Wall clock time and date at job start Tue Mar 31 2020 05:33:21 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 N 2 2 C 1.31619 * 1 3 3 Si 1.86799 * 120.00133 * 2 1 4 4 H 1.48499 * 109.47146 * 270.00185 * 3 2 1 5 5 H 1.48495 * 109.46802 * 30.00009 * 3 2 1 6 6 H 1.48503 * 109.47065 * 150.00131 * 3 2 1 7 7 C 1.38817 * 119.99863 * 179.97438 * 2 1 3 8 8 H 1.07998 * 119.99910 * 196.26664 * 7 2 1 9 9 N 1.36935 * 119.99942 * 16.27074 * 7 2 1 10 10 C 1.46969 * 120.59558 * 211.44783 * 9 7 2 11 11 C 1.53369 * 108.63899 * 235.20572 * 10 9 7 12 12 N 1.46965 * 108.63325 * 310.57399 * 11 10 9 13 13 C 1.34771 * 120.59328 * 235.20056 * 12 11 10 14 14 O 1.21279 * 119.99688 * 185.29928 * 13 12 11 15 15 C 1.50699 * 120.00041 * 5.30540 * 13 12 11 16 16 H 1.09004 * 109.50568 * 44.79652 * 15 13 12 17 17 C 1.53092 * 109.50502 * 284.70579 * 15 13 12 18 18 N 1.47011 * 109.25786 * 183.21766 * 17 15 13 19 19 C 1.46906 * 111.00253 * 182.39317 * 18 17 15 20 20 C 1.50705 * 109.46749 * 302.41004 * 19 18 17 21 21 C 1.38227 * 119.99943 * 269.72280 * 20 19 18 22 22 C 1.38234 * 119.99969 * 179.78848 * 21 20 19 23 23 C 1.38236 * 120.00072 * 0.44741 * 22 21 20 24 24 C 1.38238 * 119.99842 * 359.80733 * 23 22 21 25 25 C 1.38229 * 119.99834 * 90.00145 * 20 19 18 26 26 C 1.47017 * 110.75378 * 58.61512 * 18 17 15 27 27 C 1.53096 * 109.25578 * 301.38415 * 26 18 17 28 28 O 1.43016 * 109.50527 * 164.87813 * 15 13 12 29 29 C 1.46974 * 118.81079 * 55.47968 * 12 11 10 30 30 C 1.46965 * 120.59528 * 31.42599 * 9 7 2 31 31 H 0.96995 * 119.99750 * 359.97438 * 1 2 3 32 32 H 1.08998 * 109.60837 * 115.45391 * 10 9 7 33 33 H 1.09002 * 109.60339 * 354.95408 * 10 9 7 34 34 H 1.08992 * 109.60989 * 190.82877 * 11 10 9 35 35 H 1.09006 * 109.60696 * 70.31800 * 11 10 9 36 36 H 1.08999 * 109.51062 * 63.27983 * 17 15 13 37 37 H 1.09005 * 109.51024 * 303.15211 * 17 15 13 38 38 H 1.08996 * 109.46995 * 62.41001 * 19 18 17 39 39 H 1.08999 * 109.47325 * 182.40800 * 19 18 17 40 40 H 1.07997 * 120.00413 * 0.02562 * 21 20 19 41 41 H 1.08007 * 120.00386 * 180.27146 * 22 21 20 42 42 H 1.07997 * 120.00372 * 179.83455 * 23 22 21 43 43 H 1.08002 * 120.00163 * 180.02562 * 24 23 22 44 44 H 1.08003 * 120.00373 * 359.97438 * 25 20 19 45 45 H 1.09002 * 109.50501 * 181.44535 * 26 18 17 46 46 H 1.09000 * 109.50497 * 61.32417 * 26 18 17 47 47 H 1.09009 * 109.50375 * 176.77984 * 27 26 18 48 48 H 1.08995 * 109.50923 * 296.86667 * 27 26 18 49 49 H 1.08997 * 109.61043 * 64.26534 * 29 12 11 50 50 H 1.08998 * 109.60461 * 184.77904 * 29 12 11 51 51 H 1.08998 * 