#------------------------------------------------------------------------------
#$Date: 2016-03-21 08:09:40 +0200 (Mon, 21 Mar 2016) $
#$Revision: 178597 $
#$URL: svn://www.crystallography.net/cod/cif/4/07/08/4070897.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_4070897
loop_
_publ_author_name
'Shen, Hao'
'Chan, Hoi-Shan'
'Xie, Zuowei'
_publ_section_title
;
 Synthesis, Structural Characterization, and Reactivity of Group 4 Metal
 Complexes Derived from 1-Indenyl-1,2-carborane
;
_journal_issue                   6
_journal_name_full               Organometallics
_journal_page_first              1157
_journal_paper_doi               10.1021/om701108v
_journal_volume                  27
_journal_year                    2008
_chemical_formula_sum            'C40 H76 B18 Hf2 N2 O6'
_chemical_formula_weight         1232.59
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 97.712(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.4478(11)
_cell_length_b                   14.7429(18)
_cell_length_c                   18.820(2)
_cell_measurement_reflns_used    908
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      23.58
_cell_measurement_theta_min      2.56
_cell_volume                     2597.7(5)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0440
_diffrn_reflns_av_sigmaI/netI    0.0531
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            15050
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         1.76
_exptl_absorpt_coefficient_mu    4.039
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.7210
_exptl_absorpt_correction_type   sadabs
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.576
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1224
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.934
_refine_diff_density_min         -1.041
_refine_diff_density_rms         0.132
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.100
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     307
_refine_ls_number_reflns         5124
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.100
_refine_ls_R_factor_all          0.0643
_refine_ls_R_factor_gt           0.0328
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[σ²(Fo²)+(0.0376P)²+2.0424P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0715
_refine_ls_wR_factor_ref         0.0902
_reflns_number_gt                3654
_reflns_number_total             5124
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om701108v-file002.cif
_cod_data_source_block           6(2THF)
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               4070897
loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x+1/2, y+1/2, -z+1/2'
'-x, -y, -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_symmetry_multiplicity
_atom_site_calc_flag
_atom_site_refinement_flags
Hf1 Hf 0.62610(3) 0.483348(17) 0.577675(13) 0.02939(10) Uani 1 1 d .
N1 N 0.7380(5) 0.5957(4) 0.6077(3) 0.0415(13) Uani 1 1 d .
O1 O 0.4065(4) 0.4703(3) 0.5289(2) 0.0320(9) Uani 1 1 d .
O2 O 0.4760(5) 0.5167(3) 0.6574(2) 0.0411(10) Uani 1 1 d .
O3 O 0.4409(16) 0.0113(10) 0.6058(8) 0.240(7) Uani 1 1 d .
C1 C 0.7061(6) 0.3518(4) 0.6722(3) 0.0365(15) Uani 1 1 d .
C2 C 0.8431(6) 0.4060(5) 0.6559(3) 0.0418(16) Uani 1 1 d .
H2 H 0.8791 0.4630 0.6915 0.050 Uiso 1 1 calc R
C11 C 0.6479(7) 0.3745(5) 0.7412(4) 0.0449(17) Uani 1 1 d .
C12 C 0.5172(8) 0.3403(5) 0.7647(4) 0.0452(17) Uani 1 1 d .
C13 C 0.4110(8) 0.2834(5) 0.7309(4) 0.056(2) Uani 1 1 d .
H13A H 0.4153 0.2611 0.6850 0.067 Uiso 1 1 calc R
C14 C 0.2987(9) 0.2614(6) 0.7682(5) 0.071(2) Uani 1 1 d .
H14A H 0.2256 0.2245 0.7465 0.086 Uiso 1 1 calc R
C15 C 0.2926(11) 0.2933(7) 0.8377(6) 0.088(3) Uani 1 1 d .
H15A H 0.2174 0.2764 0.8621 0.106 Uiso 1 1 calc R
C16 C 0.3966(11) 0.3491(7) 0.8696(5) 0.082(3) Uani 1 1 d .
H16A H 0.3932 0.3710 0.9157 0.099 Uiso 1 1 calc R
C17 C 0.5062(9) 0.3724(5) 0.8329(4) 0.061(2) Uani 1 1 d .
