Formation of Corrugated n = 1 2D Tin Iodide Perovskites and Their Use as Lead-Free Solar Absorbers
Febriansyah, Benny; Lekina, Yulia; Kaur, Jagjit; Hooper, Thomas J. N.; Harikesh, Padinhare Cholakkal; Salim, Teddy; Lim, Ming Hui; Koh, Teck Ming; Chakraborty, Sudip; Shen, Ze Xiang; Mathews, Nripan; England, Jason; ACS Nano  (2021) –; doi:10.1021/acsnano.0c08204

data_4518607
_publ_section_title
;
 Formation of Corrugated n = 1 2D Tin Iodide Perovskites and Their Use as
 Lead-Free Solar Absorbers
;
_journal_name_full               'ACS Nano'
_journal_paper_doi               10.1021/acsnano.0c08204
_journal_year                    2021
_chemical_formula_sum            'C10 H21 I8 N6 Sn2'
_chemical_formula_weight         1477.91
_space_group_crystal_system      orthorhombic
_space_group_IT_number           29
_space_group_name_Hall           'P 2c -2ac'
_space_group_name_H-M_alt        'P c a 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   18.8316(8)
_cell_length_b                   13.0705(9)
_cell_length_c                   12.4137(7)
_cell_measurement_reflns_used    1663
_cell_measurement_temperature    100.(2)
_cell_measurement_theta_max      22.3871
_cell_measurement_theta_min      2.6661
_cell_volume                     3055.5(3)
_computing_cell_refinement       'SAINT V8.38A (Bruker AXS Inc., 2017)'
_computing_data_collection       'Bruker Instrument Service v2012.12.0.3'
_computing_data_reduction        'SAINT V8.38A (Bruker AXS Inc., 2017)'
_computing_molecular_graphics    'XP (Bruker AXS Inc., 2016)'
_computing_publication_material  'APEX3 (Bruker AXS Inc., 2016)'
_computing_structure_refinement  'SHELXL-2017/1 (Sheldrick, 2017)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100.(2)
_diffrn_detector_area_resol_mean 8.3333
_diffrn_measured_fraction_theta_full 0.976
_diffrn_measured_fraction_theta_max 0.976
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0758
_diffrn_reflns_av_unetI/netI     0.1269
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            20006
_diffrn_reflns_theta_full        32.07
_diffrn_reflns_theta_max         32.07
_diffrn_reflns_theta_min         1.56
_diffrn_source                   'fine-focus sealed tube'
_diffrn_source_type              'Bruker X8 Apex'
_exptl_absorpt_coefficient_mu    9.728
_exptl_absorpt_correction_T_max  0.16
_exptl_absorpt_correction_T_min  0.06
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 - Bruker AXS area detector scaling and absorption correction
;
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    3.213
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             2588
_exptl_crystal_size_max          0.400
_exptl_crystal_size_mid          0.320
_exptl_crystal_size_min          0.300
_refine_diff_density_max         2.013
_refine_diff_density_min         -2.090
_refine_ls_abs_structure_details
;

Refined as an inversion twin.
;
_refine_ls_abs_structure_Flack   0.39(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.982
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     238
_refine_ls_number_reflns         9070
_refine_ls_number_restraints     199
_refine_ls_restrained_S_all      0.972
_refine_ls_R_factor_all          0.0996
_refine_ls_R_factor_gt           0.0579
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0146P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0848
_refine_ls_wR_factor_ref         0.1009
_reflns_number_gt                6238
_reflns_number_total             9070
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            nn0c08204_si_003.cif
_cod_data_source_block           2-ImEA[SnI4]
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_absorpt_correction_type' value 'Multi-Scan' was
changed to 'multi-scan' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/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 7556 2019-12-06 15:28:31Z antanas 
;
_cod_database_code               4518607
_shelx_res_checksum              77343
_shelx_hkl_checksum              12671