Homomeric Chains of intermolecular bonds scaffold octahedral germanium perovskites
Morteza Najarian, Amin; Dinic, Filip; Chen, Hao; Sabatini, Randy; Zheng, Chao; Lough, Alan J.; Maris, Thierry; Saidaminov, Makhsud I.; Garcia de Arquer, F. Pelayo; Voznyy, Oleksandr; Hoogland, Sjoerd; Sargent, Edward H.; Nature 620 (2023) 328–335; doi:10.1038/s41586-023-06209-y

data_1570737
_publ_section_title
;
 Homomeric Chains of intermolecular bonds scaffold octahedral germanium
 perovskites
;
_journal_name_full               Nature
_journal_page_first              328
_journal_page_last               335
_journal_paper_doi               10.1038/s41586-023-06209-y
_journal_volume                  620
_journal_year                    2023
_chemical_absolute_configuration ad
_chemical_formula_moiety         'Cs Ge2 I7, 2(C7 H9 Cl N)'
_chemical_formula_sum            'C14 H18 Cl2 Cs Ge2 I7 N2'
_chemical_formula_weight         1451.59
_chemical_name_systematic
;      
catena-[bis((4-chlorophenyl)methanaminium) 
tetrakis(m-iodo)-triodo-cesium-di-germanium]
;
_space_group_crystal_system      orthorhombic
_space_group_IT_number           39
_space_group_name_Hall           'A 2 -2b'
_space_group_name_H-M_alt        'A e m 2'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2023-01-26
_audit_creation_method
;
Olex2 1.5
(compiled 2022.04.07 svn.rca3783a0 for OlexSys, GUI svn.r6498)
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.4068(3)
_cell_length_b                   45.0015(16)
_cell_length_c                   8.3314(3)
_cell_measurement_reflns_used    9923
_cell_measurement_temperature    150
_cell_measurement_theta_max      54.032
_cell_measurement_theta_min      4.577
_cell_volume                     3151.9(2)
_computing_cell_refinement
;
SAINT (2020) V8.40B; Integration Software for Single Crystal Data.
Bruker AXS Inc., Madison, WI 53719-1173.
;
_computing_data_collection
;
APEX 4 (2022) Bruker AXS Inc., Madison, WI 53719-1173.
;
_computing_data_reduction
;
SAINT (2020) V8.40B; Integration Software for Single Crystal Data.
Bruker AXS Inc., Madison, WI 53719-1173.
;
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL  (Sheldrick, 2008)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      150
_diffrn_detector                 'CMOS Area detector'
_diffrn_detector_area_resol_mean 10.42
_diffrn_detector_type            'Bruker CMOS Photon III '
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device       'k-geometry diffractometer'
_diffrn_measurement_device_type  'Bruker Venture Metaljet'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_collimation    'Focusing mirrors'
_diffrn_radiation_monochromator  'Helios MX Mirror Optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Ga K\a'
_diffrn_radiation_wavelength     1.34139
_diffrn_reflns_av_R_equivalents  0.0524
_diffrn_reflns_av_unetI/netI     0.0382
_diffrn_reflns_Laue_measured_fraction_full 0.995
_diffrn_reflns_Laue_measured_fraction_max 0.988
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       54
_diffrn_reflns_limit_k_min       -53
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            19745
_diffrn_reflns_point_group_measured_fraction_full 0.981
_diffrn_reflns_point_group_measured_fraction_max 0.970
_diffrn_reflns_theta_full        53.594
_diffrn_reflns_theta_max         54.929
_diffrn_reflns_theta_min         1.708
_diffrn_source                   'Metal Jet'
_diffrn_source_current           2.86
_diffrn_source_power             0.19937059999999998
_diffrn_source_target            Ga
_diffrn_source_type              'Gallium Liquid Metal Jet Source'
_diffrn_source_voltage           69.71
_exptl_absorpt_coefficient_mu    45.800
_exptl_absorpt_correction_T_max  0.0911
_exptl_absorpt_correction_T_min  0.0179
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.1397 before and 0.0912 after correction.
The Ratio of minimum to maximum transmission is 0.1965.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            'clear light brown'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   light
_exptl_crystal_colour_primary    brown
_exptl_crystal_density_diffrn    3.059
_exptl_crystal_description       plate
_exptl_crystal_F_000             2560
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.03
_refine_diff_density_max         1.429
_refine_diff_density_min         -1.988
_refine_diff_density_rms         0.372
_refine_ls_abs_structure_details
;
 Refined as an inversion twin.
;
_refine_ls_abs_structure_Flack   0.31(4)
_refine_ls_extinction_coef       .
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.120
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     132
_refine_ls_number_reflns         2956
_refine_ls_number_restraints     49
_refine_ls_restrained_S_all      1.112
_refine_ls_R_factor_all          0.0700
_refine_ls_R_factor_gt           0.0565
_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^)+(0.0691P)^2^+104.2646P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1494
_refine_ls_wR_factor_ref         0.1603
_reflns_Friedel_coverage         0.819
_reflns_Friedel_fraction_full    0.965
_reflns_Friedel_fraction_max     0.949
_reflns_number_gt                2520
_reflns_number_total             2956
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            13-Cs_4Cl-PMA_2Ge2I7.cif
_cod_data_source_block           sarg141
_cod_original_sg_symbol_Hall     'A 2 -2c'
_cod_original_sg_symbol_H-M      'A b m 2'
_cod_database_code               1570737