109.61031 * 244.54095 * 30 9 7 52 52 H 1.08998 * 109.60730 * 5.05453 * 30 9 7 Note: An asterisk (*) indicates this parameter was or will be optimized. Cartesian coordinates (angstroms) NO. Atom X Y Z 1 7 0.0000 0.0000 0.0000 2 6 1.3162 0.0000 0.0000 3 14 2.2502 1.6177 0.0000 4 1 2.4977 2.0464 -1.4001 5 1 1.4477 2.6526 0.7000 6 1 3.5478 1.4401 0.7000 7 6 2.0102 -1.2022 0.0005 8 1 3.0578 -1.2208 0.2625 9 7 1.3667 -2.3645 -0.3312 10 6 1.7709 -3.6420 0.2726 11 6 2.0935 -4.6349 -0.8509 12 7 0.9859 -4.6271 -1.8168 13 6 0.3525 -5.7711 -2.1433 14 8 -0.4945 -5.7687 -3.0113 15 6 0.6967 -7.0530 -1.4298 16 1 0.7634 -6.8664 -0.3579 17 6 2.0405 -7.5782 -1.9419 18 7 2.3341 -8.8673 -1.2991 19 6 3.6445 -9.3798 -1.7213 20 6 3.6707 -9.5165 -3.2219 21 6 3.2802 -10.7026 -3.8147 22 6 3.3000 -10.8266 -5.1913 23 6 3.7191 -9.7676 -5.9747 24 6 4.1146 -8.5832 -5.3816 25 6 4.0906 -8.4578 -4.0051 26 6 1.2712 -9.8435 -1.5800 27 6 -0.0648 -9.2956 -1.0714 28 8 -0.3189 -8.0277 -1.6824 29 6 0.5853 -3.3505 -2.4249 30 6 0.2590 -2.3567 -1.2971 31 1 -0.4849 0.8400 0.0004 32 1 0.9564 -4.0320 0.8830 33 1 2.6550 -3.4902 0.8919 34 1 2.2078 -5.6351 -0.4334 35 1 3.0157 -4.3362 -1.3494 36 1 2.8269 -6.8633 -1.6998 37 1 1.9906 -7.7132 -3.0224 38 1 4.4244 -8.6867 -1.4059 39 1 3.8180 -10.3541 -1.2645 40 1 2.9560 -11.5312 -3.2026 41 1 2.9908 -11.7519 -5.6548 42 1 3.7372 -9.8653 -7.0501 43 1 4.4417 -7.7556 -5.9937 44 1 4.3996 -7.5324 -3.5418 45 1 1.4962 -10.7822 -1.0736 46 1 1.2091 -10.0148 -2.6546 47 1 -0.8646 -9.9903 -1.3284 48 1 -0.0207 -9.1756 0.0110 49 1 1.4026 -2.9625 -3.0329 50 1 -0.2966 -3.5025 -3.0471 51 1 -0.6631 -2.6554 -0.7986 52 1 0.1448 -1.3564 -1.7146 RHF calculation, no. of doubly occupied orbitals= 68 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 ZINC000073099766.mol2 52 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 05:33:21 Heat of formation + Delta-G solvation = -3.041225 kcal Electronic energy + Delta-G solvation = -33624.310426 eV Core-core repulsion = 29397.105628 eV Total energy + Delta-G solvation = -4227.204798 eV No. of doubly occupied orbitals = 68 Molecular weight (most abundant/longest-lived isotopes) = 359.200 amu Computer time = 1.44 seconds Orbital eigenvalues (eV) -40.75210 -39.63601 -38.52240 -36.78092 -35.95468 -33.97400 -32.01527 -31.72669 -31.19982 -31.11789 -30.06303 -28.28855 -26.99515 -25.22613 -24.56987 -23.56723 -22.79617 -22.67639 -21.85274 -20.75552 -20.24763 -18.81200 -17.47598 -17.08189 -16.56772 -16.46884 -16.17768 -15.79540 -15.52105 -15.21293 -14.97312 -14.91867 -14.75164 -14.50109 -14.12696 -13.84448 -13.71761 -13.66694 -13.42312 -13.32262 -13.01696 -12.90773 -12.72602 -12.50447 -12.11070 -11.81526 -11.69303 -11.61944 -11.52171 -11.25079 -11.24338 -10.89457 -10.83977 -10.76109 -10.56429 -10.26870 -10.01597 -9.86854 -9.79059 -9.29134 -9.17528 -9.05095 -8.70578 -8.60005 -8.26999 -6.69480 -5.86526 -3.35009 1.02598 1.11862 2.80080 3.05449 3.33546 3.40509 3.41248 3.41839 3.67663 3.99499 4.42268 4.43999 4.46203 4.64572 4.69757 4.71122 4.76299 4.84005 4.90410 4.99888 5.11011 5.15922 5.20622 5.22854 5.30144 5.31088 5.38359 5.43519 5.54050 5.58414 5.69920 5.71748 5.73418 5.74154 5.77030 5.87921 6.09085 6.15576 6.22725 6.25408 6.30001 6.36452 6.45445 6.57601 6.61282 6.67910 6.71131 6.81271 7.01576 7.23787 7.50248 7.72130 7.84742 8.36488 8.53045 9.10599 9.72511 10.31255 11.21032 Molecular weight = 359.20amu Principal moments of inertia in cm(-1) A = 0.014771 B = 0.002559 C = 0.002415 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1895.206028 B =10939.337935 C =11591.768652 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 N -0.899 5.899 2 C 0.008 3.992 3 Si 0.904 3.096 4 H -0.286 1.286 5 H -0.291 1.291 6 H -0.278 1.278 7 C -0.261 4.261 8 H 0.066 0.934 9 N -0.590 5.590 10 C 0.131 3.869 11 C 0.083 3.917 12 N -0.593 5.593 13 C 0.518 3.482 14 O -0.533 6.533 15 C 0.080 3.920 16 H 0.090 0.910 17 C 0.024 3.976 18 N -0.521 5.521 19 C 0.092 3.908 20 C -0.125 4.125 21 C -0.109 4.109 22 C -0.122 4.122 23 C -0.118 4.118 24 C -0.118 4.118 25 C -0.106 4.106 26 C 0.010 3.990 27 C 0.062 3.938 28 O -0.356 6.356 29 C 0.089 3.911 30 C 0.161 3.839 31 H 0.256 0.744 32 H 0.024 0.976 33 H 0.068 0.932 34 H 0.076 0.924 35 H 0.068 0.932 36 H 0.095 0.905 37 H 0.057 0.943 38 H 0.089 0.911 39 H 0.087 0.913 40 H 0.119 0.881 41 H 0.121 0.879 42 H 0.121 0.879 43 H 0.123 0.877 44 H 0.122 0.878 45 H 0.087 0.913 46 H 0.051 0.949 47 H 0.101 0.899 48 H 0.061 0.939 49 H 0.061 0.939 50 H 0.080 0.920 51 H 0.025 0.975 52 H 0.095 0.905 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges 8.191 -23.097 -5.532 25.123 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 N -0.542 5.542 2 C -0.192 4.192 3 Si 0.734 3.266 4 H -0.213 1.213 5 H -0.217 1.217 6 H -0.203 1.203 7 C -0.391 4.391 8 H 0.084 0.916 9 N -0.313 5.313 10 C 0.003 3.997 11 C -0.042 4.042 12 N -0.327 5.327 13 C 0.303 3.697 14 O -0.410 6.410 15 C 0.019 3.981 16 H 0.108 0.892 17 C -0.104 4.104 18 N -0.244 5.244 19 C -0.035 4.035 20 C -0.127 4.127 21 C -0.128 4.128 22 C -0.140 4.140 23 C -0.137 4.137 24 C -0.136 