Wall clock time and date at job start Sun Mar 7 2021 05:32:34 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 O 1.42896 * 1 3 3 C 1.35663 * 117.00242 * 2 1 4 4 C 1.38397 * 120.11576 * 0.02562 * 3 2 1 5 5 C 1.38731 * 120.03067 * 179.97438 * 4 3 2 6 6 O 1.35718 * 119.86269 * 179.97438 * 5 4 3 7 7 C 1.42901 * 116.99867 * 0.02562 * 6 5 4 8 8 C 1.39143 * 120.27410 * 0.02562 * 5 4 3 9 9 C 1.50689 * 119.88123 * 179.97438 * 8 5 4 10 10 O 1.42902 * 109.47137 * 284.99898 * 9 8 5 11 11 Si 1.86303 * 109.47498 * 164.99950 * 9 8 5 12 12 C 1.37588 * 120.23613 * 359.67040 * 8 5 4 13 13 C 1.39820 * 119.96551 * 0.62896 * 12 8 5 14 14 C 1.47293 * 120.13487 * 179.67328 * 13 12 8 15 15 O 1.21622 * 119.99912 * 179.72581 * 14 13 12 16 16 N 1.34777 * 120.00207 * 359.72446 * 14 13 12 17 17 C 1.46500 * 120.00270 * 180.02562 * 16 14 13 18 18 H 1.09002 * 109.47129 * 34.99540 * 17 16 14 19 19 C 1.52997 * 109.47473 * 154.99797 * 17 16 14 20 20 C 1.53000 * 109.47060 * 180.02562 * 19 17 16 21 21 C 1.53002 * 109.47233 * 299.99657 * 20 19 17 22 22 H 1.09002 * 109.47075 * 300.00932 * 21 20 19 23 23 C 1.50693 * 109.47531 * 180.02562 * 21 20 19 24 24 N 1.30523 * 126.34378 * 95.02303 * 23 21 20 25 25 N 1.28601 * 109.67221 * 179.97438 * 24 23 21 26 26 C 1.30522 * 109.67075 * 359.97438 * 25 24 23 27 27 N 1.35490 * 126.34777 * 274.72068 * 23 21 20 28 28 C 1.52997 * 109.46817 * 60.00194 * 21 20 19 29 29 C 1.52999 * 109.46944 * 275.00142 * 17 16 14 30 30 H 1.09000 * 109.47372 * 179.97438 * 1 2 3 31 31 H 1.08995 * 109.47167 * 299.99961 * 1 2 3 32 32 H 1.09000 * 109.47081 * 60.00300 * 1 2 3 33 33 H 1.08002 * 119.98921 * 359.97438 * 4 3 2 34 34 H 1.08994 * 109.46893 * 299.99612 * 7 6 5 35 35 H 1.08998 * 109.47144 * 60.00094 * 7 6 5 36 36 H 1.09006 * 109.47071 * 179.97438 * 7 6 5 37 37 H 1.09008 * 109.47498 * 44.99736 * 9 8 5 38 38 H 0.96696 * 113.99699 * 299.99586 * 10 9 8 39 39 H 1.48489 * 110.00330 * 180.02562 * 11 9 8 40 40 H 1.48506 * 109.99461 * 301.31889 * 11 9 8 41 41 H 1.07998 * 120.01346 * 180.29981 * 12 8 5 42 42 H 0.97000 * 120.00239 * 0.02562 * 16 14 13 43 43 H 1.09002 * 109.47153 * 59.99757 * 19 17 16 44 44 H 1.09001 * 109.46832 * 299.99948 * 19 17 16 45 45 H 1.08992 * 109.47399 * 59.99823 * 20 19 17 46 46 H 1.09004 * 109.46724 * 180.02562 * 20 19 17 47 47 H 1.07994 * 126.34270 * 180.02562 * 26 25 24 48 48 H 0.96995 * 126.98245 * 0.02967 * 27 23 21 49 49 H 1.09002 * 109.47153 * 60.00231 * 28 21 20 50 50 H 1.09001 * 109.47289 * 180.02562 * 28 21 20 51 51 H 1.09000 * 