Wall clock time and date at job start Sat Apr 11 2020 06:12:28 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 1.52997 * 1 3 3 O 1.42891 * 109.47299 * 2 1 4 4 C 1.42895 * 114.00557 * 177.87682 * 3 2 1 5 5 H 1.09003 * 109.46744 * 17.09323 * 4 3 2 6 6 C 1.50696 * 109.47860 * 137.09736 * 4 3 2 7 7 O 1.21283 * 119.99906 * 12.17757 * 6 4 3 8 8 N 1.34779 * 120.00110 * 192.18264 * 6 4 3 9 9 C 1.48206 * 119.97449 * 5.36204 * 8 6 4 10 10 C 1.47134 * 110.34596 * 102.46329 * 9 8 6 11 11 C 1.53803 * 111.83944 * 58.29956 * 10 9 8 12 12 N 1.43464 * 107.96014 * 281.67348 * 11 10 9 13 13 C 1.36944 * 118.93655 * 273.62489 * 12 11 10 14 14 H 1.08006 * 119.99839 * 142.14284 * 13 12 11 15 15 C 1.38804 * 120.00140 * 322.14263 * 13 12 11 16 16 N 1.31620 * 119.99932 * 160.43674 * 15 13 12 17 17 Si 1.86801 * 120.00327 * 340.43557 * 15 13 12 18 18 H 1.48493 * 109.47122 * 93.00870 * 17 15 13 19 19 H 1.48503 * 109.47239 * 213.01130 * 17 15 13 20 20 H 1.48504 * 109.46825 * 333.00863 * 17 15 13 21 21 C 1.48853 * 122.12234 * 93.65187 * 12 11 10 22 22 C 1.43619 * 119.96864 * 185.08665 * 8 6 4 23 23 C 1.53005 * 109.46935 * 257.09939 * 4 3 2 24 24 C 1.53172 * 109.54587 * 63.57303 * 23 4 3 25 25 C 1.53093 * 109.21815 * 183.18372 * 24 23 4 26 26 O 1.42900 * 109.41024 * 57.57584 * 25 24 23 27 27 C 1.42901 * 114.10049 * 298.84061 * 26 25 24 28 28 C 1.53091 * 109.41118 * 61.16440 * 27 26 25 29 29 H 1.09002 * 109.47717 * 59.99904 * 1 2 3 30 30 H 1.09007 * 109.47166 * 179.97438 * 1 2 3 31 31 H 1.08994 * 109.47212 * 299.99483 * 1 2 3 32 32 H 1.09008 * 109.46776 * 240.00363 * 2 1 3 33 33 H 1.09001 * 109.47282 * 120.00402 * 2 1 3 34 34 H 1.08996 * 109.32659 * 222.73463 * 9 8 6 35 35 H 1.09011 * 109.32109 * 342.37411 * 9 8 6 36 36 H 1.09008 * 109.00877 * 178.90480 * 10 9 8 37 37 H 1.08999 * 109.01168 * 297.76847 * 10 9 8 38 38 H 1.08997 * 109.76058 * 41.28489 * 11 10 9 39 39 H 1.08996 * 109.76325 * 162.00539 * 11 10 9 40 40 H 0.97002 * 120.00160 * 185.01407 * 16 15 13 41 41 H 1.08994 * 109.48101 * 80.57854 * 21 12 11 42 42 H 1.09001 * 109.48396 * 200.61566 * 21 12 11 43 43 H 1.09004 * 108.87725 * 31.46650 * 22 8 6 44 44 H 1.09004 * 108.87454 * 149.90734 * 22 8 6 45 45 H 1.09001 * 109.61560 * 183.79509 * 23 4 3 46 46 H 1.09004 * 109.52355 * 63.24619 * 24 23 4 47 47 H 1.08997 * 109.52565 * 303.12637 * 24 23 4 48 48 H 1.08999 * 109.48417 * 177.56041 * 25 24 23 49 49 H 1.09003 * 109.47940 * 297.59766 * 25 24 23 50 50 H 1.09000 * 109.48088 * 181.13815 * 27 26 25 51 51 H 1.08997 * 109.48353 * 301.17927 * 27 26 25 52 52 H 1.08992 * 109.52808 * 62.29595 * 28 27 26 53 53 H 1.08999 * 109.52114 * 182.42512 * 28 27 26 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 8 2.0063 1.3472 0.0000 4 6 3.4300 1.4604 0.0484 5 1 3.8798 0.5063 -0.2264 6 6 3.8824 2.5256 -0.9168 7 8 3.0710 3.2770 -1.4147 8 7 5.1888 2.6432 -1.2268 9 6 6.1639 1.6526 -0.7128 10 6 6.5286 0.6973 -1.7708 11 6 7.1274 1.4044 -2.9985 12 7 6.0468 1.9699 -3.7540 13 6 5.4070 1.1905 -4.6805 14 1 4.3384 1.2753 -4.8121 15 6 6.1319 0.2916 -5.4507 16 7 5.5184 -0.7088 -6.0465 17 14 7.9783 0.5016 -5.6415 18 1 8.6774 -0.3017 -4.6066 19 1 8.3923 0.0390 -6.9905 20 1 8.3328 1.9345 -5.4791 21 6 5.5991 3.3767 -3.5636 22 6 5.6338 3.7252 -2.0598 23 6 3.8635 1.8392 1.4660 24 6 3.4834 0.7159 2.4355 25 6 3.8484 1.1362 3.8616 26 8 3.1791 2.3573 4.1828 27 6 3.5326 3.4557 3.3398 28 6 3.1549 3.1285 1.8927 29 1 -0.3634 0.5138 -0.8900 30 1 -0.3634 -1.0277 -0.0005 31 1 -0.3633 0.5137 0.8900 32 1 1.8933 -0.5138 -0.8901 33 1 1.8933 -0.5139 0.8899 34 1 7.0593 2.1716 -0.3711 35 1 5.7206 1.1100 0.1223 36 1 7.2598 -0.0080 -1.3757 37 1 5.6374 0.1498 -2.0775 38 1 7.8041 2.1951 -2.6747 39 1 7.6689 0.6837 -3.6111 40 1 6.0330 -1.3781 -6.5243 41 1 6.2636 4.0466 -4.1090 42 1 4.5819 3.4885 -3.9389 43 1 4.9922 4.5895 -1.8880 44 1 6.6553 3.9862 -1.7830 45 1 4.9425 1.9921 1.4900 46 1 4.0272 -0.1915 2.1728 47 1 2.4114 0.5288 2.3739 48 1 3.5402 0.3582 4.5600 49 1 4.9261 1.2828 3.9328 50 1 2.9968 4.3485 3.6622 51 1 4.6061 3.6326 3.4042 52 1 2.0761 2.9913 1.8199 53 1 3.4627 3.9469 1.2420 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 ZINC001196655133.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 06:12:28 Heat of formation + Delta-G solvation = -91.006922 kcal Electronic energy + Delta-G solvation = -33274.432640 eV Core-core repulsion = 29147.524026 eV Total energy + Delta-G solvation = -4126.908615 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.220 amu Computer time = 1.30 seconds Orbital eigenvalues (eV) -40.69069 -39.20290 -37.91101 -36.90067 -34.72381 -34.03884 -32.34285 -31.60418 -31.40054 -31.06413 -28.79996 -27.16279 -25.79626 -24.27858 -23.86724 -23.25771 -22.64186 -21.91576 -20.32097 -20.12641 -18.74302 -17.16371 -16.81226 -16.64065 -16.50031 -16.13548 -15.83101 -15.61882 -15.29050 -14.98211 -14.83320 -14.33341 -14.11017 -13.93781 -13.86475 -13.38889 -13.26174 -13.12746 -12.76900 -12.48327 -12.44702 -12.37799 -12.30082 -11.96449 -11.87263 -11.76287 -11.51218 -11.31430 -11.15562 -11.04722 -11.00274 -10.81897 -10.62170 -10.49950 -10.39689 -10.24362 -9.95417 -9.79175 -9.67562 -9.53117 -8.99805 -8.56011 -8.24637 -6.81326 -5.95325 -3.41664 2.89760 3.10063 3.23394 3.42263 3.46000 3.69587 3.86956 4.37938 4.46877 4.47712 4.62032 4.77839 4.85373 4.95848 5.00343 5.03464 5.07762 5.09408 5.20813 5.28166 5.30723 5.37052 5.39609 5.42441 5.45546 5.48618 5.51117 5.55077 5.67235 5.70248 5.74575 5.83961 5.86435 5.94744 5.99898 6.02810 6.05277 6.14496 6.20206 6.21480 6.28126 6.52318 6.59752 6.72364 6.85371 7.00279 7.04699 7.20453 7.71532 8.10321 8.38369 8.57526 9.03615 9.71411 10.08140 11.18345 Molecular weight = 340.22amu Principal moments of inertia in cm(-1) A = 0.014725 B = 0.003817 C = 0.003534 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1901.077138 B = 7333.988866 C = 7921.762803 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.148 4.148 2 C 0.049 3.951 3 O -0.350 6.350 4 C 0.083 3.917 5 H 0.086 0.914 6 C 0.518 3.482 7 O -0.522 6.522 8 N -0.586 5.586 9 C 0.118 3.882 10 C -0.172 4.172 11 C 0.152 3.848 12 N -0.603 5.603 13 C -0.265 4.265 14 H 0.076 0.924 15 C 0.032 3.968 16 N -0.907 5.907 17 Si 0.890 3.110 18 H -0.286 1.286 19 H -0.304 1.304 20 H -0.272 1.272 21 C 0.128 3.872 22 C 0.105 3.895 23 C -0.101 4.101 24 C -0.155 4.155 25 C 0.064 3.936 26 O -0.384 6.384 27 C 0.063 3.937 28 C -0.144 4.144 29 H 0.065 0.935 30 H 0.069 0.931 31 H 0.061 0.939 32 H 0.053 0.947 33 H 0.050 0.950 34 H 0.068 0.932 35 H 0.073 0.927 36 H 0.060 0.940 37 H 0.077 0.923 38 H 0.037 0.963 39 H 0.050 0.950 40 H 0.263 0.737 41 H 0.032 0.968 42 H 0.063 0.937 43 H 0.074 0.926 44 H 0.063 0.937 45 H 0.085 0.915 46 H 0.073 0.927 47 H 0.081 0.919 48 H 0.093 0.907 49 H 0.049 0.951 50 H 0.093 0.907 51 H 0.048 0.952 52 H 0.084 0.916 53 H 0.073 0.927 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -0.589 2.932 20.361 20.579 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 -0.206 4.206 2 C -0.027 4.027 3 O -0.268 6.268 4 C 0.021 3.979 5 H 0.104 0.896 6 C 0.305 3.695 7 O -0.397 6.397 8 N -0.320 5.320 9 C -0.004 4.004 10 C -0.213 4.213 11 C 0.025 3.975 12 N -0.326 5.326 13 C -0.394 4.394 14 H 0.093 0.907 15 C -0.168 4.168 16 N -0.549 5.549 17 Si 0.722 3.278 18 H -0.215 1.215 19 H -0.232 1.232 20 H -0.198 1.198 21 C 0.002 3.998 22 C -0.020 4.020 23 C -0.120 4.120 24 C -0.193 4.193 25 C -0.013 4.013 26 O -0.302 6.302 27 C -0.014 4.014 28 C -0.182 