Wall clock time and date at job start Tue Mar 31 2020 20:42:09 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 1.30990 * 1 3 3 C 1.50706 * 120.00146 * 2 1 4 4 C 1.53008 * 109.46800 * 125.00287 * 3 2 1 5 5 C 1.50703 * 109.54086 * 299.99787 * 4 3 2 6 6 O 1.21270 * 120.00127 * 239.99939 * 5 4 3 7 7 N 1.34777 * 119.99483 * 60.00551 * 5 4 3 8 8 C 1.46500 * 119.99698 * 179.97438 * 7 5 4 9 9 H 1.09004 * 109.50066 * 34.93101 * 8 7 5 10 10 C 1.53042 * 109.50060 * 155.00316 * 8 7 5 11 11 C 1.53038 * 109.53929 * 181.34962 * 10 8 7 12 12 C 1.53188 * 109.31223 * 298.63155 * 11 10 8 13 13 H 1.09001 * 109.58920 * 294.84466 * 12 11 10 14 14 C 1.53006 * 109.58771 * 174.42416 * 12 11 10 15 15 N 1.46928 * 108.77832 * 54.63568 * 12 11 10 16 16 C 1.36933 * 120.63048 * 126.36506 * 15 12 11 17 17 H 1.07994 * 120.00570 * 331.08341 * 16 15 12 18 18 C 1.38815 * 119.99937 * 150.80872 * 16 15 12 19 19 N 1.31631 * 119.99574 * 345.54674 * 18 16 15 20 20 Si 1.86790 * 120.00356 * 165.54843 * 18 16 15 21 21 H 1.48497 * 109.47195 * 0.02562 * 20 18 16 22 22 H 1.48501 * 109.47179 * 119.99673 * 20 18 16 23 23 H 1.48495 * 109.47277 * 239.99787 * 20 18 16 24 24 C 1.46925 * 118.73541 * 306.64765 * 15 12 11 25 25 C 1.53174 * 109.54215 * 60.17818 * 4 3 2 26 26 C 1.53286 * 109.06080 * 176.84997 * 25 4 3 27 27 O 1.42901 * 109.46102 * 302.44796 * 26 25 4 28 28 C 1.42909 * 114.09814 * 61.15762 * 27 26 25 29 29 C 1.53095 * 109.41204 * 298.83965 * 28 27 26 30 30 H 1.08003 * 120.00405 * 359.97438 * 1 2 3 31 31 H 1.07999 * 120.00519 * 179.97438 * 1 2 3 32 32 H 1.08006 * 119.99963 * 180.02562 * 2 1 3 33 33 H 1.08996 * 109.46810 * 5.00212 * 3 2 1 34 34 H 1.08994 * 109.47079 * 244.99837 * 3 2 1 35 35 H 0.96995 * 120.00419 * 359.97438 * 7 5 4 36 36 H 1.08994 * 109.46398 * 61.32340 * 10 8 7 37 37 H 1.09002 * 109.45473 * 301.36797 * 10 8 7 38 38 H 1.09002 * 109.49750 * 178.67704 * 11 10 8 39 39 H 1.09004 * 109.50106 * 58.58211 * 11 10 8 40 40 H 1.09002 * 109.47056 * 300.70507 * 14 12 11 41 41 H 1.08994 * 109.47055 * 60.71013 * 14 12 11 42 42 H 1.08998 * 109.47016 * 180.71387 * 14 12 11 43 43 H 0.96995 * 119.99476 * 180.02562 * 19 18 16 44 44 H 1.08998 * 109.58351 * 173.14445 * 24 15 12 45 45 H 1.09000 * 109.58296 * 293.56443 * 24 15 12 46 46 H 1.08996 * 109.52354 * 296.84023 * 25 4 3 47 47 H 1.08997 * 109.52484 * 57.03360 * 25 4 3 48 48 H 1.08993 * 109.45679 * 182.44905 * 26 25 4 49 49 H 1.09008 * 109.45853 * 62.44232 * 26 25 4 50 50 H 1.09000 * 109.47786 * 178.85954 * 28 27 26 51 51 H 1.08994 * 109.47910 * 58.82647 * 28 27 26 52 52 H 1.08996 * 109.52210 * 297.70326 * 29 28 27 53 53 H 1.09003 * 109.57115 * 177.54341 * 29 28 27 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 1.3099 0.0000 0.0000 3 6 2.0635 1.3051 0.0000 4 6 3.0351 1.3330 1.1817 5 6 2.2655 1.1983 2.4703 6 8 2.3232 2.0756 3.3056 7 7 1.5132 0.1027 2.6945 8 6 0.7654 -0.0285 3.9474 9 1 0.4123 0.9526 4.2649 10 6 -0.4317 -0.9576 3.7331 11 6 -1.2325 -1.0687 5.0325 12 6 -0.3436 -1.6700 6.1256 13 1 -0.0825 -2.6948 5.8616 14 6 -1.0914 -1.6558 7.4603 15 7 0.8794 -0.8634 6.2376 16 6 1.2680 -0.3495 7.4459 17 1 0.5274 -0.1127 8.1954 18 6 2.6144 -0.1384 7.7097 19 7 3.5298 -0.6832 6.9364 20 14 3.1272 0.9187 9.1618 21 1 1.9169 1.4099 9.8683 22 1 3.9511 0.1102 10.0961 23 1 3.9212 2.0756 8.6760 24 6 1.6740 -0.6134 5.0273 25 6 4.0292 0.1746 1.0550 26 6 5.0449 0.2591 2.2000 27 8 5.7035 1.5266 2.1597 28 6 4.8277 2.6446 2.3199 29 6 3.8050 2.6571 1.1807 30 1 -0.5401 0.9353 0.0004 31 1 -0.5401 -0.9352 -0.0004 32 1 1.8499 -0.9354 -0.0004 33 1 1.3585 2.1316 0.0896 34 1 2.6212 1.4026 -0.9313 35 1 1.4668 -0.5988 2.0263 36 1 -0.0767 -1.9455 3.4396 37 1 -1.0692 -0.5528 2.9471 38 1 -2.0979 -1.7118 4.8726 39 1 -1.5669 -0.0778 5.3397 40 1 -1.3561 -0.6302 7.7176 41 1 -1.9981 -2.2547 7.3752 42 1 -0.4526 -2.0724 8.2391 43 1 4.4706 -0.5360 7.1209 44 1 2.4720 0.0936 5.2538 45 1 2.1030 -1.5503 4.6719 46 1 3.4934 -0.7729 1.1097 47 1 4.5506 0.2447 0.1003 48 1 5.7814 -0.5369 2.0914 49 1 4.5276 0.1484 3.1531 50 1 5.4081 3.5670 2.2976 51 1 4.3077 2.5650 3.2744 52 1 4.3218 2.7773 0.2286 53 1 3.1088 3.4835 1.3241 RHF calculation, no. of doubly occupied orbitals= 65 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 ZINC001132454482.mol2 53 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED SCF FIELD WAS ACHIEVED Wall clock time and date at job start Tue Mar 31 2020 20:42:09 Heat of formation + Delta-G solvation = -49.845303 kcal Electronic energy + Delta-G solvation = -32532.554269 eV Core-core repulsion = 28597.886607 eV Total energy + Delta-G solvation = -3934.667662 eV No. of doubly occupied orbitals = 65 Molecular weight (most abundant/longest-lived isotopes) = 336.220 amu Computer time = 1.28 seconds Orbital eigenvalues (eV) -40.85814 -38.38900 -37.29486 -36.04101 -34.38678 -32.81510 -32.71829 -31.10924 -30.37150 -29.79111 -27.72986 -26.09823 -25.00821 -23.74760 -23.42659 -22.32043 -21.82025 -20.45206 -19.85024 -19.49186 -18.77709 -16.63623 -16.35905 -16.10576 -15.75656 -15.61073 -15.27653 -14.79791 -14.59116 -14.36122 -13.96319 -13.89800 -13.77659 -13.56313 -13.36689 -13.02877 -12.90888 -12.56322 -12.37468 -12.17007 -12.12307 -11.77065 -11.65574 -11.48492 -11.43163 -11.13776 -11.07025 -10.86578 -10.70433 -10.50636 -10.42656 -10.38948 -10.33631 -10.21800 -9.93573 -9.69042 -9.51550 -9.40517 -9.36629 -8.91914 -8.43742 -8.37748 -6.58323 -5.71510 -3.16073 2.07684 3.06497 3.43246 3.51298 3.52514 3.58692 4.11931 4.43768 4.55208 4.68712 4.72932 4.94257 4.98995 5.12634 5.14962 5.36378 5.39237 5.40165 5.45234 5.52266 5.59131 5.60590 5.63498 5.70872 5.75499 5.77681 5.81098 5.88639 5.98613 6.00231 6.11147 6.12914 6.16702 6.27746 6.31186 6.36449 6.40157 6.43337 6.47069 6.55025 6.57191 6.63922 6.78156 7.02706 7.05594 7.13667 7.35338 7.43680 7.76951 7.88314 8.00969 8.52659 8.72343 9.27555 9.91473 10.46608 11.36405 Molecular weight = 336.22amu Principal moments of inertia in cm(-1) A = 0.010834 B = 0.005166 C = 0.003823 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 2583.794344 B = 5418.915313 C = 7321.392373 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.176 4.176 2 C -0.169 4.169 3 C -0.078 4.078 4 C -0.076 4.076 5 C 0.520 3.480 6 O -0.532 6.532 7 N -0.714 5.714 8 C 0.116 3.884 9 H 0.079 0.921 10 C -0.115 4.115 11 C -0.126 4.126 12 C 0.165 3.835 13 H 0.024 0.976 14 C -0.136 4.136 15 N -0.583 5.583 16 C -0.251 4.251 17 H 0.070 0.930 18 C 0.006 3.994 19 N -0.899 5.899 20 Si 0.899 3.101 21 H -0.278 1.278 22 H -0.291 1.291 23 H -0.289 1.289 24 C 0.170 3.830 25 C -0.140 4.140 26 C 0.055 3.945 27 O -0.385 6.385 28 C 0.048 3.952 29 C -0.126 4.126 30 H 0.096 0.904 31 H 0.099 0.901 32 H 0.114 0.886 33 H 0.072 0.928 34 H 0.082 0.918 35 H 0.391 0.609 36 H 0.056 0.944 37 H 0.050 0.950 38 H 0.053 0.947 39 H 0.060 0.940 40 H 0.053 0.947 41 H 0.037 0.963 42 H 0.061 0.939 43 H 0.252 0.748 44 H 0.095 0.905 45 H 0.013 0.987 46 H 0.076 0.924 47 H 0.079 0.921 48 H 0.093 0.907 49 H 0.062 0.938 50 H 0.087 0.913 51 H 0.082 0.918 52 H 0.072 0.928 53 H 0.078 0.922 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -4.164 0.284 -16.429 16.951 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 -0.213 4.213 2 C -0.187 4.187 3 C -0.116 4.116 4 C -0.079 4.079 5 C 0.305 3.695 6 O -0.408 6.408 7 N -0.367 5.367 8 C 0.011 3.989 9 H 0.097 0.903 10 C -0.153 4.153 11 C -0.166 4.166 12 C 0.058 3.942 13 H 0.042 0.958 14 C -0.194 4.194 15 N -0.306 5.306 16 C -0.381 4.381 17 H 0.088 0.912 18 C -0.193 4.193 19 N -0.544 5.544 20 Si 0.729 3.271 21 H -0.203 1.203 22 H -0.218 1.218 23 H -0.215 1.215 24 C 