Wall clock time and date at job start Sat Apr 11 2020 06:09:06 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 1.53000 * 1 3 3 C 1.53007 * 109.46557 * 2 1 4 4 C 1.50701 * 109.46837 * 179.97438 * 3 2 1 5 5 O 1.21287 * 120.00107 * 0.02562 * 4 3 2 6 6 N 1.34783 * 120.00031 * 179.97438 * 4 3 2 7 7 C 1.46925 * 120.62672 * 0.02562 * 6 4 3 8 8 C 1.53198 * 108.77197 * 233.62809 * 7 6 4 9 9 C 1.53035 * 109.31217 * 305.36797 * 8 7 6 10 10 C 1.53039 * 109.53976 * 61.36493 * 9 8 7 11 11 H 1.09003 * 109.49649 * 58.62131 * 10 9 8 12 12 C 1.50701 * 109.49995 * 178.67806 * 10 9 8 13 13 O 1.21289 * 119.99649 * 87.44028 * 12 10 9 14 14 N 1.34775 * 120.00496 * 267.44499 * 12 10 9 15 15 C 1.46499 * 119.99782 * 3.94400 * 14 12 10 16 16 C 1.50700 * 109.47326 * 84.34085 * 15 14 12 17 17 H 1.08007 * 119.99719 * 359.97438 * 16 15 14 18 18 C 1.37878 * 120.00349 * 179.97438 * 16 15 14 19 19 N 1.31508 * 119.99864 * 0.02562 * 18 16 15 20 20 Si 1.86800 * 120.00016 * 180.02562 * 18 16 15 21 21 H 1.48495 * 109.47351 * 59.99835 * 20 18 16 22 22 H 1.48500 * 109.46812 * 180.02562 * 20 18 16 23 23 H 1.48504 * 109.47090 * 299.99282 * 20 18 16 24 24 C 1.46499 * 120.00129 * 183.94250 * 14 12 10 25 25 C 1.52998 * 109.47295 * 264.71172 * 24 14 12 26 26 O 1.42900 * 109.47064 * 64.99874 * 25 24 14 27 27 C 1.42902 * 113.99937 * 179.97438 * 26 25 24 28 28 C 1.46926 * 120.63089 * 180.02562 * 6 4 3 29 29 H 1.08996 * 109.47216 * 300.00056 * 1 2 3 30 30 H 1.08998 * 109.47118 * 60.00215 * 1 2 3 31 31 H 1.09006 * 109.46875 * 180.02562 * 1 2 3 32 32 H 1.08998 * 109.47343 * 240.00476 * 2 1 3 33 33 H 1.08997 * 109.47531 * 119.99132 * 2 1 3 34 34 H 1.08996 * 109.47404 * 60.00058 * 3 2 1 35 35 H 1.08998 * 109.47230 * 299.99716 * 3 2 1 36 36 H 1.09003 * 109.58313 * 113.84563 * 7 6 4 37 37 H 1.09000 * 109.70580 * 353.48878 * 7 6 4 38 38 H 1.08998 * 109.49379 * 185.41765 * 8 7 6 39 39 H 1.09001 * 109.49455 * 65.32061 * 8 7 6 40 40 H 1.08998 * 109.46422 * 301.34392 * 9 8 7 41 41 H 1.09002 * 109.44735 * 181.37823 * 9 8 7 42 42 H 1.08999 * 109.47453 * 204.33679 * 15 14 12 43 43 H 1.08995 * 109.47218 * 324.34237 * 15 14 12 44 44 H 0.97002 * 120.00378 * 180.02562 * 19 18 16 45 45 H 1.08999 * 109.47280 * 24.71426 * 24 14 12 46 46 H 1.09004 * 109.47058 * 144.71130 * 24 14 12 47 47 H 1.09003 * 109.47482 * 184.99977 * 25 24 14 48 48 H 1.08995 * 109.47289 * 305.00155 * 25 24 14 49 49 H 1.08993 * 109.47377 * 300.00409 * 27 26 25 50 50 H 1.09003 * 109.46756 * 60.00572 * 27 