# Electronic Supplementary Material (ESI) for ChemComm.
# This journal is © The Royal Society of Chemistry 2017

####################################################################### 
# 
# This file contains crystal structure data downloaded from the 
# Cambridge Structural Database (CSD) hosted by the Cambridge 
# Crystallographic Data Centre (CCDC).
# 
# Full information about CCDC data access policies and citation 
# guidelines are available at http://www.ccdc.cam.ac.uk/access/V1 
# 
# Audit and citation data items may have been added by the CCDC. 
# Please retain this information to preserve the provenance of 
# this file and to allow appropriate attribution of the data. 
# 
#######################################################################

data_mm524
_database_code_depnum_ccdc_archive 'CCDC 1553992'
_audit_update_record             
;
2017-06-03 deposited with the CCDC.
2017-07-07 downloaded from the CCDC.
;

_audit_creation_method           SHELXL-2014/7
_shelx_SHELXL_version_number     2014/7
_chemical_name_systematic        ?
_chemical_name_common            ?
_chemical_melting_point          ?
_chemical_formula_moiety         ?
_chemical_formula_sum            'C34 H63 Cl7 N16 Ni4 O8.50'
_chemical_formula_weight         1314.99

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'
Cl Cl 0.1484 0.1585 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
Ni Ni 0.3393 1.1124 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'

_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_H-M_alt        'C 2/c'
_space_group_name_Hall           '-C 2yc'

_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. 
;

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'

_cell_length_a                   11.7191(4)
_cell_length_b                   23.4564(7)
_cell_length_c                   21.6135(7)
_cell_angle_alpha                90
_cell_angle_beta                 91.4944(14)
_cell_angle_gamma                90
_cell_volume                     5939.3(3)
_cell_formula_units_Z            4
_cell_measurement_temperature    200(2)
_cell_measurement_reflns_used    9922
_cell_measurement_theta_min      2.56
_cell_measurement_theta_max      28.30

_exptl_crystal_description       block
_exptl_crystal_colour            yellow
_exptl_crystal_density_meas      n/a
_exptl_crystal_density_method    ?
_exptl_crystal_density_diffrn    1.471
_exptl_crystal_F_000             2712
_exptl_transmission_factor_min   ?
_exptl_transmission_factor_max   ?
_exptl_crystal_size_max          0.150
_exptl_crystal_size_mid          0.120
_exptl_crystal_size_min          0.100
_exptl_absorpt_coefficient_mu    1.619
_shelx_estimated_absorpt_T_min   0.793
_shelx_estimated_absorpt_T_max   0.855
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_correction_T_min  0.5723
_exptl_absorpt_correction_T_max  0.7457
_exptl_absorpt_process_details   'SADABS, Bruker (2003)'
_exptl_absorpt_special_details   ?
_diffrn_ambient_temperature      200(2)
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_type           MoK\a
_diffrn_source                   ?
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       'φ and ω scans'
_diffrn_detector_area_resol_mean ?
_diffrn_reflns_number            26465
_diffrn_reflns_av_unetI/netI     0.0205
_diffrn_reflns_av_R_equivalents  0.0210
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_k_min       -30
_diffrn_reflns_limit_k_max       31
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_theta_min         1.736
_diffrn_reflns_theta_max         28.306
_diffrn_reflns_theta_full        25.242
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measured_fraction_theta_full 0.989
_diffrn_reflns_Laue_measured_fraction_max 0.990
_diffrn_reflns_Laue_measured_fraction_full 0.989
_diffrn_reflns_point_group_measured_fraction_max 0.990
_diffrn_reflns_point_group_measured_fraction_full 0.989
_reflns_number_total             7335
_reflns_number_gt                5410
_reflns_threshold_expression     'I > 2σ(I)'
_reflns_Friedel_coverage         0.000
_reflns_Friedel_fraction_max     .
_reflns_Friedel_fraction_full    .

_reflns_special_details          
; 
 Reflections were merged by SHELXL according to the crystal 
 class for the calculation of statistics and refinement. 
  
