Wall clock time and date at job start Tue Mar 31 2020 23:20:11 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 O 1.45193 * 1 3 3 C 1.34228 * 117.00053 * 2 1 4 4 O 1.20831 * 119.99895 * 359.97438 * 3 2 1 5 5 C 1.50703 * 120.00259 * 180.02562 * 3 2 1 6 6 C 1.53000 * 109.46888 * 179.97438 * 5 3 2 7 7 N 1.46500 * 109.46955 * 179.97438 * 6 5 3 8 8 C 1.36938 * 119.99975 * 272.13925 * 7 6 5 9 9 H 1.08008 * 120.00324 * 8.56581 * 8 7 6 10 10 C 1.38813 * 120.00123 * 188.56401 * 8 7 6 11 11 N 1.31621 * 119.99942 * 24.83020 * 10 8 7 12 12 Si 1.86796 * 120.00291 * 204.82679 * 10 8 7 13 13 H 1.48500 * 109.47362 * 59.99940 * 12 10 8 14 14 H 1.48499 * 109.47530 * 180.02562 * 12 10 8 15 15 H 1.48507 * 109.47275 * 300.00257 * 12 10 8 16 16 C 1.46492 * 120.00058 * 92.13726 * 7 6 5 17 17 C 1.50696 * 109.47323 * 90.00283 * 16 7 6 18 18 O 1.21283 * 119.99872 * 359.97438 * 17 16 7 19 19 N 1.34781 * 120.00307 * 179.97438 * 17 16 7 20 20 C 1.46501 * 119.99949 * 359.97438 * 19 17 16 21 21 C 1.46499 * 119.99841 * 179.97438 * 19 17 16 22 22 H 1.08996 * 109.47417 * 359.97438 * 21 19 17 23 23 C 1.53003 * 109.46938 * 120.00353 * 21 19 17 24 24 C 1.53006 * 109.47057 * 179.97438 * 23 21 19 25 25 C 1.53005 * 109.46970 * 299.99919 * 24 23 21 26 26 C 1.53001 * 109.47424 * 59.99872 * 25 24 23 27 27 C 1.52997 * 109.46981 * 239.99960 * 21 19 17 28 28 H 1.09003 * 109.47382 * 300.00201 * 27 21 19 29 29 C 1.53001 * 109.47224 * 60.00134 * 27 21 19 30 30 H 1.08995 * 109.47211 * 60.00223 * 1 2 3 31 31 H 1.09008 * 109.46957 * 180.02562 * 1 2 3 32 32 H 1.09005 * 109.47570 * 299.99952 * 1 2 3 33 33 H 1.08999 * 109.46698 * 59.99803 * 5 3 2 34 34 H 1.08995 * 109.46958 * 299.99595 * 5 3 2 35 35 H 1.09000 * 109.47333 * 59.99979 * 6 5 3 36 36 H 1.08995 * 109.47266 * 299.99744 * 6 5 3 37 37 H 0.96995 * 120.00206 * 179.97438 * 11 10 8 38 38 H 1.08998 * 109.47374 * 329.99868 * 16 7 6 39 39 H 1.09004 * 109.47126 * 209.99934 * 16 7 6 40 40 H 1.08993 * 109.47006 * 270.00181 * 20 19 17 41 41 H 1.09004 * 109.46946 * 29.99867 * 20 19 17 42 42 H 1.09001 * 109.46988 * 149.99706 * 20 19 17 43 43 H 1.08993 * 109.47308 * 59.99768 * 23 21 19 44 44 H 1.08997 * 109.46778 * 299.99130 * 23 21 19 45 45 H 1.08996 * 109.47100 * 179.97438 * 24 23 21 46 46 H 1.09005 * 109.47234 * 59.99365 * 24 23 21 47 47 H 1.08990 * 109.47069 * 180.02562 * 25 24 23 48 48 H 1.09005 * 109.46691 * 299.99780 * 25 24 23 49 49 H 1.09003 * 109.46887 * 59.99897 * 26 25 24 50 50 H 1.08991 * 109.47259 * 180.02562 * 