Wall clock time and date at job start Tue Mar 9 2021 17:48:24 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 1.52998 * 1 3 3 C 1.52996 * 109.47251 * 2 1 4 4 N 1.46504 * 109.47242 * 120.00314 * 2 1 3 5 5 C 1.46496 * 119.99863 * 304.66453 * 4 2 1 6 6 C 1.39669 * 119.99767 * 124.66499 * 4 2 1 7 7 C 1.38797 * 120.03965 * 174.46709 * 6 4 2 8 8 C 1.38614 * 119.86375 * 180.23138 * 7 6 4 9 9 O 1.35903 * 120.01580 * 179.74997 * 8 7 6 10 10 C 1.42901 * 116.99617 * 359.72488 * 9 8 7 11 11 C 1.53004 * 109.46701 * 180.02562 * 10 9 8 12 12 H 1.09000 * 109.47039 * 55.00552 * 11 10 9 13 13 C 1.53009 * 109.46879 * 174.99869 * 11 10 9 14 14 C 1.53004 * 109.46879 * 180.02562 * 13 11 10 15 15 C 1.53000 * 109.46848 * 300.00234 * 14 13 11 16 16 H 1.09000 * 109.47142 * 299.99507 * 15 14 13 17 17 O 1.42904 * 109.46587 * 180.02562 * 15 14 13 18 18 C 1.52996 * 109.47374 * 60.00262 * 15 14 13 19 19 C 1.52999 * 109.47172 * 299.99472 * 18 15 14 20 20 C 1.38773 * 119.96785 * 359.47667 * 8 7 6 21 21 C 1.50703 * 119.95380 * 180.27591 * 20 8 7 22 22 O 1.42901 * 109.47151 * 74.99956 * 21 20 8 23 23 Si 1.86299 * 109.47095 * 194.99838 * 21 20 8 24 24 C 1.38215 * 120.09228 * 0.29675 * 20 8 7 25 25 C 1.38114 * 120.12790 * 359.95253 * 24 20 8 26 26 H 1.09005 * 109.46928 * 299.99584 * 1 2 3 27 27 H 1.08995 * 109.47288 * 60.00213 * 1 2 3 28 28 H 1.09003 * 109.47071 * 180.02562 * 1 2 3 29 29 H 1.09005 * 109.46928 * 240.00416 * 2 1 3 30 30 H 1.08998 * 109.46945 * 59.99998 * 3 2 1 31 31 H 1.09001 * 109.47359 * 180.02562 * 3 2 1 32 32 H 1.09000 * 109.47239 * 300.00267 * 3 2 1 33 33 H 1.09008 * 109.46989 * 269.99827 * 5 4 2 34 34 H 1.08997 * 109.47012 * 29.99831 * 5 4 2 35 35 H 1.08994 * 109.47195 * 150.00411 * 5 4 2 36 36 H 1.07994 * 120.06841 * 0.02562 * 7 6 4 37 37 H 1.08993 * 109.47259 * 60.00359 * 10 9 8 38 38 H 1.08998 * 109.47370 * 299.99993 * 10 9 8 39 39 H 1.09000 * 109.46728 * 60.00492 * 13 11 10 40 40 H 1.08994 * 109.47081 * 299.99903 * 13 11 10 41 41 H 1.09000 * 109.46847 * 59.99921 * 14 13 11 42 42 H 1.08992 * 109.46736 * 180.02562 * 14 13 11 43 43 H 0.96700 * 114.00110 * 179.97438 * 17 15 14 44 44 H 1.09000 * 109.47148 * 59.99806 * 18 15 14 45 45 H 1.09003 * 109.46977 * 179.97438 * 18 15 14 46 46 H 1.09000 * 109.47288 * 179.97438 * 19 18 15 47 47 H 1.09000 * 109.47357 * 300.00206 * 19 18 15 48 48 H 1.09000 * 109.46907 * 315.00078 * 21 20 8 49 49 H 0.96692 * 114.00282 * 59.99978 * 22 21 20 50 50 H 1.48497 * 110.00017 * 58.67914 * 23 21 20 51 