Wall clock time and date at job start Sat Apr 11 2020 06:11:20 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 1.53001 * 1 3 3 C 1.53001 * 109.46732 * 2 1 4 4 C 1.50694 * 109.47017 * 240.00275 * 2 1 3 5 5 H 1.08000 * 119.99792 * 241.34538 * 4 2 1 6 6 C 1.37874 * 120.00601 * 61.34655 * 4 2 1 7 7 N 1.31508 * 120.00606 * 193.98191 * 6 4 2 8 8 Si 1.86804 * 119.99614 * 13.97167 * 6 4 2 9 9 H 1.48503 * 109.46936 * 84.55634 * 8 6 4 10 10 H 1.48499 * 109.47020 * 204.55143 * 8 6 4 11 11 H 1.48502 * 109.47495 * 324.55238 * 8 6 4 12 12 C 1.52994 * 109.47098 * 119.99910 * 2 1 3 13 13 N 1.46504 * 109.47526 * 299.99983 * 12 2 1 14 14 C 1.34770 * 120.00320 * 180.02562 * 13 12 2 15 15 O 1.21349 * 120.00323 * 0.02562 * 14 13 12 16 16 C 1.49456 * 120.00056 * 179.97438 * 14 13 12 17 17 O 1.21341 * 119.99921 * 0.02562 * 16 14 13 18 18 N 1.34780 * 120.00032 * 179.97438 * 16 14 13 19 19 C 1.46493 * 119.99970 * 180.02562 * 18 16 14 20 20 C 1.53003 * 109.47020 * 180.02562 * 19 18 16 21 21 C 1.53007 * 109.46870 * 180.02562 * 20 19 18 22 22 C 1.53003 * 109.46870 * 180.02562 * 21 20 19 23 23 H 1.09006 * 109.47805 * 305.02186 * 22 21 20 24 24 C 1.53089 * 109.47773 * 185.00003 * 22 21 20 25 25 C 1.53182 * 109.16171 * 182.40674 * 24 22 21 26 26 C 1.53182 * 109.03493 * 56.97663 * 25 24 22 27 27 C 1.53091 * 109.16429 * 303.02090 * 26 25 24 28 28 O 1.42902 * 109.47968 * 65.05315 * 22 21 20 29 29 H 1.09003 * 109.46860 * 309.36511 * 1 2 3 30 30 H 1.08998 * 109.47542 * 69.37055 * 1 2 3 31 31 H 1.09001 * 109.46970 * 189.36821 * 1 2 3 32 32 H 1.09005 * 109.46906 * 180.02562 * 3 2 1 33 33 H 1.08995 * 109.47289 * 300.00176 * 3 2 1 34 34 H 1.08996 * 109.47514 * 60.00332 * 3 2 1 35 35 H 0.96997 * 120.00456 * 179.97438 * 7 6 4 36 36 H 1.09004 * 109.46983 * 180.02562 * 12 2 1 37 37 H 1.08996 * 109.47470 * 60.00652 * 12 2 1 38 38 H 0.97004 * 119.99541 * 359.97438 * 13 12 2 39 39 H 0.96998 * 119.99649 * 0.02562 * 18 16 14 40 40 H 1.08996 * 109.47241 * 60.00095 * 19 18 16 41 41 H 1.09003 * 109.47064 * 300.00459 * 19 18 16 42 42 H 1.08996 * 109.47453 * 59.99714 * 20 19 18 43 43 H 1.08998 * 109.46688 * 299.99808 * 20 19 18 44 44 H 1.09003 * 109.47025 * 299.99832 * 21 20 19 45 45 H 1.08995 * 109.46931 * 59.99722 * 21 20 19 46 46 H 1.08998 * 109.52006 * 302.30723 * 24 22 21 47 47 H 1.08998 * 109.52347 * 62.49980 * 24 22 21 48 48 H 1.08993 * 109.54646 * 176.84689 * 25 24 22 49 49 H 1.08998 * 109.54197 * 297.02798 * 25 24 22 50 50 H 1.09007 * 109.52015 * 62.92757 * 26 25 24 51 51 H 1.08996 * 109.52204 * 183.11026 * 26 25 24 52 52 H 1.09001 * 109.47645 * 177.59087 * 27 26 25 53 53 H 1.08993 * 109.48209 * 297.62515 * 27 26 25 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 2.0399 1.4425 0.0000 4 6 2.0323 -0.7103 -1.2305 5 1 2.6351 -1.6009 -1.1315 6 6 1.7223 -0.2233 -2.4825 7 7 1.9157 -0.9725 -3.5460 8 14 1.0275 1.5007 -2.6684 9 1 2.1416 2.4817 -2.7084 10 1 0.2469 1.5865 -3.9287 11 1 0.1416 1.8043 -1.5158 12 6 2.0400 -0.7212 1.2492 13 7 1.5517 -0.0306 2.4454 14 6 1.8777 -0.4908 3.6695 15 8 2.5761 -1.4768 3.7809 16 6 1.3800 0.2141 4.8898 17 8 0.6820 1.2004 4.7785 18 7 1.7056 -0.2464 6.1139 19 6 1.2173 0.4442 7.3100 20 6 1.7279 -0.2767 8.5593 21 6 1.2173 0.4443 9.8086 22 6 1.7284 -0.2763 11.0578 23 1 1.4415 -1.3270 11.0143 24 6 1.1176 0.3685 12.3048 25 6 1.6801 -0.3187 13.5529 26 6 3.2084 -0.2154 13.5342 27 6 3.7383 -0.8377 12.2397 28 8 3.1524 -0.1729 11.1185 29 1 -0.3633 0.6518 0.7945 30 1 -0.3634 0.3621 -0.9617 31 1 -0.3633 -1.0140 0.1673 32 1 3.1300 1.4426 -0.0005 33 1 1.6765 1.9564 -0.8899 34 1 1.6766 1.9564 0.8900 35 1 1.6972 -0.6300 -4.4268 36 1 3.1300 -0.7208 1.2494 37 1 1.6768 -1.7489 1.2492 38 1 0.9943 0.7583 2.3564 39 1 2.2633 -1.0350 6.2029 40 1 0.1274 0.4442 7.3101 41 1 1.5806 1.4719 7.3100 42 1 2.8178 -0.2764 8.5591 43 1 1.3648 -1.3044 8.5595 44 1 1.5799 1.4722 9.8085 45 1 0.1274 0.4435 9.8085 46 1 1.3703 1.4286 12.3275 47 1 0.0342 0.2517 12.2817 48 1 1.2924 0.1722 14.4455 49 1 1.3843 -1.3678 13.5561 50 1 3.5032 0.8329 13.5818 51 1 3.6200 -0.7497 14.3904 52 1 4.8221 -0.7287 12.2012 53 1 3.4779 -1.8957 12.2118 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 ZINC000422390836.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 06:11:20 Heat of formation + Delta-G solvation = -129.558265 kcal Electronic energy + Delta-G solvation = -29306.086961 eV Core-core repulsion = 25177.506634 eV Total energy + Delta-G solvation = -4128.580327 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.220 amu Computer time = 0.72 seconds Orbital eigenvalues (eV) -40.47682 -39.93425 -38.52196 -36.80625 -36.22733 -34.11986 -33.99727 -33.23580 -31.49657 -30.90168 -27.62099 -26.53390 -26.33322 -25.13481 -24.77789 -23.65357 -22.38440 -21.70606 -20.70799 -20.10177 -19.35867 -18.16354 -17.02731 -16.79363 -16.50040 -16.09458 -16.04951 -15.60953 -15.22612 -15.13663 -15.02209 -14.87424 -14.72932 -14.16635 -14.03659 -13.66151 -13.30177 -13.15147 -13.02926 -12.91703 -12.65154 -12.59521 -12.29019 -12.22433 -12.02691 -11.93384 -11.66960 -11.59535 -11.45883 -11.35545 -11.17638 -11.13174 -10.71490 -10.47754 -10.32725 -10.17359 -10.06941 -9.88103 -9.44129 -9.35313 -9.12011 -8.71836 -8.68913 -8.46637 -6.15489 -4.13261 1.59492 2.51932 3.25898 3.31226 3.33802 3.40062 3.41009 3.83241 4.11628 4.28189 4.34438 4.35991 4.42776 4.52571 4.59066 4.71431 4.75086 4.86799 4.94030 5.00608 5.15214 5.15438 5.20939 5.23910 5.30888 5.33629 5.44577 5.47831 5.51872 5.61353 5.70463 5.73086 5.82806 5.87451 5.99809 6.05131 6.12451 6.35807 6.41818 6.49214 6.58512 6.61950 6.68990 6.80263 6.90735 7.05949 7.18406 7.40256 7.59881 7.70541 7.89879 8.25714 8.43665 8.88796 9.48349 10.97299 Molecular weight = 340.22amu Principal moments of inertia in cm(-1) A = 0.037135 B = 0.001548 C = 0.001519 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 753.826856 B =18081.284679 C =18425.517487 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.144 4.144 2 C 0.028 3.972 3 C -0.150 4.150 4 C -0.514 4.514 5 H 0.077 0.923 6 C 0.077 3.923 7 N -0.890 5.890 8 Si 0.884 3.116 9 H -0.285 1.285 10 H -0.305 1.305 11 H -0.248 1.248 12 C 0.138 3.862 13 N -0.687 5.687 14 C 0.498 3.502 15 O -0.531 6.531 16 C 0.507 3.493 17 O -0.523 6.523 18 N -0.705 5.705 19 C 0.117 3.883 20 C -0.130 4.130 21 C -0.108 4.108 22 C 0.090 3.910 23 H 0.059 0.941 24 C -0.152 4.152 25 C -0.124 4.124 26 C -0.158 4.158 27 C 0.061 3.939 28 O -0.376 6.376 29 H 0.024 0.976 30 H 0.058 0.942 31 H 0.048 0.952 32 H 0.054 0.946 33 H 0.043 0.957 34 H 0.032 0.968 35 H 0.265 0.735 36 H 0.069 0.931 37 H 0.070 0.930 38 H 0.409 0.591 39 H 0.413 0.587 40 H 0.071 0.929 41 H 0.072 0.928 42 H 0.080 0.920 43 H 0.070 0.930 44 H 0.076 0.924 45 H 0.081 0.919 46 H 0.072 0.928 47 H 0.073 0.927 48 H 0.067 0.933 49 H 0.063 0.937 50 H 0.071 0.929 51 H 0.072 0.928 52 H 0.093 0.907 53 H 0.049 0.951 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -1.393 2.340 34.216 34.325 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 -0.202 4.202 2 C 0.026 3.974 3 C -0.207 4.207 4 C -0.552 4.552 5 H 0.095 0.905 6 C -0.126 4.126 7 N -0.526 5.526 8 Si 0.717 3.283 9 H -0.213 1.213 10 H -0.233 1.233 11 H -0.174 1.174 12 C 0.017 3.983 13 N -0.339 5.339 14 C 0.277 3.723 15 O -0.408 6.408 16 C 0.288 3.712 17 O -0.398 6.398 18 N -0.359 5.359 19 C -0.006 4.006 20 C -0.168 4.168 21 C -0.146 4.146 22 C 0.033 3.967 23 H 0.077 0.923 24 C -0.189 4.189 25 C -0.161 4.161 26 C -0.195 4.195 27 C -0.016 4.016 28 O -0.296 