Wall clock time and date at job start Thu Mar 4 2021 15:41:35 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 * SM5.42R - SM5.42R CALCULATIONS WILL BE PERFORMED * - CHARGE MODEL 2 WILL BE USED (CM2A) * - THE SOLVENT IS WATER ******************************************************************************* 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 1.52993 * 1 3 3 C 1.53007 * 109.47191 * 2 1 4 4 C 1.53000 * 109.47368 * 239.99537 * 2 1 3 5 5 O 1.45203 * 109.46765 * 119.99569 * 2 1 3 6 6 C 1.34639 * 117.00399 * 60.00124 * 5 2 1 7 7 O 1.21518 * 119.99180 * 0.02562 * 6 5 2 8 8 N 1.34771 * 120.00679 * 179.97438 * 6 5 2 9 9 C 1.46497 * 120.00251 * 180.02562 * 8 6 5 10 10 H 1.08993 * 112.85301 * 23.80101 * 9 8 6 11 11 C 1.53781 * 113.61610 * 155.00211 * 9 8 6 12 12 C 1.53777 * 87.08160 * 140.06310 * 11 9 8 13 13 F 1.39900 * 113.61655 * 89.19934 * 12 11 9 14 14 C 1.53003 * 113.61021 * 220.01809 * 12 11 9 15 15 N 1.46501 * 109.46742 * 184.99869 * 14 12 11 16 16 C 1.34777 * 119.99897 * 179.97438 * 15 14 12 17 17 O 1.21284 * 119.99955 * 359.97438 * 16 15 14 18 18 C 1.50697 * 120.00143 * 180.02562 * 16 15 14 19 19 C 1.53043 * 109.19238 * 179.22373 * 18 16 15 20 20 C 1.53538 * 108.56512 * 169.74488 * 19 18 16 21 21 N 1.47136 * 107.53522 * 298.88315 * 20 19 18 22 22 C 1.38927 * 118.81058 * 44.06904 * 21 20 19 23 23 C 1.31113 * 121.84612 * 346.19809 * 22 21 20 24 24 C 1.50702 * 118.54694 * 180.68961 * 23 22 21 25 25 O 1.42895 * 109.47177 * 120.00604 * 24 23 22 26 26 Si 1.86297 * 109.47193 * 359.97438 * 24 23 22 27 27 C 1.53781 * 113.68647 * 252.53441 * 9 8 6 28 28 H 1.08995 * 109.47513 * 300.00457 * 1 2 3 29 29 H 1.09007 * 109.46863 * 60.00340 * 1 2 3 30 30 H 1.09000 * 109.47385 * 180.02562 * 1 2 3 31 31 H 1.08996 * 109.46857 * 179.97438 * 3 2 1 32 32 H 1.08993 * 109.46878 * 299.99628 * 3 2 1 33 33 H 1.09002 * 109.46928 * 59.99482 * 3 2 1 34 34 H 1.08994 * 109.47052 * 299.99756 * 4 2 1 35 35 H 1.08992 * 109.46736 * 60.00608 * 4 2 1 36 36 H 1.09000 * 109.46672 * 180.02562 * 4 2 1 37 37 H 0.97009 * 119.99666 * 0.02562 * 8 6 5 38 38 H 1.09005 * 113.61631 * 25.51125 * 11 9 8 39 39 H 1.08999 * 113.61365 * 254.61319 * 11 9 8 40 40 H 1.09002 * 109.47234 * 65.00245 * 14 12 11 41 41 H 1.09000 * 109.47514 * 304.99528 * 14 12 11 42 42 H 0.96992 * 120.00495 * 0.02562 * 15 14 12 43 43 H 1.09004 * 109.32983 * 59.65811 * 18 16 15 44 44 H 1.09003 * 109.61914 * 289.46697 * 19 18 16 45 45 H 1.09001 * 109.62307 * 50.02031 * 19 18 16 46 46 H 1.09003 * 109.82180 * 58.59008 * 20 19 18 47 47 H 1.08997 * 109.82658 * 179.50832 * 20 19 18 48 48 H 0.97003 * 120.63539 * 223.83873 * 21 20 19 49 49 H 1.08002 * 119.08021 * 166.48659 * 22 