Wall clock time and date at job start Sat Apr 11 2020 06:12:29 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 1.53006 * 1 3 3 C 1.52996 * 109.47243 * 2 1 4 4 C 1.52993 * 109.46879 * 180.02562 * 3 2 1 5 5 C 1.53009 * 109.47190 * 180.02562 * 4 3 2 6 6 H 1.09000 * 109.46765 * 54.99578 * 5 4 3 7 7 N 1.46505 * 109.46773 * 295.00179 * 5 4 3 8 8 C 1.34780 * 119.99366 * 299.99582 * 7 5 4 9 9 N 1.34783 * 119.99240 * 180.02562 * 8 7 5 10 10 O 1.21579 * 120.00643 * 0.02562 * 8 7 5 11 11 C 1.50694 * 109.47400 * 174.99853 * 5 4 3 12 12 O 1.21283 * 120.00167 * 99.99907 * 11 5 4 13 13 N 1.34776 * 120.00242 * 279.99971 * 11 5 4 14 14 C 1.46502 * 119.99963 * 179.97438 * 13 11 5 15 15 C 1.53007 * 109.46822 * 179.72251 * 14 13 11 16 16 C 1.53039 * 109.46139 * 295.03130 * 15 14 13 17 17 C 1.53189 * 109.31085 * 178.60325 * 16 15 14 18 18 N 1.46921 * 108.77087 * 54.65005 * 17 16 15 19 19 C 1.36946 * 120.63026 * 126.35749 * 18 17 16 20 20 H 1.07996 * 119.99835 * 331.86729 * 19 18 17 21 21 C 1.38804 * 119.99671 * 151.86527 * 19 18 17 22 22 N 1.31623 * 120.00220 * 343.07535 * 21 19 18 23 23 Si 1.86800 * 120.00070 * 163.07456 * 21 19 18 24 24 H 1.48506 * 109.46805 * 59.99989 * 23 21 19 25 25 H 1.48496 * 109.47391 * 179.97438 * 23 21 19 26 26 H 1.48496 * 109.47198 * 300.00268 * 23 21 19 27 27 C 1.46926 * 118.74182 * 306.38995 * 18 17 16 28 28 C 1.53034 * 109.45704 * 174.97459 * 15 14 13 29 29 H 1.08997 * 109.47377 * 180.02562 * 1 2 3 30 30 H 1.09004 * 109.46463 * 299.99977 * 1 2 3 31 31 H 1.09002 * 109.47194 * 59.99379 * 1 2 3 32 32 H 1.09004 * 109.46463 * 240.00023 * 2 1 3 33 33 H 1.09002 * 109.47194 * 120.00620 * 2 1 3 34 34 H 1.09006 * 109.46681 * 60.00301 * 3 2 1 35 35 H 1.08997 * 109.47091 * 300.00322 * 3 2 1 36 36 H 1.08998 * 109.47692 * 60.00248 * 4 3 2 37 37 H 1.09005 * 109.47213 * 299.99595 * 4 3 2 38 38 H 0.96992 * 120.00175 * 119.99902 * 7 5 4 39 39 H 0.96999 * 120.00203 * 359.97438 * 9 8 7 40 40 H 0.96993 * 119.99706 * 180.02562 * 9 8 7 41 41 H 0.97003 * 120.00064 * 359.72643 * 13 11 5 42 42 H 1.08990 * 109.47198 * 299.72189 * 14 13 11 43 43 H 1.08994 * 109.47089 * 59.73104 * 14 13 11 44 44 H 1.09001 * 109.45468 * 55.00233 * 15 14 13 45 45 H 1.09001 * 109.49560 * 298.56676 * 16 15 14 46 46 H 1.08998 * 109.49729 * 58.66478 * 16 15 14 47 47 H 1.09003 * 109.59982 * 294.86407 * 17 16 15 48 48 H 1.08999 * 109.70544 * 174.51072 * 17 16 15 49 49 H 0.97008 * 119.99850 * 180.02562 * 22 21 19 50 50 H 1.09003 * 109.58361 * 293.82061 * 27 18 17 51 51 H 1.08994 * 109.70687 * 173.45666 * 27 18 17 52 52 H 1.09001 * 109.49894 * 301.33986 * 28 15 14 53 53 H 1.09004 * 109.50180 * 61.43494 * 28 15 14 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 1.5301 0.0000 0.0000 3 6 2.0401 1.4425 0.0000 4 6 3.5700 1.4424 -0.0006 5 6 4.0801 2.8849 0.0000 6 1 3.6458 3.4234 0.8423 7 7 3.6920 3.5406 -1.2513 8 6 4.1161 3.0457 -2.4310 9 7 3.7595 3.6493 -3.5822 10 8 4.8203 2.0550 -2.4569 11 6 5.5820 2.8866 0.1232 12 8 6.2713 3.0401 -0.8629 13 7 6.1595 2.7175 1.3292 14 6 7.6196 2.7186 1.4489 15 6 8.0113 2.5162 2.9140 16 6 7.5358 3.7143 3.7391 17 6 7.8989 3.4920 5.2107 18 7 9.3408 3.2275 5.3071 19 6 10.1313 3.9669 6.1460 20 1 9.8588 4.9835 6.3881 21 6 11.2827 3.4098 6.6850 22 7 11.4494 2.1042 6.6742 23 14 12.5956 4.5128 7.4259 24 1 12.0130 5.2898 8.5494 25 1 13.7161 3.6788 7.9301 26 1 13.1010 5.4467 6.3879 27 6 9.9188 2.1549 4.4859 28 6 9.5328 2.3920 3.0224 29 1 -0.3634 -1.0276 0.0005 30 1 -0.3632 0.5139 0.8901 31 1 -0.3634 0.5139 -0.8899 32 1 1.8933 -0.5139 -0.8901 33 1 1.8934 -0.5139 0.8899 34 1 1.6767 1.9562 0.8901 35 1 1.6767 1.9563 -0.8899 36 1 3.9330 0.9287 -0.8908 37 1 3.9337 0.9284 0.8892 38 1 3.1299 4.3308 -1.2307 39 1 3.1973 4.4395 -3.5616 40 1 4.0643 3.2930 -4.4312 41 1 5.6083 2.5986 2.1185 42 1 8.0341 1.9100 0.8470 43 1 8.0123 3.6722 1.0963 44 1 7.5448 1.6066 3.2923 45 1 8.0211 4.6207 3.3773 46 1 6.4549 3.8163 3.6426 47 1 7.3439 2.6381 5.5993 48 1 7.6511 4.3823 5.7888 49 1 12.2539 1.7148 7.0513 50 1 9.5285 1.1919 4.8153 51 1 11.0044 2.1620 4.5832 52 1 9.8734 1.5529 2.4158 53 1 9.9991 3.3111 2.6675 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 ZINC000362414782.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 06:12:29 Heat of formation + Delta-G solvation = -69.974887 kcal Electronic energy + Delta-G solvation = -30591.937768 eV Core-core repulsion = 26498.233922 eV Total energy + Delta-G solvation = -4093.703846 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.226 amu Computer time = 3.30 seconds Orbital eigenvalues (eV) -40.70037 -39.00886 -37.72074 -36.43300 -34.87286 -34.36234 -33.65743 -32.80643 -30.96901 -30.52221 -29.69286 -27.67321 -26.15682 -23.97467 -23.04638 -22.27928 -21.84742 -21.14781 -20.84652 -19.95254 -19.07574 -18.74958 -17.66639 -16.88694 -16.58217 -16.06563 -15.68528 -15.24736 -14.90380 -14.80638 -14.50018 -14.34352 -14.13437 -13.97578 -13.69164 -13.50301 -13.40423 -13.20196 -12.98908 -12.89556 -12.32122 -12.28266 -12.08594 -11.77417 -11.54445 -11.38583 -11.30871 -11.16636 -10.96044 -10.87606 -10.70463 -10.48106 -10.29900 -10.20991 -10.19042 -9.91174 -9.88031 -9.69775 -9.52600 -9.45902 -8.97936 -8.82341 -8.44715 -6.64937 -5.77249 -3.19753 2.53658 2.83365 3.15710 3.39275 3.44615 3.45267 3.46641 4.27323 4.45330 4.51069 4.61779 4.67042 4.76973 4.90432 5.02656 5.12866 5.17997 5.28746 5.41012 5.41926 5.43946 5.45340 5.56398 5.61073 5.63805 5.78116 5.90251 5.91436 5.98150 6.01268 6.08572 6.11071 6.19011 6.26049 6.35160 6.46910 6.49882 6.55877 6.63414 6.73382 6.78472 6.79961 6.84242 7.00111 7.39606 7.63005 7.68380 7.80709 7.80923 8.36946 8.47228 8.63444 9.23292 9.86955 10.43704 11.31199 Molecular weight = 340.23amu Principal moments of inertia in cm(-1) A = 0.018026 B = 0.002120 C = 0.001989 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1552.959861 B =13206.825877 C =14071.039265 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.151 4.151 2 C -0.126 4.126 3 C -0.111 4.111 4 C -0.136 4.136 5 C 0.155 3.845 6 H 0.108 0.892 7 N -0.733 5.733 8 C 0.710 3.290 9 N -0.872 5.872 10 O -0.562 6.562 11 C 0.495 3.505 12 O -0.510 6.510 13 N -0.727 5.727 14 C 0.127 3.873 15 C -0.089 4.089 16 C -0.126 4.126 17 C 0.145 3.855 18 N -0.592 5.592 19 C -0.252 4.252 20 H 0.064 0.936 21 C 0.002 3.998 22 N -0.903 5.903 23 Si 0.902 3.098 24 H -0.283 1.283 25 H -0.291 1.291 26 H -0.284 1.284 27 C 0.172 3.828 28 C -0.133 4.133 29 H 0.052 0.948 30 H 0.053 0.947 31 H 0.051 0.949 32 H 0.061 0.939 33 H 0.063 0.937 34 H 0.061 0.939 35 H 0.061 0.939 36 H 0.095 0.905 37 H 0.075 0.925 38 H 0.398 0.602 39 H 0.392 0.608 40 H 0.413 0.587 41 H 0.397 0.603 42 H 0.062 0.938 43 H 0.062 0.938 44 H 0.068 0.932 45 H 0.058 0.942 46 H 0.046 0.954 47 H 0.016 0.984 48 H 0.052 0.948 49 H 0.254 0.746 50 H 0.017 0.983 51 H 0.087 0.913 52 H 0.050 0.950 53 H 0.057 0.943 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -23.275 1.322 -16.176 28.375 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 -0.209 4.209 2 C -0.163 4.163 3 C -0.149 4.149 4 C -0.174 4.174 5 C 0.045 3.955 6 H 0.125 0.875 7 N -0.389 5.389 8 C 0.409 3.591 9 N -0.441 5.441 10 O -0.437 6.437 11 C 0.278 3.722 12 O -0.383 6.383 13 N -0.380 5.380 14 C 0.003 3.997 15 C -0.108 4.108 16 C -0.165 4.165 17 C 0.019 3.981 18 N -0.315 5.315 19 C -0.382 4.382 20 H 0.082 0.918 21 C -0.197 4.197 22 N -0.548 5.548 23 Si 0.732 3.268 24 H -0.209 1.209 25 H -0.216 1.216 26 H -0.210 1.210 27 C 0.046 3.954 28 C -0.173 4.173 29 