26 25 51 51 H 1.09002 * 109.46769 * 180.02562 * 27 26 25 52 52 H 1.09005 * 109.58582 * 6.58605 * 28 6 4 53 53 H 1.08994 * 109.58311 * 246.16129 * 28 6 4 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 1.4426 0.0000 4 6 3.5469 1.4427 0.0006 5 8 4.1534 0.3923 0.0006 6 7 4.2208 2.6100 0.0002 7 6 3.5000 3.8903 -0.0003 8 6 4.0078 4.7414 -1.1685 9 6 5.5292 4.8765 -1.0725 10 6 6.1730 3.4914 -1.1683 11 1 5.8893 3.0227 -2.1107 12 6 7.6725 3.6284 -1.1064 13 8 8.2364 3.6414 -0.0326 14 7 8.3871 3.7365 -2.2440 15 6 7.7005 3.8078 -3.5362 16 6 7.2930 5.2325 -3.8105 17 1 7.5222 6.0073 -3.0938 18 6 6.6276 5.5470 -4.9765 19 7 6.3482 4.6035 -5.8490 20 14 6.1232 7.3131 -5.3169 21 1 7.3316 8.1755 -5.3496 22 1 5.4272 7.3854 -6.6266 23 1 5.2091 7.7822 -4.2446 24 6 9.8503 3.7826 -2.1884 25 6 10.3153 5.2402 -2.1964 26 8 9.8710 5.8885 -1.0030 27 6 10.2551 7.2618 -0.9100 28 6 5.6899 2.6262 0.0003 29 1 -0.3633 0.5138 0.8899 30 1 -0.3633 0.5138 -0.8900 31 1 -0.3633 -1.0277 0.0005 32 1 1.8934 -0.5137 -0.8900 33 1 1.8934 -0.5137 0.8900 34 1 1.6765 1.9564 0.8899 35 1 1.6766 1.9564 -0.8900 36 1 3.6826 4.4127 0.9388 37 1 2.4313 3.7104 -0.1166 38 1 3.5512 5.7302 -1.1236 39 1 3.7439 4.2607 -2.1105 40 1 5.7937 5.3347 -0.1196 41 1 5.8902 5.5020 -1.8889 42 1 8.3711 3.4638 -4.3235 43 1 6.8137 3.1746 -3.5119 44 1 5.8804 4.8247 -6.6695 45 1 10.1948 3.2964 -1.2758 46 1 10.2633 3.2647 -3.0541 47 1 11.4037 5.2742 -2.2447 48 1 9.8970 5.7503 -3.0641 49 1 11.3422 7.3373 -0.9314 50 1 9.8358 7.8140 -1.7511 51 1 9.8804 7.6814 0.0237 52 1 6.0666 1.6101 -0.1171 53 1 6.0506 3.0456 0.9394 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 ZINC000111661821.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 06:09:06 Heat of formation + Delta-G solvation = -132.113732 kcal Electronic energy + Delta-G solvation = -32171.926106 eV Core-core repulsion = 28043.234966 eV Total energy + Delta-G solvation = -4128.691140 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.220 amu Computer time = 1.86 seconds Orbital eigenvalues (eV) -40.24329 -39.09541 -37.36534 -36.66164 -34.90867 -34.45273 -32.82529 -32.47835 -31.10325 -29.57461 -28.06862 -27.08933 -25.90302 -24.95674 -23.96820 -22.93006 -21.99781 -21.86674 -20.58598 -18.70621 -18.12551 -16.98381 -16.67035 -16.46091 -16.02976 -15.86111 -15.60211 -15.26582 -14.94122 -14.69806 -14.48969 -14.14187 -14.03884 -13.81472 -13.73020 -13.29542 -12.91822 -12.78521 -12.70528 -12.36809 -12.22045 -12.06555 -12.00773 -11.79278 -11.75137 -11.50919 -11.40952 -11.27970 -11.06659 -10.97505 -10.81968 -10.78055 -10.71188 -10.59549 -10.37814 -10.20202 -10.01127 -9.67124 -9.59660 -9.12806 -8.87308 -8.53944 -8.35770 -7.65774 -6.20814 -4.26537 2.78553 3.12153 3.17917 3.24599 3.25922 3.52875 4.00939 4.29183 4.34124 4.56156 4.78992 4.91905 4.97400 5.10536 5.21930 5.24341 5.33876 5.39498 5.42611 5.47424 5.53010 5.54177 5.55200 5.64880 5.68330 5.77873 5.79632 5.84956 5.87155 5.91772 5.96291 6.01564 6.05753 6.07173 6.09248 6.16360 6.23608 6.29696 6.38488 6.49518 6.66345 6.72336 6.82410 6.93797 7.20955 7.53841 7.59119 7.72043 7.76403 8.05631 8.34367 8.39479 8.79673 9.14099 9.39997 10.85676 Molecular weight = 340.22amu Principal moments of inertia in cm(-1) A = 0.010653 B = 0.003846 C = 0.003245 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 2627.782801 B = 7279.448942 C = 8627.558335 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.152 4.152 2 C -0.110 4.110 3 C -0.139 4.139 4 C 0.512 3.488 5 O -0.546 6.546 6 N -0.608 5.608 7 C 0.106 3.894 8 C -0.131 4.131 9 C -0.109 4.109 10 C -0.111 4.111 11 H 0.100 0.900 12 C 0.532 3.468 13 O -0.560 6.560 14 N -0.594 5.594 15 C 0.237 3.763 16 C -0.529 4.529 17 H 0.064 0.936 18 C 0.067 3.933 19 N -0.890 5.890 20 Si 0.889 3.111 21 H -0.278 1.278 22 H -0.287 1.287 23 H -0.274 1.274 24 C 0.124 3.876 25 C 0.045 3.955 26 O -0.369 6.369 27 C 0.034 3.966 28 C 0.128 3.872 29 H 0.053 0.947 30 H 0.054 0.946 31 H 0.056 0.944 32 H 0.070 0.930 33 H 0.068 0.932 34 H 0.090 0.910 35 H 0.093 0.907 36 H 0.068 0.932 37 H 0.082 0.918 38 H 0.074 0.926 39 H 0.072 0.928 40 H 0.057 0.943 41 H 0.102 0.898 42 H 0.034 0.966 43 H 0.037 0.963 44 H 0.265 0.735 45 H 0.079 0.921 46 H 0.082 0.918 47 H 0.040 0.960 48 H 0.067 0.933 49 H 0.031 0.969 50 H 0.037 0.963 51 H 0.077 0.923 52 H 0.088 0.912 53 H 0.077 0.923 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -5.996 -0.224 8.326 10.263 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 -0.209 4.209 2 C -0.148 4.148 3 C -0.179 4.179 4 C 0.301 3.699 5 O -0.424 6.424 6 N -0.341 5.341 7 C -0.017 4.017 8 C -0.169 4.169 9 C -0.147 4.147 10 C -0.133 4.133 11 H 0.118 0.882 12 C 0.319 3.681 13 O -0.440 6.440 14 N -0.325 5.325 15 C 0.117 3.883 16 C -0.567 4.567 17 H 0.082 0.918 18 C -0.136 4.136 19 N -0.528 5.528 20 Si 0.717 3.283 21 H -0.203 1.203 22 H -0.212 1.212 23 H -0.200 1.200 24 C 0.000 4.000 25 C -0.033 4.033 26 O -0.287 6.287 27 C -0.063 4.063 28 C 0.006 3.994 29 H 