# Electronic Supplementary Material (ESI) for Dalton Transactions
# This journal is © The Royal Society of Chemistry 2013


#######################################################################
#
#                 Cambridge Crystallographic Data Centre
#                                CCDC 
# 
#######################################################################
# 
#  This CIF contains data from an original supplementary publication 
#  deposited with the CCDC, and may include chemical, crystal,   
#  experimental, refinement, atomic coordinates, 
#  anisotropic displacement parameters and molecular geometry data,
#  as required by the journal to which it was submitted. 
# 
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#  fide research purposes only. It may contain copyright material 
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#  except for the purpose of generating routine backup copies 
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#  data retrieval see:
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data_be46jea1n
_database_code_depnum_ccdc_archive 'CCDC 855222'
#TrackingRef 'ccdc_dep C21 H14 N4.cif'
_audit_creation_date             2011-08-30T12:54:27-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.3
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
#----------------------------------------------------------------------------#
# CHEMICAL INFORMATION #
#----------------------------------------------------------------------------#
_chemical_name_systematic        
;
?
;
_chemical_formula_moiety         'C21 H14 N4'
_chemical_formula_sum            'C21 H14 N4'
_chemical_formula_weight         322.36
_chemical_compound_source        'synthesis as described'
#----------------------------------------------------------------------------#
# UNIT CELL INFORMATION #
#----------------------------------------------------------------------------#
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'P 2/c'
_symmetry_space_group_name_Hall  '-P 2yc'
_symmetry_Int_Tables_number      13
loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x, y, -z+1/2'
'-x, -y, -z'
'x, -y, z-1/2'
_cell_length_a                   25.4796(32)
_cell_length_b                   6.8649(7)
_cell_length_c                   8.9741(11)
_cell_angle_alpha                90
_cell_angle_beta                 99.204(7)
_cell_angle_gamma                90
_cell_volume                     1549.5(3)
_cell_formula_units_Z            4
_cell_measurement_temperature    100(2)
_cell_measurement_reflns_used    1975
_cell_measurement_theta_min      2.43
_cell_measurement_theta_max      26.33
_cell_measurement_wavelength     0.71073
#----------------------------------------------------------------------------#
# CRYSTAL INFORMATION #
#----------------------------------------------------------------------------#
_exptl_crystal_description       plate
_exptl_crystal_colour            orange
_exptl_crystal_size_max          0.33
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.09
_exptl_crystal_density_diffrn    1.382
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             672
_exptl_special_details           
;
?
;
#----------------------------------------------------------------------------#
# ABSORPTION CORRECTION #
#----------------------------------------------------------------------------#
_exptl_absorpt_coefficient_mu    0.085
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'BRUKER SADABS'
_exptl_absorpt_correction_T_min  0.9456
_exptl_absorpt_correction_T_max  1
#----------------------------------------------------------------------------#
# DATA COLLECTION #
#----------------------------------------------------------------------------#
_diffrn_ambient_temperature      100(2)
_diffrn_radiation_wavelength     0.7107
_diffrn_radiation_type           MoK\a
_diffrn_radiation_probe          x-ray
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_monochromator  graphite
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'BRUKER APPEX-II CCD'
_diffrn_measurement_method       'omega and phi scans'
_diffrn_reflns_av_R_equivalents  0.0278
_diffrn_reflns_av_unetI/netI     0.0162
_diffrn_reflns_number            31527
_diffrn_reflns_limit_h_min       -31
_diffrn_reflns_limit_h_max       31
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_theta_min         0.81
_diffrn_reflns_theta_max         26.41
_diffrn_reflns_theta_full        26.41
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_reflns_number_total             3177
_reflns_number_gt                2601
_reflns_threshold_expression     >2sigma(I)
#----------------------------------------------------------------------------#
# COMPUTER PROGRAMS USED #
#----------------------------------------------------------------------------#
_computing_data_collection       'APPEX2 (BRUKER AXS, 2005)'
_computing_cell_refinement       'APPEX2 (BRUKER AXS, 2005)'
_computing_data_reduction        'APPEX2 (BRUKER AXS, 2005)'
_computing_structure_solution    'SIR97 (Giacovazzo et al, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
#----------------------------------------------------------------------------#
# STRUCTURE SOLUTION
#----------------------------------------------------------------------------#
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_atom_sites_solution_hydrogens   geom
#----------------------------------------------------------------------------#
# REFINEMENT INFORMATION #
#----------------------------------------------------------------------------#
_refine_special_details          
;
Refinement of F^2^ against ALL reflections. The weighted R-factor wR and
goodness of fit S are based on F^2^, conventional R-factors R are based
on F, with F set to zero for negative F^2^. The threshold expression of
F^2^ > 2sigma(F^2^) is used only for calculating R-factors(gt) etc. and is
not relevant to the choice of reflections for refinement. R-factors based
on F^2^ are statistically about twice as large as those based on F, and R-
factors based on ALL data will be even larger.
