#------------------------------------------------------------------------------
#$Date: 2016-03-23 01:28:19 +0200 (Wed, 23 Mar 2016) $
#$Revision: 179142 $
#$URL: svn://www.crystallography.net/cod/cif/4/31/03/4310357.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_4310357
loop_
_publ_author_name
'Barton H. Hamilton'
'Kathryn A. Kelly'
'Todd A. Wagler'
'Matthew P. Espe'
'Christopher J. Ziegler'
_publ_section_title
;
 Lead Tetrakis(imidazolyl)borate Solids: Anion Exchange, Solvent
 Intercalation, and Self Assembly of an Organic Anion
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              50
_journal_page_last               56
_journal_paper_doi               10.1021/ic035117d
_journal_volume                  43
_journal_year                    2004
_chemical_formula_sum            'C12 H14.65 B N9 O4.32 Pb'
_chemical_formula_weight         572.18
_chemical_name_common            'Lead tetrakis(imidazolyl)borate nitrate'
_chemical_name_systematic        'Lead tetrakis(imidazolyl)borate nitrate'
_space_group_IT_number           2
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                74.6840(10)
_cell_angle_beta                 79.2840(10)
_cell_angle_gamma                67.0120(10)
_cell_formula_units_Z            2
_cell_length_a                   8.5337(8)
_cell_length_b                   10.7463(9)
_cell_length_c                   11.2476(10)
_cell_measurement_reflns_used    9837
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      33.07
_cell_measurement_theta_min      1.89
_cell_volume                     911.84(14)
_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      100(2)
_diffrn_measured_fraction_theta_full 0.867
_diffrn_measured_fraction_theta_max 0.867
_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  0.0270
_diffrn_reflns_av_sigmaI/netI    0.0504
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            9837
_diffrn_reflns_theta_full        33.07
_diffrn_reflns_theta_max         33.07
_diffrn_reflns_theta_min         1.89
_exptl_absorpt_coefficient_mu    9.293
_exptl_absorpt_correction_type   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    2.084
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             542
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.02
_refine_diff_density_max         2.690
_refine_diff_density_min         -1.682
_refine_diff_density_rms         0.183
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.075
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     275
_refine_ls_number_reflns         5991
_refine_ls_number_restraints     17
_refine_ls_restrained_S_all      1.074
_refine_ls_R_factor_all          0.0371
_refine_ls_R_factor_gt           0.0316
_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)+(0.0300P)²+0.0000P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0702
_refine_ls_wR_factor_ref         0.0721
_reflns_number_gt                5391
_reflns_number_total             5991
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic035117dsi20031029_032249_1.cif
_cod_data_source_block           PbBIm4
_cod_database_code               4310357
loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x, -y, -z'
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
_atom_site_disorder_assembly
_atom_site_disorder_group
Pb1 Pb 0.076466(16) 0.825392(14) -0.339924(12) 0.01724(4) Uani 1 1 d . . .
B1 B 0.2598(5) 0.5901(4) 0.1926(4) 0.0164(7) Uani 1 1 d . A .
N1 N 0.1423(4) 0.6591(3) 0.2973(3) 0.0169(6) Uani 1 1 d . . .
C1 C -0.0305(5) 0.7368(4) 0.2969(4) 0.0221(7) Uani 1 1 d . . .
H1 H -0.0988 0.7611 0.2307 0.034(14) Uiso 1 1 calc R . .
C2 C -0.0842(5) 0.7719(4) 0.4092(4) 0.0231(8) Uani 1 1 d . . .
H2 H -0.1982 0.8252 0.4345 0.015(11) Uiso 1 1 calc R . .
N2 N 0.0518(4) 0.7186(3) 0.4810(3) 0.0197(6) Uani 1 1 d . . .
C3 C 0.1839(5) 0.6521(4) 0.4103(3) 0.0190(7) Uani 1 1 d . . .
H3 H 0.2960 0.6044 0.4359 0.014(10) Uiso 1 1 calc R . .
N3 N 0.2188(4) 0.6945(3) 0.0679(3) 0.0187(6) Uani 1 1 d D . .