 _reflns_Friedel_fraction is defined as the number of unique 
 Friedel pairs measured divided by the number that would be 
 possible theoretically, ignoring centric projections and 
 systematic absences. 
;

_computing_data_collection       'APEX II, Bruker (2009)'
_computing_cell_refinement       'APEX II, Bruker (2009)'
_computing_data_reduction        'XPREP, Bruker (2009)'
_computing_structure_solution    'SHELXS-03 (Sheldrick, 2003)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_molecular_graphics    'SHELXTL, Bruker (2004)'
_computing_publication_material  'SHELXTL, Bruker (2004)'
_refine_special_details          ?
_refine_ls_structure_factor_coef Fsqd
_refine_ls_matrix_type           full
_refine_ls_weighting_scheme      calc
_refine_ls_weighting_details     
'w=1/[σ²(Fo²)+(0.0670P)²+6.2894P] where P=(Fo²+2Fc²)/3'
_atom_sites_solution_primary     ?
_atom_sites_solution_secondary   ?
_atom_sites_solution_hydrogens   mixed
_refine_ls_hydrogen_treatment    constr
_refine_ls_extinction_method     none
_refine_ls_extinction_coef       .
_refine_ls_number_reflns         7335
_refine_ls_number_parameters     318
_refine_ls_number_restraints     36
_refine_ls_R_factor_all          0.0586
_refine_ls_R_factor_gt           0.0406
_refine_ls_wR_factor_ref         0.1266
_refine_ls_wR_factor_gt          0.1118
_refine_ls_goodness_of_fit_ref   1.021
_refine_ls_restrained_S_all      1.034
_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_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
Ni1 Ni 0.62912(2) 0.11905(2) 0.06051(2) 0.02912(10) Uani 1 1 d . . . . .
Ni2 Ni 0.38047(2) 0.12221(2) -0.05836(2) 0.02939(10) Uani 1 1 d . . . . .
Cl1 Cl 0.50911(5) 0.18269(2) 0.00071(2) 0.03741(14) Uani 1 1 d . . . . .
Cl2 Cl 0.73781(5) 0.18696(3) 0.11469(3) 0.04618(16) Uani 1 1 d . . . . .
Cl3 Cl 0.27562(5) 0.19340(3) -0.10781(3) 0.04587(16) Uani 1 1 d . . . . .
Cl4 Cl 0.5000 0.39615(5) 0.2500 0.0563(3) Uani 1 2 d S T P . .
O1 O 0.74795(15) 0.10920(7) -0.00726(8) 0.0401(4) Uani 1 1 d . . . . .
O2 O 0.51132(14) 0.11187(7) 0.13005(8) 0.0389(4) Uani 1 1 d . . . . .
O3 O 0.49402(14) 0.11174(7) -0.12922(8) 0.0387(4) Uani 1 1 d . . . . .
O4 O 0.26417(15) 0.11242(7) 0.01151(8) 0.0421(4) Uani 1 1 d . . . . .
O5 O 0.0000 -0.1037(4) -0.2500 0.081(2) Uani 0.5 2 d S T P . .
H5B H -0.0728 -0.1108 -0.2320 0.121 Uiso 0.25 1 d R U P . .
H5C H 0.0258 -0.0636 -0.2388 0.121 Uiso 0.25 1 d R U P . .
N1 N 0.54664(14) 0.05008(8) 0.02166(8) 0.0270(4) Uani 1 1 d . . . . .
N2 N 0.45784(14) 0.05135(8) -0.02110(8) 0.0279(4) Uani 1 1 d . . . . .
N3 N 0.28679(14) 0.05368(8) -0.10339(8) 0.0300(4) Uani 1 1 d . . . . .
N4 N 0.28398(15) -0.04783(8) -0.10481(8) 0.0303(4) Uani 1 1 d . . . . .
N5 N 0.88683(18) 0.13946(9) -0.06899(10) 0.0399(5) Uani 1 1 d . . . . .
N6 N 0.3811(2) 0.14946(16) 0.19242(11) 0.0792(10) Uani 1 1 d . U . . .
N7 N 0.6350(2) 0.13938(13) -0.19097(10) 0.0537(6) Uani 1 1 d . . . . .
N8 N 0.11612(18) 0.13838(10) 0.06922(10) 0.0438(5) Uani 1 1 d . . . . .