;
_refine_ls_structure_factor_coef Fsqd
_refine_ls_matrix_type           full
_refine_ls_weighting_scheme      calc
_refine_ls_weighting_details     
'calc w=1/[\s^2^(Fo^2^)+(0.0740P)^2^+0.3519P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_hydrogen_treatment    mixed
_refine_ls_extinction_method     none
_refine_ls_number_reflns         3177
_refine_ls_number_parameters     235
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0501
_refine_ls_R_factor_gt           0.0378
_refine_ls_wR_factor_ref         0.1277
_refine_ls_wR_factor_gt          0.1101
_refine_ls_goodness_of_fit_ref   1.084
_refine_ls_restrained_S_all      1.084
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0
_refine_diff_density_max         0.237
_refine_diff_density_min         -0.235
_refine_diff_density_rms         0.055
#----------------------------------------------------------------------------#
# ATOMIC TYPES, COORDINATES AND THERMAL PARAMETERS #
#----------------------------------------------------------------------------#
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 0 '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'
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
C1 C 0.71207(5) 0.36312(17) 0.63766(14) 0.0197(3) Uani 1 1 d . . .
C2 C 0.68610(5) 0.19406(18) 0.57755(15) 0.0224(3) Uani 1 1 d . . .
H2 H 0.6501 0.1781 0.5819 0.027 Uiso 1 1 calc R . .
C3 C 0.71279(5) 0.05070(19) 0.51196(16) 0.0252(3) Uani 1 1 d . . .
H3 H 0.6945 -0.0593 0.4717 0.03 Uiso 1 1 calc R . .
C4 C 0.76704(6) 0.06900(19) 0.50530(15) 0.0240(3) Uani 1 1 d . . .
C5 C 0.79587(6) -0.0779(2) 0.43810(17) 0.0314(3) Uani 1 1 d . . .
H5 H 0.7778 -0.1875 0.396 0.038 Uiso 1 1 calc R . .
C6 C 0.84830(6) -0.0613(2) 0.43447(18) 0.0334(4) Uani 1 1 d . . .
H6 H 0.8656 -0.1592 0.3898 0.04 Uiso 1 1 calc R . .
C7 C 0.87787(6) 0.1047(2) 0.49819(16) 0.0287(3) Uani 1 1 d . . .
C8 C 0.93247(6) 0.1258(2) 0.49653(19) 0.0372(4) Uani 1 1 d . . .
H8 H 0.9507 0.0289 0.4535 0.045 Uiso 1 1 calc R . .
C9 C 0.95962(6) 0.2888(3) 0.5580(2) 0.0423(4) Uani 1 1 d . . .
H9 H 0.9959 0.3003 0.5561 0.051 Uiso 1 1 calc R . .
C10 C 0.93328(6) 0.4347(3) 0.6223(2) 0.0394(4) Uani 1 1 d . . .
