Wall clock time and date at job start Sat Apr 11 2020 06:11:06 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 1.53005 * 1 3 3 C 1.52999 * 109.47060 * 2 1 4 4 C 1.52997 * 109.47232 * 120.00566 * 2 1 3 5 5 C 1.53003 * 109.47345 * 175.00107 * 4 2 1 6 6 C 1.52993 * 109.47125 * 179.97438 * 5 4 2 7 7 C 1.53003 * 109.47125 * 180.02562 * 6 5 4 8 8 H 1.08999 * 109.46794 * 304.99797 * 7 6 5 9 9 C 1.52998 * 109.46941 * 185.00066 * 7 6 5 10 10 N 1.46498 * 109.47101 * 64.99777 * 7 6 5 11 11 C 1.34775 * 119.99424 * 204.72514 * 10 7 6 12 12 O 1.21347 * 120.00510 * 0.27912 * 11 10 7 13 13 C 1.49457 * 119.99625 * 180.27417 * 11 10 7 14 14 O 1.21347 * 119.99864 * 0.02562 * 13 11 10 15 15 N 1.34770 * 119.99962 * 180.02562 * 13 11 10 16 16 C 1.47022 * 125.65043 * 359.69666 * 15 13 11 17 17 C 1.54339 * 107.26761 * 178.84936 * 16 15 13 18 18 C 1.55154 * 103.01927 * 338.13711 * 17 16 15 19 19 O 1.42897 * 111.00402 * 277.23473 * 18 17 16 20 20 C 1.50702 * 111.03592 * 153.39496 * 18 17 16 21 21 H 1.08000 * 120.00079 * 272.60556 * 20 18 17 22 22 C 1.37874 * 119.99745 * 92.61344 * 20 18 17 23 23 N 1.31514 * 119.99603 * 173.52200 * 22 20 18 24 24 Si 1.86801 * 120.00105 * 353.51524 * 22 20 18 25 25 H 1.48496 * 109.47014 * 87.32619 * 24 22 20 26 26 H 1.48504 * 109.46964 * 207.32422 * 24 22 20 27 27 H 1.48501 * 109.47019 * 327.32516 * 24 22 20 28 28 C 1.47429 * 125.64732 * 180.02562 * 15 13 11 29 29 H 1.08996 * 109.47260 * 299.99653 * 1 2 3 30 30 H 1.09000 * 109.47332 * 60.00080 * 1 2 3 31 31 H 1.08998 * 109.47030 * 179.97438 * 1 2 3 32 32 H 1.09002 * 109.46604 * 240.00212 * 2 1 3 33 33 H 1.08999 * 109.46728 * 180.02562 * 3 2 1 34 34 H 1.09000 * 109.46983 * 300.00134 * 3 2 1 35 35 H 1.08996 * 109.46801 * 60.00065 * 3 2 1 36 36 H 1.08995 * 109.47323 * 54.99415 * 4 2 1 37 37 H 1.09004 * 109.46958 * 294.99689 * 4 2 1 38 38 H 1.09000 * 109.47003 * 59.99471 * 5 4 2 39 39 H 1.09004 * 109.46752 * 299.99709 * 5 4 2 40 40 H 1.09000 * 109.47396 * 59.99976 * 6 5 4 41 41 H 1.09004 * 109.47284 * 299.99648 * 6 5 4 42 42 H 1.08999 * 109.47481 * 60.00180 * 9 7 6 43 43 H 1.09004 * 109.46634 * 179.97438 * 9 7 6 44 44 H 1.08999 * 109.47157 * 299.99508 * 9 7 6 45 45 H 0.96991 * 120.00308 * 25.00115 * 10 7 6 46 46 H 1.08998 * 109.87898 * 298.39192 * 16 15 13 47 47 H 1.08993 * 109.88423 * 59.55639 * 16 15 13 48 48 H 1.08996 * 110.84854 * 219.66646 * 17 16 15 49 49 H 1.09007 * 110.66574 * 96.52086 * 17 16 15 50 50 H 0.96702 * 113.99584 * 168.40157 * 19 18 