#------------------------------------------------------------------------------
#$Date: 2025-03-04 21:30:42 +0200 (Tue, 04 Mar 2025) $
#$Revision: 298160 $
#$URL: file:///home/coder/svn-repositories/cod/cif/1/57/34/1573455.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_1573455
loop_
_publ_author_name
'Qi, Liang-Wen'
'Twumasi, Emmanuella Bema'
'Li, Xiao-Wei'
'Li, Rui'
'Lu, Yixin'
_publ_section_title
;
 Reductive coupling of azonaphthalenes for the synthesis of BINAMs
 via a diboron-enabled [5,5]-sigmatropic rearrangement.
;
_journal_issue                   3
_journal_name_full               'Chemical science'
_journal_page_first              1441
_journal_page_last               1446
_journal_paper_doi               10.1039/d4sc06273f
_journal_volume                  16
_journal_year                    2025
_chemical_formula_sum            'C34 H22 Br2 F2 N4 O2'
_chemical_formula_weight         716.37
_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   mixed
_atom_sites_solution_primary     'Dual Space'
_audit_creation_method           SHELXL-2019/1
_audit_update_record
;
2023-09-14 deposited with the CCDC.	2024-12-11 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 127.298(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   13.8725(9)
_cell_length_b                   29.1188(18)
_cell_length_c                   9.3620(6)
_cell_measurement_reflns_used    9870
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      29.48
_cell_measurement_theta_min      3.03
_cell_volume                     3008.4(3)
_computing_cell_refinement       'APEX4 v2021.10-1 (Bruker AXS)'
_computing_data_collection       'APEX4 (Bruker AXS)'
_computing_data_reduction        'SAINT V8.32B (Bruker AXS Inc., 2014)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL--2014 (Sheldrick 2014)'
_computing_structure_solution    'SHELXT--(Sheldrick 2015)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker D8 Venture'
_diffrn_measurement_method       'φ and ω scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0480
_diffrn_reflns_av_unetI/netI     0.0215
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       40
_diffrn_reflns_limit_k_min       -37
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            52265
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         29.579
_diffrn_reflns_theta_min         2.293
_diffrn_source                   'Microfocus Sealed Tube'
_exptl_absorpt_coefficient_mu    2.746
_exptl_absorpt_correction_T_max  0.7459
_exptl_absorpt_correction_T_min  0.6142
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. 
wR2(int) was 0.0893 before and 0.0551 after correction. 
The Ratio of minimum to maximum transmission is 0.8234. 
The λ/2 correction factor is not present. 
;
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.582
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'Not Measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1432
_exptl_crystal_size_max          0.299
_exptl_crystal_size_mid          0.294
_exptl_crystal_size_min          0.124
_refine_diff_density_max         0.984
_refine_diff_density_min         -0.902
_refine_diff_density_rms         0.063
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.034
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     262
_refine_ls_number_reflns         4220
_refine_ls_number_restraints     250
_refine_ls_restrained_S_all      1.030
_refine_ls_R_factor_all          0.0313
_refine_ls_R_factor_gt           0.0266
_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/[σ²(Fo²)+(0.0280P)²+4.8264P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0640
_refine_ls_wR_factor_ref         0.0665
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3810
_reflns_number_total             4220
_reflns_threshold_expression     'I > 2σ(I)'
_cod_data_source_file            d4sc06273f2.cif
_cod_data_source_block           N265
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_absorpt_correction_type' value 'Multi-scan' was
changed to 'multi-scan' 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.

data item '_exptl_crystal_density_meas' value 'Not Measured' was
changed to '?' -- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 8170 2020-07-09 18:12:32Z antanas 

 Adding full bibliography for 1573455.cif.
;
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               1573455
_shelx_shelxl_version_number     2019/1
_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. 
;
_computing_bruker_data_scaling   'SADABS V2016/2 (Bruker AXS Inc.)'
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 0.39107(2) 0.22744(2) 1.01291(2) 0.02618(6) Uani 1 1 d . . . . .