H10 H 0.9521 0.5434 0.6633 0.047 Uiso 1 1 calc R . .
C11 C 0.87876(6) 0.4212(2) 0.62665(17) 0.0294(3) Uani 1 1 d . . .
C12 C 0.85013(6) 0.5684(2) 0.69290(18) 0.0322(4) Uani 1 1 d . . .
H12 H 0.8683 0.6777 0.735 0.039 Uiso 1 1 calc R . .
C13 C 0.79751(6) 0.5535(2) 0.69619(17) 0.0278(3) Uani 1 1 d . . .
H13 H 0.7805 0.6529 0.7402 0.033 Uiso 1 1 calc R . .
C14 C 0.76706(5) 0.38775(18) 0.63321(15) 0.0207(3) Uani 1 1 d . . .
C15 C 0.79464(5) 0.23796(18) 0.56702(14) 0.0210(3) Uani 1 1 d . . .
C16 C 0.85032(5) 0.2547(2) 0.56359(15) 0.0244(3) Uani 1 1 d . . .
C17 C 0.68093(5) 0.50944(18) 0.70557(15) 0.0209(3) Uani 1 1 d . . .
H17 H 0.6990(6) 0.633(2) 0.7433(17) 0.025 Uiso 1 1 d . . .
C18 C 0.60347(5) 0.62706(17) 0.77506(15) 0.0201(3) Uani 1 1 d . . .
C19 C 0.56388(5) 0.57372(17) 0.86314(15) 0.0208(3) Uani 1 1 d . . .
C20 C 0.54773(6) 0.89778(19) 0.89064(18) 0.0317(4) Uani 1 1 d . . .
H20 H 0.5298 0.9931 0.9361 0.038 Uiso 1 1 calc R . .
C21 C 0.60840(5) 0.82186(18) 0.74441(15) 0.0230(3) Uani 1 1 d . . .
H21 H 0.632 0.8581 0.6802 0.028 Uiso 1 1 calc R . .
N1 N 0.63235(4) 0.47724(15) 0.71835(12) 0.0212(3) Uani 1 1 d . . .
N2 N 0.55397(5) 0.38746(15) 0.89113(14) 0.0237(3) Uani 1 1 d . . .
H1N H 0.5692(6) 0.296(2) 0.8440(18) 0.028 Uiso 1 1 d . . .
H2N H 0.5270(7) 0.359(2) 0.9380(18) 0.028 Uiso 1 1 d . . .
N3 N 0.53647(5) 0.71407(15) 0.92345(14) 0.0281(3) Uani 1 1 d . . .
N4 N 0.58091(5) 0.96328(15) 0.80237(14) 0.0279(3) Uani 1 1 d . . .