26 25 24 51 51 H 1.09005 * 109.47262 * 60.00124 * 29 27 21 52 52 H 1.09001 * 109.47155 * 179.97438 * 29 27 21 53 53 H 1.08990 * 109.47425 * 300.00173 * 29 27 21 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 8 1.4519 0.0000 0.0000 3 6 2.0613 1.1960 0.0000 4 8 1.4032 2.2093 -0.0005 5 6 3.5663 1.2749 -0.0006 6 6 4.0000 2.7422 -0.0011 7 7 5.4630 2.8189 -0.0011 8 6 6.1490 2.8110 1.1841 9 1 5.6278 2.6098 2.1085 10 6 7.5142 3.0615 1.1975 11 7 8.0642 3.7628 0.2289 12 14 8.5710 2.4035 2.5902 13 1 8.4779 0.9218 2.6248 14 1 9.9837 2.8061 2.3725 15 1 8.0915 2.9599 3.8809 16 6 6.1920 2.9040 -1.2688 17 6 6.3677 4.3511 -1.6511 18 8 5.9269 5.2252 -0.9352 19 7 7.0148 4.6739 -2.7885 20 6 7.5478 3.6181 -3.6529 21 6 7.1850 6.0807 -3.1603 22 1 6.7262 6.7150 -2.4020 23 6 8.6770 6.4043 -3.2621 24 6 8.8548 7.8733 -3.6511 25 6 8.1844 8.1278 -5.0026 26 6 6.6924 7.8042 -4.9009 27 6 6.5145 6.3357 -4.5116 28 1 6.9730 5.7013 -5.2703 29 6 5.0226 6.0121 -4.4099 30 1 -0.3633 0.5138 -0.8900 31 1 -0.3633 -1.0277 0.0005 32 1 -0.3634 0.5138 0.8900 33 1 3.9556 0.7809 -0.8908 34 1 3.9563 0.7807 0.8891 35 1 3.6106 3.2365 0.8889 36 1 3.6100 3.2360 -0.8910 37 1 9.0181 3.9381 0.2384 38 1 5.6293 2.3884 -2.0470 39 1 7.1703 2.4363 -1.1575 40 1 8.5694 3.3844 -3.3533 41 1 6.9289 2.7256 -3.5602 42 1 7.5416 3.9586 -4.6884 43 1 9.1354 5.7699 -4.0207 44 1 9.1546 6.2226 -2.2994 45 1 9.9177 8.1040 -3.7232 46 1 8.3962 8.5081 -2.8928 47 1 8.3114 9.1742 -5.2799 48 1 8.6430 7.4931 -5.7609 49 1 6.2339 8.4389 -4.1426 50 1 6.2149 7.9851 -5.8638 51 1 4.5641 6.6465 -3.6513 52 1 4.5448 6.1943 -5.3725 53 1 4.8959 4.9655 -4.1332 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 ZINC000879474328.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 23:20:11 Heat of formation + Delta-G solvation = -107.367918 kcal Electronic energy + Delta-G solvation = -31982.280254 eV Core-core repulsion = 27854.662173 eV Total energy + Delta-G solvation = -4127.618081 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.220 amu Computer time = 1.50 seconds Orbital eigenvalues (eV) -40.12917 -39.52408 -37.55808 -36.37045 -35.33613 -33.97040 -32.26185 -32.11767 -30.23999 -29.60406 -27.61124 -26.78277 -26.29379 -25.46873 -24.35171 -22.33885 -21.39511 -20.96415 -20.01622 -19.33393 -18.36945 -17.35765 -16.64721 -16.26995 -16.24752 -15.77800 -15.47674 -15.01781 -14.46037 -14.25816 -14.21189 -14.01774 -13.82405 -13.59972 -13.26543 -13.02241 -12.72433 -12.57496 -12.38587 -12.13074 -12.04323 -11.99617 -11.92762 -11.73611 -11.61896 -11.43610 -11.31299 -11.17464 -10.85558 -10.83235 -10.67422 -10.65034 -10.47794 -10.29295 -10.25027 -10.13769 -10.06021 -9.92654 -9.87137 -9.80944 -8.76711 -8.17751 -7.55900 -6.97065 -5.82468 -3.09751 2.55041 2.99644 3.40358 3.46385 3.47534 3.97269 4.30671 4.53084 4.84864 4.95773 5.06692 5.11251 5.15565 5.21307 5.28705 5.32526 5.39456 5.47828 5.56827 5.58901 5.65752 5.68594 5.69127 5.74527 5.77409 5.86313 5.87980 5.92830 6.01272 6.09857 6.14684 6.19824 6.24075 6.24610 6.26326 6.34455 6.40101 6.42011 6.53116 6.55847 6.57067 6.65701 6.73721 6.84471 6.99348 7.14381 7.60564 7.76306 8.06294 8.22556 8.61935 9.13142 9.72129 9.88220 10.22847 11.26774 Molecular weight = 340.22amu Principal moments of inertia in cm(-1) A = 0.009395 B = 0.003878 C = 0.002918 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 2979.661896 B = 7219.109160 C = 9594.347600 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C 0.035 3.965 2 O -0.367 6.367 3 C 0.462 3.538 4 O -0.512 6.512 5 C -0.133 4.133 6 C 0.166 3.834 7 N -0.571 5.571 8 C -0.253 4.253 9 H 0.078 0.922 10 C 0.004 3.996 11 N -0.892 5.892 12 Si 0.901 3.099 13 H -0.285 1.285 14 H -0.293 1.293 15 H -0.285 1.285 16 C 0.164 3.836 17 C 0.536 3.464 18 O -0.529 6.529 19 N -0.625 5.625 20 C 0.092 3.908 21 C 0.154 3.846 22 H 0.093 0.907 23 C -0.124 4.124 24 C -0.117 4.117 25 C -0.118 4.118 26 C -0.111 4.111 27 C -0.099 4.099 28 H 0.066 0.934 29 C -0.139 4.139 30 H 0.059 0.941 31 H 0.095 0.905 32 H 0.059 0.941 33 H 0.096 0.904 34 H 0.106 0.894 35 H 0.057 0.943 36 H 0.046 0.954 37 H 0.253 0.747 38 H 0.034 0.966 39 H 0.104 0.896 40 H 0.044 0.956 41 H 0.062 0.938 42 H 0.053 0.947 43 H 0.056 0.944 44 H 0.069 0.931 45 H 0.058 0.942 46 H 0.061 0.939 47 H 0.057 0.943 48 H 0.058 0.942 49 H 0.062 0.938 50 H 0.058 0.942 51 H 0.053 0.947 52 H 0.045 0.955 53 H 0.056 0.944 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -3.642 -1.644 -11.778 12.438 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 -0.060 4.060 2 O -0.284 6.284 3 C 0.305 3.695 4 O -0.399 6.399 5 C -0.173 4.173 6 C 0.038 3.962 7 N -0.289 5.289 8 C -0.382 4.382 9 H 0.096 0.904 10 C -0.194 4.194 11 N -0.536 5.536 12 Si 0.731 3.269 13 H -0.212 1.212 14 H -0.219 1.219 15 H -0.212 1.212 16 C 0.034 3.966 17 C 0.324 3.676 18 O -0.402 6.402 19 N -0.362 5.362 20 C -0.052 4.052 21 C 0.049 3.951 22 H 0.111 0.889 23 C -0.162 4.162 24 C -0.155 4.155 25 C -0.155 4.155 26 C -0.149 4.149 27 C -0.118 4.118 28 H 0.084 