17 51 51 H 0.97005 * 119.99381 * 180.02562 * 23 22 20 52 52 H 1.08997 * 110.36616 * 322.93234 * 28 15 13 53 53 H 1.08998 * 110.36434 * 85.14859 * 28 15 13 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 2.0400 1.4425 0.0000 4 6 2.0401 -0.7214 1.2491 5 6 3.5649 -0.8311 1.1879 6 6 4.0749 -1.5519 2.4373 7 6 5.5998 -1.6611 2.3764 8 1 5.8924 -2.1460 1.4450 9 6 6.0995 -2.4896 3.5616 10 7 6.1881 -0.3207 2.4349 11 6 7.4116 -0.0986 1.9149 12 8 8.0237 -1.0077 1.3939 13 6 8.0144 1.2674 1.9800 14 8 7.4024 2.1764 2.5014 15 7 9.2375 1.4897 1.4597 16 6 10.0875 0.4825 0.8080 17 6 11.3749 1.1984 0.3472 18 6 10.9390 2.6854 0.2689 19 8 10.2835 2.9624 -0.9702 20 6 12.1153 3.6053 0.4719 21 1 12.4023 3.9027 1.4697 22 6 12.8250 4.0672 -0.6161 23 7 13.7690 4.9679 -0.4512 24 14 12.4459 3.4135 -2.3245 25 1 11.3583 4.2207 -2.9332 26 1 13.6629 3.5046 -3.1707 27 1 12.0153 1.9956 -2.2276 28 6 9.9478 2.7817 1.4558 29 1 -0.3633 0.5138 0.8900 30 1 -0.3634 0.5138 -0.8900 31 1 -0.3633 -1.0276 -0.0005 32 1 1.8933 -0.5138 -0.8900 33 1 3.1300 1.4424 -0.0005 34 1 1.6767 1.9563 -0.8900 35 1 1.6767 1.9562 0.8900 36 1 1.6054 -1.7198 1.2950 37 1 1.7517 -0.1584 2.1369 38 1 3.9995 0.1674 1.1420 39 1 3.8533 -1.3940 0.3001 40 1 3.6404 -2.5505 2.4836 41 1 3.7866 -0.9886 3.3249 42 1 5.6619 -3.4869 3.5180 43 1 7.1859 -2.5678 3.5179 44 1 5.8070 -2.0047 4.4929 45 1 5.6989 0.4059 2.8513 46 1 10.3341 -0.3085 1.5162 47 1 9.5700 0.0627 -0.0544 48 1 11.6906 0.8369 -0.6314 49 1 12.1710 1.0679 1.0802 50 1 9.8389 3.8207 -0.9966 51 1 14.2681 5.2931 -1.2168 52 1 9.2454 3.6001 1.2980 53 1 10.4872 2.9208 2.3926 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 ZINC001118204968.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 06:11:06 Heat of formation + Delta-G solvation = -143.934030 kcal Electronic energy + Delta-G solvation = -30782.101020 eV Core-core repulsion = 26652.897313 eV Total energy + Delta-G solvation = -4129.203707 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.220 amu Computer time = 1.93 seconds Orbital eigenvalues (eV) -40.62684 -39.03428 -37.76439 -37.48966 -36.18443 -34.79122 -32.63253 -32.39270 -30.65651 -30.45464 -28.46784 -27.47649 -26.73666 -26.10931 -24.09765 -22.59300 -21.99490 -20.93388 -20.20933 -20.01427 -19.70417 -17.66161 -17.41786 -16.91154 -16.08151 -15.95206 -15.64397 -15.21781 -14.85804 -14.80635 -14.69546 -14.43422 -14.24189 -13.91280 -13.66082 -13.54899 -13.28518 -12.92690 -12.69030 -12.57758 -12.55716 -12.45749 -12.27711 -12.02682 -11.95744 -11.78727 -11.74183 -11.57431 -11.48043 -11.26591 -11.11669 -10.98377 -10.91027 -10.74027 -10.61689 -10.49797 -10.36584 -10.25192 -9.35228 -9.28262 -9.25531 -8.70968 -8.55101 -8.23159 -6.21364 -4.33840 1.62153 2.47397 3.40753 3.45495 3.52337 3.67344 3.71347 4.18754 4.48378 4.49473 4.52730 4.54866 4.66987 4.77269 4.83131 5.00481 5.04151 5.13359 5.19873 5.27276 5.28113 5.33763 5.36957 5.37941 5.45736 5.48296 5.56823 5.58896 5.64232 5.70635 5.71416 5.75394 5.84397 5.88182 5.91154 5.96133 5.98590 6.09402 6.11678 6.12758 6.27024 6.34922 6.45579 6.64254 6.76294 7.02335 7.12720 7.41693 7.65357 7.84189 8.09522 8.20625 8.58423 8.78398 9.39844 10.87236 Molecular weight = 340.22amu Principal moments of inertia in cm(-1) A = 0.014167 B = 0.002548 C = 0.002314 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1976.014284 B =10985.141145 C =12095.358095 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.147 4.147 2 C -0.099 4.099 3 C -0.151 4.151 4 C -0.113 4.113 5 C -0.125 4.125 6 C -0.126 4.126 7 C 0.140 3.860 8 H 0.091 0.909 9 C -0.165 4.165 10 N -0.700 5.700 11 C 0.511 3.489 12 O -0.514 6.514 13 C 0.511 3.489 14 O -0.539 6.539 15 N -0.575 5.575 16 C 0.108 3.892 17 C -0.126 4.126 18 C 0.220 3.780 19 O -0.558 6.558 20 C -0.552 4.552 21 H 0.082 0.918 22 C 0.075 3.925 23 N -0.886 5.886 24 Si 0.950 3.050 25 H -0.293 1.293 26 H -0.326 1.326 27 H -0.268 1.268 28 C 0.086 3.914 29 H 0.053 0.947 30 H 0.053 0.947 31 H 0.052 0.948 32 H 0.068 0.932 33 H 0.059 0.941 34 H 0.052 0.948 35 H 0.054 0.946 36 H 0.060 0.940 37 H 0.062 0.938 38 H 0.069 0.931 39 H 0.063 0.937 40 H 0.079 0.921 41 H 0.070 0.930 42 H 0.067 0.933 43 H 0.062 0.938 44 H 0.058 0.942 45 H 0.410 0.590 46 H 0.068 0.932 47 H 0.072 0.928 48 H 0.082 0.918 49 H 0.086 0.914 50 H 0.371 0.629 51 H 0.267 0.733 52 H 0.075 0.925 53 H 0.079 0.921 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -22.754 -13.586 4.733 26.921 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 -0.117 4.117 3 C -0.208 4.208 4 C -0.151 4.151 5 C -0.163 4.163 6 C -0.164 4.164 7 C 0.036 3.964 8 H 0.109 0.891 9 C -0.223 4.223 10 N -0.355 5.355 11 C 0.292 3.708 12 O -0.389 6.389 13 C 0.293 3.707 14 O -0.418 6.418 15 N -0.307 5.307 16 C -0.014 4.014 17 C -0.164 4.164 18 C 0.179 3.821 19 O -0.366 6.366 20 C -0.590 4.590 21 H 0.100 0.900 22 C -0.130 4.130 23 N -0.521 5.521 24 Si 0.786 3.214 25 H -0.220 1.220 26 H -0.257 1.257 27 H -0.194 1.194 28 C -0.035 4.035 29 H 0.072 