C4 C 0.188(6) 0.8322(17) 0.053(3) 0.046(3) Uani 0.25(4) 1 d PD A 1
H4 H 0.2037 0.8776 0.1094 0.056 Uiso 0.25(4) 1 calc PR A 1
C5 C 0.132(5) 0.888(3) -0.059(3) 0.034(2) Uani 0.25(4) 1 d PD A 1
H5 H 0.1007 0.9842 -0.0952 0.041 Uiso 0.25(4) 1 calc PR A 1
C6 C 0.178(5) 0.677(2) -0.0346(19) 0.029(2) Uani 0.25(4) 1 d PD A 1
H6 H 0.1874 0.5901 -0.0469 0.035 Uiso 0.25(4) 1 calc PR A 1
C4' C 0.246(2) 0.8187(9) 0.0267(12) 0.046(3) Uani 0.75(4) 1 d PD A 2
H4' H 0.2982 0.8544 0.0701 0.056 Uiso 0.75(4) 1 calc PR A 2
C5' C 0.185(2) 0.8808(9) -0.0851(12) 0.034(2) Uani 0.75(4) 1 d PD A 2
H5' H 0.1853 0.9681 -0.1327 0.041 Uiso 0.75(4) 1 calc PR A 2
C6' C 0.1453(18) 0.6853(9) -0.0243(7) 0.029(2) Uani 0.75(4) 1 d PD A 2
H6' H 0.1133 0.6097 -0.0231 0.035 Uiso 0.75(4) 1 calc PR A 2
N4 N 0.1231(5) 0.7962(4) -0.1176(3) 0.0270(7) Uani 1 1 d D . .
N5 N 0.2271(4) 0.4596(3) 0.1904(3) 0.0189(6) Uani 1 1 d . . .
C7 C 0.2976(6) 0.3747(5) 0.1054(4) 0.0309(10) Uani 1 1 d . A .
H7 H 0.3810 0.3840 0.0383 0.042(16) Uiso 1 1 calc R . .
C8 C 0.2268(6) 0.2761(5) 0.1348(4) 0.0274(9) Uani 1 1 d . . .
H8 H 0.2516 0.2049 0.0913 0.058(19) Uiso 1 1 calc R A .
N6 N 0.1124(4) 0.2965(3) 0.2387(3) 0.0196(6) Uani 1 1 d . . .
C9 C 0.1186(4) 0.4059(4) 0.2694(3) 0.0179(6) Uani 1 1 d . A .
H9 H 0.0539 0.4421 0.3391 0.020(11) Uiso 1 1 calc R . .
N7 N 0.4471(4) 0.5462(3) 0.2195(3) 0.0150(5) Uani 1 1 d . . .
C10 C 0.5334(5) 0.6282(5) 0.2265(5) 0.0304(9) Uani 1 1 d . A .
H10 H 0.4947 0.7263 0.2030 0.041(16) Uiso 1 1 calc R . .
C11 C 0.6830(5) 0.5439(5) 0.2728(5) 0.0307(9) Uani 1 1 d . . .
H11 H 0.7677 0.5737 0.2872 0.020(11) Uiso 1 1 calc R A .
N8 N 0.6947(4) 0.4093(4) 0.2960(3) 0.0246(7) Uani 1 1 d . . .
C12 C 0.5502(5) 0.4152(4) 0.2645(4) 0.0251(8) Uani 1 1 d . A .
H12 H 0.5216 0.3362 0.2727 0.042(16) Uiso 1 1 calc R . .
N9 N 0.6804(5) 1.0351(4) -0.3188(4) 0.0319(8) Uani 1 1 d . . .
O1 O 0.7753(4) 1.0274(3) -0.2428(3) 0.0343(7) Uani 1 1 d . . .
O2 O 0.5214(5) 1.0729(4) -0.2926(5) 0.0518(11) Uani 1 1 d . . .
O3 O 0.7481(4) 1.0011(4) -0.4203(3) 0.0362(8) Uani 1 1 d . . .
O4 O 0.369(2) 1.078(2) -0.0691(18) 0.091(8) Uani 0.323(15) 1 d P . .
H4A H 0.4444 1.0085 -0.0291 0.110 Uiso 0.323(15) 1 d PR . .
H4B H 0.3647 1.0864 -0.1458 0.110 Uiso 0.323(15) 1 d PR . .
