Wall clock time and date at job start Tue Mar 31 2020 21:05:34 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 C 1.53004 * 109.47225 * 2 1 4 4 C 1.53001 * 109.47197 * 180.02562 * 3 2 1 5 5 H 1.09001 * 110.53587 * 307.61204 * 4 3 2 6 6 C 1.54887 * 110.48548 * 70.22398 * 4 3 2 7 7 C 1.54893 * 102.74533 * 156.62347 * 6 4 3 8 8 C 1.54266 * 104.19500 * 322.05712 * 7 6 4 9 9 C 1.53872 * 106.60044 * 23.61099 * 8 7 6 10 10 H 1.09003 * 110.03622 * 240.71485 * 9 8 7 11 11 C 1.50699 * 110.03502 * 119.28320 * 9 8 7 12 12 O 1.21279 * 120.00093 * 242.83701 * 11 9 8 13 13 N 1.34782 * 119.99944 * 62.83425 * 11 9 8 14 14 C 1.47128 * 121.05108 * 359.72387 * 13 11 9 15 15 C 1.52764 * 108.97548 * 232.16937 * 14 13 11 16 16 O 1.43105 * 109.42074 * 306.12162 * 15 14 13 17 17 C 1.42494 * 113.97214 * 59.82850 * 16 15 14 18 18 C 1.53469 * 113.76068 * 73.17291 * 17 16 15 19 19 N 1.47670 * 85.96952 * 91.28714 * 18 17 16 20 20 C 1.36936 * 134.45686 * 204.30430 * 19 18 17 21 21 H 1.07999 * 120.00182 * 179.97438 * 20 19 18 22 22 C 1.38813 * 119.99983 * 359.97438 * 20 19 18 23 23 N 1.31624 * 120.00132 * 359.97438 * 22 20 19 24 24 Si 1.86793 * 120.00145 * 179.97438 * 22 20 19 25 25 H 1.48500 * 109.47239 * 60.00156 * 24 22 20 26 26 H 1.48502 * 109.47248 * 179.97438 * 24 22 20 27 27 H 1.48499 * 109.47488 * 299.99952 * 24 22 20 28 28 C 1.47673 * 91.08517 * 24.29195 * 19 18 17 29 29 C 1.47332 * 121.05642 * 180.02562 * 13 11 9 30 30 H 1.08996 * 109.47299 * 59.99480 * 1 2 3 31 31 H 1.08999 * 109.47174 * 180.02562 * 1 2 3 32 32 H 1.09004 * 109.46716 * 299.99596 * 1 2 3 33 33 H 1.09005 * 109.47163 * 240.00115 * 2 1 3 34 34 H 1.08996 * 109.47299 * 120.00520 * 2 1 3 35 35 H 1.09005 * 109.46956 * 59.99988 * 3 2 1 36 36 H 1.08994 * 109.46898 * 300.00432 * 3 2 1 37 37 H 1.09001 * 110.75744 * 274.93249 * 6 4 3 38 38 H 1.09000 * 110.75698 * 38.31067 * 6 4 3 39 39 H 1.09002 * 110.48578 * 203.38190 * 7 6 4 40 40 H 1.08998 * 110.60430 * 80.79077 * 7 6 4 41 41 H 1.09002 * 110.02957 * 264.32709 * 8 7 6 42 42 H 1.09000 * 110.07144 * 142.92082 * 8 7 6 43 43 H 1.08997 * 109.59867 * 351.99972 * 14 13 11 44 44 H 1.09001 * 109.59613 * 112.45620 * 14 13 11 45 45 H 1.08998 * 109.56700 * 186.06919 * 15 14 13 46 46 H 1.08996 * 109.36414 * 66.04771 * 15 14 13 47 47 H 1.09003 * 113.78973 * 205.55158 * 18 17 16 48 48 H 1.09000 * 113.79515 * 337.02008 * 18 17 16 49 49 H 0.96995 * 120.00399 * 179.97438 * 23 22 20 50 50 H 1.09006 * 113.78976 * 221.43696 * 28 19 18 51 51 H 