Wall clock time and date at job start Tue Mar 31 2020 12:16:12 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 1.52999 * 109.46623 * 2 1 4 4 C 1.52992 * 109.47223 * 240.00442 * 2 1 3 5 5 C 1.50698 * 109.47592 * 59.99575 * 4 2 1 6 6 H 1.08003 * 120.00057 * 0.02562 * 5 4 2 7 7 C 1.37876 * 120.00356 * 179.97438 * 5 4 2 8 8 N 1.31519 * 119.99989 * 0.02562 * 7 5 4 9 9 Si 1.86801 * 120.00117 * 179.97438 * 7 5 4 10 10 H 1.48498 * 109.46744 * 90.00434 * 9 7 5 11 11 H 1.48500 * 109.47304 * 210.00023 * 9 7 5 12 12 H 1.48498 * 109.47341 * 330.00626 * 9 7 5 13 13 C 1.52997 * 109.47127 * 119.99936 * 2 1 3 14 14 N 1.46505 * 109.47212 * 300.00138 * 13 2 1 15 15 C 1.34771 * 119.99622 * 179.97438 * 14 13 2 16 16 O 1.21280 * 120.00597 * 0.02562 * 15 14 13 17 17 C 1.50701 * 119.99622 * 179.97438 * 15 14 13 18 18 C 1.53006 * 109.47180 * 60.00237 * 17 15 14 19 19 C 1.52992 * 109.47223 * 179.97438 * 18 17 15 20 20 C 1.53002 * 109.47106 * 60.00126 * 19 18 17 21 21 C 1.52996 * 109.47346 * 300.00019 * 20 19 18 22 22 C 1.53002 * 109.46891 * 300.00003 * 21 20 19 23 23 C 1.52989 * 109.47566 * 59.99870 * 22 21 20 24 24 C 1.52997 * 109.47482 * 300.00288 * 19 18 17 25 25 C 1.52997 * 109.47212 * 180.02562 * 17 15 14 26 26 C 1.53000 * 109.47328 * 59.99600 * 21 20 19 27 27 H 1.08993 * 109.46955 * 300.00075 * 1 2 3 28 28 H 1.09000 * 109.47050 * 59.99904 * 1 2 3 29 29 H 1.09001 * 109.47002 * 179.97438 * 1 2 3 30 30 H 1.09002 * 109.46716 * 179.97438 * 3 2 1 31 31 H 1.09000 * 109.47486 * 299.99829 * 3 2 1 32 32 H 1.09001 * 109.47362 * 60.00551 * 3 2 1 33 33 H 1.09002 * 109.47103 * 179.97438 * 4 2 1 34 34 H 1.09001 * 109.47066 * 299.99881 * 4 2 1 35 35 H 0.96996 * 119.99885 * 179.97438 * 8 7 5 36 36 H 1.09002 * 109.47153 * 180.02562 * 13 2 1 37 37 H 1.09001 * 109.46832 * 60.00321 * 13 2 1 38 38 H 0.96996 * 119.99606 * 0.02562 * 14 13 2 39 39 H 1.08996 * 109.47129 * 300.00474 * 18 17 15 40 40 H 1.08998 * 109.46505 * 60.00277 * 18 17 15 41 41 H 1.09002 * 109.47556 * 180.02562 * 19 18 17 42 42 H 1.08996 * 109.47407 * 179.97438 * 20 19 18 43 43 H 1.09000 * 109.46986 * 59.99764 * 20 19 18 44 44 H 1.09001 * 109.47372 * 179.97438 * 21 20 19 45 45 H 1.09001 * 109.47248 * 299.99310 * 22 21 20 46 46 H 1.09002 * 109.46838 * 180.02562 * 22 21 20 47 47 H 1.09000 * 109.47424 * 180.02562 * 23 22 21 48 48 H 1.09001 * 109.47289 * 299.99700 * 24 19 18 49 49 H 1.09004 * 109.47261 * 179.97438 * 24 19 18 50 50 H 1.09001 * 109.47289 * 299.99918 * 25 17 15 51 51 H 1.09002 * 109.47153 * 60.00002 * 25 17 15 52 52 H 1.08992 * 109.47399 * 180.02562 * 26 21 20 53 53 H 1.09004 * 109.46724 * 59.99817 * 26 21 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 1.5301 0.0000 0.0000 3 6 2.0399 1.4425 0.0000 4 6 2.0401 -0.7211 -1.2492 5 6 1.5377 -0.0108 -2.4797 6 1 0.9171 0.8676 -2.3806 7 6 1.8713 -0.4814 -3.7320 8 7 2.6275 -1.5507 -3.8527 9 14 1.2479 0.3987 -5.2572 10 1 2.2253 1.4411 -5.6612 11 1 1.0838 -0.5805 -6.3615 12 1 -0.0607 1.0352 -4.9614 13 6 2.0401 -0.7212 1.2492 14 7 1.5517 -0.0306 2.4454 15 6 1.8769 -0.4914 3.6695 16 8 2.5742 -1.4775 3.7808 17 6 1.3750 0.2193 4.8999 18 6 -0.1550 0.2204 4.8999 19 6 -0.6646 0.9414 6.1494 20 6 -0.1535 2.3835 6.1501 21 6 1.3764 2.3825 6.1501 22 6 1.8859 1.6603 7.3991 23 6 1.3749 0.2183 7.3985 24 6 -0.1551 0.2193 7.3983 25 6 1.8849 -0.5020 6.1492 26 6 1.8860 1.6615 4.9006 27 1 -0.3633 0.5138 0.8899 28 1 -0.3633 0.5138 -0.8900 29 1 -0.3633 -1.0277 -0.0005 30 1 3.1300 1.4425 0.0005 31 1 1.6766 1.9564 -0.8900 32 1 1.6767 1.9563 0.8900 33 1 3.1301 -0.7207 -1.2494 34 1 1.6767 -1.7488 -1.2493 35 1 2.8618 -1.8820 -4.7337 36 1 3.1301 -0.7208 1.2495 37 1 1.6767 -1.7489 1.2492 38 1 0.9937 0.7578 2.3564 39 1 -0.5180 0.7344 4.0099 40 1 -0.5190 -0.8070 4.8999 41 1 -1.7546 0.9418 6.1496 42 1 -0.5169 2.8974 7.0400 43 1 -0.5165 2.8980 5.2603 44 1 1.7405 3.4099 6.1502 45 1 1.5229 2.1740 8.2893 46 1 2.9759 1.6600 7.3993 47 1 1.7375 -0.2961 8.2885 48 1 -0.5192 -0.8081 7.3979 49 1 -0.5178 0.7332 8.2886 50 1 1.5212 -1.5295 6.1494 51 1 2.9749 -0.5024 6.1490 52 1 2.9760 1.6603 4.9009 53 1 1.5230 2.1759 4.0109 RHF calculation, no. of doubly occupied orbitals= 62 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 ZINC000570958058.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 31 2020 12:16:12 Heat of formation + Delta-G solvation = -92.007498 kcal Electronic energy + Delta-G solvation = -28825.846524 eV Core-core repulsion = 25273.458675 eV Total energy + Delta-G solvation = -3552.387849 eV No. of doubly occupied orbitals = 62 Molecular weight (most abundant/longest-lived isotopes) = 319.225 amu Computer time = 0.74 seconds Orbital eigenvalues (eV) -41.90945 -39.12834 -37.05219 -33.81718 -32.88719 -32.87877 -32.73671 -31.86838 -27.15416 -26.52050 -26.39922 -26.17882 -25.91240 -23.49536 -22.24127 -21.70154 -21.55689 -19.81947 -18.35245 -17.74851 -16.59594 -16.30031 -15.52772 -15.05811 -14.78439 -14.64354 -14.63684 -14.51183 -14.27856 -13.83593 -13.55214 -13.48925 -13.18660 -13.03404 -12.98724 -12.77777 -12.62527 -12.55873 -12.06214 -12.06185 -11.19531 -11.14335 -11.13501 -11.08433 -11.07326 -11.02390 -11.01073 -10.85910 -10.64135 -10.58576 -10.40208 -10.25711 -9.89085 -9.87964 -9.87589 -9.47007 -9.08982 -8.91204 -8.66643 -8.36142 -6.00136 -4.01491 2.86877 3.30457 3.37452 3.38910 3.47017 4.22857 4.29002 4.30776 4.45039 4.77720 4.86253 4.93729 4.95712 4.98692 5.02436 5.07266 5.12523 5.13759 5.35342 5.37970 5.45120 5.49962 5.52051 5.54712 5.63280 5.68431 5.76385 5.76968 5.79496 5.80720 5.82840 5.89842 5.91233 6.02979 6.13132 6.17069 6.22402 6.23114 6.28232 6.29112 6.32199 6.39918 6.59126 6.62494 6.79268 7.06171 7.07057 7.13200 7.63955 7.76453 7.80789 7.98650 8.40100 8.50079 9.03356 9.61645 11.11347 Molecular weight = 319.23amu Principal moments of inertia in cm(-1) A = 0.027909 B = 0.002800 C = 0.002715 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1003.002984 B = 9996.844048 C =10312.218849 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.126 4.126 2 C -0.072 4.072 3 C -0.126 4.126 4 C 0.036 3.964 5 C -0.511 4.511 6 H 0.059 0.941 7 C 0.056 3.944 8 N -0.895 5.895 9 Si 0.889 3.111 10 H -0.282 1.282 11 H -0.287 1.287 12 H -0.274 1.274 13 C 0.127 3.873 14 N -0.719 5.719 15 C 0.516 3.484 16 O -0.546 6.546 17 C -0.070 4.070 18 C -0.101 4.101 19 C -0.084 4.084 20 C -0.109 4.109 21 C -0.084 4.084 22 C -0.109 4.109 23 C -0.087 4.087 24 C -0.109 4.109 25 C -0.086 4.086 26 C -0.101 4.101 27 H 0.028 0.972 28 H 0.066 0.934 29 H 0.047 0.953 30 H 0.047 0.953 31 H 0.066 0.934 32 H 0.028 0.972 33 H 0.018 0.982 34 H 0.018 0.982 35 H 0.260 0.740 36 H 0.062 0.938 37 H 0.062 0.938 38 H 0.397 0.603 39 H 0.067 0.933 40 H 0.068 0.932 41 H 0.072 0.928 42 H 0.062 0.938 43 H 0.064 0.936 44 H 0.072 0.928 45 H 0.061 0.939 46 H 0.062 0.938 47 H 0.071 0.929 48 H 0.062 0.938 49 H 0.061 0.939 50 H 0.068 0.932 51 H 0.068 0.932 52 H 0.068 0.932 53 H 0.067 0.933 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -5.890 8.319 23.712 25.810 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 -0.184 4.184 2 C -0.073 4.073 3 C -0.184 4.184 4 C -0.001 4.001 5 C -0.549 4.549 6 H 0.077 0.923 7 C -0.145 4.145 8 N -0.534 5.534 9 Si 0.717 3.283 10 H -0.208 1.208 11 H -0.213 1.213 12 H -0.199 1.199 13 C 0.005 3.995 14 N -0.370 5.370 15 C 0.301 3.699 16 O -0.423 6.423 17 C -0.073 4.073 18 C -0.139 4.139 19 C -0.102 4.102 20 C -0.146 4.146 21 C -0.102 4.102 22 C -0.146 4.146 23 C -0.105 4.105 24 C -0.146 4.146 25 C -0.124 4.124 26 C -0.139 4.139 