Wall clock time and date at job start Tue Mar 31 2020 21:25:52 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 1.52995 * 1 3 3 N 1.46500 * 109.47041 * 2 1 4 4 C 1.34784 * 119.99993 * 269.99812 * 3 2 1 5 5 O 1.21275 * 119.99754 * 0.02562 * 4 3 2 6 6 C 1.50702 * 119.99769 * 180.02562 * 4 3 2 7 7 H 1.08998 * 115.55022 * 306.18962 * 6 4 3 8 8 C 1.53028 * 117.49777 * 160.51174 * 6 4 3 9 9 C 1.52816 * 117.50201 * 91.88493 * 6 4 3 10 10 C 1.53185 * 117.71477 * 359.85208 * 9 6 4 11 11 C 1.53343 * 108.76860 * 158.89146 * 10 9 6 12 12 N 1.46837 * 108.81750 * 51.31046 * 11 10 9 13 13 C 1.34778 * 120.38604 * 123.07803 * 12 11 10 14 14 O 1.21277 * 120.00191 * 180.02562 * 13 12 11 15 15 C 1.50704 * 120.00013 * 0.02562 * 13 12 11 16 16 C 1.50697 * 109.47312 * 180.02562 * 15 13 12 17 17 H 1.08003 * 119.99893 * 0.02562 * 16 15 13 18 18 C 1.37871 * 120.00259 * 180.02562 * 16 15 13 19 19 N 1.31519 * 119.99559 * 359.97438 * 18 16 15 20 20 Si 1.86801 * 120.00451 * 180.02562 * 18 16 15 21 21 H 1.48502 * 109.46913 * 59.99677 * 20 18 16 22 22 H 1.48499 * 109.47429 * 180.02562 * 20 18 16 23 23 H 1.48502 * 109.46652 * 299.99747 * 20 18 16 24 24 C 1.46846 * 119.23498 * 303.09802 * 12 11 10 25 25 C 1.53180 * 117.70880 * 215.09898 * 9 6 4 26 26 C 1.46498 * 120.00216 * 90.00329 * 3 2 1 27 27 C 1.53004 * 109.46838 * 299.99721 * 26 3 2 28 28 C 1.52998 * 109.47242 * 59.99945 * 26 3 2 29 29 H 1.08996 * 109.47403 * 59.99850 * 1 2 3 30 30 H 1.09001 * 109.47239 * 180.02562 * 1 2 3 31 31 H 1.08998 * 109.47107 * 299.99879 * 1 2 3 32 32 H 1.09002 * 109.47394 * 119.99750 * 2 1 3 33 33 H 1.08998 * 109.47107 * 240.00121 * 2 1 3 34 34 H 1.09003 * 117.50462 * 359.97438 * 8 6 4 35 35 H 1.08999 * 117.50501 * 145.04295 * 8 6 4 36 36 H 1.09000 * 109.58757 * 278.68194 * 10 9 6 37 37 H 1.09000 * 109.58669 * 39.10506 * 10 9 6 38 38 H 1.08996 * 109.58101 * 291.50851 * 11 10 9 39 39 H 1.09003 * 109.57496 * 171.10715 * 11 10 9 40 40 H 1.08997 * 109.46974 * 300.00807 * 15 13 12 41 41 H 1.09000 * 109.46632 * 59.99898 * 15 13 12 42 42 H 0.97005 * 119.99535 * 180.02562 * 19 18 16 43 43 H 1.08998 * 109.57833 * 297.10963 * 24 12 11 44 44 H 1.08997 * 109.69386 * 176.76701 * 24 12 11 45 45 H 1.09001 * 109.59319 * 320.89431 * 25 9 6 46 46 H 1.09004 * 109.59496 * 81.18870 * 25 9 6 47 47 H 1.09006 * 109.47506 * 180.02562 * 26 3 2 48 48 H 1.09004 * 109.46928 * 60.00453 * 27 26 3 49 49 H 1.09004 * 109.47149 * 179.97438 * 27 26 3 50 50 H 1.08992 * 109.47227 * 299.99854 * 27 26 3 51 51 H 1.08997 * 109.47391 * 60.00325 * 28 26 3 52 52 H 1.09004 * 109.47287 * 180.02562 * 28 26 3 53 53 H 1.09004 * 109.46922 * 299.99720 * 28 26 3 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 7 2.0183 1.3812 0.0000 4 6 2.2429 2.0166 -1.1673 5 8 2.0404 1.4450 -2.2175 6 6 2.7458 3.4372 -1.1672 7 1 2.1546 4.1452 -0.5864 8 6 3.4083 3.9523 -2.4469 9 6 4.2584 3.6504 -1.2120 10 6 5.1522 2.4070 -1.2502 11 6 6.5232 2.8020 -1.8122 12 7 7.0234 3.9644 -1.0674 13 6 8.2144 3.9104 -0.4389 14 8 8.6206 4.8744 0.1746 15 6 9.0414 2.6520 -0.4985 16 6 10.3164 2.8515 0.2797 17 1 10.5085 3.7950 0.7689 18 6 11.2378 1.8295 0.3672 19 7 11.0036 0.6804 -0.2281 20 14 12.8179 2.0765 1.3324 21 1 12.4904 2.3864 2.7473 22 1 13.6335 0.8370 1.2725 23 1 13.5863 3.2029 0.7440 24 6 6.2107 5.1864 -1.0149 25 6 4.8333 4.8398 -0.4366 26 6 2.2625 2.0718 1.2687 27 6 0.9615 2.1398 2.0710 28 6 3.3171 1.3070 2.0709 29 1 -0.3634 0.5138 -0.8899 30 1 -0.3634 -1.0277 0.0005 31 1 -0.3633 0.5138 0.8900 32 1 1.8933 -0.5138 0.8900 33 1 1.8933 -0.5138 -0.8900 34 1 3.4807 3.2635 -3.2886 35 1 3.2534 4.9993 -2.7076 36 1 5.2710 2.0112 -0.2415 37 1 4.6988 1.6505 -1.8907 38 1 6.4254 3.0585 -2.8670 39 1 7.2177 1.9695 -1.6995 40 1 8.4775 1.8258 -0.0657 41 1 9.2811 2.4236 -1.5370 42 1 11.6517 -0.0387 -0.1663 43 1 6.0935 5.5905 -2.0204 44 1 6.6986 5.9249 -0.3789 45 1 4.1684 5.6976 -0.5372 46 1 4.9327 4.5760 0.6164 47 1 2.6193 3.0824 1.0695 48 1 0.6043 1.1294 2.2703 49 1 1.1432 2.6533 3.0152 50 1 0.2102 2.6847 1.4995 51 1 4.2440 1.2586 1.4994 52 1 3.4985 1.8206 3.0151 53 1 2.9599 0.2966 2.2702 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 ZINC001269024703.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 21:25:52 Heat of formation + Delta-G solvation = -56.567624 kcal Electronic energy + Delta-G solvation = -31024.136992 eV Core-core repulsion = 27089.177829 eV Total energy + Delta-G solvation = -3934.959163 eV No. of doubly occupied orbitals = 65 Molecular weight (most abundant/longest-lived isotopes) = 336.220 amu Computer time = 0.88 seconds Orbital eigenvalues (eV) -40.87915 -39.38971 -37.87251 -36.85872 -34.83946 -32.99706 -32.71537 -31.36073 -30.67053 -29.75885 -28.49547 -27.54025 -25.10584 -24.28572 -23.40370 -22.65816 -22.61938 -21.70508 -19.74009 -18.76034 -17.96315 -17.46150 -16.62164 -16.23076 -15.91279 -15.39385 -15.15745 -15.06375 -14.77513 -14.38145 -14.34883 -14.06398 -13.87415 -13.68778 -13.40509 -13.21812 -13.18485 -12.81811 -12.77152 -12.55314 -12.43603 -12.26115 -12.02407 -11.97521 -11.90784 -11.56017 -11.53685 -11.21371 -11.15495 -11.10604 -10.97884 -10.78738 -10.66975 -10.60839 -10.22071 -10.03930 -9.94190 -9.69760 -9.21357 -8.90492 -8.60925 -8.42921 -8.06562 -6.05242 -4.04733 2.41758 2.73437 3.37270 3.39539 3.44366 3.52711 3.65323 3.73662 4.20559 4.45312 4.47912 4.53980 4.63252 4.72610 4.75357 4.81069 4.89482 4.97472 5.08849 5.13837 5.20528 5.28559 5.32839 5.33176 5.34514 5.41942 5.43540 5.51751 5.59708 5.61186 5.64968 5.70110 5.71360 5.79223 5.81967 5.85984 5.90888 5.96099 6.00265 6.01538 6.10332 6.15824 6.32791 6.38387 6.39750 7.04829 7.21810 7.22435 7.32185 7.96543 7.99616 8.06571 8.38239 9.05368 9.21348 9.60253 11.07015 Molecular weight = 336.22amu Principal moments of inertia in cm(-1) A = 0.013907 B = 0.003008 C = 0.002783 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 2012.948528 B = 9306.547425 C =10057.206427 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.172 4.172 2 C 0.109 3.891 3 N -0.603 5.603 4 C 0.550 3.450 5 O -0.540 6.540 6 C -0.189 4.189 7 H 0.123 0.877 8 C -0.138 4.138 9 C -0.088 4.088 10 C -0.101 4.101 11 C 0.116 3.884 12 N -0.626 5.626 13 C 0.517 3.483 14 O -0.546 6.546 15 C 0.008 3.992 16 C -0.509 4.509 17 H 0.074 0.926 18 C 0.055 3.945 19 N -0.901 5.901 20 Si 0.901 3.099 21 H -0.276 1.276 22 H -0.288 1.288 23 H -0.276 1.276 24 C 0.115 3.885 25 C -0.096 4.096 26 C 0.130 3.870 27 C -0.165 4.165 28 C -0.166 4.166 29 H 0.057 0.943 30 H 0.062 0.938 31 H 0.061 0.939 32 H 0.077 0.923 33 H 0.082 0.918 34 H 0.106 0.894 35 H 0.101 0.899 36 H 0.073 0.927 37 H 0.074 0.926 38 H 0.062 0.938 39 H 0.099 0.901 40 H 0.046 0.954 41 H 0.047 0.953 42 H 0.262 0.738 43 H 0.059 0.941 44 H 0.091 0.909 45 H 0.072 0.928 46 H 0.072 0.928 47 H 0.096 0.904 48 H 0.063 0.937 49 H 0.067 0.933 50 H 0.057 0.943 51 H 0.066 0.934 52 H 0.069 0.931 53 H 0.059 0.941 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -23.586 1.860 0.857 23.675 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 -0.230 4.230 2 C -0.013 4.013 3 N -0.336 5.336 4 C 0.339 3.661 5 O -0.417 6.417 6 C -0.210 4.210 7 H 0.141 0.859 8 C -0.175 4.175 9 C -0.089 4.089 10 C -0.139 4.139 11 C -0.007 4.007 12 N -0.363 5.363 13 C 0.309 3.691 14 O -0.422 6.422 15 C -0.031 4.031 16 C -0.547 4.547 17 H 0.092 0.908 18 C -0.145 4.145 19 N -0.540 5.540 20 Si 0.729 3.271 21 H -0.201 1.201 22 H -0.214 1.214 23 H -0.201 1.201 24 C -0.009 4.009 25 C -0.134 4.134 26 