# Supplementary Material (ESI) for Chemical Communications # This journal is (c) The Royal Society of Chemistry 2009 data_global _journal_name_full Chem.Commun. _journal_coden_cambridge 0182 _journal_year ? _journal_volume ? _journal_page_first ? loop_ _publ_author_name 'Chuan-De Wu' 'Miao Wang' 'Yan-Guang Wang' 'Ming-Hua Xie' _publ_contact_author_name 'Chuan-De Wu' _publ_contact_author_email CDWU@ZJU.EDU.CN data_New _database_code_depnum_ccdc_archive 'CCDC 709104' _audit_creation_method SHELXL-97 _chemical_name_systematic ; ? ; _chemical_name_common ? _chemical_melting_point ? _chemical_formula_moiety 'C18 H20 Cl2 Cu2 N4 O6, H2 O' _chemical_formula_sum 'C18 H22 Cl2 Cu2 N4 O7' _chemical_formula_weight 604.38 _chemical_absolute_configuration S 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' Cu Cu 0.3201 1.2651 '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' _symmetry_cell_setting monoclinic _symmetry_space_group_name_H-M P2(1) loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x, y+1/2, -z' _cell_length_a 10.3787(2) _cell_length_b 6.6130(1) _cell_length_c 16.8336(2) _cell_angle_alpha 90.00 _cell_angle_beta 103.344(1) _cell_angle_gamma 90.00 _cell_volume 1124.17(3) _cell_formula_units_Z 2 _cell_measurement_temperature 293(2) _cell_measurement_reflns_used 9767 _cell_measurement_theta_min 1.24 _cell_measurement_theta_max 27.56 _exptl_crystal_description Bloc _exptl_crystal_colour Blue _exptl_crystal_size_max 0.15 _exptl_crystal_size_mid 0.09 _exptl_crystal_size_min 0.07 _exptl_crystal_density_meas ? _exptl_crystal_density_diffrn 1.785 _exptl_crystal_density_method 'not measured' _exptl_crystal_F_000 612 _exptl_absorpt_coefficient_mu 2.178 _exptl_absorpt_correction_type empirical _exptl_absorpt_correction_T_min 0.790 _exptl_absorpt_correction_T_max 0.859 _exptl_absorpt_process_details '(SADABS; Sheldrick, 1996)' _exptl_special_details ; ? ; _diffrn_ambient_temperature 296(2) _diffrn_radiation_wavelength 0.71073 _diffrn_radiation_type MoK\a _diffrn_radiation_source 'fine-focus sealed tube' _diffrn_radiation_monochromator graphite _diffrn_measurement_device_type 'Siemens SMART CCD area-detector' _diffrn_measurement_method '\f and \w' _diffrn_detector_area_resol_mean ? _diffrn_standards_number none _diffrn_standards_interval_count none _diffrn_standards_interval_time none _diffrn_standards_decay_% none _diffrn_reflns_number 9767 _diffrn_reflns_av_R_equivalents 0.0262 _diffrn_reflns_av_sigmaI/netI 0.0591 _diffrn_reflns_limit_h_min -13 _diffrn_reflns_limit_h_max 13 _diffrn_reflns_limit_k_min -8 _diffrn_reflns_limit_k_max 8 _diffrn_reflns_limit_l_min -21 _diffrn_reflns_limit_l_max 21 _diffrn_reflns_theta_min 1.24 _diffrn_reflns_theta_max 27.56 _reflns_number_total 4669 _reflns_number_gt 3721 _reflns_threshold_expression >2sigma(I) _computing_data_collection 'Siemens SMART' _computing_cell_refinement 'Siemens SMART & SAINT' _computing_data_reduction 'Siemens XPREP' _computing_structure_solution 'Siemens SHELXTL' _computing_structure_refinement 'Siemens SHELXTL' _computing_molecular_graphics 'Siemens SHELXTL' _computing_publication_material 'Siemens SHELXTL' _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^)+(0.0289P)^2^+0.0000P] 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_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881' _refine_ls_abs_structure_Flack 0.017(12) _refine_ls_number_reflns 4669 _refine_ls_number_parameters 304 _refine_ls_number_restraints 1 _refine_ls_R_factor_ref 0.0541 _refine_ls_R_factor_gt 0.0371 _refine_ls_wR_factor_ref 0.0746 _refine_ls_wR_factor_gt 0.0682 _refine_ls_goodness_of_fit_ref 0.989 _refine_ls_restrained_S_all 0.989 _refine_ls_shift/su_max 0.000 _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 Cu1 Cu -0.80916(5) -1.00399(7) 0.48872(2) 0.03589(19) Uani 1 1 d . . . Cu2 Cu -0.83606(4) -0.44908(7) -0.00716(2) 0.03034(16) Uani 1 1 d . . . Cl1 Cl -1.01746(10) -1.12166(19) 0.44132(6) 0.0401(3) Uani 1 1 d . . . Cl2 Cl -1.03988(9) -0.58577(18) -0.05181(5) 0.0356(3) Uani 1 1 d . . . O1 O -0.4793(3) -0.3618(5) 0.12894(15) 0.0435(8) Uani 1 1 d . . . O2 O -0.6740(3) -0.3047(5) 0.04503(15) 0.0352(7) Uani 1 1 d . . . O3 O -0.6641(3) -0.7171(5) -0.02360(15) 0.0468(8) Uani 1 1 d . . . H3A H -0.6212 -0.7604 -0.0552 0.070 Uiso 1 1 calc R . . O4 O -0.4603(3) 0.0547(6) -0.36283(16) 0.0597(10) Uani 1 1 d . . . O5 O -0.6453(3) 0.1314(5) -0.45272(15) 0.0415(8) Uani 1 1 d . . . O6 O -0.6634(3) -0.2742(5) -0.52624(16) 0.0557(10) Uani 1 1 d . . . H6B H -0.6260 -0.3257 -0.5592 0.084 Uiso 1 1 calc R . . O101 O -0.4806(8) -0.0908(11) 0.2606(4) 0.149(3) Uani 1 1 d . . . H01A H -0.541(9) -0.172(17) 0.255(6) 0.179 Uiso 1 1 d . . . H01B H -0.483(7) 0.067(19) 0.241(4) 0.179 Uiso 1 1 d . . . N1 N -0.8065(3) -0.8514(7) 0.38727(17) 0.0359(9) Uani 1 1 d . . . N2 N -0.7897(3) -0.6136(5) 0.09684(15) 0.0259(8) Uani 1 1 d . . . H2B H -0.8224 -0.7411 0.0870 0.031 Uiso 1 1 calc R . . N3 N -0.8340(3) -0.3217(6) -0.11338(16) 0.0293(8) Uani 1 1 d . . . N4 N -0.7805(3) -0.1584(6) -0.40540(16) 0.0280(8) Uani 1 1 d . . . H4B H -0.8228 -0.2798 -0.4135 0.034 Uiso 1 1 calc R . . C1 C -0.8357(4) -0.6543(8) 0.3810(2) 0.0390(12) Uani 1 1 d . . . H1A H -0.8502 -0.5865 0.4265 0.047 Uiso 1 1 calc R . . C2 C -0.8453(4) -0.5484(7) 0.3098(2) 0.0369(11) Uani 1 1 d . . . H2A H -0.8673 -0.4119 0.3075 0.044 Uiso 1 1 calc R . . C3 C -0.8223(3) -0.6440(7) 0.24167(19) 0.0293(10) Uani 1 1 d . . . C4 C -0.7877(4) -0.8460(7) 0.2482(2) 0.0368(11) Uani 1 1 d . . . H4A H -0.7699 -0.9160 0.2041 0.044 Uiso 1 1 calc