0.916 29 C -0.196 4.196 30 H 0.078 0.922 31 H 0.114 0.886 32 H 0.078 0.922 33 H 0.115 0.885 34 H 0.124 0.876 35 H 0.075 0.925 36 H 0.065 0.935 37 H 0.064 0.936 38 H 0.052 0.948 39 H 0.122 0.878 40 H 0.063 0.937 41 H 0.081 0.919 42 H 0.072 0.928 43 H 0.075 0.925 44 H 0.088 0.912 45 H 0.076 0.924 46 H 0.080 0.920 47 H 0.075 0.925 48 H 0.077 0.923 49 H 0.081 0.919 50 H 0.077 0.923 51 H 0.072 0.928 52 H 0.064 0.936 53 H 0.075 0.925 Dipole moment (debyes) X Y Z Total from point charges -3.954 -0.839 -11.319 12.019 hybrid contribution 0.670 -0.209 0.684 0.980 sum -3.283 -1.048 -10.636 11.180 Atomic orbital electron populations 1.23165 0.77479 1.03049 1.02262 1.86567 1.22686 1.34595 1.84514 1.24426 0.92757 0.80801 0.71494 1.90642 1.67470 1.36350 1.45487 1.22385 0.84641 1.04834 1.05462 1.20454 0.84816 0.89823 1.01104 1.43892 0.99480 1.83066 1.02490 1.19185 0.90420 1.42320 0.86231 0.90396 1.24687 0.97613 0.99038 0.98096 1.69920 1.11115 1.37889 1.34724 0.86369 0.79511 0.79066 0.81946 1.21189 1.21880 1.21168 1.20784 0.98348 0.91366 0.86138 1.21879 0.74731 0.93580 0.77405 1.90501 1.49729 1.50789 1.49211 1.48017 1.59531 1.04480 1.24146 1.21463 0.98875 0.91159 0.93701 1.20756 0.94207 0.84759 0.95358 0.88939 1.21844 0.97157 0.95379 1.01861 1.21507 0.99922 0.97095 0.96960 1.21537 0.95808 1.00573 0.97589 1.21550 0.96090 0.96271 1.01003 1.21454 0.96379 0.96018 0.97998 0.91576 1.21712 0.95246 1.02141 1.00540 0.92245 0.88641 0.92204 0.88537 0.87581 0.92483 0.93519 0.93629 0.94786 0.87797 0.93705 0.91948 0.92836 0.92529 0.91221 0.92371 0.92000 0.92471 0.92299 0.91937 0.92321 0.92797 0.93622 0.92507 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 20. 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 0.03 0.38 10.56 101.05 1.07 1.44 16 2 O -0.37 -5.29 10.56 -39.25 -0.41 -5.71 16 3 C 0.46 7.72 7.96 36.01 0.29 8.00 16 4 O -0.51 -9.89 15.73 -18.75 -0.30 -10.19 16 5 C -0.13 -2.25 6.13 -27.88 -0.17 -2.42 16 6 C 0.17 3.51 4.96 -4.04 -0.02 3.49 16 7 N -0.57 -13.68 2.02 -174.62 -0.35 -14.04 16 8 C -0.25 -6.68 9.70 -15.06 -0.15 -6.83 16 9 H 0.08 2.04 7.94 -52.48 -0.42 1.62 16 10 C 0.00 0.10 4.90 -17.43 -0.09 0.01 16 11 N -0.89 -24.33 8.96 55.49 0.50 -23.83 16 12 Si 0.90 21.28 29.62 -169.99 -5.04 16.24 16 13 H -0.29 -6.59 7.11 56.52 0.40 -6.19 16 14 H -0.29 -7.03 7.11 56.52 0.40 -6.63 16 15 H -0.29 -6.85 7.11 56.52 0.40 -6.45 16 16 C 0.16 3.64 3.97 -5.20 -0.02 3.62 16 17 C 0.54 12.33 5.74 -10.99 -0.06 12.27 16 18 O -0.53 -14.62 15.49 5.56 