51 H 1.48497 * 110.00179 * 179.97438 * 23 21 20 52 52 H 1.08000 * 119.93132 * 179.97438 * 24 20 8 53 53 H 1.07997 * 119.98148 * 179.97438 * 25 24 20 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 2.0400 1.4425 0.0000 4 7 2.0184 -0.6907 1.1962 5 6 1.5822 -0.2526 2.5243 6 6 2.8998 -1.7668 1.0702 7 6 3.4527 -2.3483 2.2027 8 6 4.3308 -3.4130 2.0732 9 8 4.8780 -3.9814 3.1798 10 6 4.5085 -3.4269 4.4440 11 6 5.2190 -4.1909 5.5631 12 1 6.2939 -4.1832 5.3827 13 6 4.9226 -3.5205 6.9062 14 6 5.6336 -4.2841 8.0253 15 6 5.1322 -5.7293 8.0549 16 1 4.0573 -5.7373 8.2356 17 8 5.7959 -6.4423 9.1005 18 6 5.4286 -6.3996 6.7119 19 6 4.7176 -5.6361 5.5928 20 6 4.6465 -3.9019 0.8134 21 6 5.5964 -5.0634 0.6734 22 8 4.9299 -6.2714 1.0459 23 14 6.1669 -5.1893 -1.0957 24 6 4.0913 -3.3247 -0.3131 25 6 3.2199 -2.2603 -0.1888 26 1 -0.3633 0.5138 0.8901 27 1 -0.3633 0.5138 -0.8900 28 1 -0.3633 -1.0277 0.0005 29 1 1.8933 -0.5138 -0.8901 30 1 1.6767 1.9563 0.8900 31 1 3.1300 1.4425 -0.0005 32 1 1.6766 1.9563 -0.8899 33 1 2.2710 0.5032 2.9020 34 1 0.5801 0.1706 2.4563 35 1 1.5712 -1.1055 3.2028 36 1 3.2020 -1.9698 3.1826 37 1 3.4296 -3.5093 4.5755 38 1 4.7998 -2.3772 4.4794 39 1 3.8476 -3.5282 7.0866 40 1 5.2802 -2.4911 6.8852 41 1 6.7085 -4.2761 7.8445 42 1 5.4221 -3.8068 8.9820 43 1 5.5262 -7.3677 9.1782 44 1 6.5035 -6.3916 6.5312 45 1 5.0718 -7.4294 6.7332 46 1 4.9291 -6.1134 4.6360 47 1 3.6427 -5.6441 5.7735 48 1 6.4579 -4.9086 1.3229 49 1 4.1516 -6.4729 0.5088 50 1 6.8335 -3.9271 -1.5053 51 1 7.1047 -6.3306 -1.2469 52 1 4.3391 -3.7070 -1.2923 53 1 2.7878 -1.8109 -1.0707 There are 64 doubly filled levels RHF calculation, no. of doubly occupied orbitals= 64 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_34_15096556_16737256.mol2 53 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED SCF FIELD WAS ACHIEVED Wall clock time and date at job start Tue Mar 9 2021 17:48:24 Heat of formation + Delta-G solvation = -98.020973 kcal Electronic energy + Delta-G solvation = -30560.045602 eV Core-core repulsion = 26590.996136 eV Total energy + Delta-G solvation = -3969.049467 eV No. of doubly occupied orbitals = 64 and no. of open levels = 1 Molecular weight (most abundant/longest-lived isotopes) = 336.213 amu Computer time = 1.20 seconds Orbital eigenvalues (eV) -41.48955 -40.25981 -39.37761 -38.18185 -36.91721 -36.51946 -33.83944 -32.12295 -31.83003 -31.07742 -30.63360 -28.29959 -27.95349 -26.69848 -25.28451 -23.83036 -23.41612 -22.85329 -21.76253 -20.97513 -20.68652 -19.33618 -18.17850 -17.91155 -17.33478 -17.15367 -16.98222 -16.36694 -16.26958 -15.95287 -15.67450 -15.48632 -15.35547 -15.15897 -14.80321 -14.79232 -14.68145 -14.35408 -14.05971 -14.01527 -13.78344 -13.51191 -13.39622 -13.31311 -13.21269 -13.19018 -12.99882 -12.60936 -12.56825 -12.33827 -12.27179 -12.13767 -11.98468 -11.91728 -11.82672 -11.58271 -11.56234 -11.45268 -11.10816 -10.69259 -10.57366 -10.13784 -9.28651 -8.21880 -4.90724 0.50401 0.65920 1.49105 1.78241 2.01916 2.13033 2.26881 2.86069 3.17726 3.61848 3.63932 3.70551 3.74387 3.77838 3.85046 3.99650 4.02404 4.05322 4.09656 4.14445 4.15025 4.19807 4.31080 4.34040 4.37675 4.40948 4.44317 4.46997 4.49137 4.52498 4.53982 4.61865 4.63852 4.67657 4.71039 4.78203 4.78615 4.85576 4.93381 4.95273 5.03883 5.09465 5.10618 5.14705 5.17056 5.18194 5.21368 5.36005 5.40915 5.43742 5.55530 5.77291 6.25446 6.39105 6.63518 6.72555 6.84487 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.166 4.166 2 C 0.138 3.862 3 C -0.165 4.165 4 N -0.623 5.623 5 C 0.089 3.911 6 C 0.261 3.739 7 C -0.290 4.290 8 C 0.203 3.797 9 O -0.299 6.299 10 C 0.064 3.936 11 C -0.087 4.087 12 H 0.083 0.917 13 C -0.109 4.109 14 C -0.111 4.111 15 C 0.103 3.897 16 H 0.054 0.946 17 O -0.570 6.570 18 C -0.152 4.152 19 C -0.110 4.110 20 C -0.214 4.214 21 C -0.043 4.043 22 O -0.539 6.539 23 Si 0.675 3.325 24 C -0.028 4.028 25 C -0.232 4.232 26 H 0.059 0.941 27 H 0.069 0.931 28 H 0.061 0.939 29 H 0.095 0.905 30 H 0.057 0.943 31 H 0.059 0.941 32 H 0.067 0.933 33 H 0.048 0.952 34 H 0.071 0.929 35 H 0.066 0.934 36 H 0.128 0.872 37 H 0.062 0.938 38 H 0.061 0.939 39 H 0.068 0.932 40 H 0.072 0.928 41 H 0.072 0.928 42 H 0.072 0.928 43 H 0.379 0.621 44 H 0.071 0.929 45 H 0.066 0.934 46 H 0.079 0.921 47 H 0.062 0.938 48 H 0.107 0.893 49 H 0.373 0.627 50 H -0.259 1.259 51 H -0.257 1.257 52 H 0.132 0.868 53 H 0.128 0.872 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -5.247 2.409 -1.839 6.060 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 -0.224 4.224 2 C 0.035 3.965 3 C -0.223 4.223 4 N -0.333 5.333 5 C -0.054 4.054 6 C 0.158 3.842 7 C -0.313 4.313 8 C 0.156 3.844 9 O -0.211 6.211 10 C -0.011 4.011 11 C -0.105 4.105 12 H 0.102 0.898 13 C -0.147 4.147 14 C -0.148 4.148 15 C 0.044 3.956 16 H 0.072 0.928 17 O -0.376 6.376 18 C -0.189 4.189 19 C -0.148 4.148 20 C -0.216 4.216 21 C -0.154 4.154 22 O -0.344 6.344 23 Si 0.578 3.422 24 C -0.047 4.047 25 C -0.254 4.254 26 H 0.078 0.922 27 