1.09003 * 113.89938 * 89.98442 * 28 19 18 52 52 H 1.09006 * 109.75058 * 251.23951 * 29 13 11 53 53 H 1.08999 * 109.75070 * 11.91896 * 29 13 11 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 6 2.0400 1.4425 0.0000 4 6 3.5700 1.4425 -0.0006 5 1 3.9527 0.8194 0.8077 6 6 4.1115 0.9518 -1.3663 7 6 5.5301 1.5718 -1.4141 8 6 5.3563 2.9643 -0.7734 9 6 4.1100 2.8821 0.1253 10 1 3.3575 3.5941 -0.2136 11 6 4.4855 3.1692 1.5563 12 8 4.3408 2.3144 2.4044 13 7 4.9823 4.3758 1.8935 14 6 5.1732 5.4275 0.8825 15 6 6.6072 5.9466 0.9703 16 8 6.8850 6.3522 2.3143 17 6 6.7522 5.3069 3.2736 18 6 7.8858 4.2736 3.2230 19 7 8.5632 5.1220 4.2240 20 6 9.8681 5.3158 4.5915 21 1 10.1093 6.0154 5.3781 22 6 10.8807 4.6129 3.9531 23 7 10.5866 3.7599 2.9949 24 14 12.6606 4.8778 4.4539 25 1 12.8290 4.5271 5.8871 26 1 13.5413 4.0143 3.6268 27 1 13.0266 6.3019 4.2465 28 6 7.2697 5.6779 4.6696 29 6 5.3576 4.6814 3.2851 30 1 -0.3634 0.5139 -0.8899 31 1 -0.3633 -1.0277 0.0005 32 1 -0.3633 0.5138 0.8901 33 1 1.8933 -0.5138 -0.8900 34 1 1.8933 -0.5139 0.8899 35 1 1.6767 1.9564 0.8900 36 1 1.6766 1.9563 -0.8899 37 1 4.1646 -0.1366 -1.3923 38 1 3.4972 1.3294 -2.1837 39 1 5.8706 1.6662 -2.4453 40 1 6.2313 0.9705 -0.8354 41 1 5.2086 3.7162 -1.5486 42 1 6.2326 3.2127 -0.1748 43 1 4.9950 5.0162 -0.1110 44 1 4.4790 6.2465 1.0713 45 1 6.7288 6.7982 0.3010 46 1 7.2968 5.1542 0.6797 47 1 7.6019 3.2908 3.5994 48 1 8.3995 4.2310 2.2626 49 1 11.2942 3.2690 2.5485 50 1 7.2941 6.7511 4.8587 51 1 6.8012 5.1141 5.4764 52 1 4.6427 5.3839 3.7137 53 1 5.3698 3.7638 3.8733 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 ZINC001053320338.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 21:05:34 Heat of formation + Delta-G solvation = -34.896484 kcal Electronic energy + Delta-G solvation = -31319.106761 eV Core-core repulsion = 27385.087329 eV Total energy + Delta-G solvation = -3934.019432 eV No. of doubly occupied orbitals = 65 Molecular weight (most abundant/longest-lived isotopes) = 336.220 amu Computer time = 0.97 seconds Orbital eigenvalues (eV) -40.74858 -39.29067 -37.50317 -36.23212 -34.74684 -34.28386 -32.25940 -30.36491 -29.90402 -29.27770 -27.71345 -25.93007 -25.20429 -25.05762 -23.27750 -22.22623 -21.65394 -20.92114 -20.22798 -19.03957 -18.56659 -17.08156 -16.72328 -16.26226 -15.79008 -15.62151 -15.27072 -14.97197 -14.85048 -14.48518 -14.32412 -14.08571 -13.84680 -13.60969 -13.29268 -13.20442 -13.13283 -12.76736 -12.57849 -12.46204 -12.27142 -11.96846 -11.59962 -11.54464 -11.31308 -11.14628 -11.12123 -10.94821 -10.88246 -10.79532 -10.79115 -10.66074 -10.59528 -10.55832 -10.46323 -10.20969 -9.92054 -9.57994 -9.44391 -9.20863 -8.80059 -8.19554 -6.85687 -5.72818 -3.05023 2.76499 3.03601 3.42382 3.45811 3.47217 4.06688 4.28998 4.43343 4.46005 4.47339 4.81586 4.88042 4.93684 4.95826 5.02956 5.10426 5.15202 5.23389 5.28728 5.30854 5.33904 5.39205 5.40397 5.46461 5.51268 5.53385 5.61327 5.68901 5.70650 5.75661 5.76535 5.80713 5.84987 5.91435 5.97527 6.00687 6.03082 6.10242 6.15104 6.19498 6.22037 6.31800 6.42089 6.50026 6.51307 6.62480 7.03110 7.20903 7.51657 7.52420 7.83631 8.00332 8.31589 9.06951 9.73698 10.60421 11.44181 Molecular weight = 336.22amu Principal moments of inertia in cm(-1) A = 0.016836 B = 0.002984 C = 0.002856 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1662.752418 B = 9380.220259 C = 9802.883214 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.152 4.152 2 C -0.124 4.124 3 C -0.108 4.108 4 C -0.080 4.080 5 H 0.095 0.905 6 C -0.118 4.118 7 C -0.124 4.124 8 C -0.120 4.120 9 C -0.108 4.108 10 H 0.095 0.905 11 C 0.522 3.478 12 O -0.538 6.538 13 N -0.609 5.609 14 C 0.068 3.932 15 C 0.047 3.953 16 O -0.342 6.342 17 C 0.050 3.950 18 C 0.153 3.847 19 N -0.603 5.603 20 C -0.219 4.219 21 H 0.080 0.920 22 C -0.008 4.008 23 N -0.922 5.922 24 Si 0.913 3.087 25 H -0.285 1.285 26 H -0.290 1.290 27 H -0.284 1.284 28 C 0.136 3.864 29 C 0.099 3.901 30 H 0.051 0.949 31 H 0.051 0.949 32 H 0.053 0.947 33 H 0.061 0.939 34 H 0.063 0.937 35 H 0.061 0.939 36 H 0.059 0.941 37 H 0.067 0.933 38 H 0.066 0.934 39 H 0.067 0.933 40 H 0.069 0.931 41 H 0.073 0.927 42 H 0.074 0.926 43 H 0.095 0.905 44 H 0.073 0.927 45 H 0.100 0.900 46 H 0.060 0.940 47 H 0.033 0.967 48 H 0.075 0.925 49 H 0.253 0.747 50 H 0.055 0.945 51 H 0.050 0.950 52 H 0.067 0.933 53 H 0.100 0.900 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -18.675 -1.937 -11.708 22.127 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 -0.210 4.210 2 C -0.161 4.161 3 C -0.146 4.146 4 C -0.098 4.098 5 H 0.114 0.886 6 C -0.155 4.155 7 C -0.162 4.162 8 C -0.157 4.157 9 C -0.129 4.129 10 H 0.113 0.887 11 C 0.311 3.689 12 O -0.415 6.415 13 N -0.343 5.343 14 C -0.055 4.055 15 C -0.031 4.031 16 O -0.259 6.259 17 C 0.008 3.992 18 C 0.027 3.973 19 N -0.329 5.329 20 C -0.346 4.346 21 H 0.098 0.902 22 C -0.205 4.205 23 N -0.570 5.570 24 Si 0.743 3.257 25 H -0.212 1.212 26 H -0.216 1.216 27 H -0.211 1.211 28 C 0.009 