4.136 25 C -0.125 4.125 26 C -0.118 4.118 27 C -0.015 4.015 28 O -0.273 6.273 29 C -0.034 4.034 30 C 0.035 3.965 31 H 0.066 0.934 32 H 0.042 0.958 33 H 0.086 0.914 34 H 0.094 0.906 35 H 0.086 0.914 36 H 0.113 0.887 37 H 0.076 0.924 38 H 0.107 0.893 39 H 0.105 0.895 40 H 0.137 0.863 41 H 0.139 0.861 42 H 0.139 0.861 43 H 0.141 0.859 44 H 0.140 0.860 45 H 0.105 0.895 46 H 0.070 0.930 47 H 0.119 0.881 48 H 0.080 0.920 49 H 0.080 0.920 50 H 0.099 0.901 51 H 0.044 0.956 52 H 0.113 0.887 Dipole moment (debyes) X Y Z Total from point charges 7.455 -22.799 -5.538 24.618 hybrid contribution 0.655 0.664 -0.717 1.176 sum 8.110 -22.135 -6.255 24.389 Atomic orbital electron populations 1.70020 1.05369 1.25840 1.52935 1.25171 0.95285 0.98657 1.00104 0.86270 0.79114 0.83455 0.77764 1.21303 1.21698 1.20337 1.19151 0.92257 0.84441 1.43203 0.91594 1.43953 1.38864 1.02362 1.46075 1.21287 0.98589 0.87357 0.92422 1.22541 0.89107 1.00564 0.91951 1.47982 1.34388 1.07069 1.43237 1.19921 0.82143 0.84255 0.83383 1.90670 1.33055 1.85605 1.31636 1.21948 0.87763 0.88415 1.00007 0.89219 1.22823 0.97029 0.92023 0.98546 1.62652 1.02033 1.03087 1.56612 1.21292 0.91608 1.01864 0.88733 1.20633 1.00199 0.94345 0.97539 1.21043 0.99782 0.97068 0.94910 1.21151 1.00022 0.98928 0.93894 1.21190 0.99028 0.93537 0.99915 1.21209 0.99688 0.97784 0.94951 1.21139 0.99078 0.98341 0.93911 1.22915 0.92242 0.95954 1.00665 1.22724 0.95970 0.85228 0.97597 1.88128 1.43882 1.20720 1.74591 1.22632 1.00189 0.82856 0.97763 1.21222 0.89620 0.97667 0.87996 0.93397 0.95803 0.91385 0.90629 0.91374 0.88730 0.92446 0.89264 0.89453 0.86257 0.86130 0.86120 0.85922 0.86001 0.89507 0.93035 0.88085 0.92041 0.92033 0.90125 0.95641 0.88733 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 16. 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 N -0.90 -25.57 11.37 55.49 0.63 -24.94 16 2 C 0.01 0.20 4.91 -17.43 -0.09 0.12 16 3 Si 0.90 21.04 29.58 -169.99 -5.03 16.01 16 4 H -0.29 -6.65 7.11 56.52 0.40 -6.25 16 5 H -0.29 -6.88 7.11 56.52 0.40 -6.48 16 6 H -0.28 -6.31 7.11 56.52 0.40 -5.91 16 7 C -0.26 -6.84 9.55 -15.06 -0.14 -6.99 16 8 H 0.07 1.68 7.88 -52.49 -0.41 1.27 16 9 N -0.59 -14.15 2.95 -171.76 -0.51 -14.66 16 10 C 0.13 2.54 6.67 -3.60 -0.02 2.51 16 11 C 0.08 1.31 5.62 -3.60 -0.02 1.29 16 12 N -0.59 -10.77 2.94 -172.21 -0.51 -11.28 16 13 C 0.52 9.59 7.01 -10.99 -0.08 9.51 16 14 O -0.53 -11.89 16.00 -13.85 -0.22 -12.11 16 15 C 0.08 1.19 2.36 -27.84 -0.07 1.12 16 16 H 0.09 1.25 7.13 -51.93 -0.37 0.88 16 17 C 0.02 0.29 3.79 -3.72 -0.01 