sub> or Li<sub>7-<i>x</i></sub>Sn<sub>2</sub> (0.3 < <i>x</i> < 0.5).
Rahman, Salina; Ghosh, Kowsik; Ovchinnikov, Alexander; Nandakumar, Anirudh; Chan, Candace K.; Bobev, Svilen; Dalton transactions (Cambridge, England : 2003) 54 (2025) 12859–12867; doi:10.1039/d5dt01022e

data_7719184
_publ_section_title
;
 On the structure of heptalithium distannide: Li<sub>7</sub>Sn<sub>2</sub>
 or Li<sub>7-<i>x</i></sub>Sn<sub>2</sub> (0.3 &lt; <i>x</i> &lt; 0.5).
;
_journal_issue                   34
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              12859
_journal_page_last               12867
_journal_paper_doi               10.1039/d5dt01022e
_journal_volume                  54
_journal_year                    2025
_chemical_formula_sum            'Li6.5 Sn2'
_chemical_formula_weight         282.49
_space_group_IT_number           65
_space_group_name_Hall           '-C 2 2'
_space_group_name_H-M_alt        'C m m m'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_H-M   'C m m m'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2025-04-16 deposited with the CCDC.	2025-07-23 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.8105(10)
_cell_length_b                   13.8521(14)
_cell_length_c                   4.7272(5)
_cell_measurement_reflns_used    1112
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      30.47
_cell_measurement_theta_min      2.54
_cell_volume                     642.41(11)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0397
_diffrn_reflns_av_sigmaI/netI    0.0351
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       6
_diffrn_reflns_limit_l_min       -6
_diffrn_reflns_number            2757
_diffrn_reflns_theta_full        30.63
_diffrn_reflns_theta_max         30.63
_diffrn_reflns_theta_min         2.54
_exptl_absorpt_coefficient_mu    7.618
_exptl_absorpt_correction_T_max  0.5774
_exptl_absorpt_correction_T_min  0.3393
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    2.921
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       irregular
_exptl_crystal_F_000             478
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.08
_refine_diff_density_max         1.392
_refine_diff_density_min         -1.311
_refine_diff_density_rms         0.225
_refine_ls_extinction_coef       0.0033(4)
_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   1.064
_refine_ls_matrix_type           full
_refine_ls_number_parameters     21
_refine_ls_number_reflns         593
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.064
_refine_ls_R_factor_all          0.0351
_refine_ls_R_factor_gt           0.0257
_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^)+(0.0274P)^2^+0.3498P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0564
_refine_ls_wR_factor_ref         0.0591
_reflns_number_gt                493
_reflns_number_total             593
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            d5dt01022e2.cif
_cod_data_source_block           final_CCDC7
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Orthorhombic' was changed
to 'orthorhombic' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 8170 2020-07-09 18:12:32Z antanas 

 Adding full bibliography for 7719177--7719189.cif.
;
_cod_original_sg_symbol_H-M      Cmmm
_cod_original_formula_sum        'Li6.50 Sn2'
_cod_database_code               7719184