H 0.072 0.928 30 H 0.072 0.928 31 H 0.070 0.930 32 H 0.080 0.920 33 H 0.082 0.918 34 H 0.080 0.920 35 H 0.079 0.921 36 H 0.114 0.886 37 H 0.094 0.906 38 H 0.231 0.769 39 H 0.219 0.781 40 H 0.244 0.756 41 H 0.232 0.768 42 H 0.080 0.920 43 H 0.081 0.919 44 H 0.087 0.913 45 H 0.077 0.923 46 H 0.065 0.935 47 H 0.034 0.966 48 H 0.070 0.930 49 H 0.064 0.936 50 H 0.035 0.965 51 H 0.105 0.895 52 H 0.069 0.931 53 H 0.075 0.925 Dipole moment (debyes) X Y Z Total from point charges -21.986 0.461 -16.671 27.596 hybrid contribution 0.072 1.160 0.485 1.259 sum -21.915 1.621 -16.186 27.292 Atomic orbital electron populations 1.21767 0.95955 1.01555 1.01608 1.21522 0.95678 0.96862 1.02278 1.21542 0.94522 0.97009 1.01837 1.22022 0.95985 0.94448 1.04980 1.20709 0.92291 0.96007 0.86511 0.87464 1.44672 1.56679 1.33366 1.04227 1.15835 0.79569 0.83208 0.80508 1.42975 1.58898 1.34413 1.07791 1.90972 1.39959 1.26953 1.85789 1.20838 0.90540 0.77418 0.83433 1.90759 1.64344 1.46817 1.36387 1.46069 1.08365 1.74551 1.09060 1.21518 0.78872 1.01717 0.97568 1.21300 0.98198 0.99048 0.92266 1.22062 0.98341 0.97620 0.98484 1.20886 0.86664 0.98058 0.92495 1.44041 1.01463 1.39648 1.46372 1.19132 1.03999 0.93724 1.21356 0.91840 1.25044 1.00569 0.95324 0.98748 1.70023 1.27424 1.08826 1.48481 0.86375 0.81577 0.79855 0.78987 1.20920 1.21648 1.21046 1.20759 1.00177 0.89649 0.84800 1.22179 0.93082 1.00737 1.01296 0.92845 0.92762 0.92968 0.92026 0.91845 0.92034 0.92053 0.88629 0.90633 0.76867 0.78094 0.75556 0.76850 0.91984 0.91929 0.91343 0.92275 0.93518 0.96635 0.92956 0.93591 0.96459 0.89455 0.93081 0.92468 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 18. 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 -0.92 9.91 37.16 0.37 -0.55 16 2 C -0.13 -0.89 5.93 -26.73 -0.16 -1.05 16 3 C -0.11 -0.76 5.10 -26.74 -0.14 -0.90 16 4 C -0.14 -1.23 4.54 -26.73 -0.12 -1.35 16 5 C 0.15 1.41 3.01 -69.08 -0.21 1.20 16 6 H 0.11 0.62 8.14 -51.93 -0.42 0.19 16 7 N -0.73 -6.09 4.66 -59.81 -0.28 -6.37 16 8 C 0.71 8.06 7.59 -86.91 -0.66 7.40 16 9 N -0.87 -6.11 8.88 27.64 0.25 -5.86 16 10 O -0.56 -9.26 13.03 -18.19 -0.24 -9.49 16 11 C 0.49 6.68 6.82 -10.99 -0.07 6.60 16 12 O -0.51 -9.32 13.68 -17.93 -0.25 -9.57 16 13 N -0.73 -8.95 5.27 -60.30 -0.32 -9.27 16 14 C 0.13 1.88 5.06 -4.04 -0.02 1.86 16 15 C -0.09 -1.42 2.19 -90.58 -0.20 -1.62 16 16 C -0.13 -2.04 5.25 -26.61 -0.14 -2.18 16 17 C 0.15 2.94 6.52 -3.71 -0.02 2.92 16 18 N -0.59 -14.69 2.99 -172.32 -0.52 -15.21 