Wall clock time and date at job start Sat Apr 11 2020 06:11:01 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 1.42903 * 1 3 3 C 1.42898 * 113.99648 * 2 1 4 4 C 1.53000 * 109.46894 * 205.76834 * 3 2 1 5 5 N 1.46505 * 109.47290 * 300.00193 * 4 3 2 6 6 C 1.46842 * 124.36787 * 90.02384 * 5 4 3 7 7 C 1.54638 * 105.50308 * 196.85940 * 6 5 4 8 8 C 1.53897 * 101.58984 * 335.22377 * 7 6 5 9 9 C 1.53593 * 110.33522 * 143.78503 * 8 7 6 10 10 C 1.55321 * 102.79765 * 99.55051 * 9 8 7 11 11 C 1.54983 * 101.73922 * 35.03338 * 10 9 8 12 12 N 1.46650 * 110.87253 * 263.47199 * 8 7 6 13 13 C 1.46901 * 110.99675 * 115.73249 * 12 8 7 14 14 C 1.53003 * 109.47173 * 169.99724 * 13 12 8 15 15 C 1.53005 * 109.47102 * 179.97438 * 14 13 12 16 16 C 1.50698 * 109.46763 * 180.02562 * 15 14 13 17 17 H 1.08002 * 120.00473 * 359.97438 * 16 15 14 18 18 C 1.37875 * 120.00055 * 180.02562 * 16 15 14 19 19 N 1.31516 * 120.00594 * 179.97438 * 18 16 15 20 20 Si 1.86810 * 119.99709 * 359.97438 * 18 16 15 21 21 H 1.48494 * 109.46982 * 90.00636 * 20 18 16 22 22 H 1.48496 * 109.46882 * 210.00253 * 20 18 16 23 23 H 1.48499 * 109.46915 * 330.00195 * 20 18 16 24 24 C 1.34662 * 124.36753 * 269.72635 * 5 4 3 25 25 O 1.21279 * 125.07480 * 359.15751 * 24 5 4 26 26 O 1.42896 * 109.47018 * 85.76951 * 3 2 1 27 27 C 1.42892 * 114.00268 * 286.09921 * 26 3 2 28 28 H 1.09002 * 109.47374 * 66.53579 * 1 2 3 29 29 H 1.08997 * 109.47213 * 186.53208 * 1 2 3 30 30 H 1.08995 * 109.47285 * 306.53564 * 1 2 3 31 31 H 1.09000 * 109.47720 * 325.76544 * 3 2 1 32 32 H 1.08998 * 109.47712 * 60.00309 * 4 3 2 33 33 H 1.09004 * 109.47279 * 180.02562 * 4 3 2 34 34 H 1.09003 * 110.24120 * 315.86587 * 6 5 4 35 35 H 1.09001 * 110.24201 * 77.76080 * 6 5 4 36 36 H 1.08999 * 111.00621 * 93.30250 * 7 6 5 37 37 H 1.09005 * 111.00137 * 217.10589 * 7 6 5 38 38 H 1.09001 * 110.74893 * 217.87384 * 9 8 7 39 39 H 1.08999 * 110.75298 * 341.22338 * 9 8 7 40 40 H 1.09000 * 110.97292 * 276.92115 * 10 9 8 41 41 H 1.09001 * 110.97425 * 153.14098 * 10 9 8 42 42 H 1.08994 * 110.36655 * 204.50382 * 11 10 9 43 43 H 1.08997 * 110.36621 * 82.17866 * 11 10 9 44 44 H 1.09004 * 109.47324 * 289.99352 * 13 12 8 45 45 H 1.08993 * 109.47354 * 49.99607 * 13 12 8 46 46 H 1.09001 * 109.47592 * 299.99984 * 14 13 12 47 47 H 1.09001 * 109.47033 * 60.00078 * 14 13 12 48 48 H 1.09004 * 109.46889 * 299.99677 * 15 14 13 49 49 H 1.08993 * 109.47335 * 59.99938 * 15 14 13 50 50 H 0.97001 * 120.00322 * 179.97438 * 19 18 