27 H 0.047 0.953 28 H 0.085 0.915 29 H 0.066 0.934 30 H 0.066 0.934 31 H 0.085 0.915 32 H 0.047 0.953 33 H 0.036 0.964 34 H 0.036 0.964 35 H 0.070 0.930 36 H 0.081 0.919 37 H 0.081 0.919 38 H 0.232 0.768 39 H 0.086 0.914 40 H 0.086 0.914 41 H 0.091 0.909 42 H 0.081 0.919 43 H 0.082 0.918 44 H 0.091 0.909 45 H 0.080 0.920 46 H 0.081 0.919 47 H 0.090 0.910 48 H 0.081 0.919 49 H 0.080 0.920 50 H 0.087 0.913 51 H 0.087 0.913 52 H 0.086 0.914 53 H 0.086 0.914 Dipole moment (debyes) X Y Z Total from point charges -5.303 7.480 23.630 25.346 hybrid contribution -0.496 0.719 -1.130 1.429 sum -5.798 8.199 22.499 24.639 Atomic orbital electron populations 1.21754 0.95313 1.01131 1.00158 1.20897 0.95433 0.95827 0.95113 1.21754 1.00523 0.95921 1.00154 1.19083 0.96329 0.95214 0.89491 1.21184 1.31170 1.12040 0.90529 0.92272 1.25016 0.95333 0.95072 0.99082 1.69967 1.36989 1.23008 1.23431 0.86652 0.79183 0.79414 0.83082 1.20779 1.21336 1.19943 1.21616 0.98844 0.96004 0.83079 1.46221 1.53094 1.31866 1.05869 1.20516 0.80272 0.84489 0.84623 1.90678 1.38197 1.26542 1.86906 1.20702 0.96654 0.96174 0.93771 1.21548 0.92812 1.01249 0.98249 1.21035 0.99547 0.94976 0.94668 1.21562 0.95096 0.96124 1.01862 1.21036 0.95577 0.98942 0.94668 1.21555 1.00366 0.95314 0.97371 1.21086 0.95471 0.95970 0.97999 1.21559 0.95258 1.00415 0.97375 1.21312 1.00916 0.98637 0.91543 1.21551 1.00906 0.93150 0.98252 0.95323 0.91453 0.93386 0.93388 0.91458 0.95324 0.96382 0.96369 0.93041 0.91934 0.91932 0.76772 0.91424 0.91367 0.90927 0.91910 0.91770 0.90926 0.92011 0.91908 0.91037 0.91903 0.92003 0.91314 0.91297 0.91363 0.91428 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 12. 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 -0.13 -2.21 8.05 37.16 0.30 -1.91 16 2 C -0.07 -1.37 0.54 -154.51 -0.08 -1.45 16 3 C -0.13 -2.21 8.05 37.16 0.30 -1.91 16 4 C 0.04 0.89 4.04 -27.89 -0.11 0.78 16 5 C -0.51 -13.55 7.65 -34.44 -0.26 -13.81 16 6 H 0.06 1.51 5.68 -52.48 -0.30 1.21 16 7 C 0.06 1.56 5.46 -17.82 -0.10 1.46 16 8 N -0.89 -26.47 13.29 55.43 0.74 -25.74 16 9 Si 0.89 21.18 29.54 -169.99 -5.02 16.16 16 10 H -0.28 -6.66 7.11 56.52 0.40 -6.26 16 11 H -0.29 -6.88 7.11 56.52 0.40 -6.47 16 12 H -0.27 -6.37 7.11 56.52 0.40 -5.97 16 13 C 0.13 2.28 4.56 -4.04 -0.02 2.26 16 14 N -0.72 -10.53 4.74 -60.29 -0.29 -10.81 16 15 C 0.52 7.77 6.48 -10.99 -0.07 7.70 16 16 O -0.55 -10.44 15.98 5.56 0.09 -10.36 16 17 C -0.07 -0.78 0.61 -155.66 -0.10 -0.87 16 18 C -0.10 -0.97 4.37 -26.73 -0.12 -1.09 16 19 C -0.08 -0.66 3.19 -90.62 -0.29 -0.95 16 20 C -0.11 -0.79 5.19 -26.73 -0.14 -0.93 16 21 C -0.08 -0.66 3.19 -90.62 -0.29 -0.95 16 22 C -0.11 -0.83 5.19 -26.74 -0.14 -0.97 16 23 C -0.09 -0.73 3.19 -90.64 -0.29 -1.02 16 24 C -0.11 -0.83 5.19 -26.73 -0.14 -0.97 16 25 C -0.09 -0.95 3.76 -26.75 -0.10 -1.05 16 26 C -0.10 -0.97 4.37 -26.73 -0.12 -1.09 16 27 H 0.03 0.41 6.86 -51.93 -0.36 0.05 16 28 H 0.07 1.27 6.62 -51.93 -0.34 0.93 16 29 H 0.05 0.86 8.14 -51.93 -0.42 0.44 16 30 H 0.05 0.86 8.14 -51.93 -0.42 0.44 16 31 H 0.07 1.26 6.62 -51.93 -0.34 0.92 16 32 H 0.03 0.40 6.86 -51.93 -0.36 0.05 16 33 H 0.02 0.48 8.14 -51.93 -0.42 0.06 16 34 H 0.02 0.48 8.14 -51.93 -0.42 0.06 16 35 H 0.26 7.31 8.31 -40.82 -0.34 6.97 16 36 H 0.06 1.20 8.14 -51.93 -0.42 0.78 16 37 H 0.06 1.20 8.14 -51.93 -0.42 0.78 16 38 H 0.40 5.00 5.00 -40.82 -0.20 4.79 16 39 H 0.07 0.63 7.56 -51.93 -0.39 0.24 16 40 H 0.07 0.71 8.14 -51.93 -0.42 0.29 16 41 H 0.07 0.52 8.14 -51.93 -0.42 0.10 16 42 H 0.06 0.41 8.14 -51.93 -0.42 -0.02 16 43 H 0.06 0.46 8.14 -51.93 -0.42 0.04 16 44 H 0.07 0.52 8.14 -51.93 -0.42 0.10 16 45 H 0.06 0.41 8.14 -51.93 -0.42 -0.01 16 46 H 0.06 0.49 8.14 -51.93 -0.42 0.07 16 47 H 0.07 0.56 8.14 -51.93 -0.42 0.14 16 48 H 0.06 0.49 8.14 -51.93 -0.42 0.07 16 49 H 0.06 0.42 8.14 -51.93 -0.42 -0.01 16 50 H 0.07 0.83 8.10 -51.93 -0.42 0.41 16 51 H 0.07 0.84 8.10 -51.93 -0.42 0.42 16 52 H 0.07 0.71 8.14 -51.93 -0.42 0.29 16 53 H 0.07 0.63 7.57 -51.93 -0.39 0.23 16 LS Contribution 383.66 15.07 5.78 5.78 Total: -1.00 -30.29 383.66 -10.31 -40.60 By element: Atomic # 1 Polarization: 10.98 SS G_CDS: -9.85 Total: 1.13 kcal Atomic # 6 Polarization: -15.01 SS G_CDS: -1.76 Total: -16.77 kcal Atomic # 7 Polarization: -37.00 SS G_CDS: 0.45 Total: -36.55 kcal Atomic # 8 Polarization: -10.44 SS G_CDS: 0.09 Total: -10.36 kcal Atomic # 14 Polarization: 21.18 SS G_CDS: -5.02 Total: 16.16 kcal Total LS contribution 5.78 Total: 5.78 kcal Total: -30.29 -10.31 -40.60 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. ZINC000570958058.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 -51.403 kcal (2) G-P(sol) polarization free energy of solvation -30.291 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -81.693 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -10.314 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -40.605 kcal (6) G-S(sol) free energy of system = (1) + (5) -92.007 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.74 seconds