3.991 29 C -0.024 4.024 30 H 0.070 0.930 31 H 0.070 0.930 32 H 0.072 0.928 33 H 0.080 0.920 34 H 0.081 0.919 35 H 0.080 0.920 36 H 0.078 0.922 37 H 0.086 0.914 38 H 0.085 0.915 39 H 0.086 0.914 40 H 0.088 0.912 41 H 0.091 0.909 42 H 0.093 0.907 43 H 0.113 0.887 44 H 0.091 0.909 45 H 0.118 0.882 46 H 0.078 0.922 47 H 0.050 0.950 48 H 0.093 0.907 49 H 0.063 0.937 50 H 0.074 0.926 51 H 0.067 0.933 52 H 0.085 0.915 53 H 0.119 0.881 Dipole moment (debyes) X Y Z Total from point charges -18.333 -2.255 -11.212 21.607 hybrid contribution 0.956 -0.030 0.191 0.976 sum -17.376 -2.286 -11.020 20.703 Atomic orbital electron populations 1.21777 0.96200 1.01368 1.01615 1.21517 0.95446 0.97000 1.02147 1.21615 0.94463 0.96902 1.01612 1.21991 0.94976 0.94275 0.98577 0.88641 1.22575 0.95951 1.00303 0.96696 1.22349 0.97376 0.95803 1.00650 1.22258 0.96931 0.98324 0.98230 1.22004 0.98977 0.99563 0.92356 0.88679 1.20571 0.76583 0.81042 0.90746 1.90667 1.54139 1.44980 1.51669 1.48118 1.63667 1.13129 1.09370 1.22468 0.98919 0.91186 0.92906 1.22777 0.93748 1.00903 0.85693 1.87930 1.89753 1.33560 1.14698 1.23674 0.92419 0.91048 0.92056 1.22661 0.87575 0.91394 0.95648 1.45776 0.99728 1.46610 1.40807 1.18949 0.80138 1.19745 1.15775 0.90195 1.24769 0.97922 0.98925 0.98852 1.69807 1.31357 1.29389 1.26422 0.86185 0.84392 0.77409 0.77683 1.21203 1.21611 1.21085 1.22487 0.86995 0.98465 0.91133 1.22226 0.96120 1.01613 0.82436 0.92970 0.92970 0.92835 0.92028 0.91855 0.92030 0.92246 0.91418 0.91511 0.91433 0.91193 0.90882 0.90721 0.88691 0.90898 0.88201 0.92176 0.94981 0.90660 0.93697 0.92648 0.93291 0.91482 0.88130 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 15. 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 -1.16 9.91 37.16 0.37 -0.80 16 2 C -0.12 -1.08 5.81 -26.73 -0.16 -1.23 16 3 C -0.11 -1.02 4.56 -26.73 -0.12 -1.14 16 4 C -0.08 -0.86 2.18 -88.96 -0.19 -1.05 16 5 H 0.10 1.31 6.88 -51.93 -0.36 0.95 16 6 C -0.12 -1.06 5.67 -24.74 -0.14 -1.20 16 7 C -0.12 -1.23 6.83 -25.07 -0.17 -1.40 16 8 C -0.12 -1.24 4.68 -25.61 -0.12 -1.36 16 9 C -0.11 -1.20 2.00 -90.66 -0.18 -1.38 16 10 H 0.10 0.88 7.64 -51.93 -0.40 0.48 16 11 C 0.52 7.90 6.87 -10.98 -0.08 7.82 16 12 O -0.54 -10.04 14.90 5.56 0.08 -9.96 16 13 N -0.61 -9.02 3.01 -172.74 -0.52 -9.53 16 14 C 0.07 0.81 5.81 -3.82 -0.02 0.79 16 15 C 0.05 0.69 6.87 37.04 0.25 0.94 16 16 O -0.34 -6.58 10.52 -35.23 -0.37 -6.95 16 17 C 0.05 0.98 1.21 -90.32 -0.11 0.87 16 18 C 0.15 3.74 6.65 -3.17 -0.02 3.72 