# Electronic Supplementary Material (ESI) for RSC Advances
# This journal is © The Royal Society of Chemistry 2012


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#  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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data_bo1999
_database_code_depnum_ccdc_archive 'CCDC 908786'
#TrackingRef 'bo1999.cif'


_audit_creation_method           SHELXL-97
_chemical_name_systematic        
;
?
;
_chemical_name_common            ?
_chemical_melting_point          ?
_chemical_formula_moiety         ?
_chemical_formula_sum            'C23 H23 Br N2 O7'
_chemical_formula_weight         519.34

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'
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'
Br Br -0.2901 2.4595 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'

_symmetry_cell_setting           Triclinic
_symmetry_space_group_name_H-M   P-1

loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x, -y, -z'

_cell_length_a                   7.133(2)
_cell_length_b                   9.113(3)
_cell_length_c                   17.801(6)
_cell_angle_alpha                89.141(10)
_cell_angle_beta                 79.247(8)
_cell_angle_gamma                84.050(8)
_cell_volume                     1130.6(7)
_cell_formula_units_Z            2
_cell_measurement_temperature    153(2)
_cell_measurement_reflns_used    3707
_cell_measurement_theta_min      2.526
_cell_measurement_theta_max      29.127

_exptl_crystal_description       Block
_exptl_crystal_colour            Colorless
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.44
_exptl_crystal_size_min          0.30
_exptl_crystal_density_meas      ?
_exptl_crystal_density_diffrn    1.526
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             532
_exptl_absorpt_coefficient_mu    1.865
_exptl_absorpt_correction_type   Multi-scans
_exptl_absorpt_correction_T_min  0.4556
_exptl_absorpt_correction_T_max  0.6018
_exptl_absorpt_process_details   ?

_exptl_special_details           
;
?
;

_diffrn_ambient_temperature      153(2)
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_type           MoK\a
_diffrn_radiation_source         'Rotating Anode'
_diffrn_radiation_monochromator  graphite
_diffrn_measurement_device_type  AFC10/Saturn724+
_diffrn_measurement_method       'phi and omega scans'
_diffrn_detector_area_resol_mean 28.5714
_diffrn_standards_number         0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_decay_%        0
_diffrn_reflns_number            11844
_diffrn_reflns_av_R_equivalents  0.0300
_diffrn_reflns_av_sigmaI/netI    0.0487
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_theta_min         2.53
_diffrn_reflns_theta_max         28.00
_reflns_number_total             5357
_reflns_number_gt                4188
_reflns_threshold_expression     >2sigma(I)

_computing_data_collection       'CrystalClear (Rigaku Inc., 2008)'
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_molecular_graphics    ?
_computing_publication_material  ?

_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^)+(0.0463P)^2^+0.1160P] where P=(Fo^2^+2Fc^2^)/3'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_atom_sites_solution_hydrogens   geom
_refine_ls_hydrogen_treatment    mixed
_refine_ls_extinction_method     none
_refine_ls_extinction_coef       ?
_refine_ls_number_reflns         5357
_refine_ls_number_parameters     304
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0519
_refine_ls_R_factor_gt           0.0392
_refine_ls_wR_factor_ref         0.0965
_refine_ls_wR_factor_gt          0.0908
_refine_ls_goodness_of_fit_ref   0.999
_refine_ls_restrained_S_all      0.999
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000