O1 O 0.36555(10) 0.48549(4) 0.67155(14) 0.0188(2) Uani 1 1 d . . . . .
N1 N 0.44705(11) 0.42997(4) 0.52851(16) 0.0146(2) Uani 1 1 d . . . . .
H1 H 0.5144(19) 0.4359(7) 0.631(3) 0.022(5) Uiso 1 1 d . . . . .
N2 N 0.38094(11) 0.47092(4) 0.44870(17) 0.0153(2) Uani 1 1 d . . . . .
H2A H 0.3703(19) 0.4800(7) 0.355(3) 0.024(5) Uiso 1 1 d . . . . .
C1 C 0.35899(12) 0.32898(5) 0.67219(18) 0.0134(2) Uani 1 1 d . . . . .
C2 C 0.40569(12) 0.29867(5) 0.81973(19) 0.0153(3) Uani 1 1 d . . . . .
H2 H 0.488347 0.300488 0.921721 0.018 Uiso 1 1 calc R U . . .
C3 C 0.33052(13) 0.26677(5) 0.81375(19) 0.0166(3) Uani 1 1 d . . . . .
C4 C 0.20806(13) 0.26196(5) 0.6662(2) 0.0182(3) Uani 1 1 d . . . . .
H4 H 0.158585 0.239329 0.665816 0.022 Uiso 1 1 calc R U . . .
C5 C 0.16183(13) 0.29077(5) 0.5227(2) 0.0179(3) Uani 1 1 d . . . . .
H5 H 0.079337 0.287742 0.421171 0.021 Uiso 1 1 calc R U . . .
C6 C 0.23419(12) 0.32494(5) 0.52225(18) 0.0148(3) Uani 1 1 d . . . . .
C7 C 0.18577(13) 0.35589(5) 0.37661(19) 0.0175(3) Uani 1 1 d . . . . .
H7 H 0.103797 0.352763 0.273573 0.021 Uiso 1 1 calc R U . . .
C8 C 0.25521(13) 0.39000(5) 0.38252(19) 0.0167(3) Uani 1 1 d . . . . .
H8 H 0.220475 0.410974 0.285256 0.020 Uiso 1 1 calc R U . . .
C9 C 0.37952(12) 0.39460(5) 0.53317(18) 0.0137(2) Uani 1 1 d . . . . .
C10 C 0.43329(11) 0.36377(5) 0.67456(17) 0.0124(2) Uani 1 1 d . . . . .
C11 C 0.34333(13) 0.49598(5) 0.52659(19) 0.0155(3) Uani 1 1 d D . . . .
C12 C 0.27245(15) 0.53837(5) 0.4273(2) 0.0206(3) Uani 0.873(3) 1 d D U P A 1
C13 C 0.1729(5) 0.53880(14) 0.2490(5) 0.0285(7) Uani 0.873(3) 1 d D U P A 1
C14 C 0.1063(4) 0.57835(11) 0.1629(5) 0.0397(8) Uani 0.873(3) 1 d D U P A 1
H14 H 0.037752 0.577652 0.039973 0.048 Uiso 0.873(3) 1 calc R U P A 1
C15 C 0.1418(3) 0.61862(11) 0.2595(4) 0.0403(7) Uani 0.873(3) 1 d D U P A 1
H15 H 0.097796 0.646075 0.202317 0.048 Uiso 0.873(3) 1 calc R U P A 1
C16 C 0.2412(3) 0.61954(10) 0.4394(4) 0.0358(6) Uani 0.873(3) 1 d D U P A 1
H16 H 0.264951 0.647525 0.504739 0.043 Uiso 0.873(3) 1 calc R U P A 1
C17 C 0.3061(3) 0.57942(9) 0.5242(4) 0.0270(5) Uani 0.873(3) 1 d D U P A 1
H17 H 0.373222 0.579920 0.648016 0.032 Uiso 0.873(3) 1 calc R U P A 1
F1 F 0.13999(11) 0.49885(5) 0.15570(17) 0.0365(4) Uani 0.873(3) 1 d D U P A 1
C12A C 0.27245(15) 0.53837(5) 0.4273(2) 0.0206(3) Uani 0.127(3) 1 d D U P A 2
