# Supplementary Material (ESI) for Chemical Communications # This journal is © The Royal Society of Chemistry 2003 data_global _journal_name_full Chem.Commun. _journal_coden_Cambridge 0182 loop_ _publ_author_name 'Ivan Bernal' 'Manas K. Saha' _publ_contact_author_name 'Dr Ivan Bernal' _publ_contact_author_address ; Department of Chemistry University of Houston Houston TX 77204 USA ; _publ_contact_author_email IBERNAL@UH.EDU _publ_section_title ; An unprecedented trans-Oriented product fro the Cleavage of a Dipeptide ; data_pbn21 _database_code_CSD 187487 _audit_creation_date 2002-05-22T18:30:50-00:00 _audit_creation_method 'WinGX routine CIF_UPDATE' #----------------------------------------------------------------------------# # CHEMICAL INFORMATION # #----------------------------------------------------------------------------# _chemical_formula_sum 'C14 H36 Cl3 Co N6 O16' _chemical_formula_weight 709.77 _chemical_compound_source 'synthesis as described' #----------------------------------------------------------------------------# # UNIT CELL INFORMATION # #----------------------------------------------------------------------------# _symmetry_cell_setting orthorhombic _symmetry_space_group_name_H-M 'P b n 21' _symmetry_space_group_name_Hall 'P 2c -2ab' _symmetry_Int_Tables_number 33 loop_ _symmetry_equiv_pos_as_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' _cell_length_a 11.696 _cell_length_b 14.532 _cell_length_c 16.561 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 2815 _cell_formula_units_Z 4 _cell_measurement_temperature 293(2) _cell_measurement_reflns_used 0 _cell_measurement_theta_min 0 _cell_measurement_theta_max 0 _cell_measurement_wavelength 0.71073 #----------------------------------------------------------------------------# # CRYSTAL INFORMATION # #----------------------------------------------------------------------------# _exptl_crystal_description prism _exptl_crystal_colour orange _exptl_crystal_size_max 0.4 _exptl_crystal_size_mid 0.3 _exptl_crystal_size_min 0.3 _exptl_crystal_density_diffrn 1.675 _exptl_crystal_density_method 'not measured' _exptl_crystal_F_000 1472 _exptl_special_details ; ? ; #----------------------------------------------------------------------------# # ABSORPTION CORRECTION # #----------------------------------------------------------------------------# _exptl_absorpt_coefficient_mu 0.975 _exptl_absorpt_correction_type none #----------------------------------------------------------------------------# # DATA COLLECTION # #----------------------------------------------------------------------------# _diffrn_ambient_temperature 293(2) _diffrn_radiation_wavelength 0.71073 _diffrn_radiation_type MoK\a _diffrn_radiation_monochromator graphite _diffrn_radiation_probe x-ray _diffrn_reflns_av_unetI/netI 