0.072 0.928 30 H 0.074 0.926 31 H 0.075 0.925 32 H 0.088 0.912 33 H 0.086 0.914 34 H 0.108 0.892 35 H 0.112 0.888 36 H 0.086 0.914 37 H 0.100 0.900 38 H 0.093 0.907 39 H 0.091 0.909 40 H 0.076 0.924 41 H 0.120 0.880 42 H 0.052 0.948 43 H 0.055 0.945 44 H 0.075 0.925 45 H 0.097 0.903 46 H 0.100 0.900 47 H 0.058 0.942 48 H 0.085 0.915 49 H 0.049 0.951 50 H 0.056 0.944 51 H 0.095 0.905 52 H 0.106 0.894 53 H 0.095 0.905 Dipole moment (debyes) X Y Z Total from point charges -5.572 -0.925 8.818 10.472 hybrid contribution -0.104 1.517 -0.841 1.737 sum -5.676 0.592 7.977 9.808 Atomic orbital electron populations 1.21792 0.95649 1.01800 1.01700 1.21287 0.95047 0.94897 1.03552 1.21739 0.92131 0.99934 1.04114 1.20722 0.90254 0.83176 0.75778 1.90681 1.70462 1.30997 1.50215 1.48139 1.07160 1.05943 1.72906 1.21828 0.96217 0.84228 0.99464 1.21889 0.96934 0.99733 0.98380 1.21513 0.93728 0.95737 1.03744 1.21519 0.92909 0.98414 1.00481 0.88246 1.20079 0.88721 0.75660 0.83622 1.90600 1.72477 1.51990 1.28925 1.48085 1.05266 1.70642 1.08499 1.19452 0.92829 0.97452 0.78597 1.21436 1.37330 0.93666 1.04290 0.91822 1.24910 0.95662 0.97139 0.95900 1.69908 1.40518 1.32417 1.09945 0.86693 0.78912 0.85049 0.77643 1.20312 1.21235 1.19969 1.21289 0.82007 0.94412 1.02312 1.23021 0.96591 0.95074 0.88598 1.88057 1.77706 1.22467 1.40492 1.22628 0.98077 0.84138 1.01473 1.21448 0.78249 1.01309 0.98427 0.92822 0.92648 0.92535 0.91174 0.91370 0.89169 0.88848 0.91388 0.89999 0.90734 0.90913 0.92390 0.87963 0.94789 0.94483 0.92525 0.90252 0.89978 0.94173 0.91526 0.95088 0.94425 0.90477 0.89355 0.90512 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 12. 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 -0.15 -1.23 9.91 37.16 0.37 -0.86 16 2 C -0.11 -1.17 5.22 -26.73 -0.14 -1.31 16 3 C -0.14 -1.49 4.05 -27.88 -0.11 -1.60 16 4 C 0.51 7.77 7.70 -10.98 -0.08 7.69 16 5 O -0.55 -10.35 15.40 5.55 0.09 -10.27 16 6 N -0.61 -9.07 2.97 -172.74 -0.51 -9.59 16 7 C 0.11 1.25 6.34 -3.71 -0.02 1.23 16 8 C -0.13 -1.83 6.08 -26.61 -0.16 -2.00 16 9 C -0.11 -1.91 5.14 -26.69 -0.14 -2.05 16 10 C -0.11 -2.09 2.09 -91.64 -0.19 -2.29 16 11 H 0.10 2.03 5.89 -51.93 -0.31 1.73 16 12 C 0.53 11.22 6.42 -10.99 -0.07 11.15 16 13 O -0.56 -12.88 15.21 5.49 0.08 -12.80 16 14 N -0.59 -12.39 2.43 -175.06 -0.43 -12.82 16 15 C 0.24 5.39 5.00 -5.19 -0.03 5.37 16 16 C -0.53 -12.76 6.84 -34.44 -0.24 -13.00 16 17 H 0.06 1.59 7.30 -52.48 -0.38 1.20 16 18 C 0.07 1.67 5.46 -17.82 -0.10 