16 19 N -0.60 -16.03 3.70 -180.31 -0.67 -16.70 16 20 C -0.22 -6.31 10.70 -15.06 -0.16 -6.47 16 21 H 0.08 2.21 7.83 -52.49 -0.41 1.80 16 22 C -0.01 -0.25 5.50 -17.43 -0.10 -0.34 16 23 N -0.92 -27.91 11.39 55.49 0.63 -27.28 16 24 Si 0.91 22.62 29.55 -169.99 -5.02 17.60 16 25 H -0.29 -6.96 7.11 56.52 0.40 -6.55 16 26 H -0.29 -7.22 7.11 56.52 0.40 -6.82 16 27 H -0.28 -6.92 7.11 56.52 0.40 -6.52 16 28 C 0.14 2.88 8.33 -3.18 -0.03 2.85 16 29 C 0.10 1.66 5.78 -3.66 -0.02 1.64 16 30 H 0.05 0.36 8.14 -51.93 -0.42 -0.06 16 31 H 0.05 0.36 8.14 -51.93 -0.42 -0.06 16 32 H 0.05 0.42 8.14 -51.93 -0.42 0.00 16 33 H 0.06 0.49 7.55 -51.93 -0.39 0.10 16 34 H 0.06 0.62 8.14 -51.93 -0.42 0.19 16 35 H 0.06 0.66 8.14 -51.93 -0.42 0.23 16 36 H 0.06 0.48 8.02 -51.93 -0.42 0.07 16 37 H 0.07 0.58 8.06 -51.93 -0.42 0.17 16 38 H 0.07 0.52 7.96 -51.93 -0.41 0.10 16 39 H 0.07 0.57 8.14 -51.93 -0.42 0.15 16 40 H 0.07 0.80 8.14 -51.93 -0.42 0.38 16 41 H 0.07 0.59 7.55 -51.93 -0.39 0.20 16 42 H 0.07 0.96 7.08 -51.93 -0.37 0.59 16 43 H 0.09 0.88 4.40 -51.93 -0.23 0.65 16 44 H 0.07 0.77 8.14 -51.93 -0.42 0.35 16 45 H 0.10 1.19 8.14 -51.93 -0.42 0.77 16 46 H 0.06 1.00 7.09 -51.93 -0.37 0.63 16 47 H 0.03 0.83 7.94 -51.93 -0.41 0.42 16 48 H 0.08 2.04 6.31 -51.93 -0.33 1.71 16 49 H 0.25 7.43 8.31 -40.82 -0.34 7.09 16 50 H 0.06 1.13 8.14 -51.93 -0.42 0.71 16 51 H 0.05 0.96 8.09 -51.93 -0.42 0.54 16 52 H 0.07 1.00 8.14 -51.93 -0.42 0.58 16 53 H 0.10 1.84 6.91 -51.93 -0.36 1.48 16 LS Contribution 400.94 15.07 6.04 6.04 Total: -1.00 -33.90 400.94 -10.28 -44.19 By element: Atomic # 1 Polarization: 9.79 SS G_CDS: -9.47 Total: 0.33 kcal Atomic # 6 Polarization: 3.26 SS G_CDS: -0.99 Total: 2.27 kcal Atomic # 7 Polarization: -52.96 SS G_CDS: -0.56 Total: -53.51 kcal Atomic # 8 Polarization: -16.62 SS G_CDS: -0.29 Total: -16.91 kcal Atomic # 14 Polarization: 22.62 SS G_CDS: -5.02 Total: 17.60 kcal Total LS contribution 6.04 Total: 6.04 kcal Total: -33.90 -10.28 -44.19 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. ZINC001053320338.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 9.290 kcal (2) G-P(sol) polarization free energy of solvation -33.903 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -24.612 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -10.284 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -44.187 kcal (6) G-S(sol) free energy of system = (1) + (5) -34.896 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.97 seconds