Wall clock time and date at job start Sat Apr 11 2020 06:09:51 AMSOL-version 7.1 by G. D. Hawkins, D. J. Giesen, G. C. Lynch, C. C. Chambers, I. Rossi, J. W. Storer, J. Li, J. D. Thompson, P. Winget, B. J. Lynch, D. Rinaldi, D. A. Liotard, C. J. Cramer, and D. G. Truhlar Copyright 2004 by Regents of the University of Minnesota. All rights reserved. Notice: recipients of this code are asked to comply with the user agreement in Section 1 of the documentation file. ******************************************************************************* * 1SCF - SCF CALCULATION WITHOUT GEOMETRY OPTIMIZATION * - USE EF ROUTINE FOR MINIMUM SEARCH (DEFAULT) * GEO-OK - OVERRIDE INTERATOMIC DISTANCE CHECK * TLIMIT= - A TIME OF 15. SECONDS REQUESTED * CHARGE - CHARGE ON SYSTEM= -1 * AM1 - THE AM1 HAMILTONIAN TO BE USED * DEV - DEVELOPER OPTIONS ARE ALLOWED * SM5.42R - SM5.42R CALCULATIONS WILL BE PERFORMED * - CHARGE MODEL 2 WILL BE USED (CM2A) * - THE SOLVENT IS USER-SPECIFIED * DIELEC - THE SOLVENT DIELECTRIC CONSTANT IS 2.06 * IOFR - THE SOLVENT INDEX OF REFRACTION IS 1.4345 * ALPHA - THE SOLVENT ALPHA IS 0.00 * BETA - THE SOLVENT BETA IS 0.00 * GAMMA - THE SOLVENT MACROSCOPIC SURFACE TENSION IS * 38.93 CAL MOL^-1 ANGSTROM^-2 * FACARB - THE FRACTION OF AROMATIC CARBONS IS 0.00 * FEHALO - THE FRACTION OF ELECTRONEGATIVE HALOGENS IS 0.00 ******************************************************************************* Atom NO. Chemical Bond length Bond angle Dihedral angle number (k) symbol (angstroms) (degrees) (degrees) (I) NA:I NB:NA:I NC:NB:NA:I NA NB NC 1 1 C 2 2 C 1.52998 * 1 3 3 C 1.52999 * 109.46442 * 2 1 4 4 N 1.46500 * 109.47528 * 59.99688 * 3 2 1 5 5 C 1.34773 * 120.00431 * 180.02562 * 4 3 2 6 6 O 1.21593 * 119.99894 * 359.97438 * 5 4 3 7 7 N 1.34777 * 120.00097 * 179.72742 * 5 4 3 8 8 C 1.46504 * 119.99854 * 180.27545 * 7 5 4 9 9 C 1.53004 * 109.46928 * 179.97438 * 8 7 5 10 10 C 1.53000 * 109.46988 * 179.97438 * 9 8 7 11 11 C 1.50701 * 109.46983 * 179.97438 * 10 9 8 12 12 H 1.08000 * 119.99624 * 359.97438 * 11 10 9 13 13 C 1.37872 * 119.99634 * 179.97438 * 11 10 9 14 14 N 1.31517 * 120.00657 * 0.02562 * 13 11 10 15 15 Si 1.86803 * 119.99703 * 180.02562 * 13 11 10 16 16 H 1.48504 * 109.47233 * 60.00389 * 15 13 11 17 17 H 1.48496 * 109.47105 * 180.02562 * 15 13 11 18 18 H 1.48501 * 109.47194 * 300.00217 * 15 13 11 19 19 C 1.52998 * 109.46574 * 119.97585 * 2 1 3 20 20 C 1.53014 * 109.46062 * 59.85519 * 19 2 1 21 21 C 1.52959 * 109.42668 * 59.80721 * 20 19 2 22 22 C 1.52963 * 109.81800 * 300.29400 * 21 20 19 23 23 C 1.52991 * 109.46581 * 240.01795 * 2 1 3 24 24 O 1.43710 * 109.40263 * 60.39422 * 21 20 19 25 25 C 1.44787 * 