21 20 50 50 H 1.09007 * 109.46716 * 240.00183 * 24 23 22 51 51 H 0.96706 * 113.99776 * 299.99292 * 25 24 23 52 52 H 1.48498 * 110.00084 * 180.02562 * 26 24 23 53 53 H 1.48500 * 110.00051 * 301.32389 * 26 24 23 54 54 H 1.08997 * 113.61637 * 105.46167 * 27 9 8 55 55 H 1.09004 * 113.61797 * 334.55553 * 27 9 8 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 1.5299 0.0000 0.0000 3 6 2.0400 1.4426 0.0000 4 6 2.0400 -0.7213 -1.2492 5 8 2.0139 -0.6844 1.1857 6 6 1.6521 -1.9723 1.3386 7 8 0.9515 -2.5096 0.5037 8 7 2.0678 -2.6656 2.4169 9 6 1.6746 -4.0670 2.5829 10 1 1.4222 -4.5505 1.6392 11 6 2.6482 -4.8813 3.4512 12 6 1.4111 -5.5564 4.0665 13 9 0.9958 -6.7006 3.3769 14 6 1.5222 -5.7801 5.5760 15 7 0.3551 -6.5309 6.0456 16 6 0.2371 -6.8462 7.3506 17 8 1.0973 -6.5087 8.1362 18 6 -0.9631 -7.6189 7.8336 19 6 -0.8358 -7.8562 9.3401 20 6 -2.1693 -8.4100 9.8622 21 7 -3.2033 -7.3965 9.6000 22 6 -3.2222 -6.7638 8.3633 23 6 -2.2109 -6.8390 7.5322 24 6 -2.3045 -6.1104 6.2163 25 8 -1.2461 -5.1547 6.1248 26 14 -3.9448 -5.2340 6.1070 27 6 0.6280 -4.2883 3.6877 28 1 -0.3634 0.5139 0.8899 29 1 -0.3633 0.5138 -0.8901 30 1 -0.3634 -1.0276 0.0005 31 1 3.1299 1.4425 0.0005 32 1 1.6767 1.9563 -0.8900 33 1 1.6765 1.9564 0.8900 34 1 1.6767 -1.7490 -1.2491 35 1 1.6768 -0.2075 -2.1391 36 1 3.1300 -0.7217 -1.2488 37 1 2.6274 -2.2366 3.0832 38 1 3.2128 -4.2753 4.1599 39 1 3.2782 -5.5625 2.8793 40 1 1.5628 -4.8166 6.0841 41 1 2.4289 -6.3444 5.7940 42 1 -0.3324 -6.8017 5.4172 43 1 -1.0048 -8.5792 7.3194 44 1 -0.0404 -8.5766 9.5312 45 1 -0.6091 -6.9151 9.8411 46 1 -2.4140 -9.3361 9.3419 47 1 -2.0985 -8.5950 10.9340 48 1 -3.8623 -7.1761 10.2768 49 1 -4.0924 -6.1900 8.0805 50 1 -2.2199 -6.8257 5.3981 51 1 -1.2589 -4.4856 6.8229 52 1 -4.0497 -4.5121 4.8135 53 1 -5.0535 -6.2139 6.2326 54 1 -0.3730 -4.4909 3.3066 55 1 0.6402 -3.5202 4.4610 There are 73 doubly filled levels RHF calculation, no. of doubly occupied orbitals= 73 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) F: (AM1): M.J.S. DEWAR AND E. G. ZOEBISCH, THEOCHEM, 180, 1 (1988). 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=WATER m_22_16499080_15608500.mol2 55 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED SCF FIELD WAS ACHIEVED Wall clock time and date at job start Thu Mar 4 2021 15:41:35 Heat of formation + Delta-G solvation = -121.057804 kcal Electronic energy + Delta-G solvation = -38382.373831 eV Core-core repulsion = 33337.799804 eV Total energy + Delta-G solvation = -5044.574027 eV No. of doubly occupied orbitals = 73 and no. of open levels = 1 Molecular weight (most abundant/longest-lived isotopes) = 386.210 amu Computer time = 1.53 seconds Orbital