Wall clock time and date at job start Sun Mar 7 2021 05:37:07 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 1.42902 * 1 3 3 C 1.35994 * 116.99970 * 2 1 4 4 C 1.39154 * 120.07418 * 179.97438 * 3 2 1 5 5 O 1.35988 * 120.07176 * 0.02562 * 4 3 2 6 6 C 1.42898 * 117.00116 * 180.02562 * 5 4 3 7 7 C 1.50697 * 109.47428 * 180.02562 * 6 5 4 8 8 O 1.21278 * 119.99879 * 359.97438 * 7 6 5 9 9 N 1.34777 * 119.99981 * 180.02562 * 7 6 5 10 10 C 1.46505 * 119.99797 * 179.97438 * 9 7 6 11 11 H 1.08992 * 109.47276 * 325.00066 * 10 9 7 12 12 C 1.53002 * 109.46958 * 84.99979 * 10 9 7 13 13 C 1.52997 * 109.46978 * 180.02562 * 12 10 9 14 14 C 1.53006 * 109.47164 * 299.99874 * 13 12 10 15 15 H 1.08998 * 109.46505 * 299.99708 * 14 13 12 16 16 C 1.50697 * 109.47239 * 180.02562 * 14 13 12 17 17 N 1.30524 * 126.34822 * 144.68724 * 16 14 13 18 18 N 1.28592 * 109.67143 * 179.82050 * 17 16 14 19 19 C 1.30525 * 109.67603 * 0.44953 * 18 17 16 20 20 N 1.35492 * 107.30732 * 359.73083 * 19 18 17 21 21 C 1.52997 * 109.47127 * 59.99836 * 14 13 12 22 22 C 1.52996 * 109.46998 * 204.99519 * 10 9 7 23 23 C 1.38565 * 119.85418 * 180.29283 * 4 3 2 24 24 C 1.38247 * 119.99518 * 359.42887 * 23 4 3 25 25 C 1.38253 * 120.14821 * 0.59581 * 24 23 4 26 26 C 1.50702 * 119.92501 * 179.69792 * 25 24 23 27 27 O 1.42899 * 109.47405 * 244.97874 * 26 25 24 28 28 Si 1.86293 * 109.47414 * 4.98045 * 26 25 24 29 29 C 1.38241 * 120.14722 * 359.67785 * 25 24 23 30 30 H 1.09000 * 109.47122 * 300.00084 * 1 2 3 31 31 H 1.08998 * 109.47075 * 60.00454 * 1 2 3 32 32 H 1.09002 * 109.47131 * 180.02562 * 1 2 3 33 33 H 1.08998 * 109.47253 * 59.99634 * 6 5 4 34 34 H 1.09005 * 109.47090 * 299.99990 * 6 5 4 35 35 H 0.97001 * 120.00457 * 359.97438 * 9 7 6 36 36 H 1.09002 * 109.47097 * 299.99818 * 12 10 9 37 37 H 1.09001 * 109.47142 * 59.99782 * 12 10 9 38 38 H 1.09001 * 109.47375 * 59.99908 * 13 12 10 39 39 H 1.09000 * 109.47140 * 179.97438 * 13 12 10 40 40 H 1.07997 * 126.34919 * 179.72460 * 19 18 17 41 41 H 0.96997 * 126.98709 * 180.02562 * 20 19 18 42 42 H 1.09002 * 109.47153 * 180.02562 * 21 14 13 43 43 H 1.09001 * 109.46832 * 60.00321 * 21 14 13 44 44 H 1.09004 * 109.47368 * 60.00227 * 22 10 9 45 45 H 1.09001 * 109.47372 * 300.00383 * 22 10 9 46 46 H 1.07993 * 120.00092 * 179.70461 * 23 4 3 47 47 H 1.07998 * 119.92359 * 180.29320 * 24 23 4 48 48 H 1.09005 * 109.46874 * 124.97857 * 26 25 24 49 49 H 0.96699 * 113.99729 * 59.99886 * 27 