C1 C 0.41842(18) 0.00114(8) -0.03905(10) 0.0263(4) Uani 1 1 d . . . . .
C2 C 0.32358(18) 0.00230(9) -0.08547(10) 0.0280(4) Uani 1 1 d . . . . .
C3 C 0.20109(18) 0.05459(11) -0.14556(10) 0.0361(5) Uani 1 1 d . . . . .
H3A H 0.1717 0.0901 -0.1598 0.043 Uiso 1 1 calc R U . . .
C4 C 0.1548(2) 0.00453(10) -0.16874(12) 0.0402(6) Uani 1 1 d . . . . .
H4A H 0.0945 0.0053 -0.1990 0.048 Uiso 1 1 calc R U . . .
C5 C 0.19816(19) -0.04672(11) -0.14693(11) 0.0378(5) Uani 1 1 d . . . . .
H5A H 0.1667 -0.0815 -0.1620 0.045 Uiso 1 1 calc R U . . .
C6 C 0.80190(19) 0.14802(10) -0.03175(10) 0.0352(5) Uani 1 1 d . . . . .
H6A H 0.7807 0.1862 -0.0231 0.042 Uiso 1 1 calc R U . . .
C7 C 0.9239(3) 0.08216(13) -0.08282(18) 0.0743(11) Uani 1 1 d . . . . .
H7A H 0.9877 0.0837 -0.1112 0.111 Uiso 1 1 calc R U . . .
H7B H 0.9485 0.0631 -0.0444 0.111 Uiso 1 1 calc R U . . .
H7C H 0.8605 0.0609 -0.1022 0.111 Uiso 1 1 calc R U . . .
C8 C 0.9531(3) 0.18573(13) -0.09514(15) 0.0572(7) Uani 1 1 d . . . . .
H8A H 0.9833 0.1737 -0.1349 0.086 Uiso 1 1 calc R U . . .
H8B H 1.0165 0.1955 -0.0666 0.086 Uiso 1 1 calc R U . . .
H8C H 0.9040 0.2192 -0.1015 0.086 Uiso 1 1 calc R U . . .
C9 C 0.4596(3) 0.15264(13) 0.14987(12) 0.0557(8) Uani 1 1 d . U . . .
H9A H 0.4769 0.1892 0.1337 0.067 Uiso 1 1 calc R U . . .
C10 C 0.3487(3) 0.0959(2) 0.21784(18) 0.0962(14) Uani 1 1 d . U . . .
H10A H 0.2897 0.1019 0.2485 0.144 Uiso 1 1 calc R U . . .
H10B H 0.3185 0.0712 0.1847 0.144 Uiso 1 1 calc R U . . .
H10C H 0.4154 0.0777 0.2378 0.144 Uiso 1 1 calc R U . . .
C11 C 0.3260(5) 0.2001(3) 0.2156(2) 0.161(3) Uani 1 1 d . U . . .
H11A H 0.2706 0.1892 0.2467 0.242 Uiso 1 1 calc R U . . .
H11B H 0.3835 0.2254 0.2344 0.242 Uiso 1 1 calc R U . . .
H11C H 0.2865 0.2199 0.1813 0.242 Uiso 1 1 calc R U . . .
C12 C 0.5566(2) 0.14889(12) -0.14938(11) 0.0444(6) Uani 1 1 d . . . . .
H12A H 0.5482 0.1866 -0.1342 0.053 Uiso 1 1 calc R U . . .
C13 C 0.6538(3) 0.08396(17) -0.21584(18) 0.0786(11) Uani 1 1 d . . . . .
H13A H 0.7151 0.0857 -0.2458 0.118 Uiso 1 1 calc R U . . .
H13B H 0.6756 0.0577 -0.1823 0.118 Uiso 1 1 calc R U . . .
H13C H 0.5836 0.0703 -0.2366 0.118 Uiso 1 1 calc R U . . .
C14 C 0.7025(4) 0.18539(19) -0.21634(17) 0.0917(14) Uani 1 1 d . . . . .
H14A H 0.7556 0.1698 -0.2463 0.137 Uiso 1 1 calc R U . . .
H14B H 0.6518 0.2130 -0.2371 0.137 Uiso 1 1 calc R U . . .
H14C H 0.7457 0.2043 -0.1828 0.137 Uiso 1 1 calc R U . . .
C15 C 0.20354(19) 0.14973(10) 0.03369(11) 0.0359(5) Uani 1 1 d . . . . .
H15A H 0.2203 0.1885 0.0249 0.043 Uiso 1 1 calc R U . . .
C16 C 0.0434(3) 0.18327(15) 0.09313(18) 0.0701(9) Uani 1 1 d . . . . .
H16A H -0.0161 0.1663 0.1183 0.105 Uiso 1 1 calc R U . . .
H16B H 0.0895 0.2095 0.1187 0.105 Uiso 1 1 calc R U . . .
H16C H 0.0078 0.2043 0.0585 0.105 Uiso 1 1 calc R U . . .
C17 C 0.0869(4) 0.08039(14) 0.0834(2) 0.0850(13) Uani 1 1 d . . . . .
H17A H 0.0205 0.0799 0.1101 0.128 Uiso 1 1 calc R U . . .
H17B H 0.0686 0.0598 0.0450 0.128 Uiso 1 1 calc R U . . .
H17C H 0.1516 0.0619 0.1049 0.128 Uiso 1 1 calc R U . . .


