Wall clock time and date at job start Mon Mar 8 2021 14:07:54 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= 0 * 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 1.52999 * 1 3 3 C 1.52998 * 109.47468 * 2 1 4 4 C 1.53006 * 109.47153 * 239.99841 * 2 1 3 5 5 C 1.53003 * 109.47060 * 120.00276 * 2 1 3 6 6 C 1.52972 * 109.43807 * 59.99696 * 5 2 1 7 7 C 1.53112 * 109.44632 * 181.64220 * 6 5 2 8 8 C 1.52849 * 109.22405 * 301.99346 * 7 6 5 9 9 C 1.53488 * 113.40417 * 285.94434 * 8 7 6 10 10 C 1.53540 * 83.17104 * 271.20029 * 9 8 7 11 11 N 1.46748 * 113.46658 * 187.28400 * 8 7 6 12 12 S 1.65604 * 136.09573 * 267.96655 * 11 8 7 13 13 O 1.42102 * 106.40211 * 22.72560 * 12 11 8 14 14 O 1.42099 * 106.40248 * 155.65036 * 12 11 8 15 15 C 1.76204 * 107.21285 * 269.18621 * 12 11 8 16 16 C 1.33391 * 122.53538 * 164.46668 * 15 12 11 17 17 C 1.50698 * 125.20448 * 0.02632 * 16 15 12 18 18 O 1.42897 * 109.47478 * 38.88783 * 17 16 15 19 19 Si 1.86293 * 109.47215 * 158.89402 * 17 16 15 20 20 S 1.75890 * 109.59268 * 179.90630 * 16 15 12 21 21 C 1.75890 * 90.96784 * 0.29871 * 20 16 15 22 22 C 1.33393 * 109.59456 * 359.83359 * 21 20 16 23 23 C 1.52850 * 112.68106 * 56.59870 * 8 7 6 24 24 C 1.52965 * 109.40020 * 180.19781 * 5 2 1 25 25 H 1.09004 * 109.46985 * 300.00414 * 1 2 3 26 26 H 1.09002 * 109.46854 * 59.99555 * 1 2 3 27 27 H 1.08997 * 109.47312 * 179.97438 * 1 2 3 28 28 H 1.08994 * 109.47611 * 179.97438 * 3 2 1 29 29 H 1.09002 * 109.47447 * 300.00082 * 3 2 1 30 30 H 1.09004 * 109.47356 * 59.99813 * 3 2 1 31 31 H 1.08997 * 109.47218 * 300.00310 * 4 2 1 32 32 H 1.09002 * 109.46747 * 60.00539 * 4 2 1 33 33 H 1.08994 * 109.47021 * 179.97438 * 4 2 1 34 34 H 1.09001 * 109.43241 * 300.08354 * 5 2 1 35 35 H 1.09005 * 109.47143 * 61.64700 * 6 5 2 36 36 H 1.09000 * 109.48062 * 301.64010 * 6 5 2 37 37 H 1.08992 * 109.51652 * 182.07021 * 7 6 5 38 38 H 1.09004 * 109.55635 * 61.93948 * 7 6 5 39 39 H 1.08995 * 114.40828 * 157.66254 * 9 8 7 40 40 H 1.08996 * 114.28132 * 24.72942 * 9 8 7 41 41 H 1.09001 * 113.45514 * 219.20560 * 10 9 8 42 42 H 1.08995 * 113.45990 * 88.80018 * 10 9 8 43 43 H 1.09008 * 109.47113 * 278.89114 * 17 16 15 44 44 H 0.96706 * 113.99614 * 65.68137 * 18 17 16 45 45 H 1.48502 * 110.00411 * 58.67983 * 19 17 16 46 46 H 1.48504 * 110.00087 * 180.02562 * 19 17 16 47 47 H 1.07998 * 125.19924 * 179.86357 * 21 20 16 48 48 H 1.07993 * 122.53554 * 180.02562 * 22 21 20 49 49 H 1.08997 * 109.51066 * 63.32116 * 23 8 7 50 50 H 1.08998 * 109.51465 * 183.48256 * 23 8 7 51 51 H 1.09008 * 