0.928 30 H 0.072 0.928 31 H 0.071 0.929 32 H 0.087 0.913 33 H 0.078 0.922 34 H 0.071 0.929 35 H 0.073 0.927 36 H 0.079 0.921 37 H 0.080 0.920 38 H 0.087 0.913 39 H 0.082 0.918 40 H 0.098 0.902 41 H 0.088 0.912 42 H 0.085 0.915 43 H 0.081 0.919 44 H 0.077 0.923 45 H 0.246 0.754 46 H 0.086 0.914 47 H 0.090 0.910 48 H 0.100 0.900 49 H 0.104 0.896 50 H 0.219 0.781 51 H 0.076 0.924 52 H 0.093 0.907 53 H 0.098 0.902 Dipole moment (debyes) X Y Z Total from point charges -22.323 -14.264 4.454 26.863 hybrid contribution -0.521 0.637 -0.460 0.943 sum -22.844 -13.627 3.994 26.898 Atomic orbital electron populations 1.21844 0.95417 1.01492 1.01718 1.21134 0.95505 0.96635 0.98460 1.21904 1.01525 0.95734 1.01659 1.21645 0.95284 1.00292 0.97854 1.21700 0.95505 1.01368 0.97697 1.21917 0.93434 1.01976 0.99071 1.21089 0.92591 0.82525 1.00208 0.89093 1.22191 1.02391 0.99786 0.97933 1.45851 1.17660 1.12563 1.59406 1.20252 0.82276 0.89240 0.79040 1.90744 1.60613 1.45002 1.42509 1.19670 0.81729 0.88649 0.80647 1.90723 1.61004 1.44958 1.45084 1.48464 1.14951 1.13474 1.53853 1.22266 0.91747 0.90307 0.97081 1.23073 0.95282 0.95708 1.02332 1.20268 0.89514 0.93097 0.79179 1.86141 1.71544 1.41427 1.37438 1.21073 1.12440 1.29550 0.95910 0.89997 1.25108 0.93867 0.93291 1.00744 1.69967 1.22460 1.27652 1.32039 0.85658 0.74136 0.80489 0.81163 1.22050 1.25744 1.19411 1.23333 0.94780 0.83529 1.01862 0.92757 0.92804 0.92873 0.91335 0.92221 0.92889 0.92703 0.92095 0.91952 0.91272 0.91823 0.90205 0.91173 0.91453 0.91851 0.92295 0.75382 0.91410 0.91011 0.89966 0.89566 0.78111 0.92357 0.90664 0.90235 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 13. 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 -0.92 9.19 37.16 0.34 -0.58 16 2 C -0.10 -0.70 2.92 -90.62 -0.26 -0.96 16 3 C -0.15 -1.19 8.95 37.16 0.33 -0.85 16 4 C -0.11 -0.74 4.68 -26.73 -0.13 -0.86 16 5 C -0.13 -0.92 4.86 -26.73 -0.13 -1.05 16 6 C -0.13 -0.83 4.75 -26.73 -0.13 -0.95 16 7 C 0.14 1.26 2.57 -67.93 -0.17 1.08 16 8 H 0.09 0.95 7.58 -51.93 -0.39 0.55 16 9 C -0.16 -1.38 9.48 37.16 0.35 -1.02 16 10 N -0.70 -7.90 4.52 -54.24 -0.25 -8.14 16 11 C 0.51 7.67 7.82 -11.58 -0.09 7.58 16 12 O -0.51 -8.54 13.79 5.50 0.08 -8.46 16 13 C 0.51 8.93 7.91 -11.58 -0.09 8.84 16 14 O -0.54 -10.13 16.73 5.50 0.09 -10.04 16 15 N -0.58 -10.63 3.33 -171.00 -0.57 -11.20 16 16 C 0.11 1.94 5.49 -3.06 -0.02 1.92 16 17 C -0.13 -2.50 5.90 -24.89 -0.15 -2.64 16 18 C 0.22 4.79 0.70 -89.61 -0.06 4.73 16 19 