_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
Ni1 N1 2.0530(17) . ?
Ni1 O1 2.0602(16) . ?
Ni1 O2 2.0740(16) . ?
Ni1 N4 2.1667(19) 5_655 ?
Ni1 Cl2 2.3352(6) . ?
Ni1 Cl1 2.4044(6) . ?
Ni2 N2 2.0481(17) . ?
Ni2 O3 2.0695(16) . ?
Ni2 O4 2.0731(16) . ?
Ni2 N3 2.1635(19) . ?
Ni2 Cl3 2.3179(6) . ?
Ni2 Cl1 2.4115(6) . ?
O1 C6 1.236(3) . ?
O2 C9 1.216(3) . ?
O3 C12 1.226(3) . ?
O4 C15 1.232(3) . ?
N1 C1 1.321(3) 5_655 ?
N1 N2 1.374(2) . ?
N2 C1 1.320(3) . ?
N3 C2 1.334(3) . ?
N3 C3 1.339(3) . ?
N4 C2 1.328(3) . ?
N4 C5 1.339(3) . ?
N4 Ni1 2.1667(19) 5_655 ?
N5 C6 1.312(3) . ?
N5 C7 1.446(3) . ?
N5 C8 1.457(3) . ?
N6 C9 1.320(3) . ?
N6 C10 1.428(6) . ?
N6 C11 1.448(5) . ?
N7 C12 1.321(3) . ?
N7 C13 1.426(4) . ?
N7 C14 1.454(4) . ?
N8 C15 1.323(3) . ?
N8 C17 1.438(4) . ?
N8 C16 1.458(4) . ?
C1 N1 1.321(3) 5_655 ?
C1 C2 1.478(3) . ?
C3 C4 1.382(3) . ?
C4 C5 1.383(3) . ?

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
N1 Ni1 O1 86.59(7) . . ?
N1 Ni1 O2 85.25(7) . . ?
O1 Ni1 O2 168.85(7) . . ?
N1 Ni1 N4 77.52(7) . 5_655 ?
O1 Ni1 N4 84.78(7) . 5_655 ?
O2 Ni1 N4 86.05(7) . 5_655 ?
N1 Ni1 Cl2 170.93(5) . . ?
O1 Ni1 Cl2 93.62(5) . . ?
O2 Ni1 Cl2 93.25(5) . . ?
N4 Ni1 Cl2 93.46(5) 5_655 . ?
N1 Ni1 Cl1 90.39(5) . . ?
O1 Ni1 Cl1 94.83(5) . . ?
O2 Ni1 Cl1 92.80(5) . . ?
N4 Ni1 Cl1 167.91(5) 5_655 . ?
Cl2 Ni1 Cl1 98.62(2) . . ?
N2 Ni2 O3 84.72(7) . . ?
N2 Ni2 O4 85.21(7) . . ?
O3 Ni2 O4 166.79(7) . . ?
N2 Ni2 N3 77.77(7) . . ?
O3 Ni2 N3 84.69(7) . . ?
O4 Ni2 N3 84.83(7) . . ?
N2 Ni2 Cl3 171.85(5) . . ?
O3 Ni2 Cl3 95.02(5) . . ?
O4 Ni2 Cl3 93.73(5) . . ?
N3 Ni2 Cl3 94.08(5) . . ?
N2 Ni2 Cl1 90.28(5) . . ?
O3 Ni2 Cl1 93.23(5) . . ?
O4 Ni2 Cl1 95.35(5) . . ?
N3 Ni2 Cl1 168.01(5) . . ?
Cl3 Ni2 Cl1 97.86(2) . . ?
Ni1 Cl1 Ni2 105.56(2) . . ?
C6 O1 Ni1 125.78(15) . . ?
C9 O2 Ni1 122.59(18) . . ?
C12 O3 Ni2 125.50(17) . . ?
C15 O4 Ni2 126.97(16) . . ?
C1 N1 N2 115.78(16) 5_655 . ?
C1 N1 Ni1 117.47(14) 5_655 . ?
N2 N1 Ni1 126.75(12) . . ?
C1 N2 N1 115.56(16) . . ?
C1 N2 Ni2 117.43(14) . . ?
N1 N2 Ni2 127.00(12) . . ?
C2 N3 C3 116.3(2) . . ?
C2 N3 Ni2 112.60(14) . . ?
C3 N3 Ni2 131.09(16) . . ?
C2 N4 C5 116.6(2) . . ?
C2 N4 Ni1 112.79(14) . 5_655 ?
C5 N4 Ni1 130.65(16) . 5_655 ?
C6 N5 C7 120.4(2) . . ?
C6 N5 C8 123.0(2) . . ?
C7 N5 C8 116.5(2) . . ?
C9 N6 C10 121.0(3) . . ?
C9 N6 C11 121.3(4) . . ?
C10 N6 C11 117.6(3) . . ?
C12 N7 C13 121.8(3) . . ?
C12 N7 C14 121.8(3) . . ?
C13 N7 C14 116.3(3) . . ?
C15 N8 C17 120.4(2) . . ?
C15 N8 C16 121.9(2) . . ?
C17 N8 C16 117.6(2) . . ?
N2 C1 N1 128.7(2) . 5_655 ?
N2 C1 C2 115.75(18) . . ?
N1 C1 C2 115.59(18) 5_655 . ?
N4 C2 N3 126.9(2) . . ?
N4 C2 C1 116.62(18) . . ?
N3 C2 C1 116.44(18) . . ?
N3 C3 C4 120.9(2) . . ?
C3 C4 C5 118.5(2) . . ?
N4 C5 C4 120.8(2) . . ?
O1 C6 N5 123.7(2) . . ?
O2 C9 N6 124.3(3) . . ?
O3 C12 N7 123.7(3) . . ?
O4 C15 N8 123.1(2) . . ?