26 25 50 50 H 1.48493 * 110.00223 * 179.97438 * 28 26 25 51 51 H 1.48502 * 110.00151 * 301.32077 * 28 26 25 52 52 H 1.08000 * 119.99978 * 180.02562 * 29 25 24 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 2.0464 1.2117 0.0000 4 6 3.4360 1.2864 0.0005 5 8 4.1795 0.1478 0.0005 6 6 5.6003 0.3007 0.0017 7 6 6.2519 -1.0581 0.0009 8 8 5.5670 -2.0590 -0.0001 9 7 7.5957 -1.1610 0.0022 10 6 8.2291 -2.4821 0.0020 11 1 7.6266 -3.1740 0.5903 12 6 8.3378 -2.9953 -1.4353 13 6 8.9987 -4.3751 -1.4354 14 6 10.3974 -4.2708 -0.8240 15 1 11.0003 -3.5791 -1.4124 16 6 11.0487 -5.6298 -0.8248 17 7 12.3159 -5.8802 -1.0118 18 7 12.5214 -7.1478 -0.9432 19 6 11.3931 -7.7644 -0.7188 20 7 10.4262 -6.8187 -0.6373 21 6 10.2888 -3.7575 0.6132 22 6 9.6278 -2.3770 0.6131 23 6 4.0603 2.5234 0.0067 24 6 3.3028 3.6799 0.0003 25 6 1.9223 3.6057 0.0003 26 6 1.1015 4.8696 0.0002 27 8 0.3641 4.9589 1.2210 28 14 2.2307 6.3434 -0.1523 29 6 1.2931 2.3748 -0.0002 30 1 -0.3633 0.5138 0.8900 31 1 -0.3633 0.5138 -0.8900 32 1 -0.3633 -1.0277 0.0005 33 1 5.9059 0.8501 0.8921 34 1 5.9072 0.8510 -0.8879 35 1 8.1435 -0.3605 0.0034 36 1 7.3413 -3.0701 -1.8707 37 1 8.9404 -2.3033 -2.0236 38 1 8.3958 -5.0669 -0.8472 39 1 9.0757 -4.7410 -2.4593 40 1 11.2556 -8.8307 -0.6170 41 1 9.4806 -6.9632 -0.4768 42 1 11.2853 -3.6827 1.0486 43 1 9.6859 -4.4493 1.2014 44 1 9.5505 -2.0114 1.6370 45 1 10.2304 -1.6850 0.0248 46 1 5.1385 2.5840 0.0119 47 1 3.7907 4.6434 0.0003 48 1 0.4096 4.8534 -0.8419 49 1 0.9171 4.9778 2.0140 50 1 1.4334 7.5962 -0.1541 51 1 3.1999 6.3593 0.9728 52 1 0.2145 2.3196 -0.0006 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_60476.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 05:37:07 Heat of formation + Delta-G solvation = -33.510132 kcal Electronic energy + Delta-G solvation = -35266.634449 eV Core-core repulsion = 30428.055515 eV Total energy + Delta-G solvation = -4838.578934 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 = 1.57 seconds Orbital eigenvalues (eV) -44.12204 -41.84459 -41.15779 -39.79701 -39.04110 -38.83084 -37.03162 -35.79240 -34.58495 -32.71431 -32.09729 -32.01014 -31.48837 -30.29455 -28.86956 -28.39646 -26.25911 -24.83695 -24.23857 -23.64308 -23.26147 -22.57011 -22.17074 -21.63625 -21.06158 -19.81482 -19.37670 -18.69646 -18.38473 -18.01439 -17.56336 -17.35282 -17.11447 -16.81668 -16.65233 -16.41266 -16.19284 -16.17479 -15.89182 -15.82322 -15.64694 -15.40801 -15.20807 -14.96963 -14.73112 -14.35815 -14.20793 -13.93504 -13.77656 -13.57283 -13.51284 -13.44948 -12.86909 -12.66341 -12.59261 -12.54527 -12.45960 -12.34344 -12.22471 -12.15704 -12.03588 -11.86829 -11.81097 -11.66606 -11.62510 -11.30898 -10.89615 -10.65405 -10.25249 -10.17732 -9.82094 -8.89451 -5.01108 0.14086 0.26490 0.81388 1.22981 1.37998 1.45135 1.53897 1.77303 1.91335 1.92523 2.28332 2.46359 2.53022 3.06424 3.30587 3.31538 3.43182 3.47073 3.59394 3.65864 3.72243 3.75229 3.79605 3.84959 3.90756 3.93054 3.99369 4.08853 4.11467 4.15122 4.18479 4.22727 4.25821 4.30488 4.33103 4.44113 4.48230 4.50140 4.53449 4.59455 4.61842 4.78402 4.81604 4.86782 4.87759 4.96692 5.04135 5.06956 5.09298 5.12502 5.29112 5.33792 5.52053 5.92464 6.03679 6.27016 6.35114 6.51024 7.05187 7.75985 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C 0.025 3.975 2 O -0.302 6.302 3 C 0.107 3.893 4 C 0.104 3.896 5 O -0.277 6.277 6 C 0.038 3.962 7 C 0.517 3.483 8 O -0.509 6.509 9 N -0.725 5.725 10 C 0.146 3.854 11 H 0.091 0.909 12 C -0.128 4.128 13 C -0.115 4.115 14 C -0.003 4.003 15 H 0.110 0.890 16 C 0.185 3.815 17 N -0.291 5.291 18 N -0.296 5.296 19 C 0.154 3.846 20 N -0.581 5.581 21 C -0.107 4.107 22 C -0.125 4.125 23 C -0.169 4.169 24 C -0.115 4.115 25 C -0.113 4.113 26 C -0.073 4.073 27 O -0.530 6.530 28 Si 0.688 3.312 29 C -0.146 4.146 30 H 0.056 0.944 31 H 0.057 0.943 32 H 0.103 0.897 33 H 0.094 0.906 34 H 0.095 0.905 35 H 0.403 0.597 36 H 0.076 0.924 37 H 0.073 0.927 38 H 0.065 0.935 39 H 0.075 0.925 40 H 0.223 0.777 41 H 0.429 0.571 42 H 0.081 0.919 43 H 0.067 0.933 44 H 0.077 0.923 45 H 0.077 0.923 46 H 0.139 0.861 47 H 0.133 0.867 48 H 0.118 0.882 49 H 0.376 0.624 50 H -0.257 1.257 51 H -0.260 1.260 52 H 0.140 0.860 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -0.673 3.093 -0.461 3.199 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 -0.070 4.070 2 O -0.215 6.215 3 C 0.061 3.939 4 C 0.059 3.941 5 O -0.189 6.189 6 C -0.041 4.041 7 C 0.302 3.698 8 O -0.382 6.382 9 N -0.379 5.379 10 C 0.042 3.958 11 H 0.109 0.891 12 C -0.167 4.167 13 C -0.154 4.154 14 C -0.024 4.024 15 H 0.129 0.871 16 C -0.084 4.084 17 N -0.131 5.131 18 N -0.135 5.135 19 C -0.135 4.135 20 N -0.194 5.194 21 C -0.146 4.146 22 C -0.163 4.163 23 C -0.188 4.188 24 C -0.132 4.132 25 C -0.113 4.113 26 C -0.183 4.183 27 O -0.336 6.336 28 Si 0.589 3.411 29 C -0.165 4.165 30 H 0.075 0.925 31 H 0.075 0.925 32 H 0.121 0.879 33 H 