C 0.026 3.974 27 C -0.223 4.223 28 C -0.224 4.224 29 H 0.076 0.924 30 H 0.081 0.919 31 H 0.080 0.920 32 H 0.096 0.904 33 H 0.101 0.899 34 H 0.124 0.876 35 H 0.120 0.880 36 H 0.092 0.908 37 H 0.093 0.907 38 H 0.081 0.919 39 H 0.117 0.883 40 H 0.064 0.936 41 H 0.064 0.936 42 H 0.071 0.929 43 H 0.077 0.923 44 H 0.109 0.891 45 H 0.090 0.910 46 H 0.091 0.909 47 H 0.114 0.886 48 H 0.082 0.918 49 H 0.086 0.914 50 H 0.077 0.923 51 H 0.085 0.915 52 H 0.088 0.912 53 H 0.078 0.922 Dipole moment (debyes) X Y Z Total from point charges -23.362 1.885 0.614 23.446 hybrid contribution 0.516 -0.057 0.561 0.764 sum -22.845 1.828 1.175 22.948 Atomic orbital electron populations 1.22297 0.96080 1.02126 1.02516 1.21375 0.94209 0.82536 1.03221 1.48006 1.65806 1.13998 1.05796 1.19680 0.76317 0.87043 0.83070 1.90682 1.52153 1.67663 1.31156 1.22337 0.97629 0.95272 1.05751 0.85933 1.23104 1.00764 1.02090 0.91529 1.21559 0.88485 0.98167 1.00656 1.21627 0.95139 0.94775 1.02408 1.21581 0.94642 0.89551 0.94953 1.48300 1.20239 1.13573 1.54152 1.22046 0.79555 0.91666 0.75802 1.90516 1.70375 1.38913 1.42438 1.19230 0.94767 0.89604 0.99512 1.21140 1.01665 1.00192 1.31719 0.90812 1.24996 0.98638 0.95039 0.95852 1.69950 1.36264 1.03780 1.44044 0.86502 0.82808 0.77258 0.80554 1.20143 1.21366 1.20134 1.21344 0.90007 0.88689 1.00814 1.21587 0.96856 0.95398 0.99576 1.21203 0.95483 0.97210 0.83473 1.22305 0.97242 1.02614 1.00180 1.22200 0.99059 1.00680 1.00464 0.92394 0.91865 0.92022 0.90442 0.89920 0.87604 0.88020 0.90844 0.90743 0.91924 0.88324 0.93582 0.93553 0.92865 0.92303 0.89066 0.90971 0.90911 0.88614 0.91773 0.91385 0.92347 0.91539 0.91177 0.92203 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 -0.17 -1.35 9.96 37.16 0.37 -0.98 16 2 C 0.11 0.99 5.55 -4.04 -0.02 0.96 16 3 N -0.60 -5.88 2.40 -166.11 -0.40 -6.27 16 4 C 0.55 6.57 5.99 -10.98 -0.07 6.51 16 5 O -0.54 -8.28 15.99 5.56 0.09 -8.19 16 6 C -0.19 -1.90 4.09 -91.85 -0.38 -2.28 16 7 H 0.12 1.01 7.64 -51.93 -0.40 0.61 16 8 C -0.14 -1.41 9.45 -26.75 -0.25 -1.67 16 9 C -0.09 -0.96 1.94 -154.45 -0.30 -1.26 16 10 C -0.10 -1.31 5.24 -26.46 -0.14 -1.44 16 11 C 0.12 1.74 6.35 -3.68 -0.02 1.71 16 12 N -0.63 -10.89 2.92 -172.71 -0.50 -11.39 16 13 C 0.52 11.76 7.68 -10.98 -0.08 11.68 16 14 O -0.55 -14.11 14.84 5.56 0.08 -14.03 16 15 C 0.01 0.20 3.79 -29.03 -0.11 0.09 16 16 C -0.51 -14.73 8.92 -34.44 -0.31 -15.04 16 17 H 0.07 2.23 6.75 -52.48 -0.35 1.87 16 18 C 0.06 1.58 5.46 -17.82 -0.10 