0.0364 _diffrn_reflns_number 4775 _diffrn_reflns_limit_h_min -2 _diffrn_reflns_limit_h_max 14 _diffrn_reflns_limit_k_min -4 _diffrn_reflns_limit_k_max 17 _diffrn_reflns_limit_l_min -4 _diffrn_reflns_limit_l_max 20 _diffrn_reflns_theta_min 2.13 _diffrn_reflns_theta_max 25.95 _diffrn_reflns_theta_full 25.95 _diffrn_measured_fraction_theta_full 1 _diffrn_measured_fraction_theta_max 1 _reflns_number_total 3327 _reflns_number_gt 2149 _reflns_threshold_expression >2sigma(I) #----------------------------------------------------------------------------# # COMPUTER PROGRAMS USED # #----------------------------------------------------------------------------# _computing_data_collection 'CAD4 Express (Enraf Nonius, 1994)' _computing_cell_refinement 'CAD4 Express (Enraf Nonius, 1994)' _computing_data_reduction 'XCAD4 (Harms & Wocadlo, 1995)' _computing_structure_solution 'SHELXS-97 (Sheldrick, 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)' #----------------------------------------------------------------------------# # 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^)+(0.0530P)^2^+1.8847P] 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_number_reflns 3327 _refine_ls_number_parameters 352 _refine_ls_number_restraints 1 _refine_ls_R_factor_all 0.0796 _refine_ls_R_factor_gt 0.0337 _refine_ls_wR_factor_ref 0.1014 _refine_ls_wR_factor_gt 0.0838 _refine_ls_goodness_of_fit_ref 1.015 _refine_ls_restrained_S_all 1.014 _refine_ls_shift/su_max 0.674 _refine_ls_shift/su_mean 0.118 _refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881' _refine_ls_abs_structure_Flack 0.48(8) _refine_diff_density_max 0.333 _refine_diff_density_min -0.515 _refine_diff_density_rms 0.076 #----------------------------------------------------------------------------# # 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' O O 0.0106 0.006 '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' Co Co 0.3494 0.9721 '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 1.1109(10) 0.0590(7) 0.8232(8) 0.039(3) Uani 1 1 d . . . H1A H 1.1758 0.0269 0.8001 0.046 Uiso 1 1 calc R . . H1B H 1.1075 0.0442 0.8802 0.046 Uiso 1 1 calc R . . C2 C 1.0055(11) 0.0274(9) 0.7836(9) 0.044(4) Uani 1 1 d . . . H2A H 1.0045 -0.0393 0.7828 0.052 Uiso 1 1 calc R . . H2B H 1.0048 0.0488 0.7282 0.052 Uiso 1 1 calc R . . C3 C 0.8993(11) 0.0620(7) 0.8262(9) 0.044(3) Uani 1 1 d . . . H3A H 0.8329 0.0297 0.8055 0.052 Uiso 1 1 calc R . . H3B H 0.9053 0.0491 0.8835 0.052 Uiso 1 1 calc R . . C4 C 0.7756(8) 0.2000(7) 0.8481(8) 0.036(3) Uani 1 1 d . . . H4C H 0.7695 0.183 0.9045 0.043 Uiso 1 1 calc R . . H4D H 0.7109 0.1742 0.8193 0.043 Uiso 1 1 calc R . . C5 C 0.7774(9) 0.3026(7) 0.8393(8) 0.037(3) Uani 1 1 d . . . H5A H 0.7751 0.3198 0.7828 0.045 Uiso 1 1 calc R . . H5B H 0.7121 0.3297 0.8664 0.045 Uiso 