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_1570740
_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_formula_moiety         'Ge I3, 2(C2 H7 I N), I'
_chemical_formula_sum            'C4 H14 Ge I6 N2'
_chemical_formula_weight         924.19
_chemical_name_systematic
;
catena-[bis(2-iodoethan-1-aminium) 
bis(m-iodo)-bis(iodo)-germanium(ii)]
;
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_method           SHELXL-2019/1
_cell_angle_alpha                90
_cell_angle_beta                 97.632(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.1291(6)
_cell_length_b                   8.8236(6)
_cell_length_c                   25.322(2)
_cell_measurement_reflns_used    9130
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.32
_cell_measurement_theta_min      3.25
_cell_volume                     1800.2(2)
_computing_cell_refinement       APEX4
_computing_data_collection       'APEX4 (Bruker AXS, 2021)'
_computing_data_reduction        APEX4
_computing_molecular_graphics    'PLATON (Spek, 2009)'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-2019/1 (Sheldrick, 2015b)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2015a)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker Kappa APEX-DUO CMOS PHOTON II'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0607
_diffrn_reflns_av_unetI/netI     0.0430
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            42023
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.482
_diffrn_reflns_theta_min         2.447
_diffrn_source                   'sealed tube with Bruker Triupmh monochromator'
_exptl_absorpt_coefficient_mu    11.966
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.5748
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Krause et al., 2015)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    3.410
_exptl_crystal_description       plate
_exptl_crystal_F_000             1608
_exptl_crystal_size_max          0.180
_exptl_crystal_size_mid          0.150
_exptl_crystal_size_min          0.020
_refine_diff_density_max         0.788
_refine_diff_density_min         -1.216
_refine_diff_density_rms         0.208
_refine_ls_extinction_coef       .
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.039
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     120
_refine_ls_number_reflns         4127
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.039
_refine_ls_R_factor_all          0.0369
_refine_ls_R_factor_gt           0.0264
_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^)+(0.0288P)^2^+0.0508P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0622
_refine_ls_wR_factor_ref         0.0650
_reflns_Friedel_coverage         0.000
_reflns_Friedel_fraction_full    .
_reflns_Friedel_fraction_max     .
_reflns_number_gt                3438
_reflns_number_total             4127
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            16-_I-EA_2GeI4.cif
_cod_data_source_block           i-ea
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               1570740