#------------------------------------------------------------------------------
#$Date: 2025-07-06 17:34:23 +0300 (Sun, 06 Jul 2025) $
#$Revision: 300640 $
#$URL: file:///home/coder/svn-repositories/cod/cif/1/57/41/1574175.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_1574175
loop_
_publ_author_name
'Yuhara, Kazuhiro'
'Tanaka, Kazuo'
_publ_section_title
;
 Solid-state temperature-dependent luminescence of
 C,C′-diaryl-o-carboranes based on restriction of excited-state
 structural relaxation
;
_journal_issue                   15
_journal_name_full               'Chemical Science'
_journal_page_first              6495
_journal_page_last               6506
_journal_paper_doi               10.1039/D5SC00875A
_journal_volume                  16
_journal_year                    2025
_chemical_formula_moiety         'C22 H22 B10 Br2'
_chemical_formula_sum            'C22 H22 B10 Br2'
_chemical_formula_weight         554.31
_chemical_name_common            Br-Br
_chemical_name_systematic        Br-Br
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2024-12-20 deposited with the CCDC.	2025-03-05 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 123.658(2)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   30.140(7)
_cell_length_b                   10.366(2)
_cell_length_c                   17.799(4)
_cell_measurement_reflns_used    7311
_cell_measurement_temperature    143(2)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      3.0
_cell_volume                     4628.7(17)
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      143(2)
_diffrn_detector_area_resol_mean 28.5714
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Rigaku Saturn724+ (4x4 bin mode)'
_diffrn_measurement_method       'profile data from ω-scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0631
_diffrn_reflns_av_unetI/netI     0.0810
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       39
_diffrn_reflns_limit_h_min       -34
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            18383
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.485
_diffrn_reflns_theta_min         3.100
_exptl_absorpt_coefficient_mu    3.514
_exptl_absorpt_correction_T_max  0.881
_exptl_absorpt_correction_T_min  0.757
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details
'Busing, W.R. & Levy, H.A. (1957) Acta Cryst. 10, 180-182. Coppens, P., Leiserowitz, L. & Rabinovich, D. (1965) Acta Cryst. 18, 1035-1038.'
_exptl_crystal_colour            Orange
_exptl_crystal_density_diffrn    1.591
_exptl_crystal_description       Block
_exptl_crystal_F_000             2192
_exptl_crystal_preparation       Luminescent
_exptl_crystal_size_max          0.250
_exptl_crystal_size_mid          0.150
_exptl_crystal_size_min          0.050
_refine_diff_density_max         0.542
_refine_diff_density_min         -0.498
_refine_diff_density_rms         0.079
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.824
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     307
_refine_ls_number_reflns         5309
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.824
_refine_ls_R_factor_all          0.0421
_refine_ls_R_factor_gt           0.0281
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[σ²(Fo²)+(0.0178P)²] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0611
_refine_ls_wR_factor_ref         0.0631
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3102
_reflns_number_total             5309
_reflns_threshold_expression     'I > 2σ(I)'
_cod_data_source_file            d5sc00875a2.cif
_cod_data_source_block           Br-Br
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_absorpt_correction_type' value 'Numerical' was
changed to 'numerical' 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 1574174--1574180.cif.
;
_cod_original_cell_volume        4629.1(18)
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               1574175
_shelx_shelxl_version_number     2018/3
_shelx_space_group_comment
;
The symmetry employed for this shelxl refinement is uniquely defined
by the following loop, which should always be used as a source of
symmetry information in preference to the above space-group names.
They are only intended as comments.
;
_shelx_estimated_absorpt_t_min   0.474
_shelx_estimated_absorpt_t_max   0.844
loop_
_space_group_symop_operation_xyz
'x, y, z'
'-x, y, -z+1/2'
'x+1/2, y+1/2, z'
'-x+1/2, y+1/2, -z+1/2'
'-x, -y, -z'
'x, -y, z-1/2'
'-x+1/2, -y+1/2, -z'
'x+1/2, -y+1/2, z-1/2'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_adp_type
_atom_site_occupancy
_atom_site_site_symmetry_order
_atom_site_calc_flag
_atom_site_refinement_flags_posn
_atom_site_refinement_flags_adp
_atom_site_refinement_flags_occupancy
_atom_site_disorder_assembly
_atom_site_disorder_group
Br1 Br 0.76067(2) 0.59731(2) 0.34308(2) 0.02674(8) Uani 1 1 d . . . . .