0.28 16 18 N -0.52 -5.16 4.94 -235.75 -1.16 -6.32 16 19 C 0.09 0.75 5.58 -4.97 -0.03 0.72 16 20 C -0.13 -1.15 4.01 -104.63 -0.42 -1.57 16 21 C -0.11 -0.94 8.05 -39.59 -0.32 -1.26 16 22 C -0.12 -1.05 10.05 -39.58 -0.40 -1.44 16 23 C -0.12 -1.06 10.05 -39.58 -0.40 -1.46 16 24 C -0.12 -1.14 10.05 -39.58 -0.40 -1.54 16 25 C -0.11 -1.04 7.93 -39.58 -0.31 -1.36 16 26 C 0.01 0.10 5.14 -3.71 -0.02 0.08 16 27 C 0.06 0.66 7.01 37.21 0.26 0.92 16 28 O -0.36 -5.56 10.05 -54.64 -0.55 -6.11 16 29 C 0.09 1.79 6.61 -3.36 -0.02 1.76 16 30 C 0.16 3.81 5.50 -3.36 -0.02 3.80 16 31 H 0.26 7.06 8.31 -40.82 -0.34 6.72 16 32 H 0.02 0.48 8.14 -51.93 -0.42 0.06 16 33 H 0.07 1.24 7.93 -51.93 -0.41 0.83 16 34 H 0.08 0.97 4.62 -51.93 -0.24 0.73 16 35 H 0.07 1.03 8.14 -51.93 -0.42 0.61 16 36 H 0.09 1.05 6.17 -51.93 -0.32 0.73 16 37 H 0.06 0.80 6.22 -51.93 -0.32 0.48 16 38 H 0.09 0.67 8.09 -51.93 -0.42 0.25 16 39 H 0.09 0.58 8.05 -51.93 -0.42 0.16 16 40 H 0.12 0.82 8.04 -52.49 -0.42 0.39 16 41 H 0.12 0.79 8.06 -52.48 -0.42 0.37 16 42 H 0.12 0.85 8.06 -52.49 -0.42 0.43 16 43 H 0.12 1.01 8.06 -52.49 -0.42 0.59 16 44 H 0.12 1.11 8.02 -52.48 -0.42 0.69 16 45 H 0.09 0.60 8.12 -51.93 -0.42 0.18 16 46 H 0.05 0.54 6.34 -51.93 -0.33 0.22 16 47 H 0.10 0.89 8.14 -51.92 -0.42 0.46 16 48 H 0.06 0.61 8.14 -51.93 -0.42 0.18 16 49 H 0.06 1.20 8.14 -51.93 -0.42 0.78 16 50 H 0.08 1.65 7.02 -51.93 -0.36 1.29 16 51 H 0.03 0.65 8.14 -51.93 -0.42 0.23 16 52 H 0.09 2.46 6.21 -51.93 -0.32 2.13 16 LS Contribution 400.20 15.07 6.03 6.03 Total: -1.00 -32.88 400.20 -11.95 -44.84 By element: Atomic # 1 Polarization: 10.18 SS G_CDS: -8.14 Total: 2.04 kcal Atomic # 6 Polarization: 9.01 SS G_CDS: -2.50 Total: 6.50 kcal Atomic # 7 Polarization: -55.66 SS G_CDS: -1.55 Total: -57.20 kcal Atomic # 8 Polarization: -17.45 SS G_CDS: -0.77 Total: -18.22 kcal Atomic # 14 Polarization: 21.04 SS G_CDS: -5.03 Total: 16.01 kcal Total LS contribution 6.03 Total: 6.03 kcal Total: -32.88 -11.95 -44.84 kcal The number of atoms in the molecule is 52 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. ZINC000073099766.mol2 52 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 41.795 kcal (2) G-P(sol) polarization free energy of solvation -32.882 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system 8.913 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -11.955 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -44.836 kcal (6) G-S(sol) free energy of system = (1) + (5) -3.041 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.44 seconds