4.182 29 H 0.084 0.916 30 H 0.088 0.912 31 H 0.080 0.920 32 H 0.071 0.929 33 H 0.068 0.932 34 H 0.086 0.914 35 H 0.091 0.909 36 H 0.078 0.922 37 H 0.096 0.904 38 H 0.056 0.944 39 H 0.068 0.932 40 H 0.073 0.927 41 H 0.050 0.950 42 H 0.082 0.918 43 H 0.093 0.907 44 H 0.082 0.918 45 H 0.103 0.897 46 H 0.092 0.908 47 H 0.100 0.900 48 H 0.111 0.889 49 H 0.068 0.932 50 H 0.111 0.889 51 H 0.066 0.934 52 H 0.103 0.897 53 H 0.092 0.908 Dipole moment (debyes) X Y Z Total from point charges -1.297 3.452 20.064 20.400 hybrid contribution 1.604 -0.534 -0.647 1.810 sum 0.307 2.918 19.416 19.637 Atomic orbital electron populations 1.21703 0.93567 1.02079 1.03210 1.22719 0.95905 0.83835 1.00265 1.88007 1.18164 1.26071 1.94574 1.21879 0.83874 0.98520 0.93651 0.89650 1.20269 0.82103 0.85239 0.81935 1.90678 1.51940 1.44062 1.53008 1.47317 1.06654 1.28354 1.49634 1.20909 0.92174 0.90858 0.96506 1.21805 1.02771 0.98779 0.97900 1.20644 0.90309 0.95401 0.91184 1.43910 1.38414 1.07643 1.42635 1.18834 0.92234 1.16500 1.11877 0.90676 1.25480 0.97604 0.97542 0.96198 1.69777 1.35446 1.12040 1.37602 0.86778 0.87015 0.78419 0.75576 1.21499 1.23187 1.19751 1.22056 0.99337 0.86106 0.92303 1.21483 0.98972 0.89170 0.92389 1.21668 1.00515 0.96489 0.93319 1.22352 1.03415 0.98111 0.95394 1.22533 0.96287 0.86934 0.95548 1.87922 1.67793 1.18609 1.55923 1.22600 0.99422 0.89450 0.89938 1.22114 1.02773 0.96977 0.96304 0.91570 0.91170 0.92033 0.92908 0.93211 0.91407 0.90897 0.92185 0.90424 0.94445 0.93194 0.92744 0.95015 0.91828 0.90725 0.91834 0.89663 0.90789 0.90026 0.88892 0.93247 0.88883 0.93417 0.89700 0.90843 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 17. 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 -1.65 10.28 37.16 0.38 -1.27 16 2 C 0.05 0.62 5.96 37.16 0.22 0.85 16 3 O -0.35 -5.46 8.34 -54.84 -0.46 -5.91 16 4 C 0.08 1.18 1.52 -27.88 -0.04 1.14 16 5 H 0.09 1.18 6.75 -51.93 -0.35 0.83 16 6 C 0.52 9.15 5.97 -10.99 -0.07 9.09 16 7 O -0.52 -11.26 16.14 -14.05 -0.23 -11.49 16 8 N -0.59 -9.48 2.47 -176.97 -0.44 -9.92 16 9 C 0.12 1.59 4.96 -5.92 -0.03 1.56 16 10 C -0.17 -2.91 5.64 -29.13 -0.16 -3.07 16 11 C 0.15 3.08 4.53 -5.23 -0.02 3.06 16 12 N -0.60 -13.99 2.14 -172.29 -0.37 -14.35 16 13 C -0.27 -7.42 9.59 -15.06 -0.14 -7.56 16 14 H 0.08 2.37 8.06 -52.48 -0.42 1.94 16 15 C 0.03 0.91 5.34 -17.43 -0.09 0.81 16 16 N -0.91 -27.61 13.96 55.49 0.77 -26.84 16 17 Si 0.89 22.09 24.95 -169.99 -4.24 17.85 16 18 H -0.29 -6.76 6.64 56.52 