O5 O 0.4185(5) 0.8823(4) -0.3662(4) 0.0520(11) Uani 1 1 d . . .
H5A H 0.3963 0.9215 -0.4405 0.14(4) Uiso 1 1 d R . .
H5B H 0.4409 0.9437 -0.3455 0.06(2) Uiso 1 1 d 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'
Pb Pb -3.3944 10.1111 '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
N6 Pb1 N8 83.86(11) 2_565 2_665 ?
N6 Pb1 N4 80.66(12) 2_565 . ?
N8 Pb1 N4 77.09(12) 2_665 . ?
N6 Pb1 N2 78.30(10) 2_565 1_554 ?
N8 Pb1 N2 79.03(11) 2_665 1_554 ?
N4 Pb1 N2 149.58(11) . 1_554 ?
N5 B1 N7 108.3(3) . . ?
N5 B1 N1 110.2(3) . . ?
N7 B1 N1 108.1(3) . . ?
N5 B1 N3 109.3(3) . . ?
N7 B1 N3 112.7(3) . . ?
N1 B1 N3 108.3(3) . . ?
C3 N1 C1 105.5(3) . . ?
C3 N1 B1 127.8(3) . . ?
C1 N1 B1 126.7(3) . . ?
C2 C1 N1 107.1(3) . . ?
C1 C2 N2 109.8(3) . . ?
C3 N2 C2 104.7(3) . . ?
C3 N2 Pb1 124.2(3) . 1_556 ?
C2 N2 Pb1 124.9(2) . 1_556 ?
N2 C3 N1 112.9(3) . . ?
C6 N3 C6' 12(2) . . ?
C6 N3 C4 107.5(15) . . ?
C6' N3 C4 105.4(13) . . ?
C6 N3 C4' 102.3(9) . . ?
C6' N3 C4' 104.6(5) . . ?
C4 N3 C4' 21.4(15) . . ?
C6 N3 B1 128.6(8) . . ?
C6' N3 B1 127.2(4) . . ?
C4 N3 B1 123.0(13) . . ?
C4' N3 B1 128.2(5) . . ?
C5 C4 N3 104(2) . . ?
C4 C5 N4 114(2) . . ?
N4 C6 N3 112.1(15) . . ?
C5' C4' N3 109.1(7) . . ?
C4' C5' N4 108.0(7) . . ?
N4 C6' N3 111.6(6) . . ?
C6' N4 C6 12(2) . . ?
C6' N4 C5 100.6(13) . . ?
C6 N4 C5 102.3(15) . . ?
C6' N4 C5' 106.7(6) . . ?
C6 N4 C5' 104.2(10) . . ?
C5 N4 C5' 20.3(13) . . ?
C6' N4 Pb1 129.7(4) . . ?
C6 N4 Pb1 126.9(9) . . ?
C5 N4 Pb1 129.7(13) . . ?
C5' N4 Pb1 120.7(5) . . ?
C9 N5 C7 105.2(3) . . ?
C9 N5 B1 126.9(3) . . ?
C7 N5 B1 127.9(3) . . ?
C8 C7 N5 108.2(3) . . ?
C7 C8 N6 108.6(4) . . ?
C9 N6 C8 105.7(3) . . ?
C9 N6 Pb1 125.4(2) . 2_565 ?
C8 N6 Pb1 128.8(3) . 2_565 ?
N6 C9 N5 112.4(3) . . ?
C12 N7 C10 105.0(3) . . ?
C12 N7 B1 125.3(3) . . ?
C10 N7 B1 128.6(3) . . ?
C11 C10 N7 107.4(4) . . ?
C10 C11 N8 109.9(4) . . ?
C12 N8 C11 105.0(3) . . ?
C12 N8 Pb1 116.6(3) . 2_665 ?
C11 N8 Pb1 137.2(3) . 2_665 ?
N8 C12 N7 112.7(4) . . ?
O1 N9 O2 120.4(4) . . ?
O1 N9 O3 118.5(4) . . ?
O2 N9 O3 121.1(4) . . ?
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
Pb1 N6 2.406(3) 2_565 ?
Pb1 N8 2.505(3) 2_665 ?
Pb1 N4 2.523(4) . ?
Pb1 N2 2.643(3) 1_554 ?