109.47583 * 298.32962 * 24 5 2 52 52 H 1.09002 * 109.47953 * 58.33449 * 24 5 2 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 2.0401 1.4424 0.0000 4 6 2.0400 -0.7213 -1.2493 5 6 2.0400 -0.7213 1.2492 6 6 1.5296 -2.1634 1.2484 7 6 2.0058 -2.8734 2.5187 8 6 3.5324 -2.8266 2.5792 9 6 4.2114 -3.7846 1.5907 10 6 4.0937 -4.7776 2.7558 11 7 4.0987 -3.6262 3.6716 12 16 4.5412 -3.3542 5.2441 13 8 3.8120 -2.2131 5.6745 14 8 4.4763 -4.6119 5.9024 15 6 6.2395 -2.8849 5.2341 16 6 6.8305 -2.3079 6.2816 17 6 6.1558 -1.9819 7.5891 18 8 5.2553 -3.0357 7.9362 19 14 7.4428 -1.7999 8.9236 20 16 8.5187 -1.9889 5.9045 21 6 8.3186 -2.6692 4.2949 22 6 7.0599 -3.0816 4.1368 23 6 4.0811 -1.4012 2.5204 24 6 3.5696 -0.7161 1.2501 25 1 -0.3633 0.5139 0.8900 26 1 -0.3633 0.5139 -0.8900 27 1 -0.3634 -1.0276 -0.0005 28 1 3.1300 1.4425 0.0005 29 1 1.6768 1.9564 -0.8900 30 1 1.6767 1.9564 0.8900 31 1 1.6767 -1.7489 -1.2493 32 1 1.6767 -0.2074 -2.1392 33 1 3.1300 -0.7209 -1.2495 34 1 1.6751 -0.2079 2.1388 35 1 1.9168 -2.6854 0.3733 36 1 0.4400 -2.1633 1.2189 37 1 1.6738 -3.9114 2.5018 38 1 1.5913 -2.3727 3.3937 39 1 5.2360 -3.5155 1.3344 40 1 3.6026 -4.0390 0.7232 41 1 4.9652 -5.4230 2.8655 42 1 3.1551 -5.3317 2.7606 43 1 5.6016 -1.0486 7.4891 44 1 5.6904 -3.8781 8.1266 45 1 8.4042 -0.7283 8.5594 46 1 6.7901 -1.4789 10.2183 47 1 9.0961 -2.7422 3.5489 48 1 6.7079 -3.5352 3.2221 49 1 3.7438 -0.8449 3.3950 50 1 5.1706 -1.4308 2.5047 51 1 3.9354 -1.2534 0.3750 52 1 3.9296 0.3124 1.2217 There are 67 doubly filled levels RHF calculation, no. of doubly occupied orbitals= 67 No. of singly occupied orbitals= 1 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). S: (AM1): M.J.S. DEWAR, Y.-C. YUAN, INORGANIC CHEM., 29, 589 (1990) 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=0 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 s_40_17761002_14772022.mol2 52 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED SCF FIELD WAS ACHIEVED Wall clock time and date at job start Mon Mar 8 2021 14:07:54 Heat of formation + Delta-G solvation = -43.658123 kcal Electronic energy + Delta-G solvation = -34625.424843 eV Core-core repulsion = 30425.047319 eV Total energy + Delta-G solvation = -4200.377524 eV No. of doubly occupied orbitals = 67 and no. of open levels = 1 Molecular weight (most abundant/longest-lived isotopes) = 386.142 amu Computer time = 2.69 seconds Orbital eigenvalues (eV) -41.95469 -39.65001 -39.48708 -37.87123 -37.65412 -36.48942 -35.04147 -32.15116 -31.84924 -29.66489 -29.14606 -28.23000 -28.17200 -27.52935 -24.58455 -24.47207 -23.50802 -22.64471 -21.63972 -20.96575 -19.39674 -19.27052 -18.67194 -18.24449 -17.77208 -17.21448 -17.00546 -16.53327 -16.39683 -16.14193 -15.46644 -15.42324 -15.30588 -15.19045 -15.09699 -14.77962 -14.74145 -14.41941 -14.31288 -14.10988 -14.02395 -13.82272 -13.43781 -13.25243 -13.22250 -12.84933 -12.78251 -12.76061 -12.75806 -12.73973 -12.60374 -12.56341 -12.55458 -12.14690 -12.07519 -12.06052 -11.83097 -11.73887 -11.55323 -11.35689 -11.12484 -11.02431 -10.97884 -10.83463 -10.16314 -10.04410 -9.79608 -5.24190 -0.61915 -0.49830 0.32104 0.62333 1.00398 1.14599 1.43376 1.77833 2.00922 2.90660 3.13817 3.24387 3.31414 3.42452 3.56834 3.64778 3.71770 3.80307 3.90844 3.95118 4.00061 4.10930 4.21998 4.22731 4.30811 4.32261 4.33869 4.43749 4.49288 4.53329 4.55501 4.57606 4.70351 4.75374 4.78461 4.78857 4.82848 4.86654 4.89968 4.94949 4.96831 5.04548 5.06652 5.07443 5.10612 5.16328 5.16738 5.20576 5.22120 5.32178 5.34852 5.44797 5.56626 5.60056 5.63764 6.30222 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.145 4.145 2 C -0.064 4.064 3 C -0.146 4.146 4 C -0.146 4.146 5 C -0.080 4.080 6 C -0.112 4.112 7 C -0.121 4.121 8 C 0.192 3.808 9 C -0.147 4.147 10 C 0.126 3.874 11 N -1.043 6.043 12 S 2.741 3.259 13 O -0.941 6.941 14 O -0.946 6.946 15 C -0.660 4.660 16 C -0.101 4.101 17 C -0.070 4.070 18 O -0.532 6.532 19 Si 0.674 3.326 20 S 0.154 5.846 21 C -0.211 4.211 22 C -0.080 4.080 23 C -0.134 4.134 24 C -0.109 4.109 25 H 0.054 0.946 26 H 0.053 0.947 27 H 0.058 0.942 28 H 0.058 0.942 29 H 0.053 0.947 30 H 0.054 0.946 31 H 0.058 0.942 32 H 0.052 0.948 33 H 0.057 0.943 34 H 0.072 0.928 35 H 0.071 0.929 36 H 0.072 0.928 37 H 0.073 0.927 38 H 0.074 0.926 39 H 0.094 0.906 40 H 0.090 0.910 41 H 0.079 0.921 42 H 0.089 0.911 43 H 0.145 0.855 44 H 0.390 0.610 45 H -0.231 1.231 46 H -0.224 1.224 47 H 0.175 0.825 48 H 0.150 0.850 49 H 0.077 0.923 50 H 0.069 0.931 51 H 0.070 0.930 52 H 0.070 0.930 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges 3.524 -1.183 -4.888 6.141 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 -0.203 4.203 2 C -0.064 4.064 3 C -0.203 4.203 4 C -0.203 4.203 5 C -0.098 4.098 6 C -0.150 4.150 7 C -0.160 4.160 8 C 0.105 3.895 9 C -0.186 4.186 10 C 0.000 4.000 11 N -0.882 5.882 12 S 2.829 3.171 13 O -0.931 6.931 14 O -0.937 6.937 15 C -0.758 4.758 16 C -0.222 4.222 17 C -0.182 4.182 18 O -0.339 6.339 19 Si 0.571 3.429 20 S 0.418 5.582 21 C -0.347 4.347 22 C -0.108 4.108 23 C -0.172 4.172 24 C -0.147 4.147 25 H 0.073 0.927 