# Supplementary Information (SI) for Journal of Materials Chemistry A.
# This journal is © The Royal Society of Chemistry 2026

####################################################################### 
# 
# This file contains crystal structure data downloaded from the 
# Cambridge Structural Database (CSD) hosted by the Cambridge 
# Crystallographic Data Centre (CCDC).
# 
# Full information about CCDC data access policies and citation 
# guidelines are available at http://www.ccdc.cam.ac.uk/access/V1 
# 
# Audit and citation data items may have been added by the CCDC. 
# Please retain this information to preserve the provenance of 
# this file and to allow appropriate attribution of the data. 
# 
#######################################################################

data_I
_database_code_depnum_ccdc_archive 'CCDC 2487068'
loop_
_audit_author_name
_audit_author_address
'Vadim Kovrugin'
;ENSICAEN
France
;
_audit_update_record             
;
2025-09-10 deposited with the CCDC.	2026-02-10 downloaded from the CCDC.
;
#=======================================================================

# 5. CHEMICAL DATA

_chemical_name_systematic        
; ?
;
_chemical_name_common            ?
_chemical_formula_moiety         'Mn2 O8, 6(K)'
_chemical_formula_structural     ?
_chemical_formula_analytical     ?
_chemical_formula_iupac          ?
_chemical_formula_sum            'K6 Mn2 O8'
_chemical_formula_weight         472.5
_chemical_melting_point          ?
_chemical_compound_source        ?
_chemical_absolute_configuration .

#=======================================================================

# 6. POWDER SPECIMEN AND CRYSTAL DATA

_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_H-M   'P n m a'
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_Int_Tables_number      62

loop_
_space_group_symop_id
_space_group_symop_operation_xyz
1 x,y,z
2 -x+1/2,-y,z+1/2
3 -x,y+1/2,-z
4 x+1/2,-y+1/2,-z+1/2
5 -x,-y,-z
6 x+1/2,y,-z+1/2
7 x,-y+1/2,z
8 -x+1/2,y+1/2,z+1/2

_cell_length_a                   7.7492(6)
_cell_length_b                   8.9524(6)
_cell_length_c                   7.9053(5)
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_volume                     548.42(7)


_cell_formula_units_Z            2
_cell_measurement_temperature    293
_cell_special_details            
; ?
;

_exptl_crystal_density_diffrn    2.861
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    ?
_exptl_crystal_F_000             456

_pd_spec_size_axial              ?
_pd_spec_size_equat              ?
_pd_spec_size_thick              ?
_pd_spec_mounting                ?
_pd_spec_mount_mode              ?
_pd_spec_shape                   ?
_pd_char_particle_morphology     ?
_pd_char_colour                  ?
_pd_prep_cool_rate               ?
_pd_prep_pressure                ?
_pd_prep_temperature             ?

_exptl_absorpt_coefficient_mu    39.398
_exptl_absorpt_correction_type   ?
_exptl_absorpt_process_details   ?
_exptl_absorpt_correction_T_min  ?
_exptl_absorpt_correction_T_max  ?
loop_
_exptl_crystal_face_index_h
_exptl_crystal_face_index_k
_exptl_crystal_face_index_l
_exptl_crystal_face_perp_dist
? ? ? ?

#=======================================================================

# 7. EXPERIMENTAL DATA

_exptl_special_details           ?
_pd_instr_location               
; ?
;
_pd_calibration_special_details  
; ?
;

_diffrn_ambient_temperature      293
_diffrn_source                   ?
_diffrn_source_target            ?
_diffrn_source_type              ?
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.5418
_diffrn_radiation_monochromator  ?
_diffrn_measurement_device       'Riagku SMARTLAB'
_diffrn_measurement_device_type  'Riagku SMARTLAB'
_diffrn_detector                 ?
_diffrn_detector_type            ?

_pd_meas_scan_method             ?
_pd_meas_special_details         
; ?
;
_pd_meas_number_of_points        8001
_pd_meas_2theta_range_min        10.000
_pd_meas_2theta_range_max        90.000
_pd_meas_2theta_range_inc        0.01

_diffrn_radiation_probe          X-ray

#=======================================================================

# 8. REFINEMENT DATA

_pd_proc_ls_special_details      
; ?
;
_pd_proc_ls_profile_function     Pseudo-Voigt
_pd_proc_ls_background_function  '21 Chebyshev polynoms'
_pd_proc_ls_pref_orient_corr     none
_pd_proc_ls_prof_R_factor        0.0316
_pd_proc_ls_prof_wR_factor       0.0509
_pd_proc_ls_prof_wR_expected     0.0262

_refine_special_details          
; ?
;

_refine_ls_R_factor_gt           0.1950
_refine_ls_wR_factor_gt          0.1575
_refine_ls_R_factor_all          0.2069
_refine_ls_wR_factor_all         0.1587
_refine_ls_goodness_of_fit_all   1.95
_refine_ls_restrained_S_gt       ?
_refine_ls_restrained_S_all      ?
_refine_ls_number_parameters     44
_refine_ls_number_restraints     0
_refine_ls_number_constraints    0
_refine_ls_weighting_scheme      sigma
_refine_ls_weighting_details     ?
_refine_ls_hydrogen_treatment    ?
_refine_ls_shift/su_max          0.0348
_refine_ls_shift/su_mean         0.0080
_refine_diff_density_max         ?
_refine_diff_density_min         ?
_refine_ls_extinction_method     ?
_refine_ls_extinction_coef       ?
_refine_ls_extinction_expression ?