0.112 0.888 34 H 0.113 0.887 35 H 0.237 0.763 36 H 0.094 0.906 37 H 0.091 0.909 38 H 0.083 0.917 39 H 0.094 0.906 40 H 0.239 0.761 41 H 0.269 0.731 42 H 0.099 0.901 43 H 0.086 0.914 44 H 0.096 0.904 45 H 0.095 0.905 46 H 0.157 0.843 47 H 0.150 0.850 48 H 0.136 0.864 49 H 0.224 0.776 50 H -0.182 1.182 51 H -0.185 1.185 52 H 0.158 0.842 Dipole moment (debyes) X Y Z Total from point charges 0.255 2.908 -0.786 3.023 hybrid contribution -1.913 -0.194 1.439 2.402 sum -1.659 2.714 0.653 3.247 Atomic orbital electron populations 1.23133 0.78108 1.04406 1.01386 1.86245 1.21342 1.25356 1.88552 1.18280 0.89016 0.85554 1.01054 1.18280 0.88297 0.85770 1.01787 1.86273 1.16039 1.27759 1.88858 1.22489 0.81309 0.96313 1.04013 1.20026 0.82486 0.90550 0.76775 1.90792 1.62621 1.38002 1.46789 1.45874 1.05857 1.09650 1.76512 1.21053 0.93696 0.84231 0.96860 0.89077 1.21906 1.01924 0.96141 0.96723 1.21603 0.94025 0.98034 1.01712 1.19781 0.95866 0.88138 0.98607 0.87148 1.24859 0.90728 0.89554 1.03249 1.74303 1.12332 1.08009 1.18477 1.74307 1.22391 0.99408 1.17439 1.26589 0.84703 0.98053 1.04128 1.44140 1.12872 1.07115 1.55238 1.21540 1.02099 0.96175 0.94778 1.21816 0.94559 0.97841 1.02103 1.20990 1.00453 0.90672 1.06705 1.20741 0.92896 0.98049 1.01556 1.19975 0.93693 0.95096 1.02583 1.25010 1.01677 1.01714 0.89865 1.86602 1.36167 1.95487 1.15369 0.94936 0.79625 0.76452 0.90083 1.20947 1.00377 0.90417 1.04737 0.92527 0.92488 0.87878 0.88834 0.88685 0.76283 0.90574 0.90874 0.91654 0.90642 0.76107 0.73103 0.90083 0.91429 0.90401 0.90460 0.84306 0.84988 0.86416 0.77614 1.18222 1.18476 0.84203 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 0.00 9.81 101.05 0.99 0.99 16 2 O -0.30 -1.16 10.28 -34.23 -0.35 -1.52 16 3 C 0.11 0.30 6.70 -39.12 -0.26 0.04 16 4 C 0.10 0.22 6.70 -39.12 -0.26 -0.04 16 5 O -0.28 -0.87 9.45 -47.33 -0.45 -1.32 16 6 C 0.04 -0.06 5.22 36.00 0.19 0.13 16 7 C 0.52 0.20 7.87 -10.99 -0.09 0.11 16 8 O -0.51 -2.78 16.16 -14.35 -0.23 -3.01 16 9 N -0.73 2.27 5.08 -53.81 -0.27 2.00 16 10 C 0.15 -0.40 2.45 -67.93 -0.17 -0.57 16 11 H 0.09 -0.06 7.58 -51.93 -0.39 -0.46 16 12 C -0.13 0.34 5.49 -26.73 -0.15 0.19 16 13 C -0.11 0.36 4.97 -26.73 -0.13 0.22 16 14 C 0.00 0.01 2.66 -91.77 -0.24 -0.24 16 15 H 0.11 -0.24 8.14 -51.93 -0.42 -0.66 16 16 C 0.19 0.09 6.99 -154.98 -1.08 -0.99 16 17 N -0.29 -1.33 12.21 32.80 0.40 -0.93 16 18 N -0.30 -1.35 12.21 29.69 0.36 -0.99 16 19 C 0.15 -0.02 13.19 -89.94 -1.19 -1.21 16 20 N -0.58 1.02 5.96 -11.36 -0.07 0.95 16 21 C -0.11 0.33 5.19 -26.71 -0.14 0.20 16 22 C -0.13 0.53 5.39 -26.71 -0.14 0.39 16 23 C -0.17 0.14 9.04 -39.46 -0.36 -0.22 16 24 C -0.11 0.12 8.66 -39.57 -0.34 -0.23 16 25 C -0.11 0.01 5.35 -104.61 -0.56 -0.55 16 26 C -0.07 0.05 2.80 36.01 0.10 0.15 16 27 O -0.53 -0.42 12.83 -35.23 -0.45 -0.87 16 28 Si 0.69 -1.13 29.88 -169.99 -5.08 -6.21 16 29 C -0.15 -0.16 8.67 -39.46 -0.34 -0.50 16 30 H 0.06 -0.06 7.66 -51.93 -0.40 -0.45 16 31 H 0.06 -0.07 7.66 -51.93 -0.40 -0.47 16 32 H 0.10 -0.15 8.14 -51.93 -0.42 -0.57 16 33 H 0.09 -0.39 7.65 -51.93 -0.40 -0.79 16 34 H 0.10 -0.41 7.67 -51.93 -0.40 -0.81 16 35 H 0.40 -2.53 8.60 -40.82 -0.35 -2.88 16 36 H 0.08 -0.04 8.14 -51.93 -0.42 -0.46 16 37 H 0.07 -0.25 8.14 -51.93 -0.42 -0.67 16 38 H 0.06 -0.24 7.52 -51.93 -0.39 -0.63 16 39 H 0.07 -0.20 8.14 -51.93 -0.42 -0.62 16 40 H 0.22 -0.98 8.06 -52.49 -0.42 -1.41 16 41 H 0.43 -2.15 8.29 -40.82 -0.34 -2.49 16 42 H 0.08 -0.18 8.14 -51.93 -0.42 -0.60 16 43 H 0.07 -0.21 8.14 -51.93 -0.42 -0.63 16 44 H 0.08 -0.34 8.14 -51.93 -0.42 -0.76 16 45 H 0.08 -0.40 8.14 -51.93 -0.42 -0.82 16 46 H 0.14 -0.55 6.30 -52.49 -0.33 -0.88 16 47 H 0.13 -0.39 4.83 -52.49 -0.25 -0.65 16 48 H 0.12 -0.17 7.96 -51.93 -0.41 -0.58 16 49 H 0.38 -0.73 8.70 45.56 0.40 -0.34 16 50 H -0.26 -0.46 7.11 56.52 0.40 -0.06 16 51 H -0.26 -0.01 7.01 56.52 0.40 0.39 16 52 H 0.14 0.01 6.30 -52.49 -0.33 -0.32 16 LS Contribution 423.40 15.07 6.38 6.38 Total: 0.00 -14.89 423.40 -11.36 -26.25 By element: Atomic # 1 Polarization: -11.20 SS G_CDS: -7.43 Total: -18.62 kcal Atomic # 6 Polarization: 2.06 SS G_CDS: -4.17 Total: -2.11 kcal Atomic # 7 Polarization: 0.61 SS G_CDS: 0.42 Total: 1.03 kcal Atomic # 8 Polarization: -5.23 SS G_CDS: -1.48 Total: -6.71 kcal Atomic # 14 Polarization: -1.13 SS G_CDS: -5.08 Total: -6.21 kcal Total LS contribution 6.38 Total: 6.38 kcal Total: -14.89 -11.36 -26.25 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_60476.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 -7.261 kcal (2) G-P(sol) polarization free energy of solvation -14.889 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -22.150 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -11.360 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -26.249 kcal (6) G-S(sol) free energy of system = (1) + (5) -33.510 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.57 seconds