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
C1 N1 N2 C1 0.4(3) 5_655 . . . ?
Ni1 N1 N2 C1 -179.68(13) . . . . ?
C1 N1 N2 Ni2 179.55(13) 5_655 . . . ?
Ni1 N1 N2 Ni2 -0.5(3) . . . . ?
N1 N2 C1 N1 -0.4(4) . . . 5_655 ?
Ni2 N2 C1 N1 -179.70(18) . . . 5_655 ?
N1 N2 C1 C2 -179.46(17) . . . . ?
Ni2 N2 C1 C2 1.3(3) . . . . ?
C5 N4 C2 N3 0.2(3) . . . . ?
Ni1 N4 C2 N3 -179.09(17) 5_655 . . . ?
C5 N4 C2 C1 -179.92(19) . . . . ?
Ni1 N4 C2 C1 0.8(2) 5_655 . . . ?
C3 N3 C2 N4 -0.3(3) . . . . ?
Ni2 N3 C2 N4 -179.67(17) . . . . ?
C3 N3 C2 C1 179.83(18) . . . . ?
Ni2 N3 C2 C1 0.4(2) . . . . ?
N2 C1 C2 N4 178.97(17) . . . . ?
N1 C1 C2 N4 -0.2(3) 5_655 . . . ?
N2 C1 C2 N3 -1.1(3) . . . . ?
N1 C1 C2 N3 179.71(17) 5_655 . . . ?
C2 N3 C3 C4 -0.2(3) . . . . ?
Ni2 N3 C3 C4 179.09(17) . . . . ?
N3 C3 C4 C5 0.6(4) . . . . ?
C2 N4 C5 C4 0.3(3) . . . . ?
Ni1 N4 C5 C4 179.47(17) 5_655 . . . ?
C3 C4 C5 N4 -0.7(4) . . . . ?
Ni1 O1 C6 N5 171.09(18) . . . . ?
C7 N5 C6 O1 -1.1(4) . . . . ?
C8 N5 C6 O1 -177.0(3) . . . . ?
Ni1 O2 C9 N6 177.4(2) . . . . ?
C10 N6 C9 O2 -1.5(5) . . . . ?
C11 N6 C9 O2 177.6(4) . . . . ?
Ni2 O3 C12 N7 173.9(2) . . . . ?
C13 N7 C12 O3 -0.4(5) . . . . ?
C14 N7 C12 O3 176.2(3) . . . . ?
Ni2 O4 C15 N8 166.28(18) . . . . ?
C17 N8 C15 O4 -0.5(4) . . . . ?
C16 N8 C15 O4 -177.9(3) . . . . ?

_refine_diff_density_max         0.756
_refine_diff_density_min         -0.496
_refine_diff_density_rms         0.079