1.57 16 19 N -0.89 -23.50 13.29 55.43 0.74 -22.76 16 20 Si 0.89 19.58 29.54 -169.99 -5.02 14.56 16 21 H -0.28 -6.13 7.11 56.52 0.40 -5.72 16 22 H -0.29 -6.36 7.11 56.52 0.40 -5.96 16 23 H -0.27 -5.92 7.11 56.52 0.40 -5.52 16 24 C 0.12 2.27 5.87 -4.04 -0.02 2.25 16 25 C 0.04 0.80 6.28 37.16 0.23 1.03 16 26 O -0.37 -7.14 9.97 -35.29 -0.35 -7.49 16 27 C 0.03 0.52 11.01 101.05 1.11 1.63 16 28 C 0.13 2.24 5.44 -3.70 -0.02 2.22 16 29 H 0.05 0.38 8.14 -51.93 -0.42 -0.04 16 30 H 0.05 0.42 8.14 -51.93 -0.42 0.00 16 31 H 0.06 0.43 8.14 -51.93 -0.42 0.00 16 32 H 0.07 0.85 8.10 -51.93 -0.42 0.42 16 33 H 0.07 0.78 8.10 -51.93 -0.42 0.36 16 34 H 0.09 0.77 7.94 -51.93 -0.41 0.36 16 35 H 0.09 0.88 7.70 -51.93 -0.40 0.48 16 36 H 0.07 0.74 8.14 -51.93 -0.42 0.32 16 37 H 0.08 0.74 5.94 -51.93 -0.31 0.43 16 38 H 0.07 0.91 8.14 -51.93 -0.42 0.49 16 39 H 0.07 1.11 8.14 -51.93 -0.42 0.69 16 40 H 0.06 0.99 8.14 -51.93 -0.42 0.57 16 41 H 0.10 2.07 5.55 -51.93 -0.29 1.78 16 42 H 0.03 0.81 7.89 -51.93 -0.41 0.40 16 43 H 0.04 0.90 5.93 -51.93 -0.31 0.59 16 44 H 0.26 6.75 8.31 -40.82 -0.34 6.41 16 45 H 0.08 1.48 7.32 -51.93 -0.38 1.10 16 46 H 0.08 1.33 7.94 -51.93 -0.41 0.92 16 47 H 0.04 0.60 8.14 -51.93 -0.42 0.18 16 48 H 0.07 1.29 7.48 -51.93 -0.39 0.90 16 49 H 0.03 0.40 8.14 -51.93 -0.42 -0.02 16 50 H 0.04 0.57 8.14 -51.93 -0.42 0.15 16 51 H 0.08 1.07 8.14 -51.93 -0.42 0.64 16 52 H 0.09 1.69 7.01 -51.93 -0.36 1.33 16 53 H 0.08 1.37 7.68 -51.93 -0.40 0.97 16 LS Contribution 414.62 15.07 6.25 6.25 Total: -1.00 -30.55 414.62 -8.15 -38.70 By element: Atomic # 1 Polarization: 14.55 SS G_CDS: -9.39 Total: 5.17 kcal Atomic # 6 Polarization: 10.66 SS G_CDS: 0.39 Total: 11.05 kcal Atomic # 7 Polarization: -44.97 SS G_CDS: -0.20 Total: -45.17 kcal Atomic # 8 Polarization: -30.37 SS G_CDS: -0.18 Total: -30.56 kcal Atomic # 14 Polarization: 19.58 SS G_CDS: -5.02 Total: 14.56 kcal Total LS contribution 6.25 Total: 6.25 kcal Total: -30.55 -8.15 -38.70 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. ZINC000111661821.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 -93.410 kcal (2) G-P(sol) polarization free energy of solvation -30.549 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -123.959 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -8.155 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -38.704 kcal (6) G-S(sol) free energy of system = (1) + (5) -132.114 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.86 seconds