C18 C 0.6351(10) 0.4301(7) 0.8581(4) 0.080(3) Uani 1 1 d .
H18A H 0.6080 0.4919 0.8678 0.096 Uiso 1 1 calc R
H18B H 0.6904 0.4049 0.9007 0.096 Uiso 1 1 calc R
C19 C 0.7151(9) 0.4255(6) 0.7949(4) 0.066(2) Uani 1 1 d .
H19A H 0.8017 0.4547 0.7928 0.080 Uiso 1 1 calc R
C20 C 0.8850(8) 0.6226(5) 0.6359(4) 0.066(2) Uani 1 1 d .
H20A H 0.8890 0.6871 0.6426 0.099 Uiso 1 1 calc R
H20B H 0.9484 0.6052 0.6025 0.099 Uiso 1 1 calc R
H20C H 0.9133 0.5929 0.6810 0.099 Uiso 1 1 calc R
C21 C 0.6576(8) 0.6786(5) 0.5895(4) 0.064(2) Uani 1 1 d .
H21A H 0.7158 0.7302 0.6050 0.097 Uiso 1 1 calc R
H21B H 0.5735 0.6789 0.6130 0.097 Uiso 1 1 calc R
H21C H 0.6305 0.6815 0.5385 0.097 Uiso 1 1 calc R
C22 C 0.5053(8) 0.5780(5) 0.7176(4) 0.057(2) Uani 1 1 d .
H22A H 0.4241 0.5803 0.7432 0.085 Uiso 1 1 calc R
H22B H 0.5242 0.6375 0.7004 0.085 Uiso 1 1 calc R
H22C H 0.5871 0.5569 0.7490 0.085 Uiso 1 1 calc R
C23 C 0.3246(7) 0.5035(5) 0.6393(4) 0.0450(17) Uani 1 1 d .
H23A H 0.2771 0.5614 0.6298 0.054 Uiso 1 1 calc R
H23B H 0.2857 0.4743 0.6786 0.054 Uiso 1 1 calc R
C24 C 0.3018(6) 0.4444(5) 0.5733(3) 0.0375(15) Uani 1 1 d .
H24A H 0.3130 0.3809 0.5865 0.045 Uiso 1 1 calc R
H24B H 0.2064 0.4532 0.5480 0.045 Uiso 1 1 calc R
C31 C 0.3479(15) 0.0626(12) 0.5478(7) 0.160(6) Uani 1 1 d .
H31A H 0.4020 0.1107 0.5288 0.192 Uiso 1 1 calc R
H31B H 0.3119 0.0221 0.5089 0.192 Uiso 1 1 calc R
C32 C 0.2340(17) 0.0991(12) 0.5803(9) 0.169(7) Uani 1 1 d .
H32A H 0.2361 0.1648 0.5780 0.203 Uiso 1 1 calc R
H32B H 0.1435 0.0785 0.5550 0.203 Uiso 1 1 calc R
C33 C 0.2467(12) 0.0724(8) 0.6484(7) 0.098(3) Uani 1 1 d .
H33A H 0.1696 0.0305 0.6537 0.117 Uiso 1 1 calc R
H33B H 0.2346 0.1248 0.6781 0.117 Uiso 1 1 calc R
C34 C 0.3754(17) 0.0306(9) 0.6742(6) 0.126(5) Uani 1 1 d .
H34A H 0.3597 -0.0251 0.6995 0.151 Uiso 1 1 calc R
H34B H 0.4359 0.0706 0.7060 0.151 Uiso 1 1 calc R
B3 B 0.8602(8) 0.4084(5) 0.5691(4) 0.0387(18) Uani 1 1 d .
H3 H 0.9121 0.4639 0.5433 0.046 Uiso 1 1 calc R
B4 B 0.7180(8) 0.3437(5) 0.5272(4) 0.0427(19) Uani 1 1 d .
H4 H 0.6701 0.3515 0.4709 0.051 Uiso 1 1 calc R
B5 B 0.6215(8) 0.3110(5) 0.5957(4) 0.0370(18) Uani 1 1 d .
H5 H 0.5055 0.2990 0.5881 0.044 Uiso 1 1 calc R
B6 B 0.8744(8) 0.3015(6) 0.6954(5) 0.049(2) Uani 1 1 d .