109.47486 * 59.99569 * 29 17 16 52 52 H 1.09002 * 109.46716 * 299.99651 * 29 17 16 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 2.0449 1.2087 0.0000 4 6 1.2935 2.3710 0.0005 5 6 1.9253 3.6061 0.0011 6 8 1.1851 4.7437 0.0011 7 6 -0.2360 4.5931 0.0011 8 6 3.3145 3.6835 0.0005 9 6 3.9915 5.0298 0.0005 10 8 3.8934 5.6122 -1.3007 11 14 5.7865 4.8224 0.4544 12 6 4.0724 2.5351 0.0063 13 6 3.4461 1.2851 -0.0006 14 6 4.2539 0.0533 -0.0017 15 8 3.7065 -1.0328 -0.0026 16 7 5.5995 0.1298 -0.0017 17 6 6.4028 -1.0952 -0.0034 18 1 5.8980 -1.8600 -0.5937 19 6 7.7757 -0.8041 -0.6127 20 6 8.6144 -2.0837 -0.6150 21 6 8.7892 -2.5816 0.8211 22 1 9.2941 -1.8171 1.4118 23 6 9.6158 -3.8416 0.8190 24 7 10.9057 -3.9207 1.0018 25 7 11.2776 -5.1500 0.9360 26 6 10.2417 -5.9109 0.7089 27 7 9.1569 -5.1027 0.6327 28 6 7.4163 -2.8727 1.4305 29 6 6.5774 -1.5925 1.4330 30 1 -0.3634 -1.0277 -0.0005 31 1 -0.3633 0.5138 0.8899 32 1 -0.3633 0.5138 -0.8900 33 1 0.2149 2.3165 0.0005 34 1 -0.5430 4.0439 -0.8889 35 1 -0.5431 4.0438 0.8910 36 1 -0.7056 5.5768 0.0015 37 1 3.5058 5.6808 0.7275 38 1 4.3055 5.0857 -1.9993 39 1 6.4652 6.1431 0.4586 40 1 5.9020 4.1883 1.7923 41 1 5.1505 2.5994 0.0108 42 1 6.0360 0.9960 -0.0006 43 1 8.2805 -0.0394 -0.0224 44 1 7.6512 -0.4498 -1.6360 45 1 8.1095 -2.8481 -1.2056 46 1 9.5926 -1.8761 -1.0488 47 1 10.2477 -6.9858 0.6048 48 1 8.2386 -5.3721 0.4750 49 1 6.9114 -3.6371 0.8399 50 1 7.5407 -3.2270 2.4538 51 1 5.5994 -1.8000 1.8671 52 1 7.0822 -0.8278 2.0233 There are 72 doubly filled levels RHF calculation, no. of doubly occupied orbitals= 72 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). 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_22_16624780_12297780.mol2 52 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED SCF FIELD WAS ACHIEVED Wall clock time and date at job start Sun Mar 7 2021 05:32:34 Heat of formation + Delta-G solvation = -34.911017 kcal Electronic energy + Delta-G solvation = -36807.321030 eV Core-core repulsion = 31968.681348 eV Total energy + Delta-G solvation = -4838.639681 eV No. of doubly occupied orbitals = 72 and no. of open levels = 1 Molecular weight (most abundant/longest-lived isotopes) = 389.183 amu Computer time = 1.50 seconds Orbital eigenvalues (eV) -44.08166 -42.11083 -40.87272 -40.06825 -39.12773 -38.43762 -36.97041 -35.63150 -34.52498 -32.71793 -32.24037 -32.00118 -31.52121 -29.51126 -29.11942 -28.20021 -26.15470 -25.19803 -24.34636 -23.96737 -23.35812 -22.68762 -22.05231 -21.43097 -20.98561 -20.05595 -19.33187 -18.79886 -18.25627 -17.96605 -17.27626 -17.17463 -16.80741 -16.68068 -16.58332 -16.35346 -16.31215 -16.10538 -15.82518 -15.71303 -15.66262 -15.39896 -15.19949 -15.01957 -14.58688 -14.28016 -14.18235 -13.98099 -13.84041 -13.55028 -13.39163 -13.30928 -12.79275 -12.77092 -12.67151 -12.60351 -12.43417 -12.36466 -12.28356 -12.24336 -11.99517 -11.78650 -11.76500 -11.67784 -11.52756 -11.25343 -10.71656 -10.42402 -10.14336 -10.05004 -9.94213 -9.17234 -5.16378 -0.24447 0.07883 0.85566 1.22431 1.55816 1.81003 1.82352 1.93427 1.96454 2.01510 2.08445 2.11525 2.66517 3.12526 3.38153 3.41869 3.45551 3.54335 3.59607 3.68719 3.75603 3.77635 3.84237 3.94935 4.00926 4.01959 4.03697 4.08703 4.09067 4.10543 4.19075 4.21740 4.25283 4.28043 4.38810 4.39877 4.46396 4.49120 4.53406 4.56024 4.68548 4.73870 4.85264 4.88171 4.91859 4.96100 4.97777 4.99531 5.13082 5.18066 5.22187 5.25837 5.50467 5.96686 6.07620 6.24647 6.53300 6.60756 7.33625 7.79888 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C 0.018 3.982 2 O -0.274 6.274 3 C 0.234 3.766 4 C -0.315 4.315 5 C 0.223 3.777 6 O -0.296 6.296 7 C 0.021 3.979 8 C -0.198 4.198 9 C -0.050 4.050 10 O -0.535 6.535 11 Si 0.672 3.328 12 C -0.004 4.004 13 C -0.210 4.210 14 C 0.568 3.432 15 O -0.518 6.518 16 N -0.730 5.730 17 C 0.146 3.854 18 H 0.091 0.909 19 C -0.127 4.127 20 C -0.106 4.106 21 C -0.004 4.004 22 H 0.110 0.890 23 C 0.187 3.813 24 N -0.291 5.291 25 N -0.296 5.296 26 C 0.153 3.847 27 N -0.581 5.581 28 C -0.114 4.114 29 C -0.128 4.128 30 H 0.107 0.893 31 H 0.057 0.943 32 H 0.058 0.942 33 H 0.145 0.855 34 H 0.060 0.940 35 H 0.058 0.942 36 H 0.107 0.893 37 H 0.114 0.886 38 H 0.376 0.624 39 H -0.250 1.250 40 H -0.251 1.251 41 H 0.140 0.860 42 H 0.397 0.603 43 H 0.076 0.924 44 H 0.079 0.921 45 H 0.067 0.933 46 H 0.080 0.920 47 H 0.222 0.778 48 H 0.429 0.571 49 H 0.064 0.936 50 H 0.073 0.927 51 H 0.075 0.925 52 H 0.071 0.929 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -5.332 0.091 -2.165 5.755 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 -0.077 4.077 2 O -0.184 6.184 3 C 0.185 3.815 4 C -0.334 4.334 5 C 0.175 3.825 6 O -0.207 6.207 7 C -0.073 4.073 8 C -0.200 4.200 9 C -0.161 4.161 10 O -0.340 6.340 11 Si 0.573 3.427 12 C -0.022 4.022 13 C -0.214 4.214 14 C 0.356 3.644 15 O -0.394 6.394 16 N -0.382 5.382 17 C 0.042 3.958 18 H 0.109 0.891 19 C -0.165 4.165 20 C -0.145 4.145 21 C -0.025 4.025 22 H 0.128 0.872 23 C -0.082 4.082 24 N -0.132 5.132 25 N -0.136 5.136 26 C -0.136 