Br2 Br 0.55926(2) 0.91267(2) 0.24535(2) 0.02911(8) Uani 1 1 d . . . . .
C1 C 0.58162(9) 0.4072(2) 0.44584(15) 0.0137(5) Uani 1 1 d . . . . .
C2 C 0.63960(10) 0.3062(2) 0.48254(16) 0.0165(5) Uani 1 1 d . . . . .
C3 C 0.72997(10) 0.4932(2) 0.39144(17) 0.0182(6) Uani 1 1 d . . . . .
C4 C 0.74505(10) 0.5172(2) 0.47997(17) 0.0181(6) Uani 1 1 d . . . . .
C5 C 0.78375(10) 0.6121(2) 0.53635(17) 0.0212(6) Uani 1 1 d . . . . .
H5 H 0.798436 0.663229 0.512528 0.025 Uiso 1 1 calc R U . . .
C6 C 0.79972(10) 0.6301(2) 0.62268(17) 0.0229(6) Uani 1 1 d . . . . .
H6 H 0.823186 0.696519 0.656574 0.028 Uiso 1 1 calc R U . . .
C7 C 0.78041(10) 0.5471(2) 0.66122(17) 0.0216(6) Uani 1 1 d . . . . .
H7 H 0.793392 0.554521 0.722150 0.026 Uiso 1 1 calc R U . . .
C8 C 0.74328(10) 0.4569(2) 0.61040(17) 0.0195(6) Uani 1 1 d . . . . .
H8 H 0.731977 0.402833 0.638333 0.023 Uiso 1 1 calc R U . . .
C9 C 0.72033(10) 0.4399(2) 0.51592(16) 0.0164(5) Uani 1 1 d . . . . .
C10 C 0.67801(10) 0.3534(2) 0.45785(16) 0.0162(5) Uani 1 1 d . . . . .
C11 C 0.66980(9) 0.3191(2) 0.37309(16) 0.0164(5) Uani 1 1 d . . . . .
C12 C 0.63955(10) 0.2119(2) 0.31980(16) 0.0198(6) Uani 1 1 d . . . . .
H12 H 0.625531 0.156237 0.342524 0.024 Uiso 1 1 calc R U . . .
C13 C 0.62997(10) 0.1864(2) 0.23721(17) 0.0231(6) Uani 1 1 d . . . . .
H13 H 0.609019 0.116023 0.204158 0.028 Uiso 1 1 calc R U . . .
C14 C 0.65183(10) 0.2666(2) 0.20152(17) 0.0246(6) Uani 1 1 d . . . . .
H14 H 0.643919 0.251635 0.143806 0.029 Uiso 1 1 calc R U . . .
C15 C 0.68420(10) 0.3650(2) 0.25130(17) 0.0212(6) Uani 1 1 d . . . . .
H15 H 0.699628 0.414950 0.228226 0.025 Uiso 1 1 calc R U . . .
C16 C 0.69535(10) 0.3943(2) 0.33853(16) 0.0182(6) Uani 1 1 d . . . . .
C17 C 0.57753(9) 0.5305(2) 0.39756(16) 0.0171(6) Uani 1 1 d . . . . .
C18 C 0.56863(10) 0.5276(2) 0.31207(16) 0.0181(6) Uani 1 1 d . . . . .
H18 H 0.565872 0.448852 0.284799 0.022 Uiso 1 1 calc R U . . .
C19 C 0.56384(10) 0.6415(2) 0.26731(17) 0.0209(6) Uani 1 1 d . . . . .
H19 H 0.558308 0.639249 0.210472 0.025 Uiso 1 1 calc R U . . .
C20 C 0.56733(10) 0.7583(2) 0.30759(17) 0.0201(6) Uani 1 1 d . . . . .
C21 C 0.57610(10) 0.7631(2) 0.39309(18) 0.0257(6) Uani 1 1 d . . . . .
H21 H 0.578632 0.841908 0.420225 0.031 Uiso 1 1 calc R U . . .
C22 C 0.58095(10) 0.6485(2) 0.43680(16) 0.0218(6) Uani 1 1 d . . . . .
H22 H 0.586630 0.650732 0.493744 0.026 Uiso 1 1 calc R U . . .
B1 B 0.63322(11) 0.4015(3) 0.55796(18) 0.0170(6) Uani 1 1 d . . . . .
