Wall clock time and date at job start Sat Apr 11 2020 04:52:43 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 1.42908 * 1 3 3 C 1.42900 * 113.99466 * 2 1 4 4 C 1.53003 * 109.47141 * 180.02562 * 3 2 1 5 5 N 1.46493 * 109.47327 * 177.24328 * 4 3 2 6 6 C 1.36737 * 127.13990 * 90.79856 * 5 4 3 7 7 C 1.50699 * 126.34400 * 359.94750 * 6 5 4 8 8 C 1.52996 * 109.47367 * 89.99928 * 7 6 5 9 9 C 1.52997 * 109.47190 * 179.97438 * 8 7 6 10 10 C 1.50696 * 109.47316 * 179.97438 * 9 8 7 11 11 H 1.07998 * 120.00189 * 359.97438 * 10 9 8 12 12 C 1.37878 * 120.00265 * 180.02562 * 10 9 8 13 13 N 1.31514 * 120.00356 * 180.02562 * 12 10 9 14 14 Si 1.86801 * 119.99766 * 0.02562 * 12 10 9 15 15 H 1.48505 * 109.47223 * 90.00181 * 14 12 10 16 16 H 1.48504 * 109.47014 * 210.00054 * 14 12 10 17 17 H 1.48502 * 109.47273 * 330.00020 * 14 12 10 18 18 N 1.30299 * 107.30531 * 179.97438 * 6 5 4 19 19 N 1.28521 * 110.05314 * 0.02562 * 18 6 5 20 20 C 1.31224 * 109.86418 * 359.73949 * 19 18 6 21 21 N 1.38582 * 126.47429 * 180.26130 * 20 19 18 22 22 C 1.47441 * 110.99995 * 298.07172 * 21 20 19 23 23 C 1.54318 * 107.22963 * 123.25825 * 22 21 20 24 24 C 1.55142 * 103.02084 * 22.28552 * 23 22 21 25 25 H 1.08998 * 110.99021 * 82.43838 * 24 23 22 26 26 C 1.53001 * 110.98867 * 206.25278 * 24 23 22 27 27 C 1.47848 * 111.00010 * 58.91791 * 21 20 19 28 28 H 1.08995 * 110.37194 * 332.46441 * 27 21 20 29 29 C 1.52996 * 110.37194 * 94.80395 * 27 21 20 30 30 H 1.08996 * 109.47040 * 300.00049 * 1 2 3 31 31 H 1.08999 * 109.47300 * 60.00452 * 1 2 3 32 32 H 1.09007 * 109.46594 * 180.02562 * 1 2 3 33 33 H 1.09000 * 109.46998 * 299.99779 * 3 2 1 34 34 H 1.08997 * 109.47555 * 60.00148 * 3 2 1 35 35 H 1.09008 * 109.46657 * 297.24258 * 4 3 2 36 36 H 1.08998 * 109.46792 * 57.23720 * 4 3 2 37 37 H 1.09004 * 109.46500 * 209.99978 * 7 6 5 38 38 H 1.08998 * 109.47109 * 329.99005 * 7 6 5 39 39 H 1.09004 * 109.46923 * 299.99206 * 8 7 6 40 40 H 1.08998 * 109.47760 * 59.99476 * 8 7 6 41 41 H 1.08999 * 109.47235 * 300.00081 * 9 8 7 42 42 H 1.09003 * 109.47259 * 59.99639 * 9 8 7 43 43 H 0.97005 * 120.00388 * 179.97438 * 13 12 10 44 44 H 1.08993 * 109.88997 * 242.66604 * 22 21 20 45 45 H 1.08998 * 109.88887 * 3.69355 * 22 21 20 46 46 H 1.09008 * 110.70145 * 140.66848 * 23 22 21 47 47 H 1.09000 * 110.70599 * 263.89875 * 23 22 21 48 48 H 1.08993 * 109.47117 * 58.54156 * 26 24 23 49 49 H 1.08997 * 109.46732 * 178.54765 * 26 24 23 50 50 H 1.09000 * 109.47158 * 298.54765 * 26 24 23 51 51 H 