1.49 16 19 N -0.90 -26.24 13.29 55.43 0.74 -25.50 16 20 Si 0.90 22.09 29.54 -169.99 -5.02 17.07 16 21 H -0.28 -6.69 7.11 56.52 0.40 -6.29 16 22 H -0.29 -6.89 7.11 56.52 0.40 -6.48 16 23 H -0.28 -6.72 7.11 56.52 0.40 -6.32 16 24 C 0.11 1.63 6.43 -3.67 -0.02 1.61 16 25 C -0.10 -1.06 5.83 -26.45 -0.15 -1.21 16 26 C 0.13 1.03 3.17 -67.93 -0.22 0.82 16 27 C -0.17 -1.04 8.14 37.16 0.30 -0.74 16 28 C -0.17 -1.39 9.17 37.16 0.34 -1.04 16 29 H 0.06 0.56 8.14 -51.93 -0.42 0.13 16 30 H 0.06 0.42 8.14 -51.93 -0.42 0.00 16 31 H 0.06 0.43 5.44 -51.93 -0.28 0.14 16 32 H 0.08 0.59 6.43 -51.93 -0.33 0.25 16 33 H 0.08 0.89 7.42 -51.93 -0.39 0.50 16 34 H 0.11 1.23 7.81 -51.93 -0.41 0.83 16 35 H 0.10 0.87 8.14 -51.93 -0.42 0.45 16 36 H 0.07 1.00 7.23 -51.93 -0.38 0.63 16 37 H 0.07 0.99 7.33 -51.93 -0.38 0.61 16 38 H 0.06 0.85 8.14 -51.93 -0.42 0.43 16 39 H 0.10 1.63 5.86 -51.93 -0.30 1.32 16 40 H 0.05 1.18 7.74 -51.93 -0.40 0.77 16 41 H 0.05 1.20 7.87 -51.93 -0.41 0.79 16 42 H 0.26 7.25 8.31 -40.82 -0.34 6.91 16 43 H 0.06 0.75 8.14 -51.93 -0.42 0.33 16 44 H 0.09 1.46 6.97 -51.93 -0.36 1.09 16 45 H 0.07 0.63 8.10 -51.93 -0.42 0.21 16 46 H 0.07 0.86 8.14 -51.93 -0.42 0.44 16 47 H 0.10 0.76 5.89 -51.93 -0.31 0.46 16 48 H 0.06 0.39 6.17 -51.93 -0.32 0.07 16 49 H 0.07 0.36 8.14 -51.93 -0.42 -0.06 16 50 H 0.06 0.38 8.14 -51.93 -0.42 -0.05 16 51 H 0.07 0.68 7.23 -51.93 -0.38 0.31 16 52 H 0.07 0.53 8.14 -51.93 -0.42 0.11 16 53 H 0.06 0.46 6.66 -51.93 -0.35 0.11 16 LS Contribution 407.60 15.07 6.14 6.14 Total: -1.00 -33.66 407.60 -9.13 -42.79 By element: Atomic # 1 Polarization: 9.27 SS G_CDS: -9.10 Total: 0.17 kcal Atomic # 6 Polarization: 0.36 SS G_CDS: -1.16 Total: -0.80 kcal Atomic # 7 Polarization: -43.00 SS G_CDS: -0.17 Total: -43.17 kcal Atomic # 8 Polarization: -22.38 SS G_CDS: 0.17 Total: -22.21 kcal Atomic # 14 Polarization: 22.09 SS G_CDS: -5.02 Total: 17.07 kcal Total LS contribution 6.14 Total: 6.14 kcal Total: -33.66 -9.13 -42.79 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. ZINC001269024703.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 -13.776 kcal (2) G-P(sol) polarization free energy of solvation -33.662 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -47.438 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -9.130 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -42.792 kcal (6) G-S(sol) free energy of system = (1) + (5) -56.568 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.88 seconds