C13A C 0.287(3) 0.5839(6) 0.486(2) 0.030(3) Uani 0.127(3) 1 d D U P A 2
C14A C 0.214(2) 0.6197(6) 0.379(3) 0.031(3) Uani 0.127(3) 1 d D U P A 2
H14A H 0.230416 0.650204 0.424469 0.038 Uiso 0.127(3) 1 calc R U P A 2
C15A C 0.116(2) 0.6107(8) 0.207(3) 0.033(3) Uani 0.127(3) 1 d D U P A 2
H15A H 0.059135 0.634244 0.135477 0.039 Uiso 0.127(3) 1 calc R U P A 2
C16A C 0.100(3) 0.5679(8) 0.137(3) 0.028(2) Uani 0.127(3) 1 d D U P A 2
H16A H 0.033947 0.562314 0.014856 0.034 Uiso 0.127(3) 1 calc R U P A 2
C17A C 0.179(3) 0.5325(9) 0.239(3) 0.022(2) Uani 0.127(3) 1 d D U P A 2
H17A H 0.170386 0.503879 0.184312 0.027 Uiso 0.127(3) 1 calc R U P A 2
F1A F 0.3867(9) 0.5855(3) 0.6622(13) 0.041(2) Uani 0.127(3) 1 d D U P A 2
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'
Br Br -0.2901 2.4595 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
F F 0.0171 0.0103 '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'
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
C9 N1 N2 113.75(11) . . ?
C9 N1 H1 114.0(14) . . ?
N2 N1 H1 109.8(14) . . ?
C11 N2 N1 120.95(12) . . ?
C11 N2 H2A 121.2(14) . . ?
N1 N2 H2A 117.8(14) . . ?
C2 C1 C6 118.12(12) . . ?
C2 C1 C10 121.52(12) . . ?
C6 C1 C10 120.33(12) . . ?
C3 C2 C1 119.53(13) . . ?
C3 C2 H2 120.2 . . ?
C1 C2 H2 120.2 . . ?
C2 C3 C4 122.98(13) . . ?
C2 C3 Br1 119.73(11) . . ?
C4 C3 Br1 117.28(11) . . ?
C5 C4 C3 118.20(13) . . ?
C5 C4 H4 120.9 . . ?
C3 C4 H4 120.9 . . ?
C4 C5 C6 121.48(13) . . ?
C4 C5 H5 119.3 . . ?
C6 C5 H5 119.3 . . ?
C5 C6 C7 121.73(13) . . ?
C5 C6 C1 119.67(13) . . ?
C7 C6 C1 118.60(13) . . ?
C8 C7 C6 120.88(13) . . ?
C8 C7 H7 119.6 . . ?
C6 C7 H7 119.6 . . ?
C7 C8 C9 120.70(13) . . ?
C7 C8 H8 119.7 . . ?
C9 C8 H8 119.7 . . ?
C10 C9 N1 121.31(12) . . ?
C10 C9 C8 120.85(13) . . ?
N1 C9 C8 117.76(12) . . ?
C9 C10 C1 118.48(12) . . ?
C9 C10 C10 122.85(11) . 2_656 ?
C1 C10 C10 118.61(11) . 2_656 ?
O1 C11 N2 122.89(13) . . ?
O1 C11 C12A 121.26(13) . . ?
N2 C11 C12A 115.85(13) . . ?
O1 C11 C12 121.26(13) . . ?
N2 C11 C12 115.85(13) . . ?
C13 C12 C17 118.3(2) . . ?
C13 C12 C11 123.92(19) . . ?
C17 C12 C11 117.74(16) . . ?
F1 C13 C12 118.1(2) . . ?
F1 C13 C14 119.4(3) . . ?
C12 C13 C14 122.5(3) . . ?
C15 C14 C13 118.5(3) . . ?
C15 C14 H14 120.7 . . ?
C13 C14 H14 120.7 . . ?