104.79545 * 95.49549 * 24 21 20 26 26 C 1.54922 * 101.72167 * 36.06825 * 25 24 21 27 27 O 1.43297 * 109.65665 * 179.71176 * 21 20 19 28 28 H 1.09000 * 109.47181 * 60.00282 * 1 2 3 29 29 H 1.09001 * 109.46529 * 180.02562 * 1 2 3 30 30 H 1.08998 * 109.46956 * 300.00077 * 1 2 3 31 31 H 1.09009 * 109.47054 * 299.99983 * 3 2 1 32 32 H 1.08998 * 109.47782 * 180.02562 * 3 2 1 33 33 H 0.97000 * 119.99456 * 0.02562 * 4 3 2 34 34 H 0.97000 * 119.99736 * 0.26819 * 7 5 4 35 35 H 1.08998 * 109.46968 * 299.99782 * 8 7 5 36 36 H 1.08997 * 109.47198 * 59.99605 * 8 7 5 37 37 H 1.09007 * 109.46621 * 299.99773 * 9 8 7 38 38 H 1.08997 * 109.46991 * 59.99522 * 9 8 7 39 39 H 1.08998 * 109.46983 * 299.99930 * 10 9 8 40 40 H 1.08997 * 109.47123 * 59.99717 * 10 9 8 41 41 H 0.96990 * 120.00229 * 180.02562 * 14 13 11 42 42 H 1.08997 * 109.47363 * 179.86332 * 19 2 1 43 43 H 1.08999 * 109.46985 * 299.87338 * 19 2 1 44 44 H 1.09000 * 109.49146 * 299.81779 * 20 19 2 45 45 H 1.09005 * 109.48160 * 179.79291 * 20 19 2 46 46 H 1.08999 * 109.47580 * 299.70109 * 22 21 20 47 47 H 1.08996 * 109.48210 * 179.67869 * 22 21 20 48 48 H 1.09001 * 109.47204 * 60.12656 * 23 2 1 49 49 H 1.09005 * 109.47242 * 180.12850 * 23 2 1 50 50 H 1.08998 * 110.98012 * 277.96857 * 25 24 21 51 51 H 1.08997 * 111.01103 * 154.18822 * 25 24 21 52 52 H 1.08999 * 110.69446 * 206.08106 * 26 25 24 53 53 H 1.08999 * 110.84296 * 82.94850 * 26 25 24 Note: An asterisk (*) indicates this parameter was or will be optimized. Cartesian coordinates (angstroms) NO. Atom X Y Z 1 6 0.0000 0.0000 0.0000 2 6 1.5300 0.0000 0.0000 3 6 2.0398 1.4425 0.0000 4 7 1.5514 2.1332 1.1961 5 6 1.8764 3.4237 1.4091 6 8 2.5754 4.0147 0.6087 7 7 1.4225 4.0606 2.5067 8 6 1.7708 5.4652 2.7352 9 6 1.1325 5.9430 4.0410 10 6 1.4968 7.4097 4.2799 11 6 0.8677 7.8805 5.5658 12 1 0.2676 7.2016 6.1536 13 6 1.0581 9.1779 5.9918 14 7 1.7884 10.0047 5.2758 15 14 0.2788 9.7613 7.5861 16 1 0.7814 8.9360 8.7138 17 1 0.6323 11.1848 7.8179 18 1 -1.1972 9.6270 7.4938 19 6 2.0398 -0.7207 1.2496 20 6 1.5266 -2.1622 1.2517 21 6 2.0302 -2.8834 0.0003 22 6 1.5270 -2.1625 -1.2515 23 6 2.0398 -0.7208 -1.2494 24 8 3.4672 -2.8932 0.0007 25 6 3.8281 -4.1712 0.5777 26 6 2.7168 -5.0942 0.0181 27 8 1.5578 -4.2363 0.0007 28 1 -0.3633 0.5138 -0.8900 29 1 -0.3632 -1.0277 0.0005 30 1 -0.3633 0.5138 0.8900 31 1 1.6764 1.9564 -0.8901 32 1 3.1298 1.4428 -0.0005 33 1 0.9940 1.6616 1.8348 34 1 0.8651 3.5891 3.1454 35 1 2.8542 5.5645 2.8022 36 1 1.4010 6.0705 1.9076 37 1 0.0491 5.8437 3.9735 38 1 1.5020 5.3377 4.8688 39 1 2.5802 7.5086 4.3476 40 1 1.1277 8.0152 3.4522 41 1 1.9227 10.9173 5.5757 42 1 3.1298 -0.7229 1.2485 43 1 1.6783 -0.2052 2.1393 44 1 