Wall clock time and date at job start Sat Apr 11 2020 06:47:12 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 O 1.42896 * 1 3 3 C 1.42901 * 114.00111 * 2 1 4 4 C 1.53003 * 109.46968 * 180.02562 * 3 2 1 5 5 H 1.08992 * 109.47023 * 174.99826 * 4 3 2 6 6 F 1.39901 * 109.46736 * 294.99742 * 4 3 2 7 7 C 1.52997 * 109.47398 * 54.99658 * 4 3 2 8 8 N 1.46496 * 109.47419 * 174.96531 * 7 4 3 9 9 C 1.36735 * 127.13733 * 84.73890 * 8 7 4 10 10 C 1.50697 * 126.34800 * 359.97438 * 9 8 7 11 11 C 1.52999 * 109.47356 * 85.85129 * 10 9 8 12 12 C 1.53006 * 109.47184 * 66.39182 * 11 10 9 13 13 C 1.53003 * 109.47158 * 186.38780 * 11 10 9 14 14 N 1.30303 * 107.30612 * 180.02562 * 9 8 7 15 15 N 1.28531 * 110.04855 * 0.02562 * 14 9 8 16 16 C 1.31211 * 109.86412 * 359.97438 * 15 14 9 17 17 N 1.38580 * 126.47320 * 180.02562 * 16 15 14 18 18 C 1.46901 * 110.99967 * 243.27842 * 17 16 15 19 19 C 1.46901 * 111.00254 * 7.23193 * 17 16 15 20 20 H 1.08996 * 109.46720 * 54.99762 * 19 17 16 21 21 C 1.53000 * 109.47042 * 295.00408 * 19 17 16 22 22 C 1.50698 * 109.47377 * 175.00262 * 19 17 16 23 23 H 1.07999 * 119.99688 * 359.97438 * 22 19 17 24 24 C 1.37871 * 119.99892 * 180.02562 * 22 19 17 25 25 N 1.31507 * 120.00442 * 359.97438 * 24 22 19 26 26 Si 1.86802 * 119.99817 * 179.97438 * 24 22 19 27 27 H 1.48501 * 109.47260 * 359.97438 * 26 24 22 28 28 H 1.48504 * 109.47393 * 119.99643 * 26 24 22 29 29 H 1.48503 * 109.47122 * 239.99743 * 26 24 22 30 30 H 1.08996 * 109.47531 * 180.02562 * 1 2 3 31 31 H 1.09008 * 109.47067 * 300.00443 * 1 2 3 32 32 H 1.09005 * 109.46807 * 60.00160 * 1 2 3 33 33 H 1.09001 * 109.47336 * 59.99626 * 3 2 1 34 34 H 1.08996 * 109.46928 * 299.99743 * 3 2 1 35 35 H 1.08997 * 109.47299 * 54.95769 * 7 4 3 36 36 H 1.09002 * 109.46978 * 294.96258 * 7 4 3 37 37 H 1.09004 * 109.47203 * 205.85109 * 10 9 8 38 38 H 1.08999 * 109.47102 * 325.84641 * 10 9 8 39 39 H 1.08995 * 109.47042 * 306.39044 * 11 10 9 40 40 H 1.09004 * 109.47274 * 62.45551 * 12 11 10 41 41 H 1.09000 * 109.47063 * 182.45813 * 12 11 10 42 42 H 1.09000 * 109.46822 * 302.45479 * 12 11 10 43 43 H 1.09000 * 109.46461 * 60.00133 * 13 11 10 44 44 H 1.09000 * 109.47057 * 179.97438 * 13 11 10 45 45 H 1.08995 * 109.47359 * 300.00070 * 13 11 10 46 46 H 1.09004 * 109.47202 * 52.22310 * 18 17 16 47 47 H 1.08997 * 109.47385 * 172.22391 * 18 17 16 48 48 H 1.09004 * 109.47190 * 292.22672 * 18 17 16 49 49 H 1.09002 * 109.47395 * 59.99720 * 21 19 17 50 50 H 1.09003 * 109.47080 * 179.97438 * 21 19 17 51 51 H 1.09004 * 109.47082 * 299.99449 * 21 19 17 52 52 H 0.96999 * 120.00384 * 180.02562 * 25 24 22 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 2.0102 1.3055 0.0000 4 6 3.5355 1.1846 -0.0006 5 1 3.9785 2.1764 -0.0902 6 9 3.9567 0.5919 1.1945 7 6 3.9781 0.3197 -1.1825 8 7 5.4412 0.3023 -1.2541 9 6 6.2915 -0.5200 -0.5682 10 6 5.8980 -1.5914 0.4158 11 6 5.6000 -2.8900 -0.3363 12 6 6.8878 -3.4189 -0.9710 13 6 5.0485 -3.9302 0.6408 14 7 7.5053 -0.2046 -0.9222 15 7 7.4796 0.7539 -1.7781 16 6 6.2381 1.1039 -2.0184 17 7 5.8160 2.0996 -2.8850 18 6 5.1226 3.1712 -2.1578 19 6 6.9425 2.6340 -3.6617 20 1 7.4495 1.8172 -4.1753 21 6 7.9255 3.3325 -2.7200 22 6 6.4290 3.6235 -4.6758 23 1 5.3715 3.8339 -4.7374 24 6 7.3092 4.2592 -5.5256 25 7 8.5968 4.0026 -5.4509 26 14 6.6726 5.4851 -6.7831 27 1 5.1963 5.5946 -6.6644 28 1 7.2892 6.8133 -6.5359 29 1 7.0259 5.0218 -8.1490 30 1 -0.3634 -1.0276 0.0005 31 1 -0.3634 0.5139 0.8900 32 1 -0.3633 0.5138 -0.8901 33 1 1.6886 1.8464 0.8899 34 1 1.6886 1.8463 -0.8900 35 1 3.5739 0.7328 -2.1066 36 1 3.6089 -0.6970 -1.0471 37 1 6.7150 -1.7576 1.1180 38 1 5.0089 -1.2750 0.9611 39 1 4.8631 -2.6973 -1.1160 40 1 7.6093 -3.6528 -0.1882 41 1 6.6673 -4.3202 -1.5430 42 1 7.3041 -2.6605 -1.6341 43 1 4.1311 -3.5534 1.0929 44 1 4.8357 -4.8552 0.1049 45 1 5.7853 -4.1229 1.4205 46 1 5.7488 3.5161 -1.3349 47 1 4.9242 4.0012 -2.8359 48 1 4.1802 2.7915 -1.7628 49 1 8.2969 2.6169 -1.9865 50 1 8.7616 3.7287 -3.2963 51 1 7.4185 4.1493 -2.2063 52 1 9.2160 4.4501 -6.0485 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) 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=-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 ZINC001411858494.mol2 52 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 06:47:12 Heat of formation + Delta-G solvation = -8.690737 kcal Electronic energy + Delta-G solvation = -32644.462063 eV Core-core repulsion = 28402.643913 eV Total energy + Delta-G solvation = -4241.818150 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 342.217 amu Computer time = 0.76 seconds Orbital eigenvalues (eV) -47.93588 -42.45584 -38.33098 -37.46604 -36.32678 -35.17894 -32.79470 -31.56041 -30.20334 -28.75902 -27.56409 -27.10173 -26.84064 -26.00906 -25.18668 -24.92633 -22.33520 -21.67491 -20.77631 -19.80566 -19.44918 -17.62941 -17.08734 -16.70517 -16.24711 -15.89174 -15.69885 -15.60710 -15.42887 -14.94358 -14.85671 -14.50501 -14.31352 -14.04102 -13.87482 -13.68178 -13.11084 -12.79038 -12.69131 -12.52554 -12.37187 -12.26832 -12.07302 -11.92648 -11.69209 -11.59609 -11.49712 -11.16939 -11.13969 -11.06285 -10.95176 -10.79772 -10.74565 -10.69670 -10.39909 -10.18598 -10.15256 -10.07643 -9.71289 -9.64932 -8.87067 -8.83555 -8.41993 -7.37045 -6.04821 -4.12469 2.25214 2.61913 3.20620 3.26402 3.34302 3.36544 3.46450 4.07702 4.20600 4.31336 4.37524 4.54002 4.56961 4.67102 4.80765 4.87581 4.91720 4.93778 5.00921 5.01624 5.23572 5.26454 5.29532 5.33368 5.42624 5.48259 5.58829 5.59885 5.67523 5.80247 5.88050 5.90120 5.92356 6.01433 6.10685 6.22964 6.31118 6.39156 6.44909 6.49354 6.60792 6.83340 7.03893 7.13342 7.27474 7.48820 7.66053 7.73300 7.96684 8.28922 8.44832 8.89452 9.43419 9.52418 11.01399 Molecular weight = 342.22amu Principal moments of inertia in cm(-1) A = 0.011069 B = 0.003754 C = 0.003049 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 2528.939551 B = 7457.074913 C = 9179.645216 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C 0.031 3.969 2 O -0.384 6.384 3 C 0.037 3.963 4 C 0.078 3.922 5 H 0.106 0.894 6 F -0.197 7.197 7 C 0.092 3.908 8 N -0.488 5.488 9 C 0.168 3.832 10 C -0.028 4.028 11 C -0.090 4.090 12 C -0.147 4.147 13 C -0.144 4.144 14 N -0.287 5.287 15 N -0.312 5.312 16 C 0.377 3.623 17 N -0.453 5.453 18 C 0.030 3.970 19 C 0.230 3.770 20 H 0.052 0.948 21 C -0.175 4.175 22 C -0.515 4.515 23 H 0.064 0.936 24 C 0.064 3.936 25 N -0.882 5.882 26 Si 0.899 3.101 27 H -0.273 1.273 28 H -0.284 1.284 29 H -0.284 1.284 30 H 0.089 0.911 31 H 0.042 0.958 32 H 0.045 0.955 33 H 0.069 0.931 34 H 0.075 0.925 35 H 0.116 0.884 36 H 0.110 0.890 37 H 0.092 0.908 38 H 0.088 0.912 39 H 0.065 0.935 40 H 0.056 0.944 41 H 0.049 0.951 42 H 0.063 0.937 43 H 0.055 0.945 44 H 0.055 0.945 45 H 0.056 0.944 46 H 0.031 0.969 47 H 0.100 0.900 48 H 0.043 0.957 49 H 0.045 0.955 50 H 0.089 0.911 51 H 0.019 0.981 52 H 0.262 0.738 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -16.134 -9.363 13.235 22.872 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 -0.065 4.065 2 O -0.303 6.303 3 C -0.041 4.041 4 C 0.041 3.959 5 H 0.124 0.876 6 F -0.178 7.178 7 C -0.032 4.032 8 N -0.186 5.186 9 C -0.100 4.100 10 C -0.068 4.068 11 C -0.110 4.110 12 C -0.204 4.204 13 C -0.201 4.201 14 N -0.126 5.126 15 N -0.155 5.155 16 C 0.022 3.978 17 N -0.177 5.177 18 C -0.118 4.118 19 C 0.125 3.875 20 H 0.070 0.930 21 C -0.234 4.234 22 C -0.554 4.554 23 H 0.082 0.918 24 C -0.139 4.139 25 N -0.520 5.520 