C14 C15 C16 120.7(2) . . ?
C14 C15 H15 119.6 . . ?
C16 C15 H15 119.6 . . ?
C15 C16 C17 120.0(3) . . ?
C15 C16 H16 120.0 . . ?
C17 C16 H16 120.0 . . ?
C16 C17 C12 120.0(2) . . ?
C16 C17 H17 120.0 . . ?
C12 C17 H17 120.0 . . ?
C13A C12A C17A 113.8(11) . . ?
C13A C12A C11 130.5(7) . . ?
C17A C12A C11 115.5(9) . . ?
F1A C13A C14A 127.8(15) . . ?
F1A C13A C12A 107.9(11) . . ?
C14A C13A C12A 124.3(13) . . ?
C15A C14A C13A 118.8(17) . . ?
C15A C14A H14A 120.6 . . ?
C13A C14A H14A 120.6 . . ?
C14A C15A C16A 120.1(16) . . ?
C14A C15A H15A 119.9 . . ?
C16A C15A H15A 119.9 . . ?
C15A C16A C17A 121.2(18) . . ?
C15A C16A H16A 119.4 . . ?
C17A C16A H16A 119.4 . . ?
C16A C17A C12A 120.9(17) . . ?
C16A C17A H17A 119.5 . . ?
C12A C17A H17A 119.5 . . ?
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 1.8962(14) . ?
O1 C11 1.2342(18) . ?
N1 C9 1.4106(18) . ?
N1 N2 1.4110(16) . ?
N1 H1 0.86(2) . ?
N2 C11 1.3406(19) . ?
N2 H2A 0.84(2) . ?
C1 C2 1.4220(19) . ?
C1 C6 1.4270(18) . ?
C1 C10 1.4359(19) . ?
C2 C3 1.372(2) . ?
C2 H2 0.9500 . ?
C3 C4 1.404(2) . ?
C4 C5 1.369(2) . ?
C4 H4 0.9500 . ?
C5 C6 1.415(2) . ?
C5 H5 0.9500 . ?
C6 C7 1.419(2) . ?
C7 C8 1.361(2) . ?
C7 H7 0.9500 . ?
C8 C9 1.4260(19) . ?
C8 H8 0.9500 . ?
C9 C10 1.3848(18) . ?
C10 C10 1.501(3) 2_656 ?
C11 C12A 1.499(2) . ?
C11 C12 1.499(2) . ?
C12 C13 1.378(4) . ?
C12 C17 1.399(3) . ?
C13 F1 1.357(4) . ?
C13 C14 1.388(3) . ?
C14 C15 1.377(4) . ?
C14 H14 0.9500 . ?
C15 C16 1.387(4) . ?
C15 H15 0.9500 . ?
C16 C17 1.393(3) . ?
C16 H16 0.9500 . ?
C17 H17 0.9500 . ?
C12A C13A 1.402(16) . ?
C12A C17A 1.429(17) . ?
C13A F1A 1.367(15) . ?
C13A C14A 1.377(16) . ?
C14A C15A 1.362(16) . ?
C14A H14A 0.9500 . ?
C15A C16A 1.363(16) . ?
C15A H15A 0.9500 . ?
C16A C17A 1.378(17) . ?
C16A H16A 0.9500 . ?
C17A H17A 0.9500 . ?
loop_
_geom_hbond_atom_site_label_D
_geom_hbond_atom_site_label_H
_geom_hbond_atom_site_label_A
_geom_hbond_distance_DH
_geom_hbond_distance_HA
_geom_hbond_distance_DA
_geom_hbond_angle_DHA
_geom_hbond_site_symmetry_A
_geom_hbond_publ_flag
N1 H1 O1 0.86(2) 2.13(2) 2.9000(16) 148.8(18) 2_656 yes
N2 H2A O1 0.84(2) 1.96(2) 2.7781(16) 166(2) 6_565 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
_geom_torsion_site_symmetry_1
_geom_torsion_site_symmetry_2
_geom_torsion_site_symmetry_3
_geom_torsion_site_symmetry_4
_geom_torsion_publ_flag
C9 N1 N2 C11 66.65(17) . . . . ?