eigenvalues (eV) -48.84861 -41.88680 -41.43155 -39.92228 -39.04330 -37.89730 -37.59591 -35.61538 -35.12936 -33.91511 -33.33591 -32.68750 -29.20982 -28.39397 -28.31770 -27.12047 -27.00597 -25.72928 -24.49015 -23.16746 -22.47551 -21.63475 -21.40846 -20.66079 -19.38901 -19.21354 -18.86655 -18.30580 -17.70733 -17.47984 -17.24718 -17.03044 -16.90430 -16.50588 -16.36909 -15.92158 -15.88524 -15.72222 -15.58663 -15.36921 -15.27494 -15.03379 -14.71646 -14.50625 -14.45623 -14.35091 -14.00127 -13.91585 -13.66697 -13.36594 -13.32319 -13.25997 -13.07251 -12.95477 -12.93284 -12.88260 -12.75217 -12.55833 -12.44400 -12.31614 -12.11034 -11.85863 -11.84224 -11.71028 -11.41938 -11.38005 -11.32188 -11.14633 -10.65375 -10.41703 -10.22373 -9.39623 -8.39629 -4.95849 1.11826 1.30279 1.46050 1.63938 1.69572 1.89530 2.03056 2.35593 2.69692 3.02448 3.11188 3.15580 3.39466 3.57531 3.62840 3.66974 3.72174 3.76920 3.77792 3.91248 3.92406 4.06192 4.25061 4.25429 4.38181 4.42307 4.44808 4.52589 4.58830 4.59308 4.62809 4.65517 4.67231 4.69648 4.74341 4.76260 4.81668 4.82731 4.85884 4.87749 4.89578 4.95606 5.05795 5.16325 5.24743 5.25923 5.28700 5.31353 5.39855 5.48619 5.56155 5.62819 6.34787 6.36588 6.70868 6.87297 7.00219 7.31051 7.44194 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.180 4.180 2 C 0.128 3.872 3 C -0.137 4.137 4 C -0.181 4.181 5 O -0.367 6.367 6 C 0.644 3.356 7 O -0.596 6.596 8 N -0.685 5.685 9 C 0.135 3.865 10 H 0.099 0.901 11 C -0.144 4.144 12 C 0.091 3.909 13 F -0.201 7.201 14 C 0.127 3.873 15 N -0.681 5.681 16 C 0.533 3.467 17 O -0.593 6.593 18 C -0.038 4.038 19 C -0.115 4.115 20 C 0.121 3.879 21 N -0.747 5.747 22 C 0.158 3.842 23 C -0.294 4.294 24 C -0.051 4.051 25 O -0.539 6.539 26 Si 0.759 3.241 27 C -0.142 4.142 28 H 0.063 0.937 29 H 0.086 0.914 30 H 0.061 0.939 31 H 0.070 0.930 32 H 0.098 0.902 33 H 0.070 0.930 34 H 0.062 0.938 35 H 0.086 0.914 36 H 0.062 0.938 37 H 0.421 0.579 38 H 0.136 0.864 39 H 0.094 0.906 40 H 0.096 0.904 41 H 0.064 0.936 42 H 0.408 0.592 43 H 0.092 0.908 44 H 0.072 0.928 45 H 0.063 0.937 46 H 0.063 0.937 47 H 0.098 0.902 48 H 0.413 0.587 49 H 0.146 0.854 50 H 0.099 0.901 51 H 0.379 0.621 52 H -0.309 1.309 53 H -0.293 1.293 54 H 0.072 0.928 55 H 0.124 0.876 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -1.765 2.842 4.400 5.528 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 -0.237 4.237 2 C 0.091 3.909 3 C -0.194 4.194 4 C -0.238 4.238 5 O -0.282 6.282 6 C 0.397 3.603 7 O -0.487 6.487 8 N -0.344 5.344 9 C 0.031 3.969 10 H 0.117 0.883 11 C -0.183 4.183 12 C 0.071 3.929 13 F -0.181 7.181 14 C 0.003 3.997 15 N -0.333 5.333 16 C 0.321 3.679 17 O -0.475 6.475 18 C -0.059 4.059 19 