26 H 0.072 0.928 27 H 0.077 0.923 28 H 0.076 0.924 29 H 0.073 0.927 30 H 0.073 0.927 31 H 0.077 0.923 32 H 0.071 0.929 33 H 0.076 0.924 34 H 0.091 0.909 35 H 0.089 0.911 36 H 0.090 0.910 37 H 0.092 0.908 38 H 0.092 0.908 39 H 0.113 0.887 40 H 0.108 0.892 41 H 0.097 0.903 42 H 0.107 0.893 43 H 0.162 0.838 44 H 0.240 0.760 45 H -0.155 1.155 46 H -0.147 1.147 47 H 0.192 0.808 48 H 0.168 0.832 49 H 0.096 0.904 50 H 0.088 0.912 51 H 0.089 0.911 52 H 0.088 0.912 Dipole moment (debyes) X Y Z Total from point charges 4.295 0.414 -2.604 5.040 hybrid contribution -0.680 -0.217 -1.445 1.612 sum 3.615 0.197 -4.050 5.432 Atomic orbital electron populations 1.21948 0.94619 1.01936 1.01751 1.20530 0.95508 0.95307 0.95026 1.21950 1.01164 0.95413 1.01749 1.21987 1.01140 1.00366 0.96784 1.21213 0.95092 0.95689 0.97802 1.21687 1.01065 0.95178 0.97100 1.21767 0.92925 1.01741 0.99586 1.21248 0.93734 0.91765 0.82718 1.23651 1.02003 0.96239 0.96733 1.22494 1.02665 0.89056 0.85745 1.60312 1.77173 1.21607 1.29094 1.00756 0.72712 0.73808 0.69829 1.93556 1.69093 1.52159 1.78309 1.93554 1.86262 1.43242 1.70620 1.29995 1.28348 1.17470 0.99958 1.24998 0.97895 1.00062 0.99208 1.25105 1.01192 0.94984 0.96914 1.86571 1.34958 1.22414 1.89981 0.94714 0.79456 0.89444 0.79271 1.84474 1.05923 1.58150 1.09673 1.25867 1.01243 1.06881 1.00667 1.19673 0.92351 1.00878 0.97932 1.21913 1.00580 0.94585 1.00153 1.21624 0.95335 1.00804 0.96965 0.92692 0.92764 0.92270 0.92350 0.92749 0.92705 0.92311 0.92911 0.92378 0.90943 0.91089 0.90960 0.90827 0.90763 0.88716 0.89186 0.90283 0.89338 0.83798 0.76022 1.15494 1.14710 0.80788 0.83221 0.90448 0.91239 0.91117 0.91156 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 30. 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 0.13 8.12 37.16 0.30 0.44 16 2 C -0.06 0.08 0.57 -154.51 -0.09 -0.01 16 3 C -0.15 0.12 8.12 37.16 0.30 0.42 16 4 C -0.15 0.25 7.77 37.16 0.29 0.54 16 5 C -0.08 0.09 1.50 -90.65 -0.14 -0.05 16 6 C -0.11 0.18 4.41 -26.69 -0.12 0.07 16 7 C -0.12 0.05 5.26 -26.75 -0.14 -0.09 16 8 C 0.19 -0.09 1.04 -137.12 -0.14 -0.23 16 9 C -0.15 0.43 7.17 -26.20 -0.19 0.24 16 10 C 0.13 -0.20 8.36 -8.96 -0.07 -0.28 16 11 N -1.04 -1.10 3.28 -112.13 -0.37 -1.46 16 12 S 2.74 11.54 4.59 -107.50 -0.49 11.04 16 13 O -0.94 -6.57 16.70 -62.88 -1.05 -7.62 16 14 O -0.95 -6.08 16.93 -64.74 -1.10 -7.18 16 15 C -0.66 -1.58 5.72 -41.21 -0.24 -1.81 16 16 C -0.10 -0.20 5.77 -36.00 -0.21 -0.40 16 17 C -0.07 -0.13 2.36 36.00 0.08 -0.04 16 18 O -0.53 -1.64 9.69 -60.48 -0.59 -2.23 16 19 