1 1 calc R . . C6 C 0.8960(10) 0.4322(7) 0.8648(8) 0.038(3) Uani 1 1 d . . . H6A H 0.8272 0.4625 0.8839 0.046 Uiso 1 1 calc R . . H6B H 0.9036 0.4448 0.8076 0.046 Uiso 1 1 calc R . . C7 C 0.9962(11) 0.4705(8) 0.9081(10) 0.051(4) Uani 1 1 d . . . H7A H 0.9922 0.4523 0.9643 0.061 Uiso 1 1 calc R . . H7B H 0.9927 0.5371 0.906 0.061 Uiso 1 1 calc R . . C8 C 1.1127(11) 0.4383(8) 0.8726(8) 0.049(4) Uani 1 1 d . . . H8A H 1.1177 0.4578 0.8167 0.059 Uiso 1 1 calc R . . H8B H 1.1742 0.4679 0.902 0.059 Uiso 1 1 calc R . . C9 C 1.0796(8) 0.3242(8) 0.6905(7) 0.029(3) Uani 1 1 d . . . C10 C 1.0516(11) 0.3721(9) 0.6123(9) 0.043(3) Uani 1 1 d . . . H10A H 1.0955 0.3443 0.569 0.052 Uiso 1 1 calc R . . H10B H 1.074 0.4362 0.6162 0.052 Uiso 1 1 calc R . . C11 C 0.9225(9) 0.3666(9) 0.5912(8) 0.044(4) Uani 1 1 d . . . H11A H 0.8768 0.3747 0.6395 0.053 Uiso 1 1 calc R . . H11B H 0.9025 0.4147 0.5531 0.053 Uiso 1 1 calc R . . C12 C 1.0846(12) 0.1764(9) 0.9979(7) 0.039(3) Uani 1 1 d . . . C13 C 1.0475(11) 0.1245(9) 1.0735(9) 0.046(4) Uani 1 1 d . . . H13A H 1.0601 0.0595 1.0634 0.055 Uiso 1 1 calc R . . H13B H 1.0992 0.1421 1.1166 0.055 Uiso 1 1 calc R . . C14 C 0.9297(11) 0.1343(8) 1.1050(9) 0.048(4) Uani 1 1 d . . . H14A H 0.9202 0.0916 1.1494 0.058 Uiso 1 1 calc R . . H14B H 0.877 0.1158 1.0627 0.058 Uiso 1 1 calc R . . N1 N 1.1273(7) 0.1599(7) 0.8134(7) 0.037(3) Uani 1 1 d . . . H1C H 1.1413 0.1699 0.7607 0.044 Uiso 1 1 calc R . . H1D H 1.1916 0.1747 0.8402 0.044 Uiso 1 1 calc R . . N2 N 0.8839(7) 0.1651(6) 0.8137(6) 0.030(2) Uani 1 1 d . . . H2 H 0.8769 0.1726 0.7594 0.036 Uiso 1 1 calc R . . N3 N 0.8849(7) 0.3345(5) 0.8768(6) 0.025(2) Uani 1 1 d . . . H3 H 0.875 0.3268 0.9308 0.03 Uiso 1 1 calc R . . N4 N 1.1284(7) 0.3378(7) 0.8765(7) 0.034(3) Uani 1 1 d . . . H4A H 1.1483 0.3246 0.9277 0.04 Uiso 1 1 calc R . . H4B H 1.1896 0.3246 0.8457 0.04 Uiso 1 1 calc R . . N5 N 0.9003(9) 0.2759(8) 0.5555(8) 0.054(3) Uani 1 1 d . . . H5C H 0.8284 0.2735 0.538 0.081 Uiso 1 1 calc R . . H5D H 0.9113 0.2325 0.5926 0.081 Uiso 1 1 calc R . . H5E H 0.9477 0.2667 0.5143 0.081 Uiso 1 1 calc R . . N6 N 0.8957(9) 0.2268(7) 1.1333(9) 0.051(3) Uani 1 1 d . . . H6A' H 0.8216 0.2267 1.1457 0.077 Uiso 1 1 calc R . . H6B' H 0.9087 0.2678 1.0945 0.077 Uiso 1 1 calc R . . H6C H 0.9363 0.2415 1.1769 0.077 Uiso 1 1 calc R . . O1 O 1.1866(6) 0.3131(6) 0.7086(5) 0.039(2) Uani 1 1 d . . . O2 O 0.9990(6) 0.2995(6) 0.7370(5) 0.028(2) Uani 1 1 d . . . O3 O 0.9977(6) 0.2014(6) 0.9531(5) 0.030(2) Uani 1 1 d . . . O4 O 1.1815(7) 0.1879(7) 0.9832(6) 0.053(3) Uani 1 1 d . . . O5 O 1.2436(10) 0.0845(9) 0.6393(5) 0.097(3) Uani 1 1 d . . . O7 O 1.1760(15) 0.0418(9) 0.5058(8) 0.164(7) Uani 1 1 d . . . O8 O 1.0795(10) 0.1351(10) 0.5999(8) 0.121(5) Uani 1 1 d . . . O9 O 1.0245(8) 0.2799(8) 0.4124(7) 0.076(3) Uani 1 