O -0.56 -12.04 8.52 -35.23 -0.30 -12.34 16 20 C -0.55 -14.33 8.89 -34.44 -0.31 -14.63 16 21 H 0.08 2.30 8.00 -52.49 -0.42 1.88 16 22 C 0.08 2.06 5.46 -17.82 -0.10 1.96 16 23 N -0.89 -25.93 13.96 55.43 0.77 -25.15 16 24 Si 0.95 23.18 24.93 -169.99 -4.24 18.94 16 25 H -0.29 -7.04 7.11 56.52 0.40 -6.64 16 26 H -0.33 -8.18 7.11 56.52 0.40 -7.78 16 27 H -0.27 -6.43 5.42 56.52 0.31 -6.12 16 28 C 0.09 1.71 6.07 -2.51 -0.02 1.69 16 29 H 0.05 0.33 8.14 -51.93 -0.42 -0.09 16 30 H 0.05 0.33 8.14 -51.93 -0.42 -0.09 16 31 H 0.05 0.30 8.14 -51.93 -0.42 -0.12 16 32 H 0.07 0.51 8.14 -51.93 -0.42 0.09 16 33 H 0.06 0.52 6.57 -51.93 -0.34 0.18 16 34 H 0.05 0.40 8.14 -51.93 -0.42 -0.02 16 35 H 0.05 0.42 8.14 -51.93 -0.42 -0.01 16 36 H 0.06 0.36 8.14 -51.93 -0.42 -0.06 16 37 H 0.06 0.40 8.14 -51.93 -0.42 -0.02 16 38 H 0.07 0.60 6.17 -51.93 -0.32 0.28 16 39 H 0.06 0.51 8.14 -51.93 -0.42 0.08 16 40 H 0.08 0.43 8.14 -51.93 -0.42 0.01 16 41 H 0.07 0.42 8.14 -51.93 -0.42 0.00 16 42 H 0.07 0.45 8.14 -51.93 -0.42 0.02 16 43 H 0.06 0.66 8.14 -51.93 -0.42 0.24 16 44 H 0.06 0.45 8.14 -51.93 -0.42 0.03 16 45 H 0.41 4.26 8.07 -40.82 -0.33 3.93 16 46 H 0.07 1.13 7.71 -51.93 -0.40 0.73 16 47 H 0.07 1.31 7.57 -51.93 -0.39 0.92 16 48 H 0.08 1.68 6.65 -51.93 -0.35 1.33 16 49 H 0.09 1.66 8.03 -51.92 -0.42 1.24 16 50 H 0.37 7.09 8.99 45.56 0.41 7.50 16 51 H 0.27 7.39 8.31 -40.82 -0.34 7.05 16 52 H 0.07 1.48 8.02 -51.93 -0.42 1.06 16 53 H 0.08 1.58 7.99 -51.93 -0.41 1.17 16 LS Contribution 414.70 15.07 6.25 6.25 Total: -1.00 -30.84 414.70 -7.71 -38.56 By element: Atomic # 1 Polarization: 16.27 SS G_CDS: -8.93 Total: 7.34 kcal Atomic # 6 Polarization: 4.87 SS G_CDS: -0.62 Total: 4.25 kcal Atomic # 7 Polarization: -44.45 SS G_CDS: -0.04 Total: -44.49 kcal Atomic # 8 Polarization: -30.71 SS G_CDS: -0.13 Total: -30.84 kcal Atomic # 14 Polarization: 23.18 SS G_CDS: -4.24 Total: 18.94 kcal Total LS contribution 6.25 Total: 6.25 kcal Total: -30.84 -7.71 -38.56 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. ZINC001118204968.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 -105.376 kcal (2) G-P(sol) polarization free energy of solvation -30.844 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -136.220 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -7.714 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -38.558 kcal (6) G-S(sol) free energy of system = (1) + (5) -143.934 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.93 seconds