_pd_proc_2theta_range_min        10
_pd_proc_2theta_range_max        90
_pd_proc_2theta_range_inc        0.01
_pd_proc_wavelength              ?

_pd_block_diffractogram_id       ?

_pd_proc_info_excluded_regions   ?
_pd_proc_info_data_reduction     ?

loop_
_atom_type_symbol
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
K 0.3868 1.0657 'International Tables Vol C tables 4.2.6.8 and 6.1.1.1'
Mn -0.5299 2.8052 'International Tables Vol C tables 4.2.6.8 and 6.1.1.1'
O 0.0492 0.0322 'International Tables Vol C tables 4.2.6.8 and 6.1.1.1'

_computing_data_collection       ?
_computing_cell_refinement       ?
_computing_data_reduction        ?
_computing_structure_solution    ?
_computing_structure_refinement  ?
_computing_molecular_graphics    ?
_computing_publication_material  ?

loop_
_restr_distance_atom_site_label_1
_restr_distance_site_symmetry_1
_restr_distance_atom_site_label_2
_restr_distance_site_symmetry_2
_restr_distance_target
_restr_distance_target_weight_param
? ? ? ? ? ?

loop_
_restr_angle_atom_site_label_1
_restr_angle_site_symmetry_1
_restr_angle_atom_site_label_2
_restr_angle_site_symmetry_2
_restr_angle_atom_site_label_3
_restr_angle_site_symmetry_3
_restr_angle_target
_restr_angle_target_weight_param
? ? ? ? ? ? ? ?

loop_
_restr_torsion_atom_site_label_1
_restr_torsion_site_symmetry_1
_restr_torsion_atom_site_label_2
_restr_torsion_site_symmetry_2
_restr_torsion_atom_site_label_3
_restr_torsion_site_symmetry_3
_restr_torsion_atom_site_label_4
_restr_torsion_site_symmetry_4
_restr_torsion_angle_target
_restr_torsion_weight_param
? ? ? ? ? ? ? ? ? ?

loop_
_restr_equal_distance_atom_site_label_1
_restr_equal_distance_site_symmetry_1
_restr_equal_distance_atom_site_label_2
_restr_equal_distance_site_symmetry_2
_restr_equal_distance_class_class_id
_restr_equal_distance_class_target_weight_param
? ? ? ? ? ?

loop_
_restr_equal_angle_atom_site_label_1
_restr_equal_angle_site_symmetry_1
_restr_equal_angle_atom_site_label_2
_restr_equal_angle_site_symmetry_2
_restr_equal_angle_atom_site_label_3
_restr_equal_angle_site_symmetry_3
_restr_equal_angle_class_class_id
_restr_equal_angle_class_target_weight_param
? ? ? ? ? ? ? ?

loop_
_restr_equal_torsion_atom_site_label_1
_restr_equal_torsion_site_symmetry_1
_restr_equal_torsion_atom_site_label_2
_restr_equal_torsion_site_symmetry_2
_restr_equal_torsion_atom_site_label_3
_restr_equal_torsion_site_symmetry_3
_restr_equal_torsion_atom_site_label_4
_restr_equal_torsion_site_symmetry_4
_restr_equal_torsion_class_class_id
_restr_equal_torsion_class_target_weight_param
? ? ? ? ? ? ? ? ? ?


#=======================================================================

# 9. ATOMIC COORDINATES AND DISPLACEMENT PARAMETERS

loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_adp_type
_atom_site_U_iso_or_equiv
_atom_site_site_symmetry_multiplicity
_atom_site_occupancy
_atom_site_calc_flag
_atom_site_refinement_flags
_atom_site_disorder_assembly
_atom_site_disorder_group
K1 K 0.1681(12) 0.25 0.5537(11) Uiso 0.050(1) 4 1 d . . .
K2 K 0.4507(8) 0.0415(5) 0.2705(10) Uiso 0.0396(9) 8 1 d . . .
Mn1 Mn 0.2262(9) 0.25 0.0070(10) Uiso 0.0456(8) 4 1 d . . .
O1 O 0.202(3) 0.25 0.250(3) Uiso 0.0608(12) 4 1 d . . .
O2 O 0.160(2) 0.5627(18) 0.443(3) Uiso 0.0972(13) 8 1 d . . .
O3 O -0.004(3) 0.25 0.897(3) Uiso 0.0448(9) 4 1 d . . .