26 Si 0.726 3.274 27 H -0.198 1.198 28 H -0.210 1.210 29 H -0.210 1.210 30 H 0.107 0.893 31 H 0.061 0.939 32 H 0.063 0.937 33 H 0.087 0.913 34 H 0.093 0.907 35 H 0.134 0.866 36 H 0.128 0.872 37 H 0.111 0.889 38 H 0.107 0.893 39 H 0.084 0.916 40 H 0.075 0.925 41 H 0.068 0.932 42 H 0.082 0.918 43 H 0.074 0.926 44 H 0.074 0.926 45 H 0.075 0.925 46 H 0.050 0.950 47 H 0.118 0.882 48 H 0.062 0.938 49 H 0.064 0.936 50 H 0.108 0.892 51 H 0.038 0.962 52 H 0.072 0.928 Dipole moment (debyes) X Y Z Total from point charges -14.631 -9.685 12.727 21.676 hybrid contribution -1.472 1.358 -0.260 2.019 sum -16.103 -8.327 12.467 22.002 Atomic orbital electron populations 1.22789 0.80337 1.03154 1.00232 1.87909 1.20293 1.26578 1.95502 1.23125 0.91902 0.86337 1.02696 1.22281 0.93593 0.98233 0.81767 0.87630 1.92825 1.91319 1.85783 1.47844 1.22289 0.77736 1.03520 0.99703 1.46135 1.07204 1.29245 1.35983 1.24460 0.86766 0.98171 1.00569 1.20162 1.03050 0.89476 0.94104 1.21074 0.98169 0.94017 0.97705 1.21845 0.96739 1.00854 1.00983 1.21814 1.00837 0.98408 0.99081 1.73988 1.17833 1.10360 1.10403 1.74866 1.14690 1.11479 1.14498 1.23277 0.86156 0.95910 0.92452 1.59325 1.30662 1.09604 1.18121 1.22518 0.95948 0.95034 0.98267 1.19364 0.83718 0.94780 0.89592 0.92992 1.22467 1.02526 0.98961 0.99422 1.21053 0.93840 1.23431 1.17042 0.91804 1.24890 0.94788 0.96907 0.97272 1.69930 1.01670 1.42506 1.37915 0.86443 0.78870 0.80813 0.81237 1.19794 1.21049 1.20960 0.89283 0.93892 0.93674 0.91271 0.90663 0.86556 0.87182 0.88933 0.89329 0.91629 0.92473 0.93198 0.91807 0.92600 0.92606 0.92451 0.95001 0.88163 0.93807 0.93580 0.89242 0.96205 0.92797 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 0.03 0.19 11.01 101.05 1.11 1.30 16 2 O -0.38 -3.49 9.92 -35.23 -0.35 -3.84 16 3 C 0.04 0.30 5.89 37.16 0.22 0.52 16 4 C 0.08 0.85 3.54 -26.73 -0.09 0.76 16 5 H 0.11 1.18 6.07 -51.93 -0.32 0.86 16 6 F -0.20 -2.51 14.78 2.25 0.03 -2.47 16 7 C 0.09 1.15 4.52 -4.05 -0.02 1.13 16 8 N -0.49 -8.18 2.80 -114.09 -0.32 -8.50 16 9 C 0.17 2.86 6.30 -154.01 -0.97 1.89 16 10 C -0.03 -0.37 4.93 -27.88 -0.14 -0.50 16 11 C -0.09 -1.03 2.90 -90.62 -0.26 -1.29 16 12 C -0.15 -1.84 9.06 37.16 0.34 -1.50 16 13 C -0.14 -1.28 9.19 37.16 0.34 -0.94 16 14 N -0.29 -6.01 11.67 32.99 0.39 -5.63 16 15 N -0.31 -7.25 9.10 30.31 0.28 -6.98 16 16 C 0.38 7.84 6.69 -318.88 -2.13 5.71 16 17 N -0.45 -9.64 4.76 -176.08 -0.84 -10.48 16 18 C 0.03 0.52 8.03 60.07 0.48 1.01 16 19 C 0.23 5.85 2.04 -68.86 -0.14 5.70 16 20 H 0.05 1.53 8.05 -51.93 -0.42 1.11 16 21 C -0.17 -4.44 8.28 37.16 0.31 -4.13 16 22 C -0.51 -13.57 7.77 -34.44 -0.27 -13.84 16 23 H 0.06 1.62 6.84 -52.49 -0.36 1.27 16 24 C 0.06 1.73 5.30 -17.82 -0.09 1.63 16 25 N -0.88 -25.09 11.32 55.43 0.63 -24.46 16 26 Si 0.90 20.68 29.54 -169.99 -5.02 15.66 16 27 H -0.27 -6.11 7.11 56.52 0.40 -5.71 16 28 H -0.28 -6.53 7.11 56.52 0.40 -6.12 16 29 H -0.28 -6.57 7.11 56.52 0.40 -6.17 16 30 H 0.09 0.45 8.14 -51.93 -0.42 0.03 16 31 H 0.04 0.22 8.14 -51.92 -0.42 -0.20 16 32 H 0.04 0.23 8.14 -51.93 -0.42 -0.19 16 33 H 0.07 0.49 8.14 -51.93 -0.42 0.06 16 34 H 0.08 0.50 8.14 -51.93 -0.42 0.07 16 35 H 0.12 1.41 7.66 -51.93 -0.40 1.01 16 36 H 0.11 1.27 7.51 -51.93 -0.39 0.88 16 37 H 0.09 1.16 8.14 -51.93 -0.42 0.74 16 38 H 0.09 1.08 5.90 -51.93 -0.31 0.77 16 39 H 0.07 0.79 7.99 -51.93 -0.42 0.37 16 40 H 0.06 0.67 8.14 -51.93 -0.42 0.24 16 41 H 0.05 0.56 8.14 -51.93 -0.42 0.13 16 42 H 0.06 1.01 6.95 -51.93 -0.36 0.65 16 43 H 0.05 0.47 8.14 -51.93 -0.42 0.04 16 44 H 0.05 0.46 8.14 -51.93 -0.42 0.03 16 45 H 0.06 0.48 8.14 -51.93 -0.42 0.06 16 46 H 0.03 0.58 6.92 -51.93 -0.36 0.22 16 47 H 0.10 1.85 6.25 -51.93 -0.32 1.52 16 48 H 0.04 0.59 4.58 -51.93 -0.24 0.36 16 49 H 0.05 1.17 5.62 -51.93 -0.29 0.88 16 50 H 0.09 2.50 6.07 -51.93 -0.32 2.18 16 51 H 0.02 0.46 6.66 -51.93 -0.35 0.12 16 52 H 0.26 7.08 8.31 -40.82 -0.34 6.75 16 LS Contribution 401.59 15.07 6.05 6.05 Total: -1.00 -32.14 401.59 -9.09 -41.23 By element: Atomic # 1 Polarization: 10.59 SS G_CDS: -8.62 Total: 1.97 kcal Atomic # 6 Polarization: -1.22 SS G_CDS: -1.32 Total: -2.54 kcal Atomic # 7 Polarization: -56.18 SS G_CDS: 0.13 Total: -56.05 kcal Atomic # 8 Polarization: -3.49 SS G_CDS: -0.35 Total: -3.84 kcal Atomic # 9 Polarization: -2.51 SS G_CDS: 0.03 Total: -2.47 kcal Atomic # 14 Polarization: 20.68 SS G_CDS: -5.02 Total: 15.66 kcal Total LS contribution 6.05 Total: 6.05 kcal Total: -32.14 -9.09 -41.23 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. ZINC001411858494.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 32.541 kcal (2) G-P(sol) polarization free energy of solvation -32.138 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system 0.403 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -9.094 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -41.232 kcal (6) G-S(sol) free energy of system = (1) + (5) -8.691 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.76 seconds