16 51 51 H 1.08999 * 109.47206 * 316.32438 * 27 26 3 52 52 H 1.08998 * 109.47269 * 76.32272 * 27 26 3 53 53 H 1.09003 * 109.47773 * 196.32186 * 27 26 3 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 1.4290 0.0000 0.0000 3 6 2.0102 1.3055 0.0000 4 6 3.4043 1.2430 -0.6271 5 7 4.2490 0.3324 0.1499 6 6 4.3720 -1.1078 -0.1087 7 6 4.9914 -1.7069 1.1753 8 6 5.7270 -0.4887 1.7612 9 6 5.6444 -0.5021 3.2948 10 6 7.0232 -1.0851 3.7086 11 6 7.9550 -0.4937 2.6205 12 7 7.1436 -0.5018 1.3820 13 6 7.4712 0.6497 0.5306 14 6 8.9890 0.7433 0.3612 15 6 9.3301 1.9422 -0.5261 16 6 10.8250 2.0340 -0.6933 17 1 11.4675 1.3100 -0.2143 18 6 11.3726 3.0430 -1.4569 19 7 12.6772 3.1235 -1.6025 20 14 10.2613 4.2957 -2.2849 21 1 10.0432 5.4449 -1.3701 22 1 10.9012 4.7741 -3.5366 23 1 8.9564 3.6639 -2.6061 24 6 5.0172 0.7092 1.1897 25 8 5.1199 1.8440 1.6052 26 8 2.1131 1.7810 1.3436 27 6 0.8654 2.1749 1.9179 28 1 -0.3634 0.4092 -0.9427 29 1 -0.3633 -1.0210 0.1169 30 1 -0.3633 0.6118 0.8257 31 1 1.3818 1.9830 -0.5781 32 1 3.3259 0.8803 -1.6520 33 1 3.8479 2.2387 -0.6267 34 1 3.3897 -1.5432 -0.2922 35 1 5.0269 -1.2832 -0.9622 36 1 4.2160 -2.0593 1.8555 37 1 5.6905 -2.5079 0.9348 38 1 5.5201 0.5086 3.6836 39 1 4.8346 -1.1490 3.6323 40 1 7.0152 -2.1742 3.6655 41 1 7.3120 -0.7374 4.7005 42 1 8.8399 -1.1182 2.4986 43 1 8.2418 0.5255 2.8797 44 1 7.0038 0.5241 -0.4461 45 1 7.1005 1.5629 0.9960 46 1 9.4565 0.8689 1.3378 47 1 9.3596 -0.1699 -0.1043 48 1 8.8627 1.8161 -1.5027 49 1 8.9594 2.8556 -0.0610 50 1 13.0623 3.8331 -2.1401 51 1 0.2980 2.7559 1.1908 52 1 0.2973 1.2874 2.1967 53 1 1.0489 2.7821 2.8044 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 ZINC001274039819.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 06:11:01 Heat of formation + Delta-G solvation = -107.216596 kcal Electronic energy + Delta-G solvation = -32386.284647 eV Core-core repulsion = 28258.673128 eV Total energy + Delta-G solvation = -4127.611519 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.220 amu Computer time = 0.68 seconds Orbital eigenvalues (eV) -41.29256 -39.52201 -37.62639 -36.30568 -36.17400 -34.46447 -32.60817 -32.25154 -30.35561 -29.31759 -27.93798 -26.95279 -26.40516 -26.37801 -24.02327 -23.16865 -22.39028 -21.34840 -20.82484 -19.51880 -18.71484 -17.70103 -17.64324 -16.79368 -16.66674 -16.07500 -16.05059 -15.53471 -15.09051 -14.76247 -14.67848 -14.35027 -14.12498 -14.00375 -13.95793 -13.65665 -13.46984 -13.20934 -12.77219 -12.66898 -12.57368 -12.50911 -12.32442 -12.03191 -11.79670 -11.78728 -11.70511 -11.59369 -11.30486 -11.01445 -10.92413 -10.73906 -10.56670 -10.55513 -10.35698 -10.15756 -9.88777 -9.75338 -9.58496 -9.50590 -9.08713 -8.66054 -8.46344 -8.02138 -5.97359 -3.94400 2.67922 2.88233 3.30487 3.36973 3.43216 3.48191 3.48640 4.12609 4.32195 4.36081 4.51551 4.52353 4.62291 4.73056 4.76645 4.86401 4.89381 4.90516 5.02021 5.06418 5.13411 5.18069 5.21546 5.27999 5.37017 5.40367 5.42223 5.57956 5.62146 5.72550 5.78036 5.83292 5.88434 5.93314 6.00975 6.05790 6.18379 6.25456 6.29670 6.49548 6.61423 6.65104 6.69183 6.80620 6.96017 7.16822 7.21636 7.29279 7.42944 7.54725 7.87821 8.34407 8.62273 9.08123 9.65950 11.16212 Molecular weight = 340.22amu Principal moments of inertia in cm(-1) A = 0.012053 B = 0.003391 C = 0.002911 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 2322.463432 B = 8254.192924 C = 9616.237193 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C 0.016 3.984 2 O -0.387 6.387 3 C 0.224 3.776 4 C 0.144 3.856 5 N -0.608 5.608 6 C 0.108 3.892 7 C -0.112 4.112 8 C 0.066 3.934 9 C -0.120 4.120 10 C -0.127 4.127 11 C 0.040 3.960 12 N -0.496 5.496 13 C 0.029 3.971 14 C -0.098 4.098 15 C -0.011 4.011 16 C -0.515 4.515 17 H 0.072 0.928 18 C 0.065 3.935 19 N -0.906 5.906 20 Si 0.879 3.121 21 H -0.277 1.277 22 H -0.288 1.288 23 H -0.266 1.266 24 C 0.527 3.473 25 O -0.515 6.515 26 O -0.371 6.371 27 C 0.024 3.976 28 H 0.042 0.958 29 H 0.087 0.913 30 H 0.047 0.953 31 H 0.062 0.938 32 H 0.100 0.900 33 H 0.103 0.897 34 H 0.082 0.918 35 H 0.070 0.930 36 H 0.079 0.921 37 H 0.098 0.902 38 H 0.077 0.923 39 H 0.076 0.924 40 H 0.075 0.925 41 H 0.074 0.926 42 H 0.087 0.913 43 H 0.055 0.945 44 H 0.067 0.933 45 H 0.053 0.947 46 H 0.055 0.945 47 H 0.060 0.940 48 H 0.014 0.986 49 H 0.009 0.991 50 H 0.262 0.738 51 H 0.040 0.960 52 H 0.045 0.955 53 H 0.085 0.915 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -28.305 -10.153 6.062 30.676 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 -0.080 4.080 2 O -0.307 6.307 3 C 0.127 3.873 4 C 0.021 3.979 5 N -0.342 5.342 6 C -0.015 4.015 7 C -0.150 4.150 8 C -0.027 4.027 9 C -0.159 4.159 10 C -0.165 4.165 11 C -0.087 4.087 12 N -0.221 5.221 13 C -0.098 4.098 14 C -0.136 4.136 15 C -0.049 4.049 16 C -0.553 4.553 17 H 0.090 0.910 18 C -0.135 4.135 19 N -0.545 5.545 20 Si 0.707 3.293 21 H -0.203 1.203 22 H -0.214 1.214 23 H -0.191 1.191 24 C 0.314 3.686 25 O -0.389 6.389 26 O -0.291 