0.4366 -2.1602 1.2561 45 1 1.8927 -2.6771 2.1400 46 1 0.4370 -2.1606 -1.2563 47 1 1.8935 -2.6774 -2.1395 48 1 1.6783 -0.2054 -2.1392 49 1 3.1299 -0.7229 -1.2484 50 1 3.7913 -4.1322 1.6664 51 1 4.8114 -4.4917 0.2336 52 1 2.5552 -5.9464 0.6782 53 1 2.9624 -5.4302 -0.9893 RHF calculation, no. of doubly occupied orbitals= 66 REFERENCES FOR PARAMETERS IN GAS-PHASE HAMILTONIAN: H: (AM1): M.J.S. DEWAR ET AL, J. AM. CHEM. SOC. 107 3902-3909 (1985) C: (AM1): M.J.S. DEWAR ET AL, J. AM. CHEM. SOC. 107 3902-3909 (1985) N: (AM1): M.J.S. DEWAR ET AL, J. AM. CHEM. SOC. 107 3902-3909 (1985) O: (AM1): M.J.S. DEWAR ET AL, J. AM. CHEM. SOC. 107 3902-3909 (1985) Si: (AM1): M.J.S.DEWAR, C. JIE, ORGANOMETALLICS, 6, 1486-1490 (1987). REFERENCE FOR CHARGE MODEL 2: J. Li, J. Xing, C. J. Cramer, and D. G. Truhlar, J. Chem. Phys. 111 (1999) 885. REFERENCE FOR THE PARAMETERIZATION OF THE SM5.42R SOLVATION MODEL: J. Li, T. Zhu, G. D. Hawkins, P. Winget, D. A. Liotard, C. J. Cramer, and D. G. Truhlar, Theor. Chem. Acc. 103 (1999) 9-63 P. Winget, J. D. Thompson C. J. Cramer,and D. G. Truhlar, J. Phys. Chem. B. submitted. CHARGE=-1 AM1 1SCF TLIMIT=15 GEO-OK SM5.42R & SOLVNT=GENORG IOFR=1.4345 ALPHA=0.00 BETA=0.00 GAMMA=38.93 & DIELEC=2.06 FACARB=0.00 FEHALO=0.00 DEV ZINC000892794032.mol2 53 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED SCF FIELD WAS ACHIEVED Wall clock time and date at job start Sat Apr 11 2020 06:09:51 Heat of formation + Delta-G solvation = -147.267735 kcal Electronic energy + Delta-G solvation = -30105.094742 eV Core-core repulsion = 25975.746475 eV Total energy + Delta-G solvation = -4129.348267 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.220 amu Computer time = 0.73 seconds Orbital eigenvalues (eV) -41.51789 -39.95494 -38.64747 -35.51523 -35.40930 -34.43962 -33.26196 -31.90629 -31.40579 -30.90090 -29.11299 -27.53078 -26.62755 -25.16551 -23.82742 -23.31063 -22.86045 -21.37496 -20.75427 -20.29981 -18.91381 -18.11163 -17.62468 -17.04161 -16.54660 -16.01634 -15.96187 -15.71380 -15.48531 -15.04305 -14.78029 -14.50962 -14.33302 -14.18119 -14.04356 -13.84179 -13.64100 -13.50521 -13.31259 -12.86834 -12.66729 -12.39380 -12.27723 -12.25008 -12.22029 -11.78554 -11.70172 -11.59368 -11.56906 -10.95839 -10.86798 -10.82907 -10.70547 -10.68776 -10.62860 -10.59840 -10.04460 -9.82833 -9.82438 -9.41032 -9.11382 -9.11267 -8.52992 -8.34846 -5.99552 -4.02723 2.88032 2.91596 3.33229 3.37996 3.39893 3.44843 3.45964 4.03690 4.14396 4.21074 4.30251 4.38130 4.43271 4.48442 4.51644 4.67012 4.70151 4.88075 4.90683 4.91560 5.04450 5.05806 5.21040 5.26224 5.27741 5.35950 5.39501 5.48012 5.55393 5.56822 5.58767 5.68826 5.75177 5.76363 