1.09002 * 109.47185 * 58.54721 * 29 27 21 52 52 H 1.09001 * 109.46966 * 178.54298 * 29 27 21 53 53 H 1.08994 * 109.47565 * 298.54441 * 29 27 21 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 1.4291 0.0000 0.0000 3 6 2.0102 1.3055 0.0000 4 6 3.5355 1.1848 -0.0006 5 7 4.1311 2.5216 -0.0671 6 6 4.4852 3.3208 0.9844 7 6 4.3344 2.9911 2.4471 8 6 5.6006 2.2917 2.9454 9 6 5.4478 1.9576 4.4306 10 6 6.6947 1.2680 4.9214 11 1 7.5140 1.0859 4.2418 12 6 6.7891 0.8687 6.2377 13 7 7.8774 0.2674 6.6660 14 14 5.3710 1.1819 7.4126 15 1 4.4420 0.0236 7.3872 16 1 5.8991 1.3627 8.7888 17 1 4.6446 2.4083 6.9961 18 7 4.9765 4.4204 0.4872 19 7 4.9566 4.3708 -0.7969 20 6 4.4524 3.2253 -1.1912 21 7 4.2768 2.8098 -2.5016 22 6 3.3479 3.7024 -3.2189 23 6 4.0940 4.2367 -4.4596 24 6 5.2042 3.1764 -4.6834 25 1 4.8186 2.3173 -5.2324 26 6 6.4088 3.7875 -5.4020 27 6 5.5645 2.7885 -3.2277 28 1 6.2532 3.5172 -2.8002 29 6 6.1764 1.3869 -3.1858 30 1 -0.3633 0.5138 0.8900 31 1 -0.3634 0.5138 -0.8900 32 1 -0.3633 -1.0278 0.0005 33 1 1.6885 1.8464 -0.8900 34 1 1.6886 1.8464 0.8899 35 1 3.8609 0.6870 0.9129 36 1 3.8534 0.6020 -0.8651 37 1 4.1805 3.9102 3.0126 38 1 3.4772 2.3322 2.5846 39 1 5.7544 1.3726 2.3800 40 1 6.4579 2.9506 2.8080 41 1 5.2941 2.8768 4.9959 42 1 4.5905 1.2987 4.5685 43 1 7.9440 -0.0132 7.5922 44 1 2.4638 3.1455 -3.5291 45 1 3.0566 4.5307 -2.5731 46 1 3.4265 4.2835 -5.3201 47 1 4.5304 5.2145 -4.2554 48 1 6.8013 4.6162 -4.8128 49 1 7.1824 3.0293 -5.5233 50 1 6.1007 4.1523 -6.3819 51 1 5.4821 0.6738 -3.6302 52 1 7.1111 1.3816 -3.7466 53 1 6.3722 1.1066 -2.1508 RHF calculation, no. of doubly occupied orbitals= 65 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 ZINC001523559194.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 04:52:43 Heat of formation + Delta-G solvation = 23.710411 kcal Electronic energy + Delta-G solvation = -30317.275268 eV Core-core repulsion = 26418.089973 eV Total energy + Delta-G solvation = -3899.185295 eV No. of doubly occupied orbitals = 65 Molecular weight (most abundant/longest-lived isotopes) = 336.227 amu Computer time = 0.76 seconds Orbital eigenvalues (eV) -43.00732 -39.67864 -38.32283 -35.50489 -34.91072 -33.69994 -32.32568 -31.72190 -30.15774 -29.94841 -28.17774 -26.87095 -26.61721 -24.63881 -24.00093 -23.42277 -22.53935 -20.89597 -20.44357 -20.21115 -19.93642 -17.67760 -16.78984 -16.70947 -16.54318 -16.35841 -15.95098 -15.55779 -14.95851 -14.62568 -14.40638 -14.25922 -14.12171 -13.95743 -13.63335 -13.51835 -13.30153 -12.81745 -12.74951 -12.61946 -12.28501 -12.08660 -11.98747 -11.94547 -11.83417 -11.81871 -11.68131 -11.45763 -11.31625 -11.12957 -10.94999 -10.86717 -10.73591 -10.52360 -10.17281 -10.06218 -9.99138 -9.84023 -9.75676 -9.22428 -8.99299 -8.76069 -8.54260 -6.04251 -4.02714 1.69082 2.08251 2.88812 3.27230 3.30098 3.38092 3.41021 3.75321 4.15254 4.27095 4.43063 4.44714 4.53254 4.56224 4.61237 4.84587 4.93740 4.96503 5.02116 5.03693 5.04469 5.06486 5.13803 5.18401 5.28540 5.29429 5.32108 5.35514 5.40062 5.42703 5.44342 5.56237 5.64236 5.67324 5.69020 5.75399 5.81810 5.85814 5.91529 5.99481 6.06627 6.09821 6.40211 6.45446 6.50088 6.58247 6.72235 6.81643 7.18441 7.25236 7.37726 7.77698 8.53323 8.80731 9.00725 9.57629 11.09275 Molecular weight = 336.23amu Principal moments of inertia in cm(-1) A = 0.011759 B = 0.002942 C = 0.002596 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 2380.655695 B = 9514.583048 C =10784.145183 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C 0.034 3.966 2 O -0.384 6.384 3 C 0.054 3.946 4 C 0.113 3.887 5 N -0.461 5.461 6 C 0.206 3.794 7 C -0.040 4.040 8 C -0.095 4.095 9 C -0.012 4.012 10 C -0.521 4.521 11 H 0.071 0.929 12 C 0.066 3.934 13 N -0.903 5.903 14 Si 0.880 3.120 15 H -0.277 1.277 16 H -0.288 1.288 17 H -0.264 1.264 18 N -0.288 5.288 19 N -0.310 5.310 20 C 0.332 3.668 21 N -0.454 5.454 22 C 0.056 3.944 23 C -0.135 4.135 24 C -0.094 4.094 25 H 0.087 0.913 26 C -0.142 4.142 27 C 0.082 3.918 28 H 0.075 0.925 29 C -0.138 4.138 30 H 0.044 0.956 31 H 0.041 0.959 32 H 0.090 0.910 33 H 0.055 0.945 34 H 0.056 0.944 35 H 0.109 0.891 36 H 0.109 0.891 37 H 0.098 0.902 38 H 0.078 0.922 39 H 0.052 0.948 40 H 0.064 0.936 41 H 0.020 0.980 42 H 0.012 0.988 43 H 0.263 0.737 44 H 0.082 0.918 45 H 0.065 0.935 46 H 0.078 0.922 47 H 0.075 0.925 48 H 0.058 0.942 49 H 0.059 0.941 50 H 0.059 0.941 51 H 0.064 0.936 52 H 0.065 0.935 53 H 0.054 0.946 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -14.138 3.125 -24.626 28.567 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 -0.063 4.063 2 O -0.302 6.302 3 C -0.024 4.024 4 C -0.011 4.011 5 N -0.155 5.155 6 C -0.061 4.061 7 C -0.080 4.080 8 C -0.134 4.134 9 C -0.049 4.049 10 C -0.559 4.559 11 H 0.089 0.911 12 C -0.135 4.135 13 N -0.542 5.542 14 Si 0.707 3.293 15 H -0.203 1.203 16 H -0.214 1.214 17 H -0.189 1.189 18 N -0.128 5.128 19 N -0.154 5.154 20 C -0.024 4.024 21 N -0.180 5.180 22 C -0.071 4.071 23 C -0.173 4.173 24 C -0.113 4.113 