0.38 -6.39 16 19 H -0.30 -7.73 7.11 56.52 0.40 -7.33 16 20 H -0.27 -6.65 7.11 56.52 0.40 -6.25 16 21 C 0.13 2.59 6.84 -2.01 -0.01 2.57 16 22 C 0.10 1.72 5.17 -4.84 -0.03 1.70 16 23 C -0.10 -1.12 1.71 -90.43 -0.15 -1.28 16 24 C -0.16 -1.44 4.62 -26.59 -0.12 -1.56 16 25 C 0.06 0.55 6.84 37.21 0.25 0.81 16 26 O -0.38 -4.23 10.76 -35.23 -0.38 -4.61 16 27 C 0.06 0.62 6.84 37.20 0.25 0.88 16 28 C -0.14 -1.70 5.03 -26.59 -0.13 -1.83 16 29 H 0.07 0.82 8.14 -51.93 -0.42 0.40 16 30 H 0.07 0.63 8.14 -51.93 -0.42 0.21 16 31 H 0.06 0.65 8.14 -51.93 -0.42 0.22 16 32 H 0.05 0.72 8.14 -51.92 -0.42 0.30 16 33 H 0.05 0.52 6.08 -51.93 -0.32 0.20 16 34 H 0.07 0.77 8.06 -51.93 -0.42 0.35 16 35 H 0.07 0.81 4.48 -51.92 -0.23 0.58 16 36 H 0.06 0.87 8.14 -51.92 -0.42 0.45 16 37 H 0.08 1.57 7.91 -51.93 -0.41 1.16 16 38 H 0.04 0.67 7.58 -51.93 -0.39 0.28 16 39 H 0.05 1.14 2.73 -51.93 -0.14 1.00 16 40 H 0.26 7.57 8.32 -40.82 -0.34 7.23 16 41 H 0.03 0.61 8.14 -51.93 -0.42 0.19 16 42 H 0.06 1.43 7.97 -51.93 -0.41 1.01 16 43 H 0.07 1.21 7.45 -51.93 -0.39 0.82 16 44 H 0.06 0.89 7.73 -51.93 -0.40 0.49 16 45 H 0.09 0.86 6.24 -51.93 -0.32 0.53 16 46 H 0.07 0.58 8.14 -51.93 -0.42 0.16 16 47 H 0.08 0.84 6.15 -51.93 -0.32 0.52 16 48 H 0.09 0.67 8.14 -51.93 -0.42 0.24 16 49 H 0.05 0.38 8.14 -51.93 -0.42 -0.05 16 50 H 0.09 0.83 8.14 -51.93 -0.42 0.41 16 51 H 0.05 0.42 8.14 -51.93 -0.42 0.00 16 52 H 0.08 1.15 7.49 -51.93 -0.39 0.77 16 53 H 0.07 0.96 7.47 -51.93 -0.39 0.57 16 LS Contribution 390.49 15.07 5.88 5.88 Total: -1.00 -34.18 390.49 -8.47 -42.66 By element: Atomic # 1 Polarization: 9.97 SS G_CDS: -9.12 Total: 0.85 kcal Atomic # 6 Polarization: 5.78 SS G_CDS: 0.10 Total: 5.88 kcal Atomic # 7 Polarization: -51.08 SS G_CDS: -0.03 Total: -51.11 kcal Atomic # 8 Polarization: -20.95 SS G_CDS: -1.06 Total: -22.01 kcal Atomic # 14 Polarization: 22.09 SS G_CDS: -4.24 Total: 17.85 kcal Total LS contribution 5.88 Total: 5.88 kcal Total: -34.18 -8.47 -42.66 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. ZINC001196655133.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 -48.352 kcal (2) G-P(sol) polarization free energy of solvation -34.184 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -82.536 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -8.471 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -42.655 kcal (6) G-S(sol) free energy of system = (1) + (5) -91.007 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.30 seconds