Wall clock time and date at job start Sat Apr 11 2020 06:10:23 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 1.52997 * 1 3 3 H 1.09002 * 109.47153 * 2 1 4 4 C 1.50697 * 109.47466 * 239.99773 * 2 1 3 5 5 H 1.07999 * 120.00055 * 240.00165 * 4 2 1 6 6 C 1.37878 * 119.99687 * 60.00188 * 4 2 1 7 7 N 1.31511 * 120.00458 * 359.97438 * 6 4 2 8 8 Si 1.86805 * 119.99926 * 180.02562 * 6 4 2 9 9 H 1.48503 * 109.46980 * 89.99582 * 8 6 4 10 10 H 1.48493 * 109.47135 * 209.99651 * 8 6 4 11 11 H 1.48498 * 109.47274 * 330.00048 * 8 6 4 12 12 N 1.46497 * 109.47188 * 119.99573 * 2 1 3 13 13 C 1.46509 * 119.99920 * 60.00125 * 12 2 1 14 14 C 1.34776 * 120.00710 * 240.00300 * 12 2 1 15 15 O 1.21283 * 119.99682 * 359.97438 * 14 12 2 16 16 C 1.50699 * 120.00475 * 180.02562 * 14 12 2 17 17 H 1.08994 * 109.46908 * 299.99876 * 16 14 12 18 18 C 1.53003 * 109.46965 * 59.99867 * 16 14 12 19 19 C 1.53003 * 109.47230 * 179.97438 * 16 14 12 20 20 C 1.53941 * 113.74133 * 158.74158 * 19 16 14 21 21 N 1.47816 * 86.03653 * 222.08670 * 20 19 16 22 22 C 1.34775 * 134.45694 * 204.64527 * 21 20 19 23 23 O 1.21505 * 120.00156 * 179.86864 * 22 21 20 24 24 O 1.34640 * 119.99730 * 359.86481 * 22 21 20 25 25 C 1.45209 * 116.99691 * 180.02562 * 24 22 21 26 26 C 1.53000 * 109.47248 * 59.99805 * 25 24 22 27 27 C 1.53001 * 109.46785 * 180.02562 * 25 24 22 28 28 C 1.52999 * 109.46597 * 299.99667 * 25 24 22 29 29 C 1.47580 * 91.04878 * 24.54805 * 21 20 19 30 30 H 1.09002 * 109.47153 * 180.02562 * 1 2 3 31 31 H 1.09001 * 109.46832 * 60.00191 * 1 2 3 32 32 H 1.09004 * 109.47261 * 300.00172 * 1 2 3 33 33 H 0.96999 * 120.00480 * 179.97438 * 7 6 4 34 34 H 1.09003 * 109.46975 * 89.99812 * 13 12 2 35 35 H 1.08995 * 109.47277 * 209.99863 * 13 12 2 36 36 H 1.09003 * 109.46743 * 330.00349 * 13 12 2 37 37 H 1.08995 * 109.46890 * 300.00043 * 18 16 14 38 38 H 1.09000 * 109.46884 * 60.00394 * 18 16 14 39 39 H 1.09001 * 109.46855 * 180.02562 * 18 16 14 40 40 H 1.08998 * 112.94515 * 290.33909 * 19 16 14 41 41 H 1.09008 * 113.77211 * 336.34818 * 20 19 16 42 42 H 1.08998 * 113.77472 * 107.74585 * 20 19 16 43 43 H 1.08997 * 109.46902 * 60.00153 * 26 25 24 44 44 H 1.08998 * 109.46855 * 180.02562 * 26 25 24 45 45 H 1.08998 * 109.47081 * 300.00021 * 26 25 24 46 46 H 1.08997 * 109.47237 * 60.00141 * 27 25 24 47 47 H 1.09002 * 109.46613 * 180.02562 * 27 25 24 48 48 H 1.09001 * 109.47109 * 299.99348 * 27 25 24 49 49 H 1.09000 * 109.46995 * 60.00717 * 28 25 24 50 50 H 1.09002 * 109.46677 * 179.97438 * 28 25 24 51 51 H 1.08997 * 109.47781 * 300.00077 * 28 25 24 52 52 H 1.09002 * 113.77025 * 221.14854 * 29 21 20 53 53 H 1.09003 * 113.86934 * 89.77157 * 29 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 1.5300 0.0000 0.0000 3 1 1.8933 1.0277 0.0000 4 6 2.0324 -0.7104 -1.2304 5 1 2.6533 -1.5885 -1.1312 6 6 1.6993 -0.2393 -2.4827 7 7 0.9428 0.8296 -2.6034 8 14 2.3215 -1.1204 -4.0079 9 1 1.3429 -2.1618 -4.4118 10 1 2.4867 -0.1415 -5.1122 11 1 3.6294 -1.7584 -3.7121 12 7 2.0183 -0.6905 1.1962 13 6 1.6644 -2.0932 1.4281 14 6 2.7931 -0.0356 2.0834 15 8 3.0865 1.1255 1.8913 16 6 3.2959 -0.7461 3.3136 17 1 2.4484 -1.0890 3.9070 18 6 4.1462 -1.9478 2.8967 19 6 4.1463 0.2155 4.1462 20 6 4.2804 -0.1961 5.6235 21 7 4.0858 1.2360 5.9337 22 6 4.4263 2.0330 6.9658 23 8 4.1269 3.2105 6.9486 24 8 5.0981 1.5244 8.0159 25 6 5.4312 2.4410 9.0918 26 6 4.1461 3.0332 9.6736 27 6 6.1880 1.6876 10.1875 28 6 6.3113 3.5679 8.5474 29 6 3.3715 1.4429 4.6589 30 1 -0.3633 -1.0277 0.0005 31 1 -0.3633 0.5138 -0.8900 32 1 -0.3634 0.5139 0.8900 33 1 0.7089 1.1612 -3.4844 34 1 2.4157 -2.7377 0.9718 35 1 1.6238 -2.2851 2.5002 36 1 0.6904 -2.3002 0.9847 37 1 3.5407 -2.6329 2.3034 38 1 4.9938 -1.6048 2.3033 39 1 4.5095 -2.4620 3.7865 40 1 5.0958 0.4628 3.6716 41 1 3.4715 -0.8359 5.9765 42 1 5.2685 -0.5735 5.8866 43 1 3.5192 2.2302 10.0614 44 1 4.3962 3.7215 10.4809 45 1 3.6074 3.5700 8.8928 46 1 7.1036 1.2661 9.7727 47 1 6.4377 2.3755 10.9953 48 1 5.5614 0.8844 10.5754 49 1 5.7725 4.1047 7.7666 50 1 6.5610 4.2562 9.3549 51 1 7.2269 3.1461 8.1329 52 1 3.6353 2.3718 4.1532 53 1 2.2949 1.2863 4.7261 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 ZINC000495488700.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 06:10:23 Heat of formation + Delta-G solvation = -78.178849 kcal Electronic energy + Delta-G solvation = -31011.322851 eV Core-core repulsion = 26884.970503 eV Total energy + Delta-G solvation = -4126.352348 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.220 amu Computer time = 0.72 seconds Orbital eigenvalues (eV) -40.97659 -39.99699 -38.58396 -36.60441 -35.34478 -34.24521 -33.72553 -32.45033 -29.56852 -28.50959 -27.65427 -27.58343 -26.39871 -26.30026 -25.24659 -24.31246 -22.54838 -21.21256 -20.05699 -19.31242 -18.41867 -17.73862 -16.88272 -16.65495 -16.40492 -16.11693 -15.60489 -15.15447 -14.92319 -14.73158 -14.47291 -14.31315 -13.96307 -13.71617 -13.35799 -13.03415 -12.76365 -12.65863 -12.58278 -12.51796 -12.37616 -12.18801 -12.11152 -12.07423 -11.95900 -11.66582 -11.60059 -11.51885 -11.36131 -11.17460 -11.09174 -10.96207 -10.78586 -10.69833 -10.58848 -10.51859 -10.27076 -10.16664 -10.01967 -9.17392 -8.87933 -8.80681 -8.43581 -7.60135 -6.08152 -4.16189 1.92766 2.82991 3.25014 3.31414 3.33560 3.37656 3.62642 3.83216 4.34604 4.43498 4.49359 4.52962 4.67472 4.74338 4.83196 5.03626 5.13102 5.21041 5.21631 5.24295 5.29442 5.33863 5.37507 5.42543 5.44041 5.47936 5.51943 5.63614 5.70637 5.71722 5.78963 5.81164 5.88580 5.93184 6.01270 6.08284 6.13607 6.14221 6.27137 6.37753 6.40645 6.75006 6.80644 7.04378 7.41360 7.51346 7.63709 7.70628 8.00402 8.18847 8.29850 8.51985 8.82279 9.03653 9.50468 10.97026 Molecular weight = 340.22amu Principal moments of inertia in cm(-1) A = 0.025273 B = 0.002155 C = 0.002108 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1107.649310 B =12988.075712 C =13280.351922 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.147 4.147 2 C 0.258 3.742 3 H 0.064 0.936 4 C -0.524 4.524 5 H 0.058 0.942 6 C 0.064 3.936 7 N -0.887 5.887 8 Si 0.898 3.102 9 H -0.280 1.280 10 H -0.286 1.286 11 H -0.275 1.275 12 N -0.591 5.591 13 C 0.085 3.915 14 C 0.506 3.494 15 O -0.549 6.549 16 C -0.102 4.102 17 H 0.095 0.905 18 C -0.154 4.154 19 C -0.095 4.095 20 C 0.111 3.889 21 N -0.635 5.635 22 C 0.671 3.329 23 O -0.569 6.569 24 O -0.364 6.364 25 C 0.135 3.865 26 C -0.183 4.183 27 C -0.139 4.139 28 C -0.184 4.184 29 C 0.149 3.851 30 H 0.029 0.971 31 H 0.093 0.907 32 H 0.011 0.989 33 H 0.263 0.737 34 H 0.052 0.948 35 H 0.054 0.946 36 H 0.071 0.929 37 H 0.076 0.924 38 H 0.061 0.939 39 H 0.061 0.939 40 H 0.109 0.891 41 H 0.087 0.913 42 H 0.084 0.916 43 H 0.058 0.942 44 H 0.069 0.931 45 H 0.088 0.912 46 H 0.066 0.934 47 H 0.079 0.921 48 H 0.065 0.935 49 H 0.088 0.912 50 H 0.069 0.931 51 H 0.059 0.941 52 H 0.094 0.906 53 H 0.085 0.915 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges 7.039 -4.871 22.444 24.021 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 -0.206 4.206 2 C 0.157 3.843 3 H 0.082 0.918 4 C -0.563 4.563 5 H 0.077 0.923 6 C -0.139 4.139 7 N -0.526 5.526 8 Si 0.726 3.274 9 H -0.207 1.207 10 H -0.211 1.211 11 H -0.200 1.200 12 N -0.322 5.322 13 C -0.059 4.059 14 C 0.293 3.707 15 O -0.428 6.428 16 C -0.125 4.125 17 H 0.113 0.887 18 C -0.211 4.211 19 C -0.115 4.115 20 C -0.011 4.011 21 N -0.377 5.377 22 C 0.427 3.573 23 O -0.459 6.459 24 O -0.279 6.279 25 C 0.098 3.902 