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
Br1 Br 0.51757(3) 0.24079(3) 0.023618(14) 0.04054(10) Uani 1 1 d . . .
O1 O 0.3305(2) 0.34768(16) 0.36434(9) 0.0306(4) Uani 1 1 d . . .
O2 O 0.6146(2) 0.67842(19) 0.42263(9) 0.0364(4) Uani 1 1 d . . .
O3 O 0.5893(2) 0.79843(19) 0.31834(10) 0.0398(4) Uani 1 1 d . . .
O4 O 0.0080(2) 0.87279(19) 0.20485(10) 0.0419(4) Uani 1 1 d . . .
O5 O 0.3165(2) 0.80563(18) 0.14867(9) 0.0356(4) Uani 1 1 d . . .
O6 O 0.0317(2) 0.54415(19) 0.18494(9) 0.0377(4) Uani 1 1 d . . .
O7 O -0.0761(2) 0.52471(19) 0.31107(10) 0.0379(4) Uani 1 1 d . . .
N1 N 0.1258(3) 0.7718(2) 0.33585(11) 0.0278(4) Uani 1 1 d . . .
N2 N 0.5444(2) 0.7017(2) 0.36495(11) 0.0295(4) Uani 1 1 d . . .
C1 C 0.3724(3) 0.3250(2) 0.28642(13) 0.0267(5) Uani 1 1 d . . .
C2 C 0.3846(3) 0.1821(3) 0.25829(14) 0.0351(5) Uani 1 1 d . . .
H2 H 0.3637 0.1020 0.2926 0.042 Uiso 1 1 calc R . .
C3 C 0.4272(3) 0.1572(3) 0.18041(14) 0.0356(6) Uani 1 1 d . . .
H3 H 0.4361 0.0599 0.1607 0.043 Uiso 1 1 calc R . .
C4 C 0.4569(3) 0.2760(3) 0.13092(13) 0.0308(5) Uani 1 1 d . . .
C5 C 0.4442(3) 0.4186(2) 0.15839(13) 0.0263(5) Uani 1 1 d . . .
H5 H 0.4653 0.4984 0.1239 0.032 Uiso 1 1 calc R . .
C6 C 0.4001(3) 0.4444(2) 0.23735(12) 0.0237(4) Uani 1 1 d . . .
C7 C 0.3724(3) 0.6001(2) 0.26930(12) 0.0224(4) Uani 1 1 d . . .
H7 H 0.4740 0.6568 0.2394 0.027 Uiso 1 1 calc R . .
C8 C 0.3882(3) 0.6061(2) 0.35456(12) 0.0235(4) Uani 1 1 d . . .
C9 C 0.4409(3) 0.4555(2) 0.38830(13) 0.0283(5) Uani 1 1 d . . .
H9A H 0.5794 0.4250 0.3710 0.034 Uiso 1 1 calc R . .
H9B H 0.4151 0.4622 0.4448 0.034 Uiso 1 1 calc R . .
C10 C 0.1714(3) 0.6861(2) 0.26545(12) 0.0249(4) Uani 1 1 d . . .
C11 C 0.1905(3) 0.6814(2) 0.39652(12) 0.0245(4) Uani 1 1 d . . .
H11 H 0.1015 0.6034 0.4105 0.029 Uiso 1 1 calc R . .
C12 C 0.1898(3) 0.7708(2) 0.46763(12) 0.0252(5) Uani 1 1 d . . .
C13 C 0.1328(3) 0.7108(2) 0.53929(13) 0.0294(5) Uani 1 1 d . . .
H13 H 0.0896 0.6153 0.5435 0.035 Uiso 1 1 calc R . .
C14 C 0.1383(3) 0.7895(3) 0.60486(14) 0.0351(5) Uani 1 1 d . . .
H14 H 0.0979 0.7479 0.6537 0.042 Uiso 1 1 calc R . .
C15 C 0.2025(3) 0.9280(3) 0.59938(14) 0.0353(6) Uani 1 1 d . . .
H15 H 0.2116 0.9797 0.6443 0.042 Uiso 1 1 calc R . .
C16 C 0.2538(3) 0.9914(3) 0.52778(15) 0.0366(6) Uani 1 1 d . . .
H16 H 0.2935 1.0880 0.5238 0.044 Uiso 1 1 calc R . .
C17 C 0.2469(3) 0.9133(2) 0.46259(14) 0.0310(5) Uani 1 1 d . . .
H17 H 0.2812 0.9570 0.4138 0.037 Uiso 1 1 calc R . .
C18 C 0.1790(3) 0.7939(2) 0.19841(13) 0.0293(5) Uani 1 1 d . . .
C19 C -0.0279(4) 0.9704(3) 0.14214(16) 0.0504(7) Uani 1 1 d . . .
H19A H 0.0947 1.0024 0.1145 0.060 Uiso 1 1 calc R . .
H19B H -0.1127 1.0592 0.1627 0.060 Uiso 1 1 calc R . .
C20 C -0.1199(5) 0.8915(4) 0.08889(18) 0.0664(9) Uani 1 1 d . . .
H20A H -0.0299 0.8100 0.0644 0.080 Uiso 1 1 calc R . .
H20B H -0.1555 0.9600 0.0497 0.080 Uiso 1 1 calc R . .
H20C H -0.2352 0.8523 0.1174 0.080 Uiso 1 1 calc R . .