H1A H 0.659256 0.485206 0.592236 0.020 Uiso 1 1 calc R U . . .
B2 B 0.56627(12) 0.4026(3) 0.52554(19) 0.0200(7) Uani 1 1 d . . . . .
H2A H 0.549327 0.484546 0.540831 0.024 Uiso 1 1 calc R U . . .
B3 B 0.52859(12) 0.3156(3) 0.42299(19) 0.0200(7) Uani 1 1 d . . . . .
H3A H 0.486907 0.340262 0.371175 0.024 Uiso 1 1 calc R U . . .
B4 B 0.57383(11) 0.2622(3) 0.3953(2) 0.0182(7) Uani 1 1 d . . . . .
H4A H 0.561548 0.255159 0.324593 0.022 Uiso 1 1 calc R U . . .
B5 B 0.61985(12) 0.1521(3) 0.4802(2) 0.0210(7) Uani 1 1 d . . . . .
H5A H 0.636741 0.070557 0.464487 0.025 Uiso 1 1 calc R U . . .
B6 B 0.65750(12) 0.2377(3) 0.58334(19) 0.0194(7) Uani 1 1 d . . . . .
H6A H 0.699032 0.212856 0.635870 0.023 Uiso 1 1 calc R U . . .
B7 B 0.61268(12) 0.2959(3) 0.6111(2) 0.0220(7) Uani 1 1 d . . . . .
H7A H 0.625812 0.308619 0.681961 0.026 Uiso 1 1 calc R U . . .
B8 B 0.55172(12) 0.1536(3) 0.4445(2) 0.0230(7) Uani 1 1 d . . . . .
H8A H 0.524960 0.072587 0.406325 0.028 Uiso 1 1 calc R U . . .
B9 B 0.60321(12) 0.1409(3) 0.5616(2) 0.0229(7) Uani 1 1 d . . . . .
H9A H 0.609511 0.051793 0.599880 0.027 Uiso 1 1 calc R U . . .
B10 B 0.54732(12) 0.2416(3) 0.5264(2) 0.0250(7) Uani 1 1 d . . . . .
H10A H 0.517714 0.217579 0.541996 0.030 Uiso 1 1 calc R U . . .
loop_
_atom_type_symbol
_atom_type_description
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
C C 0.0033 0.0016 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
H H 0.0000 0.0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
B B 0.0013 0.0007 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
Br Br -0.2901 2.4595 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
_geom_angle_site_symmetry_1
_geom_angle_site_symmetry_3
_geom_angle_publ_flag
C17 C1 B4 120.32(19) . . ?
C17 C1 B3 124.6(2) . . ?
B4 C1 B3 62.92(15) . . ?
C17 C1 B2 121.27(19) . . ?
B4 C1 B2 113.03(18) . . ?
B3 C1 B2 62.33(15) . . ?
C17 C1 B1 115.2(2) . . ?
B4 C1 B1 110.77(18) . . ?
B3 C1 B1 112.52(18) . . ?
B2 C1 B1 61.70(15) . . ?
C17 C1 C2 116.85(17) . . ?
B4 C1 C2 60.33(14) . . ?
B3 C1 C2 110.65(18) . . ?
B2 C1 C2 109.41(17) . . ?
B1 C1 C2 59.58(14) . . ?
C10 C2 B5 127.29(19) . . ?
C10 C2 B6 125.7(2) . . ?
B5 C2 B6 62.50(15) . . ?
C10 C2 B1 117.35(19) . . ?
B5 C2 B1 111.19(18) . . ?
B6 C2 B1 62.54(15) . . ?
C10 C2 B4 119.24(19) . . ?
B5 C2 B4 61.93(15) . . ?
B6 C2 B4 111.15(18) . . ?
B1 C2 B4 105.69(17) . . ?
C10 C2 C1 116.24(18) . . ?
B5 C2 C1 106.17(18) . . ?
B6 C2 C1 107.24(16) . . ?
B1 C2 C1 57.45(13) . . ?
B4 C2 C1 56.47(13) . . ?
C16 C3 C4 123.1(2) . . ?
C16 C3 Br1 118.71(17) . . ?
C4 C3 Br1 118.11(19) . . ?
C3 C4 C5 122.9(2) . . ?
C3 C4 C9 118.0(2) . . ?
C5 C4 C9 119.1(2) . . ?
C6 C5 C4 122.3(2) . . ?
C5 C6 C7 119.2(2) . . ?