loop_
_jana_atom_site_ADP_C_label
_jana_atom_site_ADP_C_type_symbol
_jana_atom_site_ADP_C_111
_jana_atom_site_ADP_C_112
_jana_atom_site_ADP_C_113
_jana_atom_site_ADP_C_122
_jana_atom_site_ADP_C_123
_jana_atom_site_ADP_C_133
_jana_atom_site_ADP_C_222
_jana_atom_site_ADP_C_223
_jana_atom_site_ADP_C_233
_jana_atom_site_ADP_C_333
? ? ? ? ? ? ? ? ? ? ? ?

loop_
_jana_atom_site_ADP_D_label
_jana_atom_site_ADP_D_type_symbol
_jana_atom_site_ADP_D_1111
_jana_atom_site_ADP_D_1112
_jana_atom_site_ADP_D_1113
_jana_atom_site_ADP_D_1122
_jana_atom_site_ADP_D_1123
_jana_atom_site_ADP_D_1133
_jana_atom_site_ADP_D_1222
_jana_atom_site_ADP_D_1223
_jana_atom_site_ADP_D_1233
_jana_atom_site_ADP_D_1333
_jana_atom_site_ADP_D_2222
_jana_atom_site_ADP_D_2223
_jana_atom_site_ADP_D_2233
_jana_atom_site_ADP_D_2333
_jana_atom_site_ADP_D_3333
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

loop_
_jana_atom_site_ADP_E_label
_jana_atom_site_ADP_E_type_symbol
_jana_atom_site_ADP_E_11111
_jana_atom_site_ADP_E_11112
_jana_atom_site_ADP_E_11113
_jana_atom_site_ADP_E_11122
_jana_atom_site_ADP_E_11123
_jana_atom_site_ADP_E_11133
_jana_atom_site_ADP_E_11222
_jana_atom_site_ADP_E_11223
_jana_atom_site_ADP_E_11233
_jana_atom_site_ADP_E_11333
_jana_atom_site_ADP_E_12222
_jana_atom_site_ADP_E_12223
_jana_atom_site_ADP_E_12233
_jana_atom_site_ADP_E_12333
_jana_atom_site_ADP_E_13333
_jana_atom_site_ADP_E_22222
_jana_atom_site_ADP_E_22223
_jana_atom_site_ADP_E_22233
_jana_atom_site_ADP_E_22333
_jana_atom_site_ADP_E_23333
_jana_atom_site_ADP_E_33333
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

loop_
_jana_atom_site_ADP_F_label
_jana_atom_site_ADP_F_type_symbol
_jana_atom_site_ADP_F_111111
_jana_atom_site_ADP_F_111112
_jana_atom_site_ADP_F_111113
_jana_atom_site_ADP_F_111122
_jana_atom_site_ADP_F_111123
_jana_atom_site_ADP_F_111133
_jana_atom_site_ADP_F_111222
_jana_atom_site_ADP_F_111223
_jana_atom_site_ADP_F_111233
_jana_atom_site_ADP_F_111333
_jana_atom_site_ADP_F_112222
_jana_atom_site_ADP_F_112223
_jana_atom_site_ADP_F_112233
_jana_atom_site_ADP_F_112333
_jana_atom_site_ADP_F_113333
_jana_atom_site_ADP_F_122222
_jana_atom_site_ADP_F_122223
_jana_atom_site_ADP_F_122233
_jana_atom_site_ADP_F_122333
_jana_atom_site_ADP_F_123333
_jana_atom_site_ADP_F_133333
_jana_atom_site_ADP_F_222222
_jana_atom_site_ADP_F_222223
_jana_atom_site_ADP_F_222233
_jana_atom_site_ADP_F_222333
_jana_atom_site_ADP_F_223333
_jana_atom_site_ADP_F_233333
_jana_atom_site_ADP_F_333333
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?


#=======================================================================

# 10. MOLECULAR GEOMETRY


loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
_geom_bond_publ_flag
Mn1 O1 1.9302(25) yes

loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
_geom_angle_publ_flag
Mn1 O1 O2 118.9(5) yes

loop_
_geom_torsion_atom_site_label_1
_geom_torsion_atom_site_label_2
_geom_torsion_atom_site_label_3
_geom_torsion_atom_site_label_4
_geom_torsion_site_symmetry_1
_geom_torsion_site_symmetry_2
_geom_torsion_site_symmetry_3
_geom_torsion_site_symmetry_4
_geom_torsion
_geom_torsion_publ_flag
? ? ? ? ? ? ? ? ? ?

loop_
_geom_hbond_atom_site_label_D
_geom_hbond_atom_site_label_H
_geom_hbond_atom_site_label_A
_geom_hbond_site_symmetry_D
_geom_hbond_site_symmetry_H
_geom_hbond_site_symmetry_A
_geom_hbond_distance_DH
_geom_hbond_distance_HA
_geom_hbond_distance_DA
_geom_hbond_angle_DHA
_geom_hbond_publ_flag
? ? ? ? ? ? ? ? ? ? ?


#=======================================================================

# 11. STRUCTURE-FACTOR LIST

_exptl_crystal_colour            blue