Si 0.67 -0.38 31.10 -169.99 -5.29 -5.67 16 20 S 0.15 0.01 20.87 -107.50 -2.24 -2.24 16 21 C -0.21 0.14 11.23 29.04 0.33 0.46 16 22 C -0.08 -0.02 9.74 -41.21 -0.40 -0.42 16 23 C -0.13 0.01 5.30 -26.74 -0.14 -0.13 16 24 C -0.11 0.15 4.41 -26.68 -0.12 0.03 16 25 H 0.05 -0.02 8.14 -51.93 -0.42 -0.45 16 26 H 0.05 -0.04 8.14 -51.93 -0.42 -0.46 16 27 H 0.06 -0.07 6.39 -51.93 -0.33 -0.40 16 28 H 0.06 -0.06 6.38 -51.93 -0.33 -0.39 16 29 H 0.05 -0.04 8.14 -51.93 -0.42 -0.46 16 30 H 0.05 -0.02 8.14 -51.93 -0.42 -0.44 16 31 H 0.06 -0.12 6.46 -51.93 -0.34 -0.45 16 32 H 0.05 -0.06 8.14 -51.93 -0.42 -0.49 16 33 H 0.06 -0.11 6.47 -51.93 -0.34 -0.45 16 34 H 0.07 0.02 8.14 -51.93 -0.42 -0.40 16 35 H 0.07 -0.18 5.73 -51.93 -0.30 -0.48 16 36 H 0.07 -0.11 6.34 -51.93 -0.33 -0.44 16 37 H 0.07 -0.09 7.01 -51.93 -0.36 -0.45 16 38 H 0.07 0.11 8.14 -51.93 -0.42 -0.32 16 39 H 0.09 -0.37 8.10 -51.93 -0.42 -0.79 16 40 H 0.09 -0.37 7.36 -51.93 -0.38 -0.75 16 41 H 0.08 -0.22 8.14 -51.93 -0.42 -0.64 16 42 H 0.09 -0.20 7.28 -51.93 -0.38 -0.58 16 43 H 0.15 0.31 7.96 -51.92 -0.41 -0.10 16 44 H 0.39 -0.20 8.50 45.56 0.39 0.18 16 45 H -0.23 -0.12 7.11 56.52 0.40 0.28 16 46 H -0.22 -0.36 7.11 56.52 0.40 0.04 16 47 H 0.17 -0.55 8.06 -52.49 -0.42 -0.98 16 48 H 0.15 -0.29 7.75 -52.49 -0.41 -0.70 16 49 H 0.08 0.16 7.89 -51.93 -0.41 -0.25 16 50 H 0.07 -0.04 8.13 -51.93 -0.42 -0.46 16 51 H 0.07 -0.16 6.32 -51.92 -0.33 -0.49 16 52 H 0.07 -0.08 6.33 -51.93 -0.33 -0.41 16 LS Contribution 407.81 15.07 6.15 6.15 Total: 0.00 -8.11 407.81 -14.10 -22.21 By element: Atomic # 1 Polarization: -3.29 SS G_CDS: -8.43 Total: -11.72 kcal Atomic # 6 Polarization: -0.59 SS G_CDS: -0.69 Total: -1.28 kcal Atomic # 7 Polarization: -1.10 SS G_CDS: -0.37 Total: -1.46 kcal Atomic # 8 Polarization: -14.29 SS G_CDS: -2.73 Total: -17.02 kcal Atomic # 14 Polarization: -0.38 SS G_CDS: -5.29 Total: -5.67 kcal Atomic # 16 Polarization: 11.54 SS G_CDS: -2.74 Total: 8.80 kcal Total LS contribution 6.15 Total: 6.15 kcal Total: -8.11 -14.10 -22.21 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. s_40_17761002_14772022.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 -21.452 kcal (2) G-P(sol) polarization free energy of solvation -8.108 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -29.560 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -14.098 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -22.206 kcal (6) G-S(sol) free energy of system = (1) + (5) -43.658 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 2.69 seconds