H 0.088 0.912 28 H 0.080 0.920 29 H 0.113 0.887 30 H 0.076 0.924 31 H 0.078 0.922 32 H 0.086 0.914 33 H 0.066 0.934 34 H 0.089 0.911 35 H 0.084 0.916 36 H 0.146 0.854 37 H 0.080 0.920 38 H 0.079 0.921 39 H 0.087 0.913 40 H 0.091 0.909 41 H 0.090 0.910 42 H 0.091 0.909 43 H 0.226 0.774 44 H 0.090 0.910 45 H 0.085 0.915 46 H 0.098 0.902 47 H 0.081 0.919 48 H 0.125 0.875 49 H 0.219 0.781 50 H -0.183 1.183 51 H -0.183 1.183 52 H 0.149 0.851 53 H 0.145 0.855 Dipole moment (debyes) X Y Z Total from point charges -3.783 2.998 -1.805 5.153 hybrid contribution -0.406 0.070 0.637 0.758 sum -4.189 3.068 -1.169 5.322 Atomic orbital electron populations 1.22198 0.94941 1.02635 1.02591 1.21122 0.94136 0.93031 0.88234 1.22201 1.01795 0.95860 1.02458 1.46630 1.48296 1.32471 1.05871 1.21628 0.99940 0.99953 0.83870 1.17544 0.87535 0.85921 0.93193 1.20682 1.08163 1.03978 0.98505 1.18417 0.89955 0.89714 0.86338 1.86142 1.65833 1.56325 1.12836 1.22867 0.99465 0.97289 0.81511 1.21215 1.01309 0.95433 0.92571 0.89842 1.21474 1.01106 0.99246 0.92874 1.21435 1.01156 0.93366 0.98888 1.21849 0.95393 0.92185 0.86156 0.92781 1.86513 1.68709 1.27644 1.54696 1.22271 1.01957 0.99526 0.95178 1.21501 0.99722 0.94233 0.99316 1.19360 1.07862 1.03782 0.90636 1.24697 0.96667 0.83377 1.10708 1.86516 1.46041 1.39694 1.62150 0.95242 0.86738 0.80813 0.79406 1.20490 0.93769 0.93930 0.96468 1.20543 1.06770 1.02363 0.95763 0.92202 0.91224 0.92028 0.88748 0.92371 0.92223 0.91374 0.93361 0.91062 0.91553 0.85401 0.91992 0.92076 0.91346 0.90910 0.90974 0.90899 0.77388 0.91017 0.91531 0.90214 0.91935 0.87539 0.78075 1.18346 1.18260 0.85097 0.85456 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 -0.17 0.34 9.08 37.16 0.34 0.68 16 2 C 0.14 -0.19 3.20 -67.93 -0.22 -0.40 16 3 C -0.16 0.26 9.26 37.16 0.34 0.61 16 4 N -0.62 0.08 2.90 -172.02 -0.50 -0.42 16 5 C 0.09 -0.13 9.30 59.84 0.56 0.43 16 6 C 0.26 0.35 6.53 -83.81 -0.55 -0.20 16 7 C -0.29 -0.51 8.15 -39.24 -0.32 -0.82 16 8 C 0.20 0.57 6.66 -39.24 -0.26 0.30 16 9 O -0.30 -0.87 9.00 -19.44 -0.17 -1.04 16 10 C 0.06 0.02 4.12 37.16 0.15 0.17 16 11 C -0.09 0.01 2.43 -90.61 -0.22 -0.21 16 12 H 0.08 0.08 8.14 -51.93 -0.42 -0.34 16 13 C -0.11 0.12 5.20 -26.72 -0.14 -0.02 16 14 C -0.11 -0.03 5.57 -26.73 -0.15 -0.18 16 15 C 0.10 0.05 3.47 -26.73 -0.09 -0.04 16 16 H 0.05 -0.01 8.14 -51.93 -0.42 -0.43 16 17 O -0.57 -0.98 13.32 -35.23 -0.47 -1.45 16 18 C -0.15 -0.04 5.55 -26.73 -0.15 -0.19 16 19 C -0.11 -0.04 5.10 -26.73 -0.14 -0.18 16 20 C -0.21 -0.44 5.28 -104.43 -0.55 -1.00 16 21 C -0.04 -0.09 2.37 36.01 0.09 0.00 16 22 O -0.54 -1.22 12.88 -35.23 -0.45 -1.67 16 23 Si 0.68 0.33 29.91 -169.99 -5.08 -4.75 16 24 C -0.03 -0.02 8.65 -39.64 -0.34 -0.36 16 25 C -0.23 -0.17 9.31 -39.36 -0.37 -0.54 16 26 H 0.06 -0.13 6.53 -51.93 -0.34 -0.46 16 27 H 0.07 -0.19 8.14 -51.93 -0.42 -0.62 16 28 H 0.06 -0.08 8.14 -51.93 -0.42 -0.50 16 29 H 0.09 -0.16 5.31 -51.93 -0.28 -0.43 16 30 H 0.06 -0.08 7.79 -51.93 -0.40 -0.49 16 31 H 0.06 -0.03 8.14 -51.93 -0.42 -0.45 16 32 H 0.07 -0.16 8.14 -51.93 -0.42 -0.59 16 33 H 0.05 -0.07 8.14 -51.92 -0.42 -0.50 16 34 H 0.07 -0.17 6.19 -51.93 -0.32 -0.49 16 35 H 0.07 -0.11 6.44 -51.93 -0.33 -0.44 16 36 H 0.13 0.06 4.54 -52.49 -0.24 -0.18 16 37 H 0.06 -0.02 7.65 -51.93 -0.40 -0.42 16 38 H 0.06 -0.02 7.67 -51.93 -0.40 -0.42 16 39 H 0.07 -0.11 8.14 -51.93 -0.42 -0.54 16 40 H 0.07 -0.12 8.14 -51.93 -0.42 -0.55 16 41 H 0.07 0.08 8.14 -51.93 -0.42 -0.34 16 42 H 0.07 0.03 8.14 -51.93 -0.42 -0.39 16 43 H 0.38 -0.80 9.08 45.56 0.41 -0.38 16 44 H 0.07 0.09 8.14 -51.93 -0.42 -0.33 16 45 H 0.07 -0.02 8.14 -51.93 -0.42 -0.45 16 46 H 0.08 0.17 7.82 -51.93 -0.41 -0.24 16 47 H 0.06 0.00 8.14 -51.93 -0.42 -0.42 16 48 H 0.11 0.37 7.82 -51.93 -0.41 -0.04 16 49 H 0.37 -0.62 8.70 45.56 0.40 -0.23 16 50 H -0.26 -0.76 7.11 56.52 0.40 -0.36 16 51 H -0.26 -0.96 7.11 56.52 0.40 -0.55 16 52 H 0.13 -0.26 5.12 -52.49 -0.27 -0.53 16 53 H 0.13 -0.12 5.74 -52.49 -0.30 -0.42 16 LS Contribution 401.82 15.07 6.06 6.06 Total: 0.00 -6.72 401.82 -11.04 -17.76 By element: Atomic # 1 Polarization: -4.13 SS G_CDS: -8.40 Total: -12.52 kcal Atomic # 6 Polarization: 0.07 SS G_CDS: -2.01 Total: -1.95 kcal Atomic # 7 Polarization: 0.08 SS G_CDS: -0.50 Total: -0.42 kcal Atomic # 8 Polarization: -3.07 SS G_CDS: -1.10 Total: -4.17 kcal Atomic # 14 Polarization: 0.33 SS G_CDS: -5.08 Total: -4.75 kcal Total LS contribution 6.06 Total: 6.06 kcal Total: -6.72 -11.04 -17.76 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. s_34_15096556_16737256.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 -80.263 kcal (2) G-P(sol) polarization free energy of solvation -6.722 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -86.984 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -11.037 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -17.758 kcal (6) G-S(sol) free energy of system = (1) + (5) -98.021 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.20 seconds