26 C -0.240 4.240 27 C -0.196 4.196 28 C -0.241 4.241 29 C 0.029 3.971 30 H 0.048 0.952 31 H 0.112 0.888 32 H 0.030 0.970 33 H 0.073 0.927 34 H 0.070 0.930 35 H 0.073 0.927 36 H 0.089 0.911 37 H 0.095 0.905 38 H 0.081 0.919 39 H 0.080 0.920 40 H 0.127 0.873 41 H 0.105 0.895 42 H 0.103 0.897 43 H 0.077 0.923 44 H 0.088 0.912 45 H 0.106 0.894 46 H 0.085 0.915 47 H 0.098 0.902 48 H 0.084 0.916 49 H 0.107 0.893 50 H 0.088 0.912 51 H 0.078 0.922 52 H 0.112 0.888 53 H 0.103 0.897 Dipole moment (debyes) X Y Z Total from point charges 7.086 -3.608 22.416 23.784 hybrid contribution 0.194 -0.560 -0.823 1.015 sum 7.280 -4.168 21.592 23.165 Atomic orbital electron populations 1.22100 0.98324 0.99300 1.00858 1.18935 0.90777 0.94549 0.79993 0.91848 1.21300 1.31769 1.12919 0.90278 0.92330 1.24899 0.95004 0.94976 0.98983 1.69873 1.36370 1.22580 1.23750 0.86505 0.79152 0.79293 0.82485 1.20659 1.21141 1.19968 1.48203 1.48868 1.11537 1.23568 1.21708 1.01424 0.83477 0.99304 1.20267 0.79142 0.87019 0.84294 1.90658 1.58270 1.17057 1.76820 1.21308 0.98924 0.96416 0.95806 0.88739 1.21998 1.00461 0.96741 1.01939 1.22910 1.00496 0.94815 0.93251 1.23394 1.02414 0.82488 0.92830 1.48915 1.59139 1.10980 1.18712 1.17545 0.77334 0.83435 0.78958 1.90896 1.59856 1.15040 1.80062 1.86303 1.70135 1.43115 1.28377 1.22051 0.95310 0.88649 0.84206 1.22509 0.97254 1.01730 1.02521 1.21846 1.00380 1.00891 0.96516 1.22519 0.99914 0.98438 1.03209 1.23203 0.96513 1.00411 0.76960 0.95152 0.88830 0.97000 0.92691 0.92952 0.92743 0.91061 0.90497 0.91939 0.92011 0.87293 0.89485 0.89717 0.92273 0.91218 0.89359 0.91511 0.90217 0.91562 0.89303 0.91247 0.92196 0.88760 0.89687 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 -0.15 -3.42 8.95 37.16 0.33 -3.09 16 2 C 0.26 6.34 2.64 -69.09 -0.18 6.15 16 3 H 0.06 1.83 6.90 -51.93 -0.36 1.47 16 4 C -0.52 -13.76 8.37 -34.44 -0.29 -14.04 16 5 H 0.06 1.51 7.65 -52.49 -0.40 1.11 16 6 C 0.06 1.71 5.30 -17.82 -0.09 1.62 16 7 N -0.89 -24.81 11.32 55.43 0.63 -24.19 16 8 Si 0.90 20.74 29.54 -169.99 -5.02 15.72 16 9 H -0.28 -6.35 7.11 56.52 0.40 -5.95 16 10 H -0.29 -6.64 7.11 56.52 0.40 -6.24 16 11 H -0.27 -6.30 7.11 56.52 0.40 -5.90 16 12 N -0.59 -11.66 2.75 -175.26 -0.48 -12.14 16 13 C 0.08 1.28 8.04 59.85 0.48 1.76 16 14 C 0.51 9.39 6.89 -10.99 -0.08 9.31 16 15 O -0.55 -12.35 14.37 5.56 0.08 -12.27 16 16 C -0.10 -1.28 1.66 -91.77 -0.15 -1.43 16 17 H 0.09 0.98 7.24 -51.93 -0.38 0.61 16 18 C -0.15 -1.64 8.81 37.16 0.33 -1.32 16 19 C -0.10 -1.15 2.85 -89.70 -0.26 -1.41 16 20 C 0.11 1.10 8.43 -2.84 -0.02 1.08 16 21 N -0.63 -8.54 3.61 -183.98 -0.66 -9.20 16 22 C 0.67 9.98 8.22 54.05 0.44 10.43 16 23 O -0.57 -9.77 12.61 -19.28 -0.24 -10.01 16 24 O -0.36 -4.68 9.87 -40.32 -0.40 -5.07 16 25 C 0.13 1.39 1.13 -90.62 -0.10 1.29 16 26 C -0.18 -1.84 8.37 37.16 0.31 -1.53 16 27 C -0.14 -1.00 8.85 37.16 0.33 -0.67 16 28 C -0.18 -1.89 8.37 37.16 0.31 -1.58 16 29 C 0.15 2.10 7.05 -2.97 -0.02 2.08 16 30 H 0.03 0.64 6.66 -51.93 -0.35 0.30 16 31 H 0.09 2.41 6.07 -51.93 -0.32 2.10 16 32 H 0.01 0.24 8.14 -51.93 -0.42 -0.18 16 33 H 0.26 7.02 8.31 -40.82 -0.34 6.68 16 34 H 0.05 0.76 6.95 -51.93 -0.36 0.40 16 35 H 0.05 0.62 6.01 -51.93 -0.31 0.31 16 36 H 0.07 1.12 6.43 -51.93 -0.33 0.79 16 37 H 0.08 0.83 4.53 -51.93 -0.24 0.59 16 38 H 0.06 0.75 8.14 -51.93 -0.42 0.33 16 39 H 0.06 0.48 8.14 -51.93 -0.42 0.06 16 40 H 0.11 1.41 8.14 -51.93 -0.42 0.99 16 41 H 0.09 0.70 7.99 -51.92 -0.41 0.29 16 42 H 0.08 0.73 8.14 -51.93 -0.42 0.30 16 43 H 0.06 0.56 8.14 -51.93 -0.42 0.14 16 44 H 0.07 0.55 8.14 -51.93 -0.42 0.13 16 45 H 0.09 1.14 5.88 -51.93 -0.31 0.83 16 46 H 0.07 0.46 8.14 -51.93 -0.42 0.04 16 47 H 0.08 0.42 8.14 -51.93 -0.42 0.00 16 48 H 0.07 0.45 8.14 -51.93 -0.42 0.03 16 49 H 0.09 1.17 5.88 -51.93 -0.31 0.86 16 50 H 0.07 0.56 8.14 -51.93 -0.42 0.14 16 51 H 0.06 0.59 8.14 -51.93 -0.42 0.17 16 52 H 0.09 1.54 8.09 -51.93 -0.42 1.12 16 53 H 0.09 1.15 8.10 -51.93 -0.42 0.73 16 LS Contribution 409.72 15.07 6.17 6.17 Total: -1.00 -32.40 409.72 -7.70 -40.10 By element: Atomic # 1 Polarization: 11.35 SS G_CDS: -9.11 Total: 2.24 kcal Atomic # 6 Polarization: 7.31 SS G_CDS: 1.34 Total: 8.65 kcal Atomic # 7 Polarization: -45.01 SS G_CDS: -0.52 Total: -45.53 kcal Atomic # 8 Polarization: -26.80 SS G_CDS: -0.56 Total: -27.36 kcal Atomic # 14 Polarization: 20.74 SS G_CDS: -5.02 Total: 15.72 kcal Total LS contribution 6.17 Total: 6.17 kcal Total: -32.40 -7.70 -40.10 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. ZINC000495488700.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 -38.078 kcal (2) G-P(sol) polarization free energy of solvation -32.403 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -70.480 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -7.699 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -40.101 kcal (6) G-S(sol) free energy of system = (1) + (5) -78.179 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.72 seconds