C8 C7 C6 120.6(2) . . ?
C7 C8 C9 123.6(2) . . ?
C10 C9 C8 125.7(2) . . ?
C10 C9 C4 119.7(2) . . ?
C8 C9 C4 114.5(2) . . ?
C9 C10 C11 118.8(2) . . ?
C9 C10 C2 120.5(2) . . ?
C11 C10 C2 120.5(2) . . ?
C12 C11 C10 124.9(2) . . ?
C12 C11 C16 115.7(2) . . ?
C10 C11 C16 119.4(2) . . ?
C13 C12 C11 123.3(2) . . ?
C12 C13 C14 120.0(2) . . ?
C15 C14 C13 119.9(2) . . ?
C14 C15 C16 121.6(2) . . ?
C3 C16 C15 121.9(2) . . ?
C3 C16 C11 119.0(2) . . ?
C15 C16 C11 119.1(2) . . ?
C22 C17 C18 119.1(2) . . ?
C22 C17 C1 120.2(2) . . ?
C18 C17 C1 120.7(2) . . ?
C19 C18 C17 120.4(2) . . ?
C20 C19 C18 119.6(2) . . ?
C19 C20 C21 120.8(2) . . ?
C19 C20 Br2 119.45(18) . . ?
C21 C20 Br2 119.75(18) . . ?
C22 C21 C20 118.7(2) . . ?
C17 C22 C21 121.4(2) . . ?
C1 B1 C2 62.97(14) . . ?
C1 B1 B2 59.08(15) . . ?
C2 B1 B2 110.0(2) . . ?
C1 B1 B7 106.4(2) . . ?
C2 B1 B7 106.21(19) . . ?
B2 B1 B7 60.20(16) . . ?
C1 B1 B6 107.61(19) . . ?
C2 B1 B6 57.48(14) . . ?
B2 B1 B6 108.6(2) . . ?
B7 B1 B6 59.82(15) . . ?
C1 B2 B1 59.22(14) . . ?
C1 B2 B10 105.60(19) . . ?
B1 B2 B10 107.9(2) . . ?
C1 B2 B3 58.39(14) . . ?
B1 B2 B3 107.31(19) . . ?
B10 B2 B3 60.13(16) . . ?
C1 B2 B7 106.34(19) . . ?
B1 B2 B7 60.00(15) . . ?
B10 B2 B7 60.50(16) . . ?
B3 B2 B7 108.5(2) . . ?
C1 B3 B2 59.28(15) . . ?
C1 B3 B10 106.1(2) . . ?
B2 B3 B10 59.83(16) . . ?
C1 B3 B4 58.43(14) . . ?
B2 B3 B4 107.0(2) . . ?
B10 B3 B4 107.6(2) . . ?
C1 B3 B8 105.7(2) . . ?
B2 B3 B8 108.0(2) . . ?
B10 B3 B8 60.38(16) . . ?
B4 B3 B8 59.71(15) . . ?
C1 B4 B8 106.28(19) . . ?
C1 B4 C2 63.21(14) . . ?
B8 B4 C2 106.0(2) . . ?
C1 B4 B3 58.65(14) . . ?
B8 B4 B3 60.18(15) . . ?
C2 B4 B3 109.58(19) . . ?
C1 B4 B5 107.6(2) . . ?
B8 B4 B5 60.17(16) . . ?
C2 B4 B5 57.00(15) . . ?
B3 B4 B5 108.7(2) . . ?
C2 B5 B6 59.24(15) . . ?
C2 B5 B9 107.15(19) . . ?
B6 B5 B9 59.80(16) . . ?
C2 B5 B8 108.7(2) . . ?
B6 B5 B8 108.4(2) . . ?
B9 B5 B8 60.12(16) . . ?
C2 B5 B4 61.06(15) . . ?
B6 B5 B4 107.9(2) . . ?
B9 B5 B4 107.1(2) . . ?
B8 B5 B4 59.44(16) . . ?
C2 B6 B9 106.8(2) . . ?
C2 B6 B5 58.26(15) . . ?
B9 B6 B5 60.37(16) . . ?
C2 B6 B7 107.6(2) . . ?
B9 B6 B7 60.08(16) . . ?
B5 B6 B7 108.0(2) . . ?
C2 B6 B1 59.99(14) . . ?
B9 B6 B1 106.3(2) . . ?
B5 B6 B1 105.9(2) . . ?