C21 C 0.0260(3) 0.5768(2) 0.25782(13) 0.0294(5) Uani 1 1 d . . .
C22 C -0.0668(4) 0.4142(4) 0.17155(17) 0.0551(8) Uani 1 1 d . . .
H22A H -0.0067 0.3247 0.1934 0.066 Uiso 1 1 calc R . .
H22B H -0.2036 0.4293 0.1964 0.066 Uiso 1 1 calc R . .
C23 C -0.0502(4) 0.3967(4) 0.09013(18) 0.0651(9) Uani 1 1 d . . .
H23A H -0.1148 0.4840 0.0694 0.078 Uiso 1 1 calc R . .
H23B H -0.1102 0.3090 0.0798 0.078 Uiso 1 1 calc R . .
H23C H 0.0857 0.3852 0.0659 0.078 Uiso 1 1 calc R . .
H1N H 0.014(3) 0.805(3) 0.3471(13) 0.029(7) Uiso 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
Br1 0.04421(15) 0.04470(17) 0.03254(16) -0.01715(12) -0.00829(11) 0.00079(11)
O1 0.0376(8) 0.0257(8) 0.0273(9) -0.0014(7) -0.0019(7) -0.0047(7)
O2 0.0324(8) 0.0456(10) 0.0326(10) -0.0136(8) -0.0105(7) -0.0009(7)
O3 0.0441(10) 0.0366(10) 0.0396(11) -0.0043(8) -0.0029(8) -0.0168(8)
O4 0.0467(10) 0.0411(10) 0.0358(10) 0.0041(8) -0.0124(8) 0.0141(8)
O5 0.0457(10) 0.0329(9) 0.0268(9) 0.0009(7) -0.0031(7) -0.0041(7)
O6 0.0293(8) 0.0511(11) 0.0342(9) -0.0127(8) -0.0060(7) -0.0090(7)
O7 0.0306(8) 0.0422(10) 0.0386(10) -0.0049(8) 0.0021(7) -0.0082(7)
N1 0.0306(10) 0.0266(10) 0.0235(10) -0.0050(8) -0.0036(8) 0.0072(8)
N2 0.0262(9) 0.0330(11) 0.0277(11) -0.0122(9) -0.0010(8) -0.0015(8)
C1 0.0265(10) 0.0246(11) 0.0276(12) -0.0033(9) -0.0023(8) -0.0012(8)
C2 0.0402(13) 0.0246(12) 0.0395(15) -0.0013(10) -0.0044(10) -0.0040(10)
C3 0.0372(12) 0.0261(12) 0.0434(15) -0.0125(11) -0.0070(10) -0.0019(10)
C4 0.0266(10) 0.0336(13) 0.0327(13) -0.0106(10) -0.0058(9) -0.0024(9)
C5 0.0239(10) 0.0260(11) 0.0288(12) -0.0041(9) -0.0044(8) -0.0014(8)
C6 0.0203(9) 0.0225(11) 0.0283(12) -0.0043(9) -0.0044(8) -0.0014(8)
C7 0.0227(9) 0.0222(10) 0.0215(11) -0.0017(8) -0.0021(8) -0.0022(8)
C8 0.0230(9) 0.0234(11) 0.0243(11) -0.0035(9) -0.0043(8) -0.0024(8)
C9 0.0313(11) 0.0280(12) 0.0250(12) -0.0043(9) -0.0056(9) 0.0015(9)
C10 0.0264(10) 0.0248(11) 0.0225(11) -0.0043(9) -0.0035(8) 0.0007(8)
C11 0.0240(10) 0.0233(11) 0.0249(11) -0.0032(9) -0.0027(8) 0.0005(8)
C12 0.0224(10) 0.0271(11) 0.0244(11) -0.0057(9) -0.0010(8) -0.0005(8)
C13 0.0305(11) 0.0271(12) 0.0284(12) -0.0038(10) -0.0015(9) 0.0008(9)
C14 0.0418(13) 0.0355(13) 0.0242(12) -0.0044(10) -0.0035(10) 0.0090(10)
C15 0.0329(12) 0.0392(14) 0.0329(14) -0.0182(11) -0.0094(10) 0.0094(10)
C16 0.0300(11) 0.0315(13) 0.0466(16) -0.0147(11) -0.0022(10) -0.0018(10)
C17 0.0331(11) 0.0278(12) 0.0294(12) -0.0055(10) 0.0019(9) -0.0039(9)
C18 0.0384(12) 0.0238(11) 0.0263(12) -0.0062(9) -0.0086(9) -0.0008(9)
C19 0.0623(18) 0.0440(16) 0.0445(17) 0.0099(13) -0.0202(14) 0.0131(13)
C20 0.076(2) 0.072(2) 0.056(2) 0.0032(17) -0.0321(17) 0.0086(18)
C21 0.0230(10) 0.0304(12) 0.0336(13) -0.0070(10) -0.0050(9) 0.0045(9)
C22 0.0397(14) 0.079(2) 0.0507(18) -0.0164(16) -0.0047(12) -0.0284(15)
C23 0.0463(16) 0.090(3) 0.062(2) -0.0281(19) -0.0080(14) -0.0208(16)