H6 H 0.9259 0.2887 0.7505 0.059 Uiso 1 1 calc R
B7 B 0.9711(9) 0.3383(6) 0.6284(5) 0.053(2) Uani 1 1 d .
H7 H 1.0869 0.3501 0.6396 0.063 Uiso 1 1 calc R
B8 B 0.8908(9) 0.2936(6) 0.5460(5) 0.051(2) Uani 1 1 d .
H8 H 0.9531 0.2742 0.5030 0.061 Uiso 1 1 calc R
B9 B 0.7393(9) 0.2324(5) 0.5640(4) 0.048(2) Uani 1 1 d .
H9 H 0.7013 0.1723 0.5324 0.058 Uiso 1 1 calc R
B10 B 0.7285(9) 0.2371(5) 0.6557(4) 0.048(2) Uani 1 1 d .
H10 H 0.6832 0.1815 0.6846 0.057 Uiso 1 1 calc R
B11 B 0.8958(9) 0.2295(6) 0.6259(5) 0.054(2) Uani 1 1 d .
H11 H 0.9618 0.1681 0.6350 0.065 Uiso 1 1 calc R
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'
N N 0.0061 0.0033 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
O O 0.0106 0.0060 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
Hf Hf -0.5830 6.1852 '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
N1 Hf1 O1 90.27(18) . 3_666
N1 Hf1 O1 129.27(19) . .
O1 Hf1 O1 67.29(16) 3_666 .
N1 Hf1 O2 89.28(19) . .
O1 Hf1 O2 122.68(15) 3_666 .
O1 Hf1 O2 69.43(15) . .
N1 Hf1 B4 126.6(2) . .
O1 Hf1 B4 85.3(2) 3_666 .
O1 Hf1 B4 97.4(2) . .
O2 Hf1 B4 136.2(2) . .
N1 Hf1 B3 86.9(2) . .
O1 Hf1 B3 95.73(19) 3_666 .
O1 Hf1 B3 137.8(2) . .
O2 Hf1 B3 141.41(19) . .
B4 Hf1 B3 41.2(2) . .
N1 Hf1 B5 143.0(2) . .
O1 Hf1 B5 116.46(19) 3_666 .
O1 Hf1 B5 86.3(2) . .
O2 Hf1 B5 96.0(2) . .
B4 Hf1 B5 40.5(2) . .
B3 Hf1 B5 66.5(2) . .
N1 Hf1 C2 81.8(2) . .
O1 Hf1 C2 132.94(18) 3_666 .
O1 Hf1 C2 146.54(18) . .
O2 Hf1 C2 103.63(18) . .
B4 Hf1 C2 64.2(2) . .
B3 Hf1 C2 37.8(2) . .
B5 Hf1 C2 61.3(2) . .
N1 Hf1 C1 108.7(2) . .
O1 Hf1 C1 149.72(17) 3_666 .
O1 Hf1 C1 112.83(16) . .
O2 Hf1 C1 82.05(17) . .
B4 Hf1 C1 64.5(2) . .
B3 Hf1 C1 63.1(2) . .
B5 Hf1 C1 37.0(2) . .
C2 Hf1 C1 34.87(18) . .
N1 Hf1 Hf1 112.85(15) . 3_666
O1 Hf1 Hf1 34.19(10) 3_666 3_666
O1 Hf1 Hf1 33.10(10) . 3_666
O2 Hf1 Hf1 96.07(11) . 3_666
B4 Hf1 Hf1 91.73(18) . 3_666
B3 Hf1 Hf1 120.70(16) . 3_666
B5 Hf1 Hf1 102.98(16) . 3_666
C2 Hf1 Hf1 155.72(15) . 3_666
C1 Hf1 Hf1 138.39(13) . 3_666
C21 N1 C20 107.2(6) . .
C21 N1 Hf1 112.9(4) . .
C20 N1 Hf1 139.5(5) . .
C24 O1 Hf1 128.4(3) . 3_666
C24 O1 Hf1 118.3(3) . .
Hf1 O1 Hf1 112.71(16) 3_666 .
C23 O2 C22 110.5(5) . .
C23 O2 Hf1 120.5(3) . .
C22 O2 Hf1 125.9(4) . .
C31 O3 C34 104.7(12) . .