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_23
_atom_site_aniso_U_13
_atom_site_aniso_U_12
C1 0.0233(7) 0.0182(6) 0.0184(6) 0.0020(5) 0.0057(5) 0.0031(5)
C2 0.0220(7) 0.0222(6) 0.0241(7) 0.0011(5) 0.0067(5) 0.0001(5)
C3 0.0281(8) 0.0209(6) 0.0270(7) -0.0032(5) 0.0057(6) -0.0016(5)
C4 0.0273(7) 0.0254(6) 0.0199(7) -0.0015(5) 0.0051(5) 0.0051(5)
C5 0.0342(8) 0.0289(7) 0.0315(8) -0.0107(6) 0.0061(6) 0.0039(6)
C6 0.0334(9) 0.0350(8) 0.0331(8) -0.0094(6) 0.0091(6) 0.0115(6)
C7 0.0261(8) 0.0362(8) 0.0242(7) -0.0006(6) 0.0049(6) 0.0084(6)
C8 0.0271(8) 0.0476(9) 0.0379(9) -0.0039(7) 0.0081(7) 0.0129(7)
C9 0.0207(8) 0.0543(10) 0.0526(10) -0.0022(8) 0.0079(7) 0.0049(7)
C10 0.0237(8) 0.0453(9) 0.0491(10) -0.0077(8) 0.0052(7) -0.0011(7)
C11 0.0237(7) 0.0353(7) 0.0293(8) -0.0009(6) 0.0041(6) 0.0014(6)
C12 0.0267(8) 0.0318(7) 0.0381(9) -0.0086(6) 0.0053(6) -0.0035(6)
C13 0.0265(8) 0.0253(7) 0.0325(8) -0.0061(6) 0.0079(6) 0.0009(5)
C14 0.0217(7) 0.0219(6) 0.0190(6) 0.0016(5) 0.0044(5) 0.0020(5)
C15 0.0232(7) 0.0244(6) 0.0154(6) 0.0013(5) 0.0033(5) 0.0034(5)
C16 0.0237(7) 0.0303(7) 0.0196(7) 0.0010(5) 0.0042(5) 0.0056(5)
C17 0.0231(7) 0.0188(6) 0.0214(7) 0.0010(5) 0.0051(5) 0.0011(5)
C18 0.0199(6) 0.0182(6) 0.0230(7) 0.0001(5) 0.0061(5) 0.0008(5)
C19 0.0222(7) 0.0173(6) 0.0241(7) 0.0001(5) 0.0069(5) 0.0002(5)
C20 0.0352(8) 0.0168(6) 0.0491(9) -0.0019(6) 0.0247(7) 0.0010(6)
C21 0.0215(7) 0.0207(6) 0.0290(7) 0.0024(5) 0.0111(5) 0.0008(5)
N1 0.0239(6) 0.0180(5) 0.0233(6) 0.0011(4) 0.0087(5) 0.0025(4)
N2 0.0281(7) 0.0151(5) 0.0313(7) -0.0003(4) 0.0153(5) -0.0012(4)
N3 0.0318(7) 0.0175(5) 0.0399(7) -0.0008(5) 0.0207(5) -0.0002(4)
N4 0.0276(6) 0.0166(5) 0.0433(7) 0.0016(5) 0.0174(5) 0.0006(4)
#----------------------------------------------------------------------------#
# MOLECULAR GEOMETRY #
#----------------------------------------------------------------------------#
_geom_special_details            
;
All esds (except the esd in the dihedral angle between two l.s. planes)
are estimated using the full covariance matrix. The cell esds are taken
into account individually in the estimation of esds in distances, angles
and torsion angles; correlations between esds in cell parameters are only
used when they are defined by crystal symmetry. An approximate (isotropic)
treatment of cell esds is used for estimating esds involving l.s. planes.
;
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
C1 C2 1.4006(19) . ?
C1 C14 1.4182(18) . ?
C1 C17 1.4712(18) . ?
C2 C3 1.3805(19) . ?
C2 H2 0.93 . ?
C3 C4 1.3989(19) . ?
C3 H3 0.93 . ?
C4 C15 1.422(2) . ?
C4 C5 1.4360(19) . ?
C5 C6 1.346(2) . ?
C5 H5 0.93 . ?
C6 C7 1.433(2) . ?
C6 H6 0.93 . ?
C7 C8 1.401(2) . ?
C7 C16 1.425(2) . ?
C8 C9 1.383(3) . ?
C8 H8 0.93 . ?
C9 C10 1.383(2) . ?
C9 H9 0.93 . ?
C10 C11 1.399(2) . ?
C10 H10 0.93 . ?
C11 C16 1.422(2) . ?
C11 C12 1.430(2) . ?
C12 C13 1.350(2) . ?
C12 H12 0.93 . ?
C13 C14 1.441(2) . ?
C13 H13 0.93 . ?
C14 C15 1.4274(18) . ?
C15 C16 1.4287(19) . ?
C17 N1 1.2805(17) . ?
C17 H17 0.998(15) . ?