C -0.154 4.154 20 C -0.003 4.003 21 N -0.377 5.377 22 C 0.035 3.965 23 C -0.306 4.306 24 C -0.163 4.163 25 O -0.346 6.346 26 Si 0.668 3.332 27 C -0.181 4.181 28 H 0.082 0.918 29 H 0.105 0.895 30 H 0.080 0.920 31 H 0.089 0.911 32 H 0.116 0.884 33 H 0.089 0.911 34 H 0.081 0.919 35 H 0.105 0.895 36 H 0.081 0.919 37 H 0.259 0.741 38 H 0.154 0.846 39 H 0.113 0.887 40 H 0.114 0.886 41 H 0.082 0.918 42 H 0.247 0.753 43 H 0.110 0.890 44 H 0.091 0.909 45 H 0.082 0.918 46 H 0.081 0.919 47 H 0.116 0.884 48 H 0.250 0.750 49 H 0.162 0.838 50 H 0.117 0.883 51 H 0.229 0.771 52 H -0.238 1.238 53 H -0.221 1.221 54 H 0.091 0.909 55 H 0.143 0.857 Dipole moment (debyes) X Y Z Total from point charges -2.014 2.505 3.513 4.762 hybrid contribution -0.220 -0.757 -0.459 0.913 sum -2.234 1.747 3.054 4.168 Atomic orbital electron populations 1.22472 0.94116 1.03601 1.03552 1.22348 0.94404 0.92629 0.81479 1.21891 1.02496 0.90767 1.04286 1.22477 1.01683 1.02188 0.97442 1.86313 1.71475 1.23192 1.47216 1.18415 0.78588 0.80829 0.82432 1.90916 1.42292 1.70969 1.44487 1.44593 1.54986 1.11708 1.23120 1.22490 0.96450 0.79093 0.98853 0.88306 1.24004 0.96173 0.98822 0.99274 1.21804 0.97989 0.82424 0.90645 1.92842 1.91427 1.52754 1.81125 1.21567 0.89274 0.98609 0.90288 1.45789 1.23505 1.55379 1.08675 1.20512 0.86733 0.78891 0.81783 1.90672 1.44141 1.57025 1.55616 1.19644 0.90909 0.98016 0.97370 1.21643 0.97908 1.02126 0.93684 1.21679 0.86220 0.90560 1.01883 1.44680 1.35130 1.43538 1.14392 1.20568 0.96108 0.93771 0.86032 1.20492 0.96178 1.13232 1.00664 1.24599 1.01888 0.93685 0.96117 1.86766 1.49189 1.42794 1.55820 0.94027 0.73640 0.82118 0.83392 1.24032 0.98878 0.96349 0.98838 0.91803 0.89525 0.91961 0.91112 0.88371 0.91053 0.91938 0.89497 0.91864 0.74114 0.84558 0.88732 0.88611 0.91795 0.75322 0.89003 0.90949 0.91821 0.91901 0.88358 0.75044 0.83768 0.88334 0.77145 1.23796 1.22100 0.90922 0.85748 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 14. 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 -0.18 -0.67 8.37 71.98 0.60 -0.06 16 2 C 0.13 0.41 1.13 -10.79 -0.01 0.39 16 3 C -0.14 0.29 8.85 71.98 0.64 0.92 16 4 C -0.18 -0.68 8.37 71.98 0.60 -0.08 16 5 O -0.37 -1.96 9.94 -55.48 -0.55 -2.52 16 6 C 0.64 4.37 8.06 129.79 1.05 5.42 16 7 O -0.60 -7.69 11.48 19.78 0.23 -7.47 16 8 N -0.68 0.18 5.36 -567.62 -3.04 -2.86 16 9 C 0.14 -0.05 4.22 45.52 0.19 0.14 16 10 H 0.10 0.52 7.46 -2.39 -0.02 0.50 16 11 C -0.14 0.70 7.29 31.12 0.23 0.93 16 12 C 0.09 -0.15 1.74 -10.27 -0.02 -0.17 16 13 F -0.20 -0.82 16.58 44.97 0.75 -0.08 16 14 C 0.13 -0.11 5.11 86.38 0.44 0.33 16 15 N -0.68 -0.54 2.89 -463.05 -1.34 -1.88 16 16 C 0.53 2.33 6.29 87.66 0.55 2.88 16 