_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
Br1 C4 1.902(2) . ?
O1 C1 1.377(3) . ?
O1 C9 1.437(3) . ?
O2 N2 1.230(2) . ?
O3 N2 1.227(2) . ?
O4 C18 1.337(3) . ?
O4 C19 1.460(3) . ?
O5 C18 1.205(3) . ?
O6 C21 1.327(3) . ?
O6 C22 1.482(3) . ?
O7 C21 1.206(3) . ?
N1 C10 1.453(3) . ?
N1 C11 1.462(3) . ?
N1 H1N 0.81(2) . ?
N2 C8 1.522(3) . ?
C1 C2 1.390(3) . ?
C1 C6 1.392(3) . ?
C2 C3 1.380(3) . ?
C2 H2 0.9500 . ?
C3 C4 1.394(3) . ?
C3 H3 0.9500 . ?
C4 C5 1.384(3) . ?
C5 C6 1.400(3) . ?
C5 H5 0.9500 . ?
C6 C7 1.517(3) . ?
C7 C8 1.545(3) . ?
C7 C10 1.573(3) . ?
C7 H7 1.0000 . ?
C8 C9 1.529(3) . ?
C8 C11 1.562(3) . ?
C9 H9A 0.9900 . ?
C9 H9B 0.9900 . ?
C10 C18 1.531(3) . ?
C10 C21 1.535(3) . ?
C11 C12 1.514(3) . ?
C11 H11 1.0000 . ?
C12 C13 1.387(3) . ?
C12 C17 1.398(3) . ?
C13 C14 1.388(3) . ?
C13 H13 0.9500 . ?
C14 C15 1.383(3) . ?
C14 H14 0.9500 . ?
C15 C16 1.393(4) . ?
C15 H15 0.9500 . ?
C16 C17 1.382(3) . ?
C16 H16 0.9500 . ?
C17 H17 0.9500 . ?
C19 C20 1.482(4) . ?
C19 H19A 0.9900 . ?
C19 H19B 0.9900 . ?
C20 H20A 0.9800 . ?
C20 H20B 0.9800 . ?
C20 H20C 0.9800 . ?
C22 C23 1.442(4) . ?
C22 H22A 0.9900 . ?
C22 H22B 0.9900 . ?
C23 H23A 0.9800 . ?
C23 H23B 0.9800 . ?
C23 H23C 0.9800 . ?