C18 C21 1.3751(19) . ?
C18 N1 1.4065(17) . ?
C18 C19 1.4253(19) . ?
C19 N2 1.3350(18) . ?
C19 N3 1.3527(17) . ?
C20 N4 1.3261(18) . ?
C20 N3 1.3366(19) . ?
C20 H20 0.93 . ?
C21 N4 1.3492(17) . ?
C21 H21 0.93 . ?
N2 H1N 0.880(17) . ?
N2 H2N 0.884(17) . ?
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
C2 C1 C14 119.74(11) . . ?
C2 C1 C17 118.20(12) . . ?
C14 C1 C17 122.06(11) . . ?
C3 C2 C1 121.35(13) . . ?
C3 C2 H2 119.3 . . ?
C1 C2 H2 119.3 . . ?
C2 C3 C4 120.79(12) . . ?
C2 C3 H3 119.6 . . ?
C4 C3 H3 119.6 . . ?
C3 C4 C15 119.14(12) . . ?
C3 C4 C5 122.02(13) . . ?
C15 C4 C5 118.84(13) . . ?
C6 C5 C4 121.78(13) . . ?
C6 C5 H5 119.1 . . ?
C4 C5 H5 119.1 . . ?
C5 C6 C7 121.21(13) . . ?
C5 C6 H6 119.4 . . ?
C7 C6 H6 119.4 . . ?
C8 C7 C16 119.01(14) . . ?
C8 C7 C6 122.51(13) . . ?
C16 C7 C6 118.47(13) . . ?
C9 C8 C7 120.90(14) . . ?
C9 C8 H8 119.6 . . ?
C7 C8 H8 119.6 . . ?
C10 C9 C8 120.52(15) . . ?
C10 C9 H9 119.7 . . ?
C8 C9 H9 119.7 . . ?
C9 C10 C11 120.92(15) . . ?
C9 C10 H10 119.5 . . ?
C11 C10 H10 119.5 . . ?
C10 C11 C16 119.18(13) . . ?
C10 C11 C12 122.65(14) . . ?
C16 C11 C12 118.17(13) . . ?
C13 C12 C11 122.02(13) . . ?
C13 C12 H12 119 . . ?
C11 C12 H12 119 . . ?
C12 C13 C14 121.72(13) . . ?
C12 C13 H13 119.1 . . ?
C14 C13 H13 119.1 . . ?
C1 C14 C15 118.70(12) . . ?
C1 C14 C13 123.75(12) . . ?
C15 C14 C13 117.52(12) . . ?
C4 C15 C14 120.27(12) . . ?
C4 C15 C16 119.22(12) . . ?
C14 C15 C16 120.51(12) . . ?
C11 C16 C7 119.47(13) . . ?
C11 C16 C15 120.06(12) . . ?
C7 C16 C15 120.47(13) . . ?
N1 C17 C1 120.81(12) . . ?
N1 C17 H17 121.1(8) . . ?
C1 C17 H17 118.1(8) . . ?
C21 C18 N1 124.67(12) . . ?
C21 C18 C19 117.14(11) . . ?
N1 C18 C19 118.07(11) . . ?
N2 C19 N3 118.80(12) . . ?
N2 C19 C18 121.49(12) . . ?
N3 C19 C18 119.69(11) . . ?
N4 C20 N3 129.15(13) . . ?
N4 C20 H20 115.4 . . ?
N3 C20 H20 115.4 . . ?
N4 C21 C18 123.57(12) . . ?
N4 C21 H21 118.2 . . ?
C18 C21 H21 118.2 . . ?
C17 N1 C18 118.39(11) . . ?
C19 N2 H1N 118.7(10) . . ?
C19 N2 H2N 119.1(10) . . ?
H1N N2 H2N 120.5(15) . . ?
C20 N3 C19 116.18(12) . . ?
C20 N4 C21 113.97(12) . . ?