6.296 29 H 0.043 0.957 30 H 0.076 0.924 31 H 0.067 0.933 32 H 0.073 0.927 33 H 0.061 0.939 34 H 0.051 0.949 35 H 0.075 0.925 36 H 0.087 0.913 37 H 0.088 0.912 38 H 0.246 0.754 39 H 0.249 0.751 40 H 0.089 0.911 41 H 0.090 0.910 42 H 0.099 0.901 43 H 0.088 0.912 44 H 0.095 0.905 45 H 0.099 0.901 46 H 0.091 0.909 47 H 0.092 0.908 48 H 0.085 0.915 49 H 0.082 0.918 50 H 0.090 0.910 51 H 0.090 0.910 52 H 0.112 0.888 53 H 0.068 0.932 Dipole moment (debyes) X Y Z Total from point charges -1.305 2.420 33.842 33.953 hybrid contribution -0.440 0.819 0.019 0.930 sum -1.745 3.239 33.861 34.060 Atomic orbital electron populations 1.22316 0.97656 0.99973 1.00238 1.18748 0.92723 0.92387 0.93515 1.22379 1.01244 0.98212 0.98869 1.20671 1.34255 1.12358 0.87888 0.90461 1.24951 0.94591 0.97295 0.95755 1.69941 1.48054 1.35912 0.98736 0.87312 0.79435 0.85512 0.76087 1.21304 1.23350 1.17414 1.21727 0.99011 0.96043 0.81558 1.46200 1.50870 1.31514 1.05319 1.19967 0.82281 0.85183 0.84868 1.90742 1.37529 1.25812 1.86734 1.20438 0.81062 0.84680 0.85027 1.90747 1.36683 1.25515 1.86895 1.45759 1.52959 1.32294 1.04880 1.21473 0.99564 0.96678 0.82895 1.21769 1.02612 0.99698 0.92744 1.21525 1.00697 1.00326 0.92064 1.22121 0.81366 0.98793 0.94459 0.92309 1.22222 1.00751 1.01092 0.94873 1.21590 0.95415 1.00957 0.98144 1.22201 0.96295 1.02418 0.98616 1.22555 0.98255 0.95433 0.85377 1.87959 1.19672 1.76061 1.45859 0.95692 0.92368 0.93325 0.92681 0.93894 0.94943 0.92524 0.91264 0.91161 0.75401 0.75069 0.91092 0.90979 0.90096 0.91153 0.90532 0.90077 0.90897 0.90785 0.91472 0.91840 0.91023 0.90954 0.88845 0.93250 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 14. 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 -0.14 -3.00 7.53 37.16 0.28 -2.72 16 2 C 0.03 0.60 0.50 -155.67 -0.08 0.53 16 3 C -0.15 -3.11 7.52 37.16 0.28 -2.83 16 4 C -0.51 -13.70 8.62 -34.44 -0.30 -13.99 16 5 H 0.08 2.24 7.99 -52.49 -0.42 1.82 16 6 C 0.08 2.13 5.32 -17.82 -0.09 2.04 16 7 N -0.89 -26.47 13.96 55.43 0.77 -25.70 16 8 Si 0.88 21.20 22.79 -169.99 -3.87 17.33 16 9 H -0.29 -6.83 7.10 56.52 0.40 -6.43 16 10 H -0.30 -7.47 7.11 56.52 0.40 -7.07 16 11 H -0.25 -5.47 4.65 56.52 0.26 -5.21 16 12 C 0.14 2.74 4.49 -4.04 -0.02 2.73 16 13 N -0.69 -11.93 5.00 -60.73 -0.30 -12.24 16 14 C 0.50 8.32 7.89 -11.59 -0.09 8.23 16 15 O -0.53 -9.81 16.48 5.50 0.09 -9.72 16 16 C 0.51 7.44 7.89 -11.58 -0.09 7.35 16 17 O -0.52 -8.66 16.48 5.50 0.09 -8.56 16 18 N -0.71 -7.92 5.55 -60.73 -0.34 -8.26 