1 d . . . O10 O 1.0237(8) 0.2102(6) 0.2864(6) 0.053(2) Uani 1 1 d . . . O11 O 0.8812(9) 0.3199(7) 0.3137(7) 0.094(4) Uani 1 1 d . . . O12 O 0.8845(9) 0.1775(7) 0.3733(10) 0.114(5) Uani 1 1 d . . . O13 O 1.2359(10) 0.3124(6) 0.1608(5) 0.101(4) Uani 1 1 d . . . O14 O 1.1893(15) 0.4626(8) 0.1783(8) 0.156(7) Uani 1 1 d . . . O15 O 1.2475(12) 0.4169(10) 0.0637(9) 0.156(6) Uani 1 1 d . . . O16 O 1.0735(8) 0.3737(9) 0.1074(10) 0.131(6) Uani 1 1 d . . . O024 O 1.2365(7) 0.1921(6) 0.5299(6) 0.068(3) Uiso 1 1 d . . . Cl1 Cl 1.1864(3) 0.1087(3) 0.56576(18) 0.0554(11) Uani 1 1 d . . . Cl2 Cl 0.95311(8) 0.2496(3) 0.3465(4) 0.0477(3) Uani 1 1 d . . . Cl3 Cl 1.1851(3) 0.3904(3) 0.12734(19) 0.0517(10) Uiso 1 1 d . . . Co Co 1.00883(4) 0.24997(13) 0.8466(2) 0.02349(15) 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 0.040(6) 0.028(6) 0.048(8) 0.005(6) 0.007(6) 0.008(5) C2 0.058(7) 0.038(7) 0.035(8) -0.002(6) 0.007(6) 0.021(6) C3 0.047(7) 0.023(6) 0.061(9) 0.006(6) 0.005(7) -0.007(5) C4 0.006(4) 0.066(8) 0.036(6) 0.006(7) -0.004(4) 0.003(4) C5 0.033(6) 0.040(7) 0.038(6) -0.006(6) -0.012(5) 0.013(5) C6 0.034(6) 0.046(7) 0.036(8) 0.002(7) 0.002(6) 0.012(5) C7 0.059(7) 0.031(7) 0.062(10) -0.001(7) 0.002(6) 0.014(6) C8 0.052(8) 0.064(9) 0.033(7) 0.009(7) -0.010(6) -0.034(7) C9 0.012(4) 0.047(7) 0.029(6) -0.009(5) 0.004(4) 0.003(5) C10 0.049(7) 0.052(8) 0.028(6) 0.012(6) -0.009(5) -0.003(6) C11 0.027(5) 0.069(9) 0.036(7) 0.021(7) -0.008(5) -0.002(5) C12 0.056(8) 0.040(7) 0.022(6) 0.008(5) 0.005(5) 0.022(6) C13 0.043(7) 0.067(9) 0.027(5) 0.012(6) -0.008(5) 0.027(6) C14 0.065(8) 0.050(8) 0.030(6) 0.000(6) -0.005(6) -0.013(6) N1 0.022(5) 0.049(6) 0.040(6) -0.007(5) 0.005(4) 0.017(5) N2 0.012(4) 0.054(6) 0.025(5) -0.003(5) -0.005(4) -0.009(4) N3 0.028(5) 0.023(5) 0.026(5) 0.003(4) -0.007(4) -0.001(4) N4 0.021(5) 0.050(6) 0.029(6) 0.011(5) -0.002(4) 0.002(5) N5 0.042(7) 0.083(9) 0.038(6) 0.013(7) -0.018(5) -0.016(7) N6 0.030(6) 0.083(8) 0.042(6) 0.001(7) 0.000(5) 0.006(6) O1 0.028(4) 0.064(6) 0.025(4) 0.014(5) 0.005(3) -0.007(4) O2 0.011(4) 0.044(5) 0.029(5) 0.013(4) -0.002(3) 0.001(4) O3 0.027(4) 0.042(5) 0.020(4) 0.000(4) -0.004(4) 0.007(4) O4 0.015(4) 0.094(8) 0.051(5) -0.002(6) 0.001(4) 0.002(4) O5 0.113(7) 0.134(8) 0.043(4) 0.033(5) -0.005(5) -0.020(7) O7 0.296(17) 0.114(9) 0.083(8) -0.045(8) 0.016(10) -0.130(10) O8 0.111(9) 0.133(9) 0.120(9) -0.004(8) 0.073(7) -0.005(7) O9 0.026(4) 0.153(9) 0.050(6) -0.009(6) -0.007(4) -0.009(5) O10 0.045(5) 0.064(4) 0.050(5) -0.027(4) -0.003(4) 0.010(4) O11 0.064(6) 0.132(9) 0.086(6) -0.020(7) -0.022(6) 0.055(6) O12 0.055(6) 0.081(7) 0.206(15) -0.011(9) 0.031(8) -0.022(6) O13 0.167(8) 0.099(5) 0.038(3) -0.002(3) -0.022(4) 0.102(5) O14 0.303(18) 0.077(7) 0.086(8) -0.034(6) -0.107(10) 0.043(8) O15 0.146(10) 0.139(10) 0.182(13) 0.034(10) 