R . . C5 C -0.7802(4) -0.9417(8) 0.3223(2) 0.0433(11) Uani 1 1 d . . . H5A H -0.7553 -1.0771 0.3268 0.052 Uiso 1 1 calc R . . C6 C -0.8392(3) -0.5234(7) 0.16335(19) 0.0338(10) Uani 1 1 d . . . H6A H -0.8795 -0.3970 0.1578 0.041 Uiso 1 1 calc R . . C7 C -0.6427(3) -0.6191(7) 0.1143(2) 0.0305(10) Uani 1 1 d . . . H7A H -0.6060 -0.6550 0.1716 0.037 Uiso 1 1 calc R . . C8 C -0.5944(4) -0.4133(8) 0.0959(2) 0.0329(11) Uani 1 1 d . . . C9 C -0.6000(4) -0.7721(7) 0.0580(2) 0.0425(12) Uani 1 1 d . . . H9A H -0.5046 -0.7692 0.0649 0.051 Uiso 1 1 calc R . . H9B H -0.6259 -0.9075 0.0701 0.051 Uiso 1 1 calc R . . C10 C -0.8046(4) -0.1252(7) -0.1183(2) 0.0354(10) Uani 1 1 d . . . H10A H -0.7885 -0.0462 -0.0714 0.043 Uiso 1 1 calc R . . C11 C -0.7977(3) -0.0377(7) -0.1921(2) 0.0353(10) Uani 1 1 d . . . H11A H -0.7767 0.0987 -0.1938 0.042 Uiso 1 1 calc R . . C12 C -0.8213(3) -0.1490(7) -0.26220(19) 0.0275(10) Uani 1 1 d . . . C13 C -0.8479(4) -0.3532(7) -0.2564(2) 0.0401(12) Uani 1 1 d . . . H13A H -0.8611 -0.4363 -0.3022 0.048 Uiso 1 1 calc R . . C14 C -0.8545(4) -0.4309(8) -0.1810(2) 0.0392(11) Uani 1 1 d . . . H14A H -0.8745 -0.5673 -0.1777 0.047 Uiso 1 1 calc R . . C15 C -0.8240(4) -0.0436(7) -0.3420(2) 0.0345(11) Uani 1 1 d . . . H15A H -0.8522 0.0898 -0.3507 0.041 Uiso 1 1 calc R . . C16 C -0.6350(4) -0.1881(7) -0.3861(2) 0.0371(11) Uani 1 1 d . . . H16A H -0.6027 -0.2327 -0.3295 0.044 Uiso 1 1 calc R . . C17 C -0.5746(4) 0.0114(8) -0.4001(2) 0.0388(12) Uani 1 1 d . . . C18 C -0.6014(5) -0.3424(8) -0.4452(2) 0.0506(13) Uani 1 1 d . . . H18A H -0.5063 -0.3516 -0.4386 0.061 Uiso 1 1 calc R . . H18B H -0.6348 -0.4748 -0.4352 0.061 Uiso 1 1 calc R . . 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 Cu1 0.0394(3) 0.0506(5) 0.0177(2) 0.0114(2) 0.00686(18) -0.0068(3) Cu2 0.0348(2) 0.0407(4) 0.01519(19) 0.0067(2) 0.00498(16) -0.0092(3) Cl1 0.0459(6) 0.0433(8) 0.0281(5) 0.0037(5) 0.0026(4) -0.0099(6) Cl2 0.0361(5) 0.0410(8) 0.0276(4) 0.0036(5) 0.0029(4) -0.0100(5) O1 0.0283(15) 0.064(2) 0.0373(14) 0.0034(17) 0.0064(12) -0.0132(15) O2 0.0394(16) 0.0328(19) 0.0317(14) 0.0049(14) 0.0047(12) -0.0070(15) O3 0.0521(18) 0.060(2) 0.0330(15) -0.0045(16) 0.0194(13) 0.0136(17) O4 0.0327(15) 0.094(3) 0.0507(16) 0.017(2) 0.0058(12) -0.015(2) O5 0.0411(16) 0.050(2) 0.0337(14) 0.0126(16) 0.0090(12) -0.0064(16) O6 0.071(2) 0.070(3) 0.0320(15) 0.0052(17) 0.0234(15) 0.030(2) O101 0.252(9) 0.087(5) 0.114(4) -0.030(4) 0.051(5) -0.017(5) N1 0.0393(19) 0.049(3) 0.0213(15) 0.0100(18) 0.0103(13) -0.0053(19) N2 0.0316(16) 0.031(2) 0.0166(13) 0.0020(15) 0.0088(12) -0.0054(16) N3 0.0376(19) 0.034(2) 0.0175(14) 0.0059(16) 0.0097(13) -0.0061(18) N4 0.0320(17) 0.032(2) 0.0211(14) 0.0028(15) 0.0080(12) -0.0029(17) C1 0.045(2) 0.054(4) 