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
C1 O1 C9 112.20(15) . . ?
C18 O4 C19 118.4(2) . . ?
C21 O6 C22 115.32(19) . . ?
C10 N1 C11 108.27(17) . . ?
C10 N1 H1N 114.1(17) . . ?
C11 N1 H1N 112.9(17) . . ?
O3 N2 O2 123.80(19) . . ?
O3 N2 C8 119.96(18) . . ?
O2 N2 C8 116.21(19) . . ?
O1 C1 C2 118.9(2) . . ?
O1 C1 C6 119.87(18) . . ?
C2 C1 C6 121.2(2) . . ?
C3 C2 C1 119.7(2) . . ?
C3 C2 H2 120.1 . . ?
C1 C2 H2 120.1 . . ?
C2 C3 C4 119.4(2) . . ?
C2 C3 H3 120.3 . . ?
C4 C3 H3 120.3 . . ?
C5 C4 C3 121.3(2) . . ?
C5 C4 Br1 119.50(18) . . ?
C3 C4 Br1 119.24(17) . . ?
C4 C5 C6 119.5(2) . . ?
C4 C5 H5 120.3 . . ?
C6 C5 H5 120.3 . . ?
C1 C6 C5 118.91(19) . . ?
C1 C6 C7 120.11(19) . . ?
C5 C6 C7 120.90(19) . . ?
C6 C7 C8 113.17(17) . . ?
C6 C7 C10 114.36(17) . . ?
C8 C7 C10 104.59(16) . . ?
C6 C7 H7 108.2 . . ?
C8 C7 H7 108.2 . . ?
C10 C7 H7 108.2 . . ?
N2 C8 C9 106.19(17) . . ?
N2 C8 C7 110.13(16) . . ?
C9 C8 C7 113.82(17) . . ?
N2 C8 C11 108.75(16) . . ?
C9 C8 C11 112.43(17) . . ?
C7 C8 C11 105.48(16) . . ?
O1 C9 C8 110.00(17) . . ?
O1 C9 H9A 109.7 . . ?
C8 C9 H9A 109.7 . . ?
O1 C9 H9B 109.7 . . ?
C8 C9 H9B 109.7 . . ?
H9A C9 H9B 108.2 . . ?
N1 C10 C18 107.93(17) . . ?
N1 C10 C21 114.26(17) . . ?
C18 C10 C21 108.33(18) . . ?
N1 C10 C7 103.45(16) . . ?
C18 C10 C7 112.84(17) . . ?
C21 C10 C7 110.06(17) . . ?
N1 C11 C12 112.29(17) . . ?
N1 C11 C8 101.97(16) . . ?
C12 C11 C8 117.16(17) . . ?
N1 C11 H11 108.3 . . ?
C12 C11 H11 108.3 . . ?
C8 C11 H11 108.3 . . ?
C13 C12 C17 119.0(2) . . ?
C13 C12 C11 119.9(2) . . ?
C17 C12 C11 121.2(2) . . ?
C12 C13 C14 120.4(2) . . ?
C12 C13 H13 119.8 . . ?
C14 C13 H13 119.8 . . ?
C15 C14 C13 120.3(2) . . ?
C15 C14 H14 119.8 . . ?
C13 C14 H14 119.8 . . ?
C14 C15 C16 119.8(2) . . ?
C14 C15 H15 120.1 . . ?
C16 C15 H15 120.1 . . ?
C17 C16 C15 119.8(2) . . ?
C17 C16 H16 120.1 . . ?
C15 C16 H16 120.1 . . ?
C16 C17 C12 120.7(2) . . ?
C16 C17 H17 119.6 . . ?
C12 C17 H17 119.6 . . ?
O5 C18 O4 126.1(2) . . ?
O5 C18 C10 125.5(2) . . ?
O4 C18 C10 108.35(19) . . ?
O4 C19 C20 109.6(2) . . ?
O4 C19 H19A 109.7 . . ?
C20 C19 H19A 109.7 . . ?
O4 C19 H19B 109.7 . . ?
C20 C19 H19B 109.7 . . ?
H19A C19 H19B 108.2 . . ?
C19 C20 H20A 109.5 . . ?
C19 C20 H20B 109.5 . . ?
H20A C20 H20B 109.5 . . ?
C19 C20 H20C 109.5 . . ?
H20A C20 H20C 109.5 . . ?
H20B C20 H20C 109.5 . . ?
O7 C21 O6 124.6(2) . . ?
O7 C21 C10 124.4(2) . . ?
O6 C21 C10 110.92(19) . . ?
C23 C22 O6 108.0(2) . . ?
C23 C22 H22A 110.1 . . ?
O6 C22 H22A 110.1 . . ?
C23 C22 H22B 110.1 . . ?
O6 C22 H22B 110.1 . . ?
H22A C22 H22B 108.4 . . ?
C22 C23 H23A 109.5 . . ?
C22 C23 H23B 109.5 . . ?
H23A C23 H23B 109.5 . . ?
C22 C23 H23C 109.5 . . ?
H23A C23 H23C 109.5 . . ?
H23B C23 H23C 109.5 . . ?