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
C14 C1 C2 C3 -0.77(19) . . . . ?
C17 C1 C2 C3 179.92(12) . . . . ?
C1 C2 C3 C4 0.8(2) . . . . ?
C2 C3 C4 C15 -0.1(2) . . . . ?
C2 C3 C4 C5 179.85(13) . . . . ?
C3 C4 C5 C6 -178.75(14) . . . . ?
C15 C4 C5 C6 1.2(2) . . . . ?
C4 C5 C6 C7 0.1(2) . . . . ?
C5 C6 C7 C8 179.80(14) . . . . ?
C5 C6 C7 C16 -1.1(2) . . . . ?
C16 C7 C8 C9 0.4(2) . . . . ?
C6 C7 C8 C9 179.45(16) . . . . ?
C7 C8 C9 C10 -0.1(3) . . . . ?
C8 C9 C10 C11 -0.1(3) . . . . ?
C9 C10 C11 C16 -0.1(2) . . . . ?
C9 C10 C11 C12 179.62(16) . . . . ?
C10 C11 C12 C13 179.95(15) . . . . ?
C16 C11 C12 C13 -0.3(2) . . . . ?
C11 C12 C13 C14 0.1(2) . . . . ?
C2 C1 C14 C15 -0.05(18) . . . . ?
C17 C1 C14 C15 179.23(11) . . . . ?
C2 C1 C14 C13 -178.03(13) . . . . ?
C17 C1 C14 C13 1.2(2) . . . . ?
C12 C13 C14 C1 178.20(13) . . . . ?
C12 C13 C14 C15 0.2(2) . . . . ?
C3 C4 C15 C14 -0.75(19) . . . . ?
C5 C4 C15 C14 179.33(12) . . . . ?
C3 C4 C15 C16 178.50(12) . . . . ?
C5 C4 C15 C16 -1.42(19) . . . . ?
C1 C14 C15 C4 0.80(18) . . . . ?
C13 C14 C15 C4 178.90(12) . . . . ?
C1 C14 C15 C16 -178.44(11) . . . . ?
C13 C14 C15 C16 -0.33(18) . . . . ?
C10 C11 C16 C7 0.4(2) . . . . ?
C12 C11 C16 C7 -179.35(13) . . . . ?
C10 C11 C16 C15 179.92(13) . . . . ?
C12 C11 C16 C15 0.2(2) . . . . ?
C8 C7 C16 C11 -0.5(2) . . . . ?
C6 C7 C16 C11 -179.62(13) . . . . ?
C8 C7 C16 C15 179.93(13) . . . . ?
C6 C7 C16 C15 0.8(2) . . . . ?
C4 C15 C16 C11 -179.11(12) . . . . ?
C14 C15 C16 C11 0.1(2) . . . . ?
C4 C15 C16 C7 0.44(19) . . . . ?
C14 C15 C16 C7 179.68(12) . . . . ?
C2 C1 C17 N1 4.57(18) . . . . ?
C14 C1 C17 N1 -174.72(12) . . . . ?
C21 C18 C19 N2 175.96(13) . . . . ?
N1 C18 C19 N2 -0.3(2) . . . . ?
C21 C18 C19 N3 -5.8(2) . . . . ?
N1 C18 C19 N3 177.94(12) . . . . ?
N1 C18 C21 N4 -178.77(13) . . . . ?
C19 C18 C21 N4 5.2(2) . . . . ?
C1 C17 N1 C18 -175.92(11) . . . . ?
C21 C18 N1 C17 37.12(19) . . . . ?
C19 C18 N1 C17 -146.91(13) . . . . ?
N4 C20 N3 C19 2.6(3) . . . . ?
N2 C19 N3 C20 -179.47(13) . . . . ?
C18 C19 N3 C20 2.2(2) . . . . ?
N3 C20 N4 C21 -3.3(3) . . . . ?
C18 C21 N4 C20 -1.0(2) . . . . ?