16 19 C -0.25 -6.91 9.58 -15.06 -0.14 -7.06 16 20 H 0.06 1.71 7.88 -52.49 -0.41 1.29 16 21 C 0.00 0.05 4.92 -17.43 -0.09 -0.04 16 22 N -0.90 -26.25 11.19 55.49 0.62 -25.63 16 23 Si 0.90 21.75 29.59 -169.99 -5.03 16.73 16 24 H -0.28 -6.72 7.11 56.52 0.40 -6.32 16 25 H -0.29 -7.06 7.11 56.52 0.40 -6.65 16 26 H -0.28 -6.80 7.11 56.52 0.40 -6.40 16 27 C 0.17 4.07 5.30 -3.71 -0.02 4.05 16 28 C -0.13 -2.52 5.36 -26.61 -0.14 -2.66 16 29 H 0.05 0.31 8.14 -51.93 -0.42 -0.11 16 30 H 0.05 0.30 8.14 -51.93 -0.42 -0.12 16 31 H 0.05 0.30 8.14 -51.93 -0.42 -0.12 16 32 H 0.06 0.50 8.14 -51.93 -0.42 0.07 16 33 H 0.06 0.45 8.14 -51.93 -0.42 0.03 16 34 H 0.06 0.34 8.14 -51.93 -0.42 -0.08 16 35 H 0.06 0.43 7.75 -51.93 -0.40 0.02 16 36 H 0.10 1.21 6.04 -51.93 -0.31 0.89 16 37 H 0.08 0.64 8.14 -51.93 -0.42 0.22 16 38 H 0.40 1.88 8.84 -40.82 -0.36 1.52 16 39 H 0.39 1.36 8.84 -40.82 -0.36 1.00 16 40 H 0.41 2.71 8.93 -40.82 -0.36 2.34 16 41 H 0.40 3.87 7.65 -40.82 -0.31 3.56 16 42 H 0.06 0.99 8.14 -51.93 -0.42 0.57 16 43 H 0.06 1.01 8.14 -51.93 -0.42 0.59 16 44 H 0.07 1.08 8.14 -51.93 -0.42 0.66 16 45 H 0.06 1.04 8.14 -51.93 -0.42 0.61 16 46 H 0.05 0.61 7.15 -51.93 -0.37 0.24 16 47 H 0.02 0.32 8.14 -51.93 -0.42 -0.11 16 48 H 0.05 1.04 7.93 -51.93 -0.41 0.63 16 49 H 0.25 7.16 8.31 -40.82 -0.34 6.82 16 50 H 0.02 0.43 8.14 -51.93 -0.42 0.01 16 51 H 0.09 2.33 6.06 -51.93 -0.31 2.02 16 52 H 0.05 0.89 8.14 -51.93 -0.42 0.47 16 53 H 0.06 1.12 8.14 -51.93 -0.42 0.70 16 LS Contribution 413.37 15.07 6.23 6.23 Total: -1.00 -36.47 413.37 -10.82 -47.29 By element: Atomic # 1 Polarization: 14.07 SS G_CDS: -9.53 Total: 4.54 kcal Atomic # 6 Polarization: 8.38 SS G_CDS: -1.77 Total: 6.61 kcal Atomic # 7 Polarization: -62.09 SS G_CDS: -0.25 Total: -62.34 kcal Atomic # 8 Polarization: -18.58 SS G_CDS: -0.48 Total: -19.06 kcal Atomic # 14 Polarization: 21.75 SS G_CDS: -5.03 Total: 16.73 kcal Total LS contribution 6.23 Total: 6.23 kcal Total: -36.47 -10.82 -47.29 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. ZINC000362414782.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 -22.685 kcal (2) G-P(sol) polarization free energy of solvation -36.471 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -59.155 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -10.819 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -47.290 kcal (6) G-S(sol) free energy of system = (1) + (5) -69.975 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 3.30 seconds