0.0217(18) -0.001(2) 0.0152(17) -0.007(3) C2 0.042(2) 0.045(3) 0.0271(18) 0.004(2) 0.0130(16) 0.000(2) C3 0.0247(19) 0.043(3) 0.0213(17) 0.008(2) 0.0083(15) -0.001(2) C4 0.053(3) 0.036(3) 0.0241(18) 0.001(2) 0.0146(17) 0.004(2) C5 0.066(3) 0.037(3) 0.0273(18) 0.012(2) 0.0109(18) 0.003(3) C6 0.040(2) 0.044(3) 0.0222(16) 0.014(2) 0.0162(15) 0.010(2) C7 0.0255(19) 0.042(3) 0.0241(18) 0.005(2) 0.0058(15) 0.001(2) C8 0.031(2) 0.046(3) 0.0245(17) 0.002(2) 0.0118(15) -0.004(2) C9 0.047(3) 0.042(3) 0.040(2) 0.007(2) 0.013(2) 0.011(2) C10 0.048(2) 0.039(3) 0.0201(17) -0.001(2) 0.0078(16) -0.010(2) C11 0.043(2) 0.037(3) 0.0257(17) 0.001(2) 0.0086(16) -0.009(2) C12 0.0270(19) 0.036(3) 0.0204(17) 0.008(2) 0.0081(15) -0.001(2) C13 0.062(3) 0.039(3) 0.0219(18) 0.002(2) 0.0148(18) -0.007(3) C14 0.064(3) 0.031(3) 0.0266(18) 0.003(2) 0.0171(17) 0.001(3) C15 0.055(2) 0.031(3) 0.0222(17) 0.0084(19) 0.0199(17) 0.007(2) C16 0.037(2) 0.051(3) 0.0247(19) 0.013(2) 0.0101(16) 0.007(2) C17 0.034(2) 0.058(4) 0.0257(18) 0.008(2) 0.0104(15) -0.001(3) C18 0.059(3) 0.056(4) 0.041(2) 0.011(3) 0.018(2) 0.020(3) _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 Cu1 O5 1.973(3) 1_546 ? Cu1 N1 1.989(3) . ? Cu1 N4 2.016(3) 1_546 ? Cu1 Cl1 2.2626(11) . ? Cu1 O6 2.392(3) 1_546 ? Cu2 O2 1.957(3) . ? Cu2 N3 1.981(3) . ? Cu2 N2 2.023(3) . ? Cu2 Cl2 2.2633(10) . ? Cu2 Cl2 3.0010(12) 2_355 ? O1 C8 1.243(4) . ? O2 C8 1.266(5) . ? O3 C9 1.428(5) . ? O3 H3A 0.8200 . ? O4 C17 1.241(4) . ? O5 C17 1.285(5) . ? O5 Cu1 1.973(3) 1_564 ? O6 C18 1.440(5) . ? O6 Cu1 2.392(3) 1_564 ? O6 H6B 0.8200 . ? O101 H01A 0.81(9) . ? O101 H01B 1.09(11) . ? N1 C5 1.329(5) . ? N1 C1 1.337(6) . ? N2 C6 1.463(4) . ? N2 C7 1.486(4) . ? N2 H2B 0.9100 . ? N3 C14 1.323(5) . ? N3 C10 1.342(6) . ? N4 C15 1.463(4) . ? N4 C16 1.483(5) . ? N4 Cu1 2.016(3) 1_564 ? N4 H4B 0.9100 . ? C1 C2 1.371(5) . ? C1 H1A 0.9300 . ? C2 C3 1.378(5) . ? C2 H2A 0.9300 . ? C3 C4 1.382(6) . ? C3 C6 1.516(5) . ? C4 C5 1.384(5) . ? C4 H4A 0.9300 . ? C5 H5A 0.9300 . ? C6 H6A 0.9300 . ? C7 C8 1.507(6) . ? C7 C9 1.521(5) . ? C7 H7A 0.9800 . ? C9 H9A 0.9700 . ? C9 H9B 0.9700 . ? C10 C11 1.386(5) . ? C10 H10A 0.9300 . ? C11 C12 1.364(5) . ? C11 H11A 0.9300 . ? C12 C13 1.386(6) . ? C12 C15 1.509(5) . ? C13 C14 1.386(5) . ? C13 H13A 0.9300 . ? C14 H14A 0.9300 . ? C15 H15A 0.9300 . ? C16 C17 1.503(7) . ? C16 C18 1.520(6) . ? C16 H16A 0.9800 . ? C18 H18A 0.9700 . ? C18 H18B 0.9700 . ? 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 O5 Cu1 N1 91.01(13) 1_546 . ? O5 Cu1 N4 81.59(12) 1_546 1_546 ? N1 Cu1 N4 170.96(13) . 1_546 ? O5 Cu1 Cl1 167.32(9) 1_546 . ? N1 Cu1 Cl1 94.20(10) . . ? N4 Cu1 Cl1 94.10(9) 1_546 . ? O5 Cu1 O6 84.17(13) 1_546 1_546 ? N1 Cu1 O6 98.85(13) . 1_546 ? N4 Cu1 O6 75.34(11) 1_546 1_546 ? Cl1 Cu1 O6 106.38(9) . 