25 H 0.105 0.895 26 C -0.200 4.200 27 C -0.025 4.025 28 H 0.093 0.907 29 C -0.196 4.196 30 H 0.062 0.938 31 H 0.060 0.940 32 H 0.109 0.891 33 H 0.074 0.926 34 H 0.074 0.926 35 H 0.128 0.872 36 H 0.127 0.873 37 H 0.117 0.883 38 H 0.096 0.904 39 H 0.071 0.929 40 H 0.082 0.918 41 H 0.038 0.962 42 H 0.030 0.970 43 H 0.073 0.927 44 H 0.100 0.900 45 H 0.083 0.917 46 H 0.097 0.903 47 H 0.094 0.906 48 H 0.077 0.923 49 H 0.078 0.922 50 H 0.078 0.922 51 H 0.083 0.917 52 H 0.084 0.916 53 H 0.073 0.927 Dipole moment (debyes) X Y Z Total from point charges -13.565 3.741 -24.511 28.263 hybrid contribution -1.202 -0.330 0.801 1.481 sum -14.767 3.412 -23.710 28.140 Atomic orbital electron populations 1.22779 0.80195 1.03128 1.00158 1.87830 1.20308 1.26539 1.95497 1.22680 0.92933 0.85608 1.01188 1.21563 0.92068 0.80706 1.06731 1.46167 1.47047 1.16116 1.06186 1.25289 0.99524 0.88322 0.92944 1.20412 1.01294 1.02877 0.83411 1.21476 0.94373 0.98858 0.98681 1.19571 0.97621 0.96588 0.91151 1.21105 1.01294 1.37502 0.95955 0.91070 1.25033 0.95687 0.94576 0.98193 1.69916 1.27290 1.40556 1.16469 0.86782 0.82924 0.79259 0.80347 1.20327 1.21390 1.18883 1.74078 1.18646 1.18940 1.01128 1.74546 1.19192 1.16235 1.05421 1.22390 1.02647 0.89516 0.87876 1.60190 1.12518 1.49343 0.95963 1.22799 0.95011 0.94602 0.94661 1.22839 0.97635 0.99235 0.97578 1.22318 0.95902 0.98389 0.94701 0.89500 1.21726 0.97052 1.00978 1.00197 1.22775 0.88593 0.98612 0.92502 0.90682 1.21741 1.00332 0.95238 1.02255 0.93767 0.94001 0.89139 0.92631 0.92576 0.87241 0.87265 0.88328 0.90397 0.92889 0.91752 0.96207 0.96968 0.92724 0.89957 0.91655 0.90331 0.90584 0.92251 0.92223 0.92203 0.91742 0.91647 0.92668 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 0.26 11.01 101.05 1.11 1.37 16 2 O -0.38 -4.15 10.70 -35.23 -0.38 -4.53 16 3 C 0.05 0.56 6.26 37.16 0.23 0.79 16 4 C 0.11 1.32 6.27 -4.04 -0.03 1.29 16 5 N -0.46 -6.48 2.81 -114.08 -0.32 -6.80 16 6 C 0.21 3.34 7.32 -154.01 -1.13 2.21 16 7 C -0.04 -0.63 5.41 -27.89 -0.15 -0.78 16 8 C -0.10 -1.85 5.13 -26.73 -0.14 -1.99 16 9 C -0.01 -0.27 4.04 -27.89 -0.11 -0.39 16 10 C -0.52 -14.79 9.66 -34.44 -0.33 -15.12 16 11 H 0.07 2.19 7.99 -52.49 -0.42 1.77 16 12 C 0.07 1.93 5.47 -17.82 -0.10 1.83 16 13 N -0.90 -27.96 13.96 55.43 0.77 -27.18 16 14 Si 0.88 21.50 27.47 -169.99 -4.67 16.84 16 15 H -0.28 -6.62 7.11 56.52 0.40 -6.22 16 16 H -0.29 -7.02 7.11 56.52 0.40 -6.62 16 17 H -0.26 -6.15 6.54 56.52 0.37 -5.78 16 18 N -0.29 -5.29 12.18 32.99 