B1 N5 1.539(5) . ?
B1 N7 1.544(5) . ?
B1 N1 1.544(5) . ?
B1 N3 1.546(5) . ?
N1 C3 1.357(5) . ?
N1 C1 1.382(5) . ?
C1 C2 1.359(5) . ?
C2 N2 1.383(5) . ?
N2 C3 1.324(4) . ?
N2 Pb1 2.643(3) 1_556 ?
N3 C6 1.342(15) . ?
N3 C6' 1.350(7) . ?
N3 C4 1.368(15) . ?
N3 C4' 1.386(8) . ?
C4 C5 1.338(17) . ?
C5 N4 1.353(15) . ?
C6 N4 1.340(15) . ?
C4' C5' 1.350(8) . ?
C5' N4 1.365(8) . ?
C6' N4 1.340(7) . ?
N5 C9 1.350(4) . ?
N5 C7 1.388(5) . ?
C7 C8 1.355(6) . ?
C8 N6 1.382(5) . ?
N6 C9 1.332(5) . ?
N6 Pb1 2.406(3) 2_565 ?
N7 C12 1.354(5) . ?
N7 C10 1.376(5) . ?
C10 C11 1.348(6) . ?
C11 N8 1.367(6) . ?
N8 C12 1.319(5) . ?
N8 Pb1 2.505(3) 2_665 ?
N9 O1 1.251(5) . ?
N9 O2 1.256(5) . ?
N9 O3 1.257(5) . ?
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
_geom_torsion_site_symmetry_1
_geom_torsion_site_symmetry_2
_geom_torsion_site_symmetry_3
_geom_torsion_site_symmetry_4
_geom_torsion_publ_flag
N5 B1 N1 C3 101.4(4) . . . . ?
N7 B1 N1 C3 -16.8(5) . . . . ?
N3 B1 N1 C3 -139.2(4) . . . . ?
N5 B1 N1 C1 -75.6(4) . . . . ?
N7 B1 N1 C1 166.2(3) . . . . ?
N3 B1 N1 C1 43.8(5) . . . . ?
C3 N1 C1 C2 -0.3(4) . . . . ?
B1 N1 C1 C2 177.3(3) . . . . ?
N1 C1 C2 N2 0.4(5) . . . . ?
C1 C2 N2 C3 -0.3(5) . . . . ?
C1 C2 N2 Pb1 153.0(3) . . . 1_556 ?
C2 N2 C3 N1 0.1(4) . . . . ?
Pb1 N2 C3 N1 -153.4(3) 1_556 . . . ?
C1 N1 C3 N2 0.1(4) . . . . ?
B1 N1 C3 N2 -177.4(3) . . . . ?
N5 B1 N3 C6 -7(2) . . . . ?
N7 B1 N3 C6 114(2) . . . . ?
N1 B1 N3 C6 -127(2) . . . . ?
N5 B1 N3 C6' 8.0(9) . . . . ?
N7 B1 N3 C6' 128.4(8) . . . . ?
N1 B1 N3 C6' -112.0(9) . . . . ?
N5 B1 N3 C4 161(2) . . . . ?
N7 B1 N3 C4 -79(2) . . . . ?
N1 B1 N3 C4 41(2) . . . . ?
N5 B1 N3 C4' -173.4(11) . . . . ?
N7 B1 N3 C4' -53.0(12) . . . . ?
N1 B1 N3 C4' 66.6(11) . . . . ?
C6 N3 C4 C5 -0.4(19) . . . . ?
C6' N3 C4 C5 -12.3(18) . . . . ?
C4' N3 C4 C5 78(4) . . . . ?
B1 N3 C4 C5 -170.3(12) . . . . ?
N3 C4 C5 N4 0(2) . . . . ?
C6' N3 C6 N4 82(5) . . . . ?
C4 N3 C6 N4 0(3) . . . . ?
C4' N3 C6 N4 -21(3) . . . . ?
B1 N3 C6 N4 169.5(13) . . . . ?
C6 N3 C4' C5' 13.2(19) . . . . ?
C6' N3 C4' C5' 1.5(8) . . . . ?
C4 N3 C4' C5' -94(4) . . . . ?
B1 N3 C4' C5' -177.4(5) . . . . ?