4.136 27 N -0.194 5.194 28 C -0.153 4.153 29 C -0.167 4.167 30 H 0.125 0.875 31 H 0.076 0.924 32 H 0.076 0.924 33 H 0.162 0.838 34 H 0.079 0.921 35 H 0.077 0.923 36 H 0.125 0.875 37 H 0.132 0.868 38 H 0.222 0.778 39 H -0.174 1.174 40 H -0.176 1.176 41 H 0.157 0.843 42 H 0.232 0.768 43 H 0.095 0.905 44 H 0.097 0.903 45 H 0.085 0.915 46 H 0.099 0.901 47 H 0.238 0.762 48 H 0.269 0.731 49 H 0.083 0.917 50 H 0.092 0.908 51 H 0.094 0.906 52 H 0.090 0.910 Dipole moment (debyes) X Y Z Total from point charges -3.670 0.405 -0.972 3.818 hybrid contribution -2.840 -0.211 -0.053 2.848 sum -6.509 0.194 -1.025 6.592 Atomic orbital electron populations 1.23239 0.78230 1.04837 1.01352 1.86394 1.21166 1.25042 1.85802 1.18716 0.90648 0.84382 0.87797 1.21311 1.01152 0.91530 1.19420 1.18727 0.90468 0.84700 0.88622 1.86165 1.19475 1.28509 1.86538 1.23218 0.77807 1.04683 1.01630 1.19458 0.90850 0.96436 1.13211 1.24830 1.09723 0.92225 0.89272 1.86556 1.82072 1.49300 1.16068 0.95459 0.77173 0.84729 0.85308 1.20689 0.98468 0.89997 0.93068 1.19042 0.90640 0.93599 1.18124 1.17779 0.81758 0.88534 0.76333 1.90844 1.71386 1.28654 1.48525 1.45939 1.05881 1.09567 1.76848 1.20996 0.91015 0.87198 0.96587 0.89098 1.21826 0.94186 0.98250 1.02236 1.21526 1.01110 0.97245 0.94650 1.19798 0.93592 0.90327 0.98754 0.87168 1.24882 0.92928 0.87305 1.03114 1.74306 1.08079 1.12235 1.18585 1.74305 1.24947 0.96915 1.17384 1.26576 0.82668 1.00121 1.04234 1.44137 1.12420 1.07520 1.55299 1.21609 0.93686 0.98488 1.01541 1.21921 1.00802 0.96963 0.97026 0.87476 0.92427 0.92363 0.83794 0.92144 0.92308 0.87482 0.86839 0.77766 1.17446 1.17588 0.84318 0.76801 0.90487 0.90252 0.91471 0.90148 0.76157 0.73123 0.91693 0.90830 0.90613 0.91007 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 -0.03 9.81 101.05 0.99 0.96 16 2 O -0.27 -0.73 8.56 -40.61 -0.35 -1.08 16 3 C 0.23 0.43 6.70 -38.74 -0.26 0.17 16 4 C -0.31 -0.10 8.01 -39.34 -0.31 -0.41 16 5 C 0.22 0.20 6.67 -39.06 -0.26 -0.06 16 6 O -0.30 -0.31 9.80 -18.86 -0.18 -0.49 16 7 C 0.02 -0.05 9.80 101.05 0.99 0.94 16 8 C -0.20 0.01 5.27 -104.53 -0.55 -0.54 16 9 C -0.05 0.01 2.37 36.00 0.09 0.10 16 10 O -0.54 -0.13 12.88 -35.23 -0.45 -0.59 16 11 Si 0.67 -1.36 29.90 -169.99 -5.08 -6.44 16 12 C 0.00 0.00 8.14 -39.23 -0.32 -0.31 16 13 C -0.21 -0.23 5.89 -104.84 -0.62 -0.85 16 14 C 0.57 1.05 7.72 -12.58 -0.10 0.96 16 15 O -0.52 -2.86 14.81 -16.66 -0.25 -3.10 16 16 N -0.73 1.21 5.03 -54.92 -0.28 0.94 16 17 C 0.15 -0.31 2.45 -67.93 -0.17 -0.47 16 18 H 