C11 C1 C2 117.1(5) . .
C11 C1 B5 129.4(5) . .
C2 C1 B5 108.9(5) . .
C11 C1 B10 115.8(5) . .
C2 C1 B10 109.5(5) . .
B5 C1 B10 63.2(4) . .
C11 C1 B6 107.5(5) . .
C2 C1 B6 61.7(4) . .
B5 C1 B6 112.1(5) . .
B10 C1 B6 60.3(4) . .
C11 C1 Hf1 107.9(4) . .
C2 C1 Hf1 70.8(3) . .
B5 C1 Hf1 68.0(3) . .
B10 C1 Hf1 128.2(4) . .
B6 C1 Hf1 129.7(4) . .
C1 C2 B3 113.0(5) . .
C1 C2 B7 113.3(6) . .
B3 C2 B7 63.1(4) . .
C1 C2 B6 64.0(4) . .
B3 C2 B6 114.2(6) . .
B7 C2 B6 61.1(4) . .
C1 C2 Hf1 74.4(3) . .
B3 C2 Hf1 67.1(3) . .
B7 C2 Hf1 128.3(4) . .
B6 C2 Hf1 135.2(4) . .
C19 C11 C12 107.4(7) . .
C19 C11 C1 125.2(7) . .
C12 C11 C1 127.2(6) . .
C17 C12 C13 119.4(7) . .
C17 C12 C11 109.6(7) . .
C13 C12 C11 131.0(7) . .
C14 C13 C12 117.5(8) . .
C13 C14 C15 121.7(9) . .
C16 C15 C14 119.9(9) . .
C15 C16 C17 118.9(9) . .
C16 C17 C12 122.6(9) . .
C16 C17 C18 128.3(8) . .
C12 C17 C18 109.1(7) . .
C19 C18 C17 101.4(7) . .
C11 C19 C18 112.6(8) . .
O2 C23 C24 107.5(5) . .
O1 C24 C23 107.0(5) . .
C32 C31 O3 106.4(12) . .
C33 C32 C31 109.1(13) . .
C32 C33 C34 115.4(12) . .
C33 C34 O3 102.8(10) . .
C2 B3 B4 105.2(5) . .
C2 B3 B7 59.5(4) . .
B4 B3 B7 108.8(6) . .
C2 B3 B8 105.1(5) . .
B4 B3 B8 60.8(4) . .
B7 B3 B8 59.6(5) . .
C2 B3 Hf1 75.1(3) . .
B4 B3 Hf1 68.7(3) . .
B7 B3 Hf1 132.5(5) . .
B8 B3 Hf1 127.6(5) . .
B5 B4 B3 105.3(5) . .
B5 B4 B9 60.1(4) . .
B3 B4 B9 106.7(6) . .
B5 B4 B8 107.1(5) . .
B3 B4 B8 60.6(5) . .
B9 B4 B8 59.2(4) . .
B5 B4 Hf1 72.6(3) . .
B3 B4 Hf1 70.2(3) . .
B9 B4 Hf1 130.1(5) . .
B8 B4 Hf1 128.9(5) . .
C1 B5 B4 107.6(5) . .
C1 B5 B9 106.2(5) . .
B4 B5 B9 61.0(4) . .
C1 B5 B10 60.4(4) . .
B4 B5 B10 109.2(6) . .
B9 B5 B10 58.9(4) . .
C1 B5 Hf1 75.0(3) . .
B4 B5 Hf1 66.9(3) . .
B9 B5 Hf1 125.7(5) . .
B10 B5 Hf1 132.2(5) . .
B11 B6 C2 104.8(6) . .
B11 B6 B7 60.9(5) . .
C2 B6 B7 58.9(4) . .
B11 B6 B10 60.5(5) . .
C2 B6 B10 102.8(5) . .
B7 B6 B10 108.6(6) . .
B11 B6 C1 105.5(6) . .
C2 B6 C1 54.3(4) . .
B7 B6 C1 103.5(5) . .
B10 B6 C1 59.3(4) . .
C2 B7 B6 60.0(4) . .
C2 B7 B11 104.1(6) . .
B6 B7 B11 58.9(5) . .
C2 B7 B3 57.4(4) . .
B6 B7 B3 108.5(5) . .