0.40 -4.88 16 19 N -0.31 -5.29 11.68 30.32 0.35 -4.94 16 20 C 0.33 4.75 6.17 -318.86 -1.97 2.78 16 21 N -0.45 -5.12 4.86 -163.86 -0.80 -5.92 16 22 C 0.06 0.53 6.83 -2.84 -0.02 0.51 16 23 C -0.13 -1.03 6.41 -24.91 -0.16 -1.18 16 24 C -0.09 -0.72 3.05 -88.48 -0.27 -0.99 16 25 H 0.09 0.60 8.06 -51.93 -0.42 0.19 16 26 C -0.14 -0.96 9.30 37.16 0.35 -0.61 16 27 C 0.08 0.85 2.46 -66.19 -0.16 0.69 16 28 H 0.08 0.96 7.35 -51.93 -0.38 0.58 16 29 C -0.14 -1.32 9.59 37.16 0.36 -0.96 16 30 H 0.04 0.31 8.14 -51.93 -0.42 -0.11 16 31 H 0.04 0.27 8.14 -51.93 -0.42 -0.15 16 32 H 0.09 0.57 8.14 -51.92 -0.42 0.15 16 33 H 0.06 0.56 8.14 -51.93 -0.42 0.13 16 34 H 0.06 0.58 8.14 -51.93 -0.42 0.16 16 35 H 0.11 1.32 7.83 -51.92 -0.41 0.91 16 36 H 0.11 1.21 8.14 -51.93 -0.42 0.78 16 37 H 0.10 1.51 8.14 -51.93 -0.42 1.09 16 38 H 0.08 1.07 7.90 -51.93 -0.41 0.66 16 39 H 0.05 1.02 8.14 -51.93 -0.42 0.60 16 40 H 0.06 1.34 8.14 -51.93 -0.42 0.92 16 41 H 0.02 0.46 7.20 -51.93 -0.37 0.08 16 42 H 0.01 0.27 7.57 -51.93 -0.39 -0.12 16 43 H 0.26 7.60 8.31 -40.82 -0.34 7.27 16 44 H 0.08 0.65 8.14 -51.93 -0.42 0.23 16 45 H 0.06 0.72 7.47 -51.93 -0.39 0.33 16 46 H 0.08 0.46 8.14 -51.92 -0.42 0.03 16 47 H 0.08 0.64 8.04 -51.93 -0.42 0.22 16 48 H 0.06 0.45 8.10 -51.93 -0.42 0.03 16 49 H 0.06 0.38 8.14 -51.93 -0.42 -0.05 16 50 H 0.06 0.34 8.14 -51.93 -0.42 -0.09 16 51 H 0.06 0.56 8.14 -51.93 -0.42 0.14 16 52 H 0.06 0.54 8.14 -51.93 -0.42 0.11 16 53 H 0.05 0.63 8.14 -51.93 -0.42 0.21 16 LS Contribution 424.87 15.07 6.40 6.40 Total: -1.00 -33.39 424.87 -10.71 -44.10 By element: Atomic # 1 Polarization: 7.42 SS G_CDS: -9.96 Total: -2.54 kcal Atomic # 6 Polarization: -8.03 SS G_CDS: -2.52 Total: -10.54 kcal Atomic # 7 Polarization: -50.14 SS G_CDS: 0.41 Total: -49.73 kcal Atomic # 8 Polarization: -4.15 SS G_CDS: -0.38 Total: -4.53 kcal Atomic # 14 Polarization: 21.50 SS G_CDS: -4.67 Total: 16.84 kcal Total LS contribution 6.40 Total: 6.40 kcal Total: -33.39 -10.71 -44.10 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. ZINC001523559194.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 67.807 kcal (2) G-P(sol) polarization free energy of solvation -33.390 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system 34.416 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -10.706 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -44.096 kcal (6) G-S(sol) free energy of system = (1) + (5) 23.710 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.76 seconds