0.09 -14.54 16 19 N -0.62 -11.58 2.00 -173.94 -0.35 -11.93 16 20 C 0.09 1.37 9.30 59.85 0.56 1.92 16 21 C 0.15 2.61 1.97 -67.93 -0.13 2.48 16 22 H 0.09 1.92 6.90 -51.93 -0.36 1.56 16 23 C -0.12 -1.90 5.21 -26.73 -0.14 -2.04 16 24 C -0.12 -1.50 5.92 -26.73 -0.16 -1.65 16 25 C -0.12 -1.30 5.92 -26.73 -0.16 -1.46 16 26 C -0.11 -1.32 5.20 -26.75 -0.14 -1.46 16 27 C -0.10 -1.35 2.08 -90.64 -0.19 -1.54 16 28 H 0.07 0.85 6.66 -51.93 -0.35 0.50 16 29 C -0.14 -2.00 9.04 37.16 0.34 -1.66 16 30 H 0.06 0.63 8.13 -51.93 -0.42 0.21 16 31 H 0.10 0.73 8.14 -51.92 -0.42 0.31 16 32 H 0.06 0.65 8.13 -51.93 -0.42 0.23 16 33 H 0.10 1.48 8.14 -51.93 -0.42 1.06 16 34 H 0.11 1.78 8.14 -51.93 -0.42 1.35 16 35 H 0.06 1.30 8.01 -51.93 -0.42 0.88 16 36 H 0.05 1.00 8.01 -51.93 -0.42 0.59 16 37 H 0.25 6.88 8.31 -40.82 -0.34 6.54 16 38 H 0.03 0.65 7.33 -51.93 -0.38 0.27 16 39 H 0.10 2.47 6.26 -51.93 -0.33 2.14 16 40 H 0.04 0.68 8.14 -51.93 -0.42 0.26 16 41 H 0.06 0.87 6.44 -51.93 -0.33 0.53 16 42 H 0.05 0.66 6.43 -51.93 -0.33 0.32 16 43 H 0.06 0.80 7.67 -51.93 -0.40 0.40 16 44 H 0.07 1.27 8.14 -51.93 -0.42 0.85 16 45 H 0.06 0.68 8.14 -51.93 -0.42 0.25 16 46 H 0.06 0.84 8.14 -51.93 -0.42 0.42 16 47 H 0.06 0.56 8.14 -51.93 -0.42 0.14 16 48 H 0.06 0.61 8.14 -51.93 -0.42 0.19 16 49 H 0.06 0.79 8.14 -51.93 -0.42 0.37 16 50 H 0.06 0.61 8.14 -51.93 -0.42 0.19 16 51 H 0.05 0.86 8.14 -51.93 -0.42 0.43 16 52 H 0.04 0.55 8.14 -51.93 -0.42 0.13 16 53 H 0.06 0.89 7.60 -51.93 -0.39 0.49 16 LS Contribution 413.95 15.07 6.24 6.24 Total: -1.00 -32.23 413.95 -8.40 -40.63 By element: Atomic # 1 Polarization: 12.55 SS G_CDS: -9.60 Total: 2.95 kcal Atomic # 6 Polarization: 13.35 SS G_CDS: 0.82 Total: 14.17 kcal Atomic # 7 Polarization: -49.59 SS G_CDS: -0.20 Total: -49.80 kcal Atomic # 8 Polarization: -29.81 SS G_CDS: -0.62 Total: -30.43 kcal Atomic # 14 Polarization: 21.28 SS G_CDS: -5.04 Total: 16.24 kcal Total LS contribution 6.24 Total: 6.24 kcal Total: -32.23 -8.40 -40.63 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. ZINC000879474328.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 -66.741 kcal (2) G-P(sol) polarization free energy of solvation -32.229 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -98.969 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -8.399 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -40.627 kcal (6) G-S(sol) free energy of system = (1) + (5) -107.368 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.50 seconds