16 19 C 0.12 1.03 5.67 -4.04 -0.02 1.01 16 20 C -0.13 -0.87 5.23 -26.73 -0.14 -1.01 16 21 C -0.11 -0.62 4.92 -26.73 -0.13 -0.75 16 22 C 0.09 0.55 2.64 -26.68 -0.07 0.48 16 23 H 0.06 0.34 8.14 -51.93 -0.42 -0.08 16 24 C -0.15 -0.76 5.42 -26.59 -0.14 -0.91 16 25 C -0.12 -0.56 6.03 -26.54 -0.16 -0.72 16 26 C -0.16 -0.74 6.14 -26.59 -0.16 -0.91 16 27 C 0.06 0.34 6.84 37.20 0.25 0.60 16 28 O -0.38 -2.93 9.94 -35.23 -0.35 -3.29 16 29 H 0.02 0.45 7.13 -51.93 -0.37 0.08 16 30 H 0.06 1.28 4.30 -51.93 -0.22 1.06 16 31 H 0.05 0.98 8.12 -51.93 -0.42 0.56 16 32 H 0.05 1.12 8.14 -51.93 -0.42 0.70 16 33 H 0.04 0.94 2.25 -51.93 -0.12 0.82 16 34 H 0.03 0.58 6.86 -51.93 -0.36 0.22 16 35 H 0.26 7.44 8.31 -40.82 -0.34 7.10 16 36 H 0.07 1.41 8.14 -51.93 -0.42 0.99 16 37 H 0.07 1.44 8.14 -51.93 -0.42 1.02 16 38 H 0.41 6.82 5.73 -40.82 -0.23 6.58 16 39 H 0.41 4.21 7.94 -40.82 -0.32 3.88 16 40 H 0.07 0.63 8.14 -51.93 -0.42 0.21 16 41 H 0.07 0.67 8.14 -51.93 -0.42 0.25 16 42 H 0.08 0.61 7.82 -51.93 -0.41 0.21 16 43 H 0.07 0.44 8.14 -51.93 -0.42 0.01 16 44 H 0.08 0.47 8.14 -51.93 -0.42 0.05 16 45 H 0.08 0.37 8.14 -51.93 -0.42 -0.05 16 46 H 0.07 0.40 8.14 -51.93 -0.42 -0.02 16 47 H 0.07 0.30 8.14 -51.93 -0.42 -0.12 16 48 H 0.07 0.27 8.14 -51.93 -0.42 -0.15 16 49 H 0.06 0.27 8.14 -51.93 -0.42 -0.15 16 50 H 0.07 0.38 8.14 -51.92 -0.42 -0.05 16 51 H 0.07 0.26 8.14 -51.93 -0.42 -0.16 16 52 H 0.09 0.46 8.14 -51.93 -0.42 0.03 16 53 H 0.05 0.25 8.14 -51.93 -0.42 -0.17 16 LS Contribution 406.57 15.07 6.13 6.13 Total: -1.00 -31.46 406.57 -7.80 -39.27 By element: Atomic # 1 Polarization: 15.26 SS G_CDS: -9.33 Total: 5.93 kcal Atomic # 6 Polarization: -0.20 SS G_CDS: -0.69 Total: -0.89 kcal Atomic # 7 Polarization: -46.33 SS G_CDS: 0.13 Total: -46.19 kcal Atomic # 8 Polarization: -21.40 SS G_CDS: -0.17 Total: -21.57 kcal Atomic # 14 Polarization: 21.20 SS G_CDS: -3.87 Total: 17.33 kcal Total LS contribution 6.13 Total: 6.13 kcal Total: -31.46 -7.80 -39.27 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. ZINC000422390836.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 -90.289 kcal (2) G-P(sol) polarization free energy of solvation -31.465 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -121.753 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -7.805 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -39.269 kcal (6) G-S(sol) free energy of system = (1) + (5) -129.558 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.72 seconds