0.043 3.957 25 C -0.178 4.178 26 C -0.022 4.022 27 O -0.304 6.304 28 C -0.029 4.029 29 C -0.164 4.164 30 H 0.114 0.886 31 H 0.118 0.882 32 H 0.131 0.869 33 H 0.091 0.909 34 H 0.100 0.900 35 H 0.228 0.772 36 H 0.074 0.926 37 H 0.069 0.931 38 H 0.072 0.928 39 H 0.079 0.921 40 H 0.072 0.928 41 H 0.056 0.944 42 H 0.080 0.920 43 H 0.062 0.938 44 H 0.113 0.887 45 H 0.031 0.969 46 H 0.095 0.905 47 H 0.098 0.902 48 H 0.112 0.888 49 H 0.080 0.920 50 H 0.105 0.895 51 H 0.100 0.900 52 H 0.090 0.910 53 H 0.097 0.903 Dipole moment (debyes) X Y Z Total from point charges -3.760 0.938 -15.783 16.252 hybrid contribution -0.012 0.054 0.313 0.317 sum -3.772 0.992 -15.470 15.954 Atomic orbital electron populations 1.23890 0.95829 1.02079 0.99543 1.22937 0.96200 0.98524 1.01071 1.20766 0.97543 0.95978 0.97277 1.20915 0.95411 0.97809 0.93775 1.20214 0.79419 0.82178 0.87691 1.90678 1.62934 1.40641 1.46576 1.46346 1.48527 1.21219 1.20562 1.21871 0.92577 1.00118 0.84373 0.90278 1.21657 0.96663 0.99125 0.97829 1.22045 0.97717 1.01218 0.95601 1.20484 0.87647 0.93165 0.92859 0.95833 1.21800 0.98242 1.01030 0.98297 1.44008 1.24562 1.57622 1.04441 1.19176 0.90483 1.35629 0.92808 0.91235 1.25067 0.96330 0.99800 0.98069 1.69999 0.99801 1.44648 1.39922 0.86274 0.78358 0.80269 0.82182 1.20297 1.21826 1.21531 1.20975 0.92952 0.98102 0.83679 1.22314 0.97131 0.97486 1.00863 1.22639 0.95693 0.86107 0.97720 1.87861 1.34488 1.14077 1.93935 1.22832 0.91908 0.88957 0.99170 1.21999 0.98420 0.95911 1.00058 0.88587 0.88232 0.86852 0.90933 0.89968 0.77229 0.92563 0.93138 0.92801 0.92143 0.92827 0.94391 0.92003 0.93829 0.88728 0.96877 0.90520 0.90235 0.88838 0.91966 0.89455 0.90035 0.90956 0.90319 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 17. 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 -0.18 -1.59 13.92 29.02 0.40 -1.19 16 2 C -0.17 -1.56 5.81 -36.02 -0.21 -1.77 16 3 C -0.08 -0.78 4.73 -27.88 -0.13 -0.91 16 4 C -0.08 -0.96 0.51 -155.47 -0.08 -1.04 16 5 C 0.52 8.76 5.08 -10.98 -0.06 8.71 16 6 O -0.53 -11.32 13.51 5.57 0.08 -11.24 16 7 N -0.71 -11.39 4.30 -53.90 -0.23 -11.62 16 8 C 0.12 2.22 2.59 -68.03 -0.18 2.05 16 9 H 0.08 1.75 7.58 -51.93 -0.39 1.36 16 10 C -0.11 -1.83 5.36 -26.69 -0.14 -1.98 16 11 C -0.13 -2.13 5.37 -26.61 -0.14 -2.28 16 12 C 0.17 3.37 3.50 -67.60 -0.24 3.13 16 13 H 0.02 0.50 8.14 -51.93 -0.42 0.08 16 14 C -0.14 -2.56 7.94 37.16 0.30 -2.26 16 15 N -0.58 -14.40 3.00 -165.03 -0.49 -14.90 16 16 C -0.25 -6.87 8.60 -15.06 -0.13 -7.00 16 17 H 0.07 1.86 6.20 -52.49 -0.33 1.54 16 18 C 0.01 0.17 4.97 -17.42 -0.09 0.09 16 19 N -0.90 -26.44 11.14 55.49 0.62 -25.82 16 20 Si 0.90 22.51 29.58 -169.99 -5.03 17.48 16 21 H -0.28 -6.77 7.11 56.52 0.40 -6.36 16 22 H -0.29 -7.28 7.11 56.52 0.40 -6.88 16 23 H -0.29 -7.40 7.11 56.52 0.40 -7.00 16 24 C 0.17 4.05 4.83 -3.93 -0.02 4.03 16 25 C -0.14 -1.66 4.54 -26.49 -0.12 -1.78 16 26 C 0.06 0.83 6.62 37.31 0.25 1.08 16 27 O -0.38 -6.32 10.77 -35.23 -0.38 -6.70 16 28 C 0.05 0.74 6.55 37.21 0.24 0.99 16 29 C -0.13 -1.63 4.56 -26.59 -0.12 -1.75 16 30 H 0.10 0.88 7.84 -52.48 -0.41 0.47 16 31 H 0.10 0.79 8.06 -52.49 -0.42 0.37 16 32 H 0.11 0.93 6.76 -52.48 -0.35 0.57 16 33 H 0.07 0.75 7.79 -51.93 -0.40 0.34 16 34 H 0.08 0.68 8.14 -51.93 -0.42 0.25 16 35 H 0.39 5.20 5.01 -40.82 -0.20 5.00 16 36 H 0.06 0.86 8.14 -51.93 -0.42 0.44 16 37 H 0.05 0.70 8.14 -51.93 -0.42 0.28 16 38 H 0.05 0.77 8.14 -51.93 -0.42 0.35 16 39 H 0.06 1.08 8.14 -51.93 -0.42 0.65 16 40 H 0.05 1.03 7.45 -51.93 -0.39 0.64 16 41 H 0.04 0.58 8.14 -51.93 -0.42 0.16 16 42 H 0.06 1.25 7.62 -51.93 -0.40 0.86 16 43 H 0.25 7.25 8.31 -40.82 -0.34 6.91 16 44 H 0.09 2.67 6.08 -51.93 -0.32 2.36 16 45 H 0.01 0.33 8.14 -51.93 -0.42 -0.09 16 46 H 0.08 0.82 6.08 -51.93 -0.32 0.50 16 47 H 0.08 0.80 8.14 -51.93 -0.42 0.38 16 48 H 0.09 1.24 8.14 -51.93 -0.42 0.82 16 49 H 0.06 1.16 7.38 -51.92 -0.38 0.78 16 50 H 0.09 1.19 8.14 -51.93 -0.42 0.76 16 51 H 0.08 1.57 5.81 -51.93 -0.30 1.26 16 52 H 0.07 0.79 8.14 -51.93 -0.42 0.36 16 53 H 0.08 1.03 8.03 -51.93 -0.42 0.61 16 LS Contribution 392.77 15.07 5.92 5.92 Total: -1.00 -31.73 392.77 -9.22 -40.96 By element: Atomic # 1 Polarization: 17.03 SS G_CDS: -9.24 Total: 7.79 kcal Atomic # 6 Polarization: -1.41 SS G_CDS: -0.46 Total: -1.87 kcal Atomic # 7 Polarization: -52.23 SS G_CDS: -0.11 Total: -52.34 kcal Atomic # 8 Polarization: -17.64 SS G_CDS: -0.30 Total: -17.94 kcal Atomic # 14 Polarization: 22.51 SS G_CDS: -5.03 Total: 17.48 kcal Total LS contribution 5.92 Total: 5.92 kcal Total: -31.73 -9.22 -40.96 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. ZINC001132454482.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 -8.889 kcal (2) G-P(sol) polarization free energy of solvation -31.733 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -40.622 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -9.223 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -40.956 kcal (6) G-S(sol) free energy of system = (1) + (5) -49.845 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.28 seconds