B11 B7 B3 108.4(6) . .
C2 B7 B8 104.4(5) . .
B6 B7 B8 108.4(6) . .
B11 B7 B8 60.6(5) . .
B3 B7 B8 60.8(4) . .
B7 B8 B9 106.7(6) . .
B7 B8 B11 59.5(5) . .
B9 B8 B11 59.6(5) . .
B7 B8 B3 59.6(4) . .
B9 B8 B3 106.1(5) . .
B11 B8 B3 106.6(6) . .
B7 B8 B4 107.1(6) . .
B9 B8 B4 60.3(4) . .
B11 B8 B4 108.0(6) . .
B3 B8 B4 58.7(4) . .
B10 B9 B11 60.0(5) . .
B10 B9 B8 109.1(6) . .
B11 B9 B8 60.4(5) . .
B10 B9 B5 61.1(4) . .
B11 B9 B5 107.7(6) . .
B8 B9 B5 107.1(6) . .
B10 B9 B4 109.2(6) . .
B11 B9 B4 108.7(6) . .
B8 B9 B4 60.4(4) . .
B5 B9 B4 58.9(4) . .
C1 B10 B9 103.9(5) . .
C1 B10 B11 104.8(6) . .
B9 B10 B11 60.3(5) . .
C1 B10 B6 60.3(4) . .
B9 B10 B6 107.2(6) . .
B11 B10 B6 58.6(5) . .
C1 B10 B5 56.3(4) . .
B9 B10 B5 60.1(4) . .
B11 B10 B5 107.2(6) . .
B6 B10 B5 106.6(5) . .
B6 B11 B10 60.8(5) . .
B6 B11 B7 60.2(5) . .
B10 B11 B7 108.3(6) . .
B6 B11 B9 108.4(6) . .
B10 B11 B9 59.7(5) . .
B7 B11 B9 107.4(6) . .
B6 B11 B8 109.0(6) . .
B10 B11 B8 108.4(6) . .
B7 B11 B8 60.0(5) . .
B9 B11 B8 60.0(5) . .
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
_geom_bond_site_symmetry_2
Hf1 N1 2.005(5) .
Hf1 O1 2.101(4) 3_666
Hf1 O1 2.162(4) .
Hf1 O2 2.253(4) .
Hf1 B4 2.473(8) .
Hf1 B3 2.497(7) .
Hf1 B5 2.564(7) .
Hf1 C2 2.619(6) .
Hf1 C1 2.671(6) .
Hf1 Hf1 3.5491(6) 3_666
N1 C21 1.456(9) .
N1 C20 1.472(8) .
O1 C24 1.431(7) .
O1 Hf1 2.101(4) 3_666
O2 C23 1.438(7) .
O2 C22 1.446(7) .
O3 C31 1.508(16) .
O3 C34 1.528(17) .
C1 C11 1.514(9) .
C1 C2 1.586(8) .
C1 B5 1.663(9) .
C1 B10 1.738(10) .
C1 B6 1.756(9) .
C2 B3 1.663(9) .
C2 B7 1.701(10) .
C2 B6 1.720(10) .
C11 C19 1.348(9) .
C11 C12 1.457(9) .
C12 C17 1.385(10) .
C12 C13 1.394(10) .
C13 C14 1.388(10) .
C14 C15 1.398(12) .
C15 C16 1.358(13) .
C16 C17 1.363(11) .
C17 C18 1.508(12) .
C18 C19 1.495(11) .
C23 C24 1.509(9) .
C31 C32 1.414(16) .
C32 C33 1.331(15) .
C33 C34 1.392(15) .
B3 B4 1.747(11) .
B3 B7 1.760(10) .
B3 B8 1.781(11) .
B4 B5 1.744(10) .
B4 B9 1.782(11) .
B4 B8 1.785(11) .
B5 B9 1.766(11) .
B5 B10 1.784(10) .
B6 B11 1.717(12) .
B6 B7 1.740(11) .
B6 B10 1.756(12) .
B7 B11 1.752(12) .
B7 B8 1.761(13) .
B8 B9 1.763(12) .
B8 B11 1.771(11) .
B9 B10 1.745(11) .
B9 B11 1.757(12) .
B10 B11 1.750(12) .