1_546 ? O2 Cu2 N3 90.60(12) . . ? O2 Cu2 N2 82.27(12) . . ? N3 Cu2 N2 163.72(12) . . ? O2 Cu2 Cl2 169.88(9) . . ? N3 Cu2 Cl2 94.24(10) . . ? N2 Cu2 Cl2 95.17(9) . . ? O2 Cu2 Cl2 81.43(9) . 2_355 ? N3 Cu2 Cl2 93.03(11) . 2_355 ? N2 Cu2 Cl2 100.31(9) . 2_355 ? Cl2 Cu2 Cl2 89.44(2) . 2_355 ? C8 O2 Cu2 112.7(3) . . ? C9 O3 H3A 109.5 . . ? C17 O5 Cu1 110.7(3) . 1_564 ? C18 O6 Cu1 106.8(2) . 1_564 ? C18 O6 H6B 109.5 . . ? Cu1 O6 H6B 142.2 1_564 . ? H01A O101 H01B 129(10) . . ? C5 N1 C1 117.3(4) . . ? C5 N1 Cu1 121.7(3) . . ? C1 N1 Cu1 121.0(3) . . ? C6 N2 C7 112.6(3) . . ? C6 N2 Cu2 112.8(3) . . ? C7 N2 Cu2 102.3(2) . . ? C6 N2 H2B 109.6 . . ? C7 N2 H2B 109.6 . . ? Cu2 N2 H2B 109.6 . . ? C14 N3 C10 118.0(3) . . ? C14 N3 Cu2 120.7(3) . . ? C10 N3 Cu2 121.2(2) . . ? C15 N4 C16 112.3(3) . . ? C15 N4 Cu1 112.0(3) . 1_564 ? C16 N4 Cu1 101.3(2) . 1_564 ? C15 N4 H4B 110.3 . . ? C16 N4 H4B 110.3 . . ? Cu1 N4 H4B 110.3 1_564 . ? N1 C1 C2 122.4(4) . . ? N1 C1 H1A 118.8 . . ? C2 C1 H1A 118.8 . . ? C1 C2 C3 120.1(4) . . ? C1 C2 H2A 119.9 . . ? C3 C2 H2A 119.9 . . ? C2 C3 C4 117.9(3) . . ? C2 C3 C6 118.4(4) . . ? C4 C3 C6 123.7(3) . . ? C3 C4 C5 118.3(4) . . ? C3 C4 H4A 120.9 . . ? C5 C4 H4A 120.9 . . ? N1 C5 C4 123.8(5) . . ? N1 C5 H5A 118.1 . . ? C4 C5 H5A 118.1 . . ? N2 C6 C3 117.4(4) . . ? N2 C6 H6A 121.3 . . ? C3 C6 H6A 121.3 . . ? N2 C7 C8 108.2(3) . . ? N2 C7 C9 109.1(3) . . ? C8 C7 C9 108.3(3) . . ? N2 C7 H7A 110.4 . . ? C8 C7 H7A 110.4 . . ? C9 C7 H7A 110.4 . . ? O1 C8 O2 123.8(4) . . ? O1 C8 C7 119.1(4) . . ? O2 C8 C7 117.1(3) . . ? O3 C9 C7 107.0(3) . . ? O3 C9 H9A 110.3 . . ? C7 C9 H9A 110.3 . . ? O3 C9 H9B 110.3 . . ? C7 C9 H9B 110.3 . . ? H9A C9 H9B 108.6 . . ? N3 C10 C11 121.3(4) . . ? N3 C10 H10A 119.3 . . ? C11 C10 H10A 119.4 . . ? C12 C11 C10 120.9(4) . . ? C12 C11 H11A 119.6 . . ? C10 C11 H11A 119.5 . . ? C11 C12 C13 117.6(3) . . ? C11 C12 C15 119.0(4) . . ? C13 C12 C15 123.4(3) . . ? C14 C13 C12 118.5(4) . . ? C14 C13 H13A 120.7 . . ? C12 C13 H13A 120.7 . . ? N3 C14 C13 123.6(4) . . ? N3 C14 H14A 118.2 . . ? C13 C14 H14A 118.2 . . ? N4 C15 C12 117.7(4) . . ? N4 C15 H15A 121.2 . . ? C12 C15 H15A 121.2 . . ? N4 C16 C17 106.8(4) . . ? N4 C16 C18 108.7(3) . . ? C17 C16 C18 108.7(3) . . ? N4 C16 H16A 110.8 . . ? C17 C16 H16A 110.8 . . ? C18 C16 H16A 110.8 . . ? O4 C17 O5 122.2(5) . . ? O4 C17 C16 120.5(4) . . ? O5 C17 C16 117.2(3) . . ? O6 C18 C16 106.9(3) . . ? O6 C18 H18A 110.4 . . ? C16 C18 H18A 110.4 . . ? O6 C18 H18B 110.4 . . ? C16 C18 H18B 110.4 . . ? H18A C18 H18B 108.6 . . ? _diffrn_measured_fraction_theta_max 0.987 _diffrn_reflns_theta_full 27.56 _diffrn_measured_fraction_theta_full 0.987 _refine_diff_density_max 0.445 _refine_diff_density_min -0.375 _refine_diff_density_rms 0.074