5.80065 5.84923 5.85796 5.97938 6.12004 6.22552 6.52265 6.58151 6.65374 6.66202 6.85567 7.06046 7.13475 7.66129 7.79580 7.99380 8.21735 8.40331 8.82935 9.03762 9.61191 11.11648 Molecular weight = 340.22amu Principal moments of inertia in cm(-1) A = 0.025770 B = 0.001604 C = 0.001569 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1086.269712 B =17450.607056 C =17843.371695 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.148 4.148 2 C -0.073 4.073 3 C 0.152 3.848 4 N -0.749 5.749 5 C 0.699 3.301 6 O -0.594 6.594 7 N -0.743 5.743 8 C 0.135 3.865 9 C -0.120 4.120 10 C 0.024 3.976 11 C -0.523 4.523 12 H 0.055 0.945 13 C 0.057 3.943 14 N -0.893 5.893 15 Si 0.893 3.107 16 H -0.277 1.277 17 H -0.287 1.287 18 H -0.277 1.277 19 C -0.102 4.102 20 C -0.137 4.137 21 C 0.258 3.742 22 C -0.118 4.118 23 C -0.101 4.101 24 O -0.364 6.364 25 C 0.014 3.986 26 C 0.020 3.980 27 O -0.380 6.380 28 H 0.060 0.940 29 H 0.062 0.938 30 H 0.056 0.944 31 H 0.066 0.934 32 H 0.066 0.934 33 H 0.393 0.607 34 H 0.393 0.607 35 H 0.062 0.938 36 H 0.061 0.939 37 H 0.053 0.947 38 H 0.053 0.947 39 H 0.019 0.981 40 H 0.019 0.981 41 H 0.261 0.739 42 H 0.075 0.925 43 H 0.068 0.932 44 H 0.083 0.917 45 H 0.068 0.932 46 H 0.085 0.915 47 H 0.073 0.927 48 H 0.073 0.927 49 H 0.076 0.924 50 H 0.075 0.925 51 H 0.108 0.892 52 H 0.098 0.902 53 H 0.075 0.925 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -0.072 -34.172 -12.563 36.408 Note: The Mulliken population analysis charges presented below were not used in the solvation calculation but are provided for completeness. The chosen solvation model uses CM2 partial charges for calculating solvation energies. Net atomic charges, atomic populations, and dipole contributions using Mulliken population analysis Atom NO. Type Charge No. of electrons 1 C -0.205 4.205 2 C -0.073 4.073 3 C 0.027 3.973 4 N -0.407 5.407 5 C 0.399 3.601 6 O -0.472 6.472 7 N -0.397 5.397 8 C 0.012 3.988 9 C -0.158 4.158 10 C -0.014 4.014 11 C -0.561 4.561 12 H 0.073 0.927 13 C -0.145 4.145 14 N -0.532 5.532 15 Si 0.721 3.279 16 H -0.203 1.203 17 H -0.213 1.213 18 H -0.203 1.203 19 C -0.140 4.140 20 C -0.174 4.174 21 C 0.181 3.819 22 C -0.156 4.156 23 C -0.139 4.139 24 O -0.284 6.284 25 C -0.063 4.063 26 C -0.056 4.056 27 O -0.301 6.301 28 H 0.079 0.921 29 H 0.081 0.919 30 H 0.075 0.925 31 H 0.084 0.916 32 H 0.084 0.916 33 H 0.227 0.773 34 H 0.226 0.774 35 H 0.080 0.920 36 H 0.080 0.920 37 H 0.072 0.928 38 H 0.072 0.928 39 H 0.038 0.962 40 H 0.038 0.962 41 H 0.071 0.929 42 H 0.093 0.907 43 H 0.087 0.913 44 H 0.101 0.899 45 H 0.087 0.913 46 H 0.103 0.897 47 H 0.092 0.908 48 H 0.091 0.909 49 H 0.094 0.906 50 H 0.093 0.907 51 H 0.126 0.874 