0.068(11) -0.051(9) O16 0.037(4) 0.148(10) 0.209(15) 0.078(11) -0.013(7) -0.005(5) Cl1 0.0656(16) 0.0635(16) 0.0370(11) -0.0047(9) 0.0199(9) -0.0234(11) Cl2 0.0216(5) 0.0702(7) 0.0514(7) -0.0135(7) 0.001(2) -0.003(2) Co 0.0139(2) 0.0342(3) 0.0224(3) 0.0026(2) -0.0047(9) 0.0011(9) #----------------------------------------------------------------------------# # 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 1.469(18) . ? C1 N1 1.488(13) . ? C2 C3 1.514(18) . ? C3 N2 1.523(14) . ? C4 N2 1.478(12) . ? C4 C5 1.498(7) . ? C5 N3 1.476(13) . ? C6 N3 1.439(14) . ? C6 C7 1.482(18) . ? C7 C8 1.556(17) . ? C8 N4 1.473(15) . ? C9 O2 1.269(13) . ? C9 O1 1.297(13) . ? C9 C10 1.507(18) . ? C10 C11 1.552(16) . ? C11 N5 1.467(16) . ? C12 O4 1.171(15) . ? C12 O3 1.309(14) . ? C12 C13 1.525(18) . ? C13 C14 1.480(18) . ? C14 N6 1.478(15) . ? N1 Co 1.984(8) . ? N2 Co 1.988(8) . ? N3 Co 1.965(8) . ? N4 Co 1.957(9) . ? O2 Co 1.956(9) . ? O3 Co 1.905(9) . ? O5 Cl1 1.434(10) . ? O7 Cl1 1.395(11) . ? O8 Cl1 1.426(11) . ? O9 Cl2 1.444(12) . ? O10 Cl2 1.413(10) . ? O11 Cl2 1.431(10) . ? O12 Cl2 1.393(11) . ? O13 Cl3 1.394(8) . ? O14 Cl3 1.348(10) . ? O15 Cl3 1.339(13) . ? O16 Cl3 1.367(10) . ? O024 Cl1 1.472(10) . ? 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 N1 111.5(11) . . ? C1 C2 C3 112.1(13) . . ? N2 C3 C2 111.1(11) . . ? N2 C4 C5 107.0(10) . . ? N3 C5 C4 106.5(9) . . ? N3 C6 C7 112.0(11) . . ? C6 C7 C8 113.4(13) . . ? N4 C8 C7 113.0(11) . . ? O2 C9 O1 122.8(11) . . ? O2 C9 C10 119.4(9) . . ? O1 C9 C10 117.8(10) . . ? C9 C10 C11 112.4(10) . . ? N5 C11 C10 108.0(10) . . ? O4 C12 O3 126.4(12) . . ? O4 C12 C13 121.1(12) . . ? O3 C12 C13 112.4(11) . . ? C14 C13 C12 120.4(11) . . ? C13 C14 N6 116.8(10) . . ? C1 N1 Co 122.0(7) . . ? C4 N2 C3 112.7(9) . . ? C4 N2 Co 108.1(7) . . ? C3 N2 Co 119.1(7) . . ? C6 N3 C5 109.2(8) . . ? C6 N3 Co 121.0(7) . . ? C5 N3 Co 109.0(6) . . ? C8 N4 Co 123.1(7) . . ? C9 O2 Co 128.6(7) . . ? C12 O3 Co 125.0(8) . . ? O7 Cl1 O8 113.2(10) . . ? O7 Cl1 O5 118.4(9) . . ? O8 Cl1 O5 97.9(8) . . ? O7 Cl1 O024 108.8(7) . . ? O8 Cl1 O024 106.7(7) . . ? O5 Cl1 O024 111.0(6) . . ? O12 Cl2 O10 104.9(7) . . ? O12 Cl2 O11 108.6(3) . . ? O10 Cl2 O11 111.5(8) . . ? O12 Cl2 O9 108.7(10) . . ? O10 Cl2 O9 108.5(2) . . ? O11 Cl2 O9 114.2(7) . . ? O14 Cl3 O15 104.4(10) . . ? O14 Cl3 O16 108.9(10) . . ? O15 Cl3 O16 112.4(10) . . ? O14 Cl3 O13 111.6(6) . . ? O15 Cl3 O13 108.4(8) . . ? O16 Cl3 O13 111.0(7) . . ? O3 Co N4 93.2(4) . . ? O3 Co O2 172.71(11) . . ? N4 Co O2 92.1(4) . . ? O3 Co N3 86.9(4) . . ? N4 Co N3 93.2(4) . . ? O2 Co N3 87.8(4) . . ? O3 Co N1 93.5(4) . . ? N4 Co N1 90.08(15) . . ? O2 Co N1 91.5(4) . . ? N3 Co N1 176.7(4) . . ? O3 Co N2 88.5(4) . . ? N4 Co N2 177.5(4) . . ? O2 Co N2 86.0(4) . . ? N3 Co N2 85.14(13) . . ? N1 Co N2 91.6(4) . . ?