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
C9 O1 C1 C2 139.9(2) . . . . ?
C9 O1 C1 C6 -40.6(3) . . . . ?
O1 C1 C2 C3 -179.75(19) . . . . ?
C6 C1 C2 C3 0.8(3) . . . . ?
C1 C2 C3 C4 -0.2(3) . . . . ?
C2 C3 C4 C5 -0.1(3) . . . . ?
C2 C3 C4 Br1 179.49(17) . . . . ?
C3 C4 C5 C6 -0.2(3) . . . . ?
Br1 C4 C5 C6 -179.83(14) . . . . ?
O1 C1 C6 C5 179.42(17) . . . . ?
C2 C1 C6 C5 -1.1(3) . . . . ?
O1 C1 C6 C7 -3.7(3) . . . . ?
C2 C1 C6 C7 175.74(19) . . . . ?
C4 C5 C6 C1 0.8(3) . . . . ?
C4 C5 C6 C7 -176.01(19) . . . . ?
C1 C6 C7 C8 21.3(3) . . . . ?
C5 C6 C7 C8 -161.88(17) . . . . ?
C1 C6 C7 C10 -98.3(2) . . . . ?
C5 C6 C7 C10 78.5(2) . . . . ?
O3 N2 C8 C9 148.76(19) . . . . ?
O2 N2 C8 C9 -33.4(2) . . . . ?
O3 N2 C8 C7 25.1(2) . . . . ?
O2 N2 C8 C7 -157.06(17) . . . . ?
O3 N2 C8 C11 -90.0(2) . . . . ?
O2 N2 C8 C11 87.8(2) . . . . ?
C6 C7 C8 N2 122.73(18) . . . . ?
C10 C7 C8 N2 -112.17(17) . . . . ?
C6 C7 C8 C9 3.6(2) . . . . ?
C10 C7 C8 C9 128.73(17) . . . . ?
C6 C7 C8 C11 -120.08(18) . . . . ?
C10 C7 C8 C11 5.0(2) . . . . ?
C1 O1 C9 C8 64.2(2) . . . . ?
N2 C8 C9 O1 -165.59(15) . . . . ?
C7 C8 C9 O1 -44.3(2) . . . . ?
C11 C8 C9 O1 75.6(2) . . . . ?
C11 N1 C10 C18 -158.03(17) . . . . ?
C11 N1 C10 C21 81.4(2) . . . . ?
C11 N1 C10 C7 -38.2(2) . . . . ?
C6 C7 C10 N1 143.16(18) . . . . ?
C8 C7 C10 N1 18.8(2) . . . . ?
C6 C7 C10 C18 -100.5(2) . . . . ?
C8 C7 C10 C18 135.20(17) . . . . ?
C6 C7 C10 C21 20.7(2) . . . . ?
C8 C7 C10 C21 -103.66(19) . . . . ?
C10 N1 C11 C12 167.41(16) . . . . ?
C10 N1 C11 C8 41.2(2) . . . . ?
N2 C8 C11 N1 91.29(19) . . . . ?
C9 C8 C11 N1 -151.41(17) . . . . ?
C7 C8 C11 N1 -26.83(19) . . . . ?
N2 C8 C11 C12 -31.7(3) . . . . ?
C9 C8 C11 C12 85.6(2) . . . . ?
C7 C8 C11 C12 -149.82(18) . . . . ?
N1 C11 C12 C13 141.3(2) . . . . ?
C8 C11 C12 C13 -101.2(2) . . . . ?
N1 C11 C12 C17 -39.0(3) . . . . ?
C8 C11 C12 C17 78.5(3) . . . . ?
C17 C12 C13 C14 -2.1(3) . . . . ?
C11 C12 C13 C14 177.61(19) . . . . ?
C12 C13 C14 C15 -0.6(3) . . . . ?
C13 C14 C15 C16 2.8(3) . . . . ?
C14 C15 C16 C17 -2.3(3) . . . . ?
C15 C16 C17 C12 -0.4(3) . . . . ?
C13 C12 C17 C16 2.6(3) . . . . ?
C11 C12 C17 C16 -177.1(2) . . . . ?
C19 O4 C18 O5 8.0(4) . . . . ?
C19 O4 C18 C10 -172.3(2) . . . . ?
N1 C10 C18 O5 120.2(2) . . . . ?
C21 C10 C18 O5 -115.6(2) . . . . ?
C7 C10 C18 O5 6.5(3) . . . . ?
N1 C10 C18 O4 -59.5(2) . . . . ?
C21 C10 C18 O4 64.7(2) . . . . ?
C7 C10 C18 O4 -173.21(17) . . . . ?
C18 O4 C19 C20 93.2(3) . . . . ?
C22 O6 C21 O7 -12.3(3) . . . . ?
C22 O6 C21 C10 165.9(2) . . . . ?
N1 C10 C21 O7 -25.2(3) . . . . ?
C18 C10 C21 O7 -145.5(2) . . . . ?
C7 C10 C21 O7 90.7(2) . . . . ?
N1 C10 C21 O6 156.62(18) . . . . ?
C18 C10 C21 O6 36.3(2) . . . . ?
C7 C10 C21 O6 -87.5(2) . . . . ?
C21 O6 C22 C23 178.8(2) . . . . ?

_diffrn_measured_fraction_theta_max 0.981
_diffrn_reflns_theta_full        28.00
_diffrn_measured_fraction_theta_full 0.981
_refine_diff_density_max         0.739
_refine_diff_density_min         -0.556
_refine_diff_density_rms         0.067