52 H 0.116 0.884 53 H 0.094 0.906 Dipole moment (debyes) X Y Z Total from point charges 0.583 -33.278 -13.402 35.880 hybrid contribution -0.815 -0.234 1.639 1.846 sum -0.232 -33.512 -11.762 35.517 Atomic orbital electron populations 1.22008 0.94034 1.02081 1.02374 1.20826 0.96272 0.94174 0.96063 1.21142 0.98972 0.89870 0.87304 1.45156 1.57468 1.11210 1.26824 1.16027 0.80564 0.81171 0.82370 1.90919 1.42787 1.66483 1.47022 1.45381 1.55994 1.14160 1.24176 1.21493 1.00144 0.78190 0.98962 1.21887 0.99424 1.00801 0.93698 1.19027 0.97189 0.88240 0.96940 1.21170 1.31572 0.96439 1.06939 0.92723 1.25027 0.95332 0.96897 0.97197 1.69955 1.39041 1.05859 1.38377 0.86643 0.79700 0.77672 0.83862 1.20282 1.21277 1.20279 1.21511 1.01776 0.93511 0.97199 1.22136 1.02190 0.96293 0.96825 1.23368 0.79402 0.83280 0.95812 1.21846 1.01803 0.95747 0.96176 1.21445 1.01792 0.93697 0.97015 1.89290 1.20358 1.36089 1.82686 1.24370 0.99995 0.82721 0.99193 1.24181 0.84894 0.94518 1.02020 1.88889 1.29825 1.15892 1.95538 0.92121 0.91880 0.92461 0.91606 0.91616 0.77279 0.77443 0.92011 0.92012 0.92805 0.92815 0.96235 0.96237 0.92888 0.90672 0.91344 0.89878 0.91321 0.89670 0.90840 0.90873 0.90557 0.90680 0.87380 0.88385 0.90637 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 12. Note: The number of geometries may not correspond to the number of cycles due to rejected geometry changes. In the following table subtotal= G_P + SS G_CDS. Atom Chem. CM2 G_P Area Sigma k SS G_CDS Subtotal M number symbol chg. (kcal) (Ang**2) cal/(Ang**2) (kcal) (kcal) value 1 C -0.15 -0.95 7.60 37.16 0.28 -0.67 16 2 C -0.07 -0.52 0.52 -154.52 -0.08 -0.60 16 3 C 0.15 1.52 4.56 -4.04 -0.02 1.50 16 4 N -0.75 -8.21 4.96 -65.22 -0.32 -8.53 16 5 C 0.70 10.94 8.57 -86.92 -0.74 10.19 16 6 O -0.59 -12.00 16.34 5.28 0.09 -11.92 16 7 N -0.74 -11.03 5.56 -65.22 -0.36 -11.40 16 8 C 0.14 2.47 5.67 -4.04 -0.02 2.45 16 9 C -0.12 -2.38 5.27 -26.73 -0.14 -2.52 16 10 C 0.02 0.61 4.97 -27.88 -0.14 0.47 16 11 C -0.52 -14.71 9.11 -34.44 -0.31 -15.02 16 12 H 0.05 1.47 7.74 -52.49 -0.41 1.07 16 13 C 0.06 1.63 5.46 -17.82 -0.10 1.54 16 14 N -0.89 -26.96 13.29 55.43 0.74 -26.23 16 15 Si 0.89 21.59 29.54 -169.99 -5.02 16.57 16 16 H -0.28 -6.56 7.11 56.52 0.40 -6.16 16 17 H -0.29 -6.88 7.11 56.52 0.40 -6.48 16 18 H -0.28 -6.56 7.11 56.52 0.40 -6.16 16 19 C -0.10 -0.73 4.42 -26.72 -0.12 -0.85 16 20 C -0.14 -0.94 5.00 -26.74 -0.13 -1.08 16 21 C 0.26 1.94 1.03 -26.77 -0.03 1.91 16 22 C -0.12 -0.81 5.05 -26.74 -0.14 -0.95 16 23 C -0.10 -0.71 4.59 -26.73 -0.12 -0.83 16 24 O -0.36 -2.92 9.66 -59.04 -0.57 -3.49 16 25 C 0.01 0.07 7.91 38.17 0.30 0.37 16 26 C 0.02 0.10 8.07 38.17 0.31 0.41 16 27 O -0.38 -3.05 10.87 -59.04 -0.64 -3.69 16 28 H 0.06 0.41 8.14 -51.93 -0.42 -0.02 16 29 H 0.06 0.37 4.81 -51.93 -0.25 0.12 16 30 H 0.06 0.36 6.86 -51.93 -0.36 0.01 16 31 H 0.07 0.72 8.14 -51.92 -0.42 0.30 16 32 H 0.07 0.75 8.14 -51.93 -0.42 0.32 16 33 H 0.39 3.26 6.17 -40.82 -0.25 3.01 16 34 H 0.39 4.63 8.49 -40.82 -0.35 4.28 16 35 H 0.06 1.20 8.14 -51.93 -0.42 0.78 16 36 H 0.06 1.20 8.14 -51.93 -0.42 0.78 16 37 H 0.05 1.02 8.14 -51.93 -0.42 0.60 16 38 H 0.05 1.02 8.14 -51.93 -0.42 0.60 16 39 H 0.02 0.53 8.14 -51.93 -0.42 0.11 16 40 H 0.02 0.53 8.14 -51.93 -0.42 0.11 16 41 H 0.26 7.46 8.31 -40.82 -0.34 7.12 16 42 H 0.07 0.64 7.69 -51.93 -0.40 0.24 16 43 H 0.07 0.46 6.85 -51.93 -0.36 0.11 16 44 H 0.08 0.54 6.44 -51.93 -0.33 0.21 16 45 H 0.07 0.47 8.14 -51.93 -0.42 0.05 16 46 H 0.08 0.54 6.44 -51.93 -0.33 0.21 16 47 H 0.07 0.51 8.14 -51.93 -0.42 0.08 16 48 H 0.07 0.47 8.14 -51.93 -0.42 0.04 16 49 H 0.08 0.61 7.69 -51.93 -0.40 0.21 16 50 H 0.08 0.34 8.14 -51.93 -0.42 -0.09 16 51 H 0.11 0.35 8.14 -51.93 -0.42 -0.07 16 52 H 0.10 0.31 8.14 -51.93 -0.42 -0.11 16 53 H 0.08 0.32 8.14 -51.93 -0.42 -0.10 16 LS Contribution 407.13 15.07 6.14 6.14 Total: -1.00 -34.57 407.13 -10.50 -45.07 By element: Atomic # 1 Polarization: 10.49 SS G_CDS: -9.33 Total: 1.16 kcal Atomic # 6 Polarization: -2.48 SS G_CDS: -1.20 Total: -3.68 kcal Atomic # 7 Polarization: -46.21 SS G_CDS: 0.05 Total: -46.16 kcal Atomic # 8 Polarization: -17.97 SS G_CDS: -1.13 Total: -19.10 kcal Atomic # 14 Polarization: 21.59 SS G_CDS: -5.02 Total: 16.57 kcal Total LS contribution 6.14 Total: 6.14 kcal Total: -34.57 -10.50 -45.07 kcal The number of atoms in the molecule is 53 The average number of expansion shells was 16.00 The maximum number of expansion shells was 16 The minimum number of expansion shells was 16 **** NOTA BENE **** This is the net solvation energy for this exact molecular structure (nuclear and electronic)! The standard-state solvation energy should be obtained as the difference between the heat of formation plus delta-G solvation for the relaxed solvated system and that for the relaxed gas-phase system. ZINC000892794032.mol2 53 1SCF run This is a breakdown of the solvation energy calculated without geometric relaxation in solution: (1) E-EN(sol) electronic-nuclear energy of solute -102.201 kcal (2) G-P(sol) polarization free energy of solvation -34.570 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -136.771 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -10.497 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -45.067 kcal (6) G-S(sol) free energy of system = (1) + (5) -147.268 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.73 seconds