0.09 -0.03 7.58 -51.93 -0.39 -0.43 16 19 C -0.13 0.50 5.39 -26.73 -0.14 0.35 16 20 C -0.11 0.31 5.19 -26.73 -0.14 0.17 16 21 C 0.00 0.01 2.66 -91.78 -0.24 -0.24 16 22 H 0.11 -0.20 8.14 -51.93 -0.42 -0.62 16 23 C 0.19 0.13 6.99 -154.99 -1.08 -0.95 16 24 N -0.29 -1.39 12.21 32.79 0.40 -0.99 16 25 N -0.30 -1.40 12.21 29.69 0.36 -1.04 16 26 C 0.15 0.00 13.19 -89.94 -1.19 -1.18 16 27 N -0.58 0.92 5.96 -11.37 -0.07 0.85 16 28 C -0.11 0.31 4.97 -26.70 -0.13 0.18 16 29 C -0.13 0.25 5.50 -26.70 -0.15 0.11 16 30 H 0.11 -0.27 8.14 -51.93 -0.42 -0.69 16 31 H 0.06 -0.15 7.66 -51.93 -0.40 -0.55 16 32 H 0.06 -0.16 7.66 -51.93 -0.40 -0.56 16 33 H 0.14 -0.26 4.50 -52.49 -0.24 -0.50 16 34 H 0.06 -0.20 7.65 -51.93 -0.40 -0.60 16 35 H 0.06 -0.20 7.65 -51.93 -0.40 -0.60 16 36 H 0.11 -0.39 8.14 -51.93 -0.42 -0.81 16 37 H 0.11 0.11 7.82 -51.92 -0.41 -0.30 16 38 H 0.38 -1.47 8.70 45.56 0.40 -1.07 16 39 H -0.25 -0.37 7.11 56.52 0.40 0.04 16 40 H -0.25 -0.01 7.11 56.52 0.40 0.40 16 41 H 0.14 -0.62 3.42 -52.49 -0.18 -0.80 16 42 H 0.40 -1.76 6.62 -40.82 -0.27 -2.03 16 43 H 0.08 -0.37 8.14 -51.93 -0.42 -0.80 16 44 H 0.08 -0.34 8.14 -51.93 -0.42 -0.76 16 45 H 0.07 -0.20 8.14 -51.93 -0.42 -0.62 16 46 H 0.08 -0.16 8.14 -51.93 -0.42 -0.59 16 47 H 0.22 -0.95 8.06 -52.49 -0.42 -1.37 16 48 H 0.43 -2.08 8.28 -40.82 -0.34 -2.42 16 49 H 0.06 -0.22 7.52 -51.93 -0.39 -0.61 16 50 H 0.07 -0.16 8.14 -51.93 -0.42 -0.59 16 51 H 0.08 0.01 8.14 -51.93 -0.42 -0.41 16 52 H 0.07 -0.18 8.14 -51.93 -0.42 -0.60 16 LS Contribution 416.80 15.07 6.28 6.28 Total: 0.00 -14.17 416.80 -10.46 -24.63 By element: Atomic # 1 Polarization: -10.63 SS G_CDS: -7.26 Total: -17.88 kcal Atomic # 6 Polarization: 2.51 SS G_CDS: -3.59 Total: -1.08 kcal Atomic # 7 Polarization: -0.66 SS G_CDS: 0.42 Total: -0.24 kcal Atomic # 8 Polarization: -4.03 SS G_CDS: -1.23 Total: -5.26 kcal Atomic # 14 Polarization: -1.36 SS G_CDS: -5.08 Total: -6.44 kcal Total LS contribution 6.28 Total: 6.28 kcal Total: -14.17 -10.46 -24.63 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_22_16624780_12297780.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 -10.279 kcal (2) G-P(sol) polarization free energy of solvation -14.168 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -24.446 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -10.465 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -24.632 kcal (6) G-S(sol) free energy of system = (1) + (5) -34.911 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.50 seconds