6.291 27 C -0.072 4.072 28 H 0.061 0.939 29 H 0.106 0.894 30 H 0.066 0.934 31 H 0.079 0.921 32 H 0.118 0.882 33 H 0.121 0.879 34 H 0.100 0.900 35 H 0.088 0.912 36 H 0.097 0.903 37 H 0.117 0.883 38 H 0.096 0.904 39 H 0.094 0.906 40 H 0.093 0.907 41 H 0.092 0.908 42 H 0.105 0.895 43 H 0.074 0.926 44 H 0.085 0.915 45 H 0.071 0.929 46 H 0.074 0.926 47 H 0.079 0.921 48 H 0.032 0.968 49 H 0.027 0.973 50 H 0.072 0.928 51 H 0.059 0.941 52 H 0.064 0.936 53 H 0.104 0.896 Dipole moment (debyes) X Y Z Total from point charges -27.753 -9.977 5.942 30.085 hybrid contribution -1.321 1.747 -0.323 2.214 sum -29.074 -8.230 5.620 30.735 Atomic orbital electron populations 1.23069 0.81395 1.03312 1.00214 1.88060 1.19451 1.29330 1.93873 1.24036 0.95710 0.83016 0.84525 1.21391 0.86092 0.96055 0.94344 1.47977 1.44416 1.09196 1.32644 1.22132 1.01391 0.79538 0.98392 1.22600 0.99099 0.97247 0.96087 1.21987 0.90763 0.94056 0.95891 1.22663 0.98405 1.02360 0.92463 1.22757 0.94261 1.00754 0.98724 1.23183 0.96864 1.00722 0.87969 1.63940 0.99902 1.42195 1.16040 1.22780 0.99374 0.91233 0.96427 1.21517 0.91119 1.00335 1.00599 1.19525 0.97475 0.93276 0.94668 1.21144 0.90214 1.13245 1.30746 0.91019 1.25023 0.94835 0.97543 0.96121 1.69919 1.10321 1.33526 1.40748 0.86784 0.81417 0.82007 0.79138 1.20324 1.21443 1.19081 1.20727 0.78282 0.89869 0.79752 1.90703 1.63655 1.21951 1.62562 1.88235 1.29689 1.82050 1.29120 1.22950 0.86550 0.98875 0.98814 0.93896 0.89440 0.93442 0.92056 0.88199 0.87909 0.90007 0.91186 0.90292 0.88317 0.90428 0.90579 0.90653 0.90764 0.89520 0.92633 0.91502 0.92900 0.92629 0.92122 0.96813 0.97258 0.92840 0.94136 0.93649 0.89632 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 0.02 0.10 10.68 101.05 1.08 1.18 16 2 O -0.39 -3.69 9.46 -59.04 -0.56 -4.25 16 3 C 0.22 2.26 3.15 37.16 0.12 2.37 16 4 C 0.14 1.60 6.07 -4.04 -0.02 1.58 16 5 N -0.61 -7.96 2.76 -172.50 -0.48 -8.44 16 6 C 0.11 1.15 7.20 -2.99 -0.02 1.13 16 7 C -0.11 -1.20 6.42 -25.40 -0.16 -1.36 16 8 C 0.07 0.92 1.00 -132.20 -0.13 0.79 16 9 C -0.12 -1.51 6.05 -25.19 -0.15 -1.66 16 10 C -0.13 -1.45 7.08 -24.45 -0.17 -1.62 16 11 C 0.04 0.58 5.33 -2.13 -0.01 0.57 16 12 N -0.50 -7.72 4.95 -217.43 -1.08 -8.80 16 13 C 0.03 0.54 3.97 -3.82 -0.02 0.53 16 14 C -0.10 -2.10 4.83 -26.73 -0.13 -2.23 16 15 C -0.01 -0.29 4.04 -27.88 -0.11 -0.41 16 16 C -0.52 -15.37 9.66 -34.44 -0.33 -15.70 16 17 H 0.07 2.28 7.99 -52.49 -0.42 1.86 16 18 C 0.07 1.98 5.47 -17.82 -0.10 1.89 16 19 N -0.91 -28.81 13.96 55.43 0.77 -28.04 16 20 Si 0.88 22.78 27.47 -169.99 -4.67 18.11 16 21 H -0.28 -7.10 7.11 56.52 0.40 -6.70 16 22 H -0.29 -7.31 7.11 56.52 0.40 -6.91 16 23 H -0.27 -6.67 6.54 56.52 0.37 -6.30 16 24 C 0.53 8.44 4.41 -11.13 -0.05 8.39 16 25 O -0.51 -10.16 15.40 5.56 0.09 -10.07 16 26 O -0.37 -4.65 9.97 -59.05 -0.59 -5.24 16 27 C 0.02 0.21 9.76 101.05 0.99 1.20 16 28 H 0.04 0.21 8.14 -51.93 -0.42 -0.21 16 29 H 0.09 0.45 8.14 -51.93 -0.42 0.03 16 30 H 0.05 0.27 4.80 -51.93 -0.25 0.02 16 31 H 0.06 0.48 7.56 -51.93 -0.39 0.09 16 32 H 0.10 0.84 8.14 -51.93 -0.42 0.42 16 33 H 0.10 1.27 7.92 -51.93 -0.41 0.86 16 34 H 0.08 0.76 7.31 -51.93 -0.38 0.38 16 35 H 0.07 0.74 8.14 -51.93 -0.42 0.32 16 36 H 0.08 0.74 7.45 -51.93 -0.39 0.35 16 37 H 0.10 1.00 8.07 -51.93 -0.42 0.58 16 38 H 0.08 1.13 7.52 -51.93 -0.39 0.74 16 39 H 0.08 0.80 7.39 -51.93 -0.38 0.42 16 40 H 0.07 0.75 8.14 -51.93 -0.42 0.33 16 41 H 0.07 0.76 8.14 -51.93 -0.42 0.34 16 42 H 0.09 1.22 8.14 -51.93 -0.42 0.80 16 43 H 0.06 0.91 7.03 -51.93 -0.37 0.54 16 44 H 0.07 1.26 7.94 -51.93 -0.41 0.85 16 45 H 0.05 1.11 5.78 -51.93 -0.30 0.81 16 46 H 0.06 1.19 6.49 -51.93 -0.34 0.85 16 47 H 0.06 1.30 8.14 -51.93 -0.42 0.88 16 48 H 0.01 0.35 7.20 -51.93 -0.37 -0.03 16 49 H 0.01 0.24 7.57 -51.93 -0.39 -0.15 16 50 H 0.26 7.79 8.31 -40.82 -0.34 7.45 16 51 H 0.04 0.27 7.80 -51.93 -0.41 -0.14 16 52 H 0.05 0.34 6.27 -51.93 -0.33 0.02 16 53 H 0.09 0.70 8.14 -51.93 -0.42 0.28 16 LS Contribution 403.54 15.07 6.08 6.08 Total: -1.00 -36.26 403.54 -8.98 -45.24 By element: Atomic # 1 Polarization: 8.07 SS G_CDS: -9.32 Total: -1.24 kcal Atomic # 6 Polarization: -4.12 SS G_CDS: 0.77 Total: -3.35 kcal Atomic # 7 Polarization: -44.50 SS G_CDS: -0.78 Total: -45.27 kcal Atomic # 8 Polarization: -18.50 SS G_CDS: -1.06 Total: -19.56 kcal Atomic # 14 Polarization: 22.78 SS G_CDS: -4.67 Total: 18.11 kcal Total LS contribution 6.08 Total: 6.08 kcal Total: -36.26 -8.98 -45.24 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. ZINC001274039819.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 -61.980 kcal (2) G-P(sol) polarization free energy of solvation -36.260 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -98.240 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -8.976 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -45.236 kcal (6) G-S(sol) free energy of system = (1) + (5) -107.217 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.68 seconds