C6 C1 C2 C3 0.1(2) . . . . ?
C10 C1 C2 C3 178.17(13) . . . . ?
C1 C2 C3 C4 0.8(2) . . . . ?
C1 C2 C3 Br1 -178.20(10) . . . . ?
C2 C3 C4 C5 -0.6(2) . . . . ?
Br1 C3 C4 C5 178.49(12) . . . . ?
C3 C4 C5 C6 -0.7(2) . . . . ?
C4 C5 C6 C7 -177.84(14) . . . . ?
C4 C5 C6 C1 1.6(2) . . . . ?
C2 C1 C6 C5 -1.3(2) . . . . ?
C10 C1 C6 C5 -179.36(13) . . . . ?
C2 C1 C6 C7 178.17(13) . . . . ?
C10 C1 C6 C7 0.1(2) . . . . ?
C5 C6 C7 C8 176.66(14) . . . . ?
C1 C6 C7 C8 -2.8(2) . . . . ?
C6 C7 C8 C9 1.9(2) . . . . ?
N2 N1 C9 C10 -145.63(13) . . . . ?
N2 N1 C9 C8 37.75(17) . . . . ?
C7 C8 C9 C10 1.7(2) . . . . ?
C7 C8 C9 N1 178.39(13) . . . . ?
N1 C9 C10 C1 179.14(12) . . . . ?
C8 C9 C10 C1 -4.3(2) . . . . ?
N1 C9 C10 C10 -3.9(2) . . . 2_656 ?
C8 C9 C10 C10 172.66(13) . . . 2_656 ?
C2 C1 C10 C9 -174.60(13) . . . . ?
C6 C1 C10 C9 3.41(19) . . . . ?
C2 C1 C10 C10 8.3(2) . . . 2_656 ?
C6 C1 C10 C10 -173.71(13) . . . 2_656 ?
N1 N2 C11 O1 1.3(2) . . . . ?
N1 N2 C11 C12A -179.15(12) . . . . ?
N1 N2 C11 C12 -179.15(12) . . . . ?
O1 C11 C12 C13 -128.7(4) . . . . ?
N2 C11 C12 C13 51.8(4) . . . . ?
O1 C11 C12 C17 48.0(3) . . . . ?
N2 C11 C12 C17 -131.6(3) . . . . ?
C17 C12 C13 F1 -179.5(4) . . . . ?
C11 C12 C13 F1 -2.9(8) . . . . ?
C17 C12 C13 C14 0.7(8) . . . . ?
C11 C12 C13 C14 177.4(4) . . . . ?
F1 C13 C14 C15 -179.4(5) . . . . ?
C12 C13 C14 C15 0.3(9) . . . . ?
C13 C14 C15 C16 -0.7(7) . . . . ?
C14 C15 C16 C17 -0.1(6) . . . . ?
C15 C16 C17 C12 1.2(6) . . . . ?
C13 C12 C17 C16 -1.5(6) . . . . ?
C11 C12 C17 C16 -178.3(3) . . . . ?
O1 C11 C12A C13A 50(2) . . . . ?
N2 C11 C12A C13A -129(2) . . . . ?
O1 C11 C12A C17A -134(2) . . . . ?
N2 C11 C12A C17A 47(2) . . . . ?
C17A C12A C13A F1A -174(3) . . . . ?
C11 C12A C13A F1A 2(4) . . . . ?
C17A C12A C13A C14A 5(5) . . . . ?
C11 C12A C13A C14A -179(2) . . . . ?
F1A C13A C14A C15A -178(3) . . . . ?
C12A C13A C14A C15A 3(5) . . . . ?
C13A C14A C15A C16A -7(5) . . . . ?
C14A C15A C16A C17A 3(5) . . . . ?
C15A C16A C17A C12A 6(6) . . . . ?
C13A C12A C17A C16A -10(5) . . . . ?
C11 C12A C17A C16A 174(3) . . . . ?