B7 B6 B1 59.07(15) . . ?
B1 B7 B2 59.79(15) . . ?
B1 B7 B9 107.56(19) . . ?
B2 B7 B9 107.7(2) . . ?
B1 B7 B6 61.11(15) . . ?
B2 B7 B6 109.35(19) . . ?
B9 B7 B6 59.62(15) . . ?
B1 B7 B10 107.0(2) . . ?
B2 B7 B10 59.63(16) . . ?
B9 B7 B10 59.77(17) . . ?
B6 B7 B10 108.1(2) . . ?
B4 B8 B3 60.11(15) . . ?
B4 B8 B5 60.39(16) . . ?
B3 B8 B5 108.8(2) . . ?
B4 B8 B9 107.6(2) . . ?
B3 B8 B9 107.8(2) . . ?
B5 B8 B9 59.90(16) . . ?
B4 B8 B10 107.3(2) . . ?
B3 B8 B10 59.69(16) . . ?
B5 B8 B10 107.8(2) . . ?
B9 B8 B10 59.63(17) . . ?
B6 B9 B10 109.0(2) . . ?
B6 B9 B7 60.30(16) . . ?
B10 B9 B7 60.25(17) . . ?
B6 B9 B5 59.83(15) . . ?
B10 B9 B5 108.3(2) . . ?
B7 B9 B5 107.72(19) . . ?
B6 B9 B8 108.3(2) . . ?
B10 B9 B8 60.22(17) . . ?
B7 B9 B8 108.0(2) . . ?
B5 B9 B8 59.99(16) . . ?
B2 B10 B3 60.04(16) . . ?
B2 B10 B9 108.1(2) . . ?
B3 B10 B9 108.4(2) . . ?
B2 B10 B7 59.87(16) . . ?
B3 B10 B7 108.0(2) . . ?
B9 B10 B7 59.98(17) . . ?
B2 B10 B8 107.8(2) . . ?
B3 B10 B8 59.92(16) . . ?
B9 B10 B8 60.16(17) . . ?
B7 B10 B8 107.7(2) . . ?
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
_geom_bond_site_symmetry_2
_geom_bond_publ_flag
Br1 C3 1.909(2) . ?
Br2 C20 1.884(2) . ?
C1 C17 1.507(3) . ?
C1 B4 1.699(3) . ?
C1 B3 1.703(3) . ?
C1 B2 1.719(3) . ?
C1 B1 1.722(3) . ?
C1 C2 1.820(3) . ?
C2 C10 1.529(3) . ?
C2 B5 1.697(3) . ?
C2 B6 1.715(3) . ?
C2 B1 1.761(3) . ?
C2 B4 1.771(4) . ?
C3 C16 1.391(3) . ?
C3 C4 1.399(3) . ?
C4 C5 1.428(3) . ?
C4 C9 1.461(3) . ?
C5 C6 1.345(3) . ?
C6 C7 1.412(3) . ?
C7 C8 1.350(3) . ?
C8 C9 1.431(3) . ?
C9 C10 1.427(3) . ?
C10 C11 1.432(3) . ?
C11 C12 1.417(3) . ?
C11 C16 1.451(3) . ?
C12 C13 1.358(3) . ?
C13 C14 1.412(3) . ?
C14 C15 1.349(3) . ?
C15 C16 1.428(3) . ?
C17 C22 1.383(3) . ?
C17 C18 1.391(3) . ?
C18 C19 1.386(3) . ?
C19 C20 1.381(3) . ?
C20 C21 1.394(3) . ?
C21 C22 1.383(3) . ?
B1 B2 1.765(4) . ?
B1 B7 1.768(4) . ?
B1 B6 1.805(4) . ?
B2 B10 1.768(4) . ?
B2 B3 1.771(4) . ?
B2 B7 1.772(4) . ?
B3 B10 1.773(4) . ?
B3 B4 1.776(4) . ?
B3 B8 1.777(4) . ?
B4 B8 1.769(4) . ?
B4 B5 1.786(4) . ?
B5 B6 1.770(4) . ?
B5 B9 1.780(4) . ?
B5 B8 1.782(4) . ?
B6 B9 1.770(4) . ?
B6 B7 1.782(4) . ?
B7 B9 1.778(4) . ?
B7 B10 1.783(4) . ?
B8 B9 1.784(4) . ?
B8 B10 1.785(4) . ?
B9 B10 1.774(4) . ?