N3 C4' C5' N4 -1.5(8) . . . . ?
C6 N3 C6' N4 -81(5) . . . . ?
C4 N3 C6' N4 21.1(17) . . . . ?
C4' N3 C6' N4 -1.0(8) . . . . ?
B1 N3 C6' N4 177.9(5) . . . . ?
N3 C6' N4 C6 80(5) . . . . ?
N3 C6' N4 C5 -19.8(15) . . . . ?
N3 C6' N4 C5' 0.1(9) . . . . ?
N3 C6' N4 Pb1 160.4(5) . . . . ?
N3 C6 N4 C6' -83(5) . . . . ?
N3 C6 N4 C5 0(3) . . . . ?
N3 C6 N4 C5' 21(3) . . . . ?
N3 C6 N4 Pb1 168.7(14) . . . . ?
C4 C5 N4 C6' 11.7(17) . . . . ?
C4 C5 N4 C6 0(3) . . . . ?
C4 C5 N4 C5' -98(5) . . . . ?
C4 C5 N4 Pb1 -168.6(13) . . . . ?
C4' C5' N4 C6' 0.8(8) . . . . ?
C4' C5' N4 C6 -11.0(18) . . . . ?
C4' C5' N4 C5 76(4) . . . . ?
C4' C5' N4 Pb1 -161.6(5) . . . . ?
N6 Pb1 N4 C6' 43.6(8) 2_565 . . . ?
N8 Pb1 N4 C6' -42.2(8) 2_665 . . . ?
N2 Pb1 N4 C6' -3.1(9) 1_554 . . . ?
N6 Pb1 N4 C6 58(2) 2_565 . . . ?
N8 Pb1 N4 C6 -28(2) 2_665 . . . ?
N2 Pb1 N4 C6 11(2) 1_554 . . . ?
N6 Pb1 N4 C5 -136(2) 2_565 . . . ?
N8 Pb1 N4 C5 138(2) 2_665 . . . ?
N2 Pb1 N4 C5 177(2) 1_554 . . . ?
N6 Pb1 N4 C5' -158.5(9) 2_565 . . . ?
N8 Pb1 N4 C5' 115.7(9) 2_665 . . . ?
N2 Pb1 N4 C5' 154.8(8) 1_554 . . . ?
N7 B1 N5 C9 115.5(4) . . . . ?
N1 B1 N5 C9 -2.6(5) . . . . ?
N3 B1 N5 C9 -121.5(4) . . . . ?
N7 B1 N5 C7 -66.8(5) . . . . ?
N1 B1 N5 C7 175.1(4) . . . . ?
N3 B1 N5 C7 56.2(5) . . . . ?
C9 N5 C7 C8 1.3(5) . . . . ?
B1 N5 C7 C8 -176.8(4) . . . . ?
N5 C7 C8 N6 -0.5(5) . . . . ?
C7 C8 N6 C9 -0.5(5) . . . . ?
C7 C8 N6 Pb1 175.7(3) . . . 2_565 ?
C8 N6 C9 N5 1.3(5) . . . . ?
Pb1 N6 C9 N5 -175.0(2) 2_565 . . . ?
C7 N5 C9 N6 -1.6(5) . . . . ?
B1 N5 C9 N6 176.5(3) . . . . ?
N5 B1 N7 C12 -15.5(5) . . . . ?
N1 B1 N7 C12 103.8(4) . . . . ?
N3 B1 N7 C12 -136.5(4) . . . . ?
N5 B1 N7 C10 178.0(4) . . . . ?
N1 B1 N7 C10 -62.6(5) . . . . ?
N3 B1 N7 C10 57.0(5) . . . . ?
C12 N7 C10 C11 0.9(5) . . . . ?
B1 N7 C10 C11 169.5(4) . . . . ?
N7 C10 C11 N8 -0.1(6) . . . . ?
C10 C11 N8 C12 -0.8(5) . . . . ?
C10 C11 N8 Pb1 165.2(3) . . . 2_665 ?
C11 N8 C12 N7 1.5(5) . . . . ?
Pb1 N8 C12 N7 -168.0(3) 2_665 . . . ?
C10 N7 C12 N8 -1.5(5) . . . . ?
B1 N7 C12 N8 -170.6(3) . . . . ?