17 O -0.59 -7.07 15.78 -3.04 -0.05 -7.12 16 18 C -0.04 -0.02 2.75 -12.43 -0.03 -0.05 16 19 C -0.11 -0.03 4.90 30.79 0.15 0.12 16 20 C 0.12 -0.55 7.16 86.44 0.62 0.07 16 21 N -0.75 4.12 5.83 -345.67 -2.02 2.10 16 22 C 0.16 -0.71 9.63 83.42 0.80 0.10 16 23 C -0.29 0.79 5.26 -16.76 -0.09 0.70 16 24 C -0.05 0.19 1.83 71.24 0.13 0.32 16 25 O -0.54 2.38 7.80 -148.98 -1.16 1.21 16 26 Si 0.76 -2.71 29.68 68.60 2.04 -0.67 16 27 C -0.14 0.29 7.20 31.12 0.22 0.51 16 28 H 0.06 0.17 8.14 -2.39 -0.02 0.15 16 29 H 0.09 0.03 8.14 -2.38 -0.02 0.01 16 30 H 0.06 0.58 5.88 -2.39 -0.01 0.57 16 31 H 0.07 -0.17 8.14 -2.39 -0.02 -0.19 16 32 H 0.10 -0.51 8.14 -2.39 -0.02 -0.53 16 33 H 0.07 -0.18 8.14 -2.39 -0.02 -0.20 16 34 H 0.06 0.59 5.88 -2.39 -0.01 0.57 16 35 H 0.09 0.03 8.14 -2.39 -0.02 0.01 16 36 H 0.06 0.19 8.14 -2.39 -0.02 0.17 16 37 H 0.42 -2.45 8.84 -92.70 -0.82 -3.27 16 38 H 0.14 -1.36 8.08 -2.38 -0.02 -1.38 16 39 H 0.09 -0.39 8.14 -2.39 -0.02 -0.41 16 40 H 0.10 -0.24 7.84 -2.39 -0.02 -0.26 16 41 H 0.06 0.08 8.14 -2.39 -0.02 0.06 16 42 H 0.41 0.10 5.12 -92.71 -0.48 -0.38 16 43 H 0.09 -0.02 8.14 -2.38 -0.02 -0.04 16 44 H 0.07 0.09 8.14 -2.39 -0.02 0.07 16 45 H 0.06 0.27 7.74 -2.39 -0.02 0.25 16 46 H 0.06 -0.29 8.14 -2.39 -0.02 -0.31 16 47 H 0.10 -0.74 8.14 -2.39 -0.02 -0.76 16 48 H 0.41 -3.89 8.96 -92.71 -0.83 -4.73 16 49 H 0.15 -1.13 4.36 -2.91 -0.01 -1.15 16 50 H 0.10 -0.28 7.08 -2.38 -0.02 -0.29 16 51 H 0.38 -3.16 8.70 -74.05 -0.64 -3.80 16 52 H -0.31 -1.68 7.11 99.48 0.71 -0.98 16 53 H -0.29 -0.45 7.10 99.48 0.71 0.26 16 54 H 0.07 0.14 8.14 -2.39 -0.02 0.12 16 55 H 0.12 -0.66 7.90 -2.39 -0.02 -0.68 16 Total: 0.00 -22.56 425.55 -0.86 -23.42 By element: Atomic # 1 Polarization: -14.83 SS G_CDS: -1.78 Total: -16.61 kcal Atomic # 6 Polarization: 6.39 SS G_CDS: 6.07 Total: 12.46 kcal Atomic # 7 Polarization: 3.76 SS G_CDS: -6.40 Total: -2.64 kcal Atomic # 8 Polarization: -14.35 SS G_CDS: -1.53 Total: -15.89 kcal Atomic # 9 Polarization: -0.82 SS G_CDS: 0.75 Total: -0.08 kcal Atomic # 14 Polarization: -2.71 SS G_CDS: 2.04 Total: -0.67 kcal Total: -22.56 -0.86 -23.42 kcal The number of atoms in the molecule is 55 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. m_22_16499080_15608500.mol2 55 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 -97.640 kcal (2) G-P(sol) polarization free energy of solvation -22.562 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -120.202 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -0.856 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -23.418 kcal (6) G-S(sol) free energy of system = (1) + (5) -121.058 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.53 seconds