Wall clock time and date at job start Sat Apr 11 2020 06:08:09 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 1.31003 * 1 3 3 C 1.50699 * 120.00201 * 2 1 4 4 C 1.50704 * 119.99810 * 179.72457 * 2 1 3 5 5 N 1.46896 * 109.46699 * 95.66918 * 4 2 1 6 6 C 1.44308 * 110.99456 * 166.85674 * 5 4 2 7 7 C 1.53992 * 108.31260 * 221.35348 * 6 5 4 8 8 C 1.45874 * 112.66452 * 278.59415 * 7 6 5 9 9 H 1.08998 * 109.04203 * 300.93484 * 8 7 6 10 10 N 1.46498 * 108.98191 * 182.02013 * 8 7 6 11 11 C 1.34783 * 119.99941 * 82.87349 * 10 8 7 12 12 O 1.21281 * 119.99927 * 0.02562 * 11 10 8 13 13 C 1.50700 * 119.99981 * 180.02562 * 11 10 8 14 14 S 1.81000 * 109.47045 * 179.97438 * 13 11 10 15 15 C 1.76198 * 100.00156 * 179.97438 * 14 13 11 16 16 H 1.08006 * 119.99851 * 359.97438 * 15 14 13 17 17 C 1.38797 * 120.00240 * 179.97438 * 15 14 13 18 18 N 1.31627 * 119.99672 * 0.02562 * 17 15 14 19 19 Si 1.86797 * 119.99797 * 180.02562 * 17 15 14 20 20 H 1.48501 * 109.47118 * 90.00666 * 19 17 15 21 21 H 1.48505 * 109.46881 * 209.99819 * 19 17 15 22 22 H 1.48493 * 109.47542 * 329.99843 * 19 17 15 23 23 C 1.54519 * 111.67121 * 61.49502 * 8 7 6 24 24 C 1.50535 * 108.86829 * 282.76902 * 23 8 7 25 25 C 1.52999 * 108.78741 * 330.85615 * 24 23 8 26 26 C 1.52998 * 108.79099 * 212.63976 * 24 23 8 27 27 C 1.47943 * 111.00445 * 294.26690 * 5 4 2 28 28 H 1.08007 * 119.99652 * 359.97438 * 1 2 3 29 29 H 1.07995 * 120.00279 * 180.02562 * 1 2 3 30 30 H 1.08999 * 109.46924 * 84.95531 * 3 2 1 31 31 H 1.08992 * 109.47194 * 204.95829 * 3 2 1 32 32 H 1.08998 * 109.46738 * 324.96224 * 3 2 1 33 33 H 1.08996 * 109.47003 * 215.67096 * 4 2 1 34 34 H 1.09002 * 109.46943 * 335.67125 * 4 2 1 35 35 H 1.09000 * 109.69844 * 341.05179 * 6 5 4 36 36 H 1.08993 * 109.69673 * 101.64939 * 6 5 4 37 37 H 1.09000 * 108.84090 * 157.77203 * 7 6 5 38 38 H 1.08994 * 108.84365 * 39.41332 * 7 6 5 39 39 H 0.96996 * 120.00510 * 262.87095 * 10 8 7 40 40 H 1.09000 * 109.46924 * 299.99593 * 13 11 10 41 41 H 1.09000 * 109.47456 * 59.99518 * 13 11 10 42 42 H 0.97005 * 119.99908 * 179.97438 * 18 17 15 43 43 H 1.08995 * 109.57521 * 162.94918 * 23 8 7 44 44 H 1.09001 * 109.67336 * 42.64542 * 23 8 7 45 45 H 1.09000 * 109.47009 * 166.92725 * 25 24 23 46 46 H 1.09007 * 109.47121 * 286.92510 * 25 24 23 47 47 H 1.09004 * 109.47254 * 46.92652 * 25 24 23 48 48 H 1.09000 * 109.47349 * 296.59404 * 26 24 23 49 49 H 1.09007 * 109.46807 * 56.59154 * 26 24 23 50 50 H 1.08998 * 109.47598 * 176.58687 * 26 24 23 51 51 H 1.08995 * 108.70875 * 313.18437 * 27 5 4 52 52 H 1.08999 * 108.70892 * 71.19432 * 27 5 4 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 1.3100 0.0000 0.0000 3 6 2.0636 1.3051 0.0000 4 6 2.0635 -1.3051 0.0063 5 7 2.4268 -1.6673 -1.3702 6 6 3.3997 -2.7330 -1.3848 7 6 4.4460 -2.4181 -2.4699 8 6 3.9978 -2.7895 -3.8075 9 1 3.7820 -3.8578 -3.8264 10 7 5.0678 -2.5013 -4.7657 11 6 6.0684 -3.3864 -4.9449 12 8 6.0826 -4.4216 -4.3133 13 6 7.1694 -3.0896 -5.9302 14 16 8.3536 -4.4584 -5.9420 15 6 9.4967 -3.8639 -7.1438 16 1 9.3324 -2.9079 -7.6188 17 6 10.6082 -4.6240 -7.4802 18 7 10.8081 -5.7893 -6.9016 19 14 11.8204 -3.9932 -8.7538 20 1 12.8776 -3.1977 -8.0796 21 1 12.4406 -5.1435 -9.4591 22 1 11.1067 -3.1373 -9.7352 23 6 2.7283 -2.0115 -4.2205 24 6 1.5377 -2.6206 -3.5294 25 6 1.8127 -4.1068 -3.2921 26 6 0.3170 -2.4882 -4.4422 27 6 1.2214 -1.9532 -2.1790 28 1 -0.5400 0.9354 0.0004 29 1 -0.5400 -0.9352 0.0004 30 1 2.1670 1.6649 1.0237 31 1 3.0520 1.1539 -0.4336 32 1 1.5165 2.0404 -0.5900 33 1 2.9681 -1.1995 0.6050 34 1 1.4342 -2.0859 0.4334 35 1 3.8875 -2.7985 -0.4123 36 1 2.9064 -3.6777 -1.6133 37 1 5.3633 -2.9611 -2.2425 38 1 4.6588 -1.3493 -2.4541 39 1 5.0562 -1.6736 -5.2712 40 1 6.7430 -2.9691 -6.9261 41 1 7.6792 -2.1710 -5.6397 42 1 11.5848 -6.3207 -7.1369 43 1 2.5958 -2.0755 -5.3004 44 1 2.8262 -0.9666 -3.9261 45 1 1.0746 -4.5064 -2.5967 46 1 1.7484 -4.6439 -4.2385 47 1 2.8112 -4.2291 -2.8722 48 1 0.0907 -1.4331 -4.5957 49 1 0.5290 -2.9578 -5.4029 50 1 -0.5384 -2.9796 -3.9787 51 1 0.5657 -2.6112 -1.6088 52 1 0.6959 -1.0168 -2.3663 RHF calculation, no. of doubly occupied orbitals= 63 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). S: (AM1): M.J.S. DEWAR, Y.-C. YUAN, INORGANIC CHEM., 29, 589 (1990) 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 ZINC001750943319.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 06:08:09 Heat of formation + Delta-G solvation = 0.892424 kcal Electronic energy + Delta-G solvation = -28298.159053 eV Core-core repulsion = 24617.988364 eV Total energy + Delta-G solvation = -3680.170689 eV No. of doubly occupied orbitals = 63 Molecular weight (most abundant/longest-lived isotopes) = 340.193 amu Computer time = 0.91 seconds Orbital eigenvalues (eV) -40.95346 -38.84956 -37.05690 -34.87651 -34.36295 -32.40804 -31.81877 -29.20791 -27.85039 -27.62264 -27.44868 -27.23561 -25.48047 -24.99816 -22.80939 -20.63926 -20.07683 -18.96669 -18.68083 -17.76451 -16.79981 -16.47682 -15.81722 -15.57875 -15.22739 -15.05919 -14.78584 -14.65572 -14.31146 -14.21873 -13.95235 -13.54459 -13.36982 -13.30247 -13.11360 -13.00243 -12.60188 -12.50432 -12.45666 -12.18325 -11.97859 -11.92414 -11.72539 -11.58002 -11.30387 -11.06483 -11.04170 -11.00013 -10.99539 -10.79276 -10.72365 -10.54663 -9.98170 -9.78114 -9.39804 -9.28599 -9.04794 -8.76861 -8.35036 -8.20257 -6.46882 -6.19610 -3.89551 1.85839 3.08836 3.18243 3.23765 3.29599 3.34544 3.69094 3.82232 4.22771 4.34606 4.46951 4.53298 4.57980 4.68240 4.88935 5.00833 5.05107 5.12258 5.15515 5.19986 5.21899 5.28464 5.33746 5.36269 5.38955 5.42100 5.45381 5.50208 5.53450 5.59886 5.63735 5.66209 5.69167 5.72817 5.74707 5.88316 5.93882 5.95218 6.06673 6.07342 6.14284 6.19142 6.22778 6.27930 6.46395 6.51968 6.80943 6.87167 7.04578 7.61736 7.83361 8.37424 8.71066 9.25779 10.87799 Molecular weight = 340.19amu Principal moments of inertia in cm(-1) A = 0.021541 B = 0.002154 C = 0.002085 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1299.519639 B =12998.084023 C =13423.229272 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.200 4.200 2 C -0.108 4.108 3 C -0.115 4.115 4 C 0.091 3.909 5 N -0.539 5.539 6 C 0.045 3.955 7 C -0.127 4.127 8 C 0.136 3.864 9 H 0.098 0.902 10 N -0.736 5.736 11 C 0.532 3.468 12 O -0.520 6.520 13 C -0.154 4.154 14 S -0.061 6.061 15 C -0.535 4.535 16 H 0.072 0.928 17 C 0.073 3.927 18 N -0.868 5.868 19 Si 0.918 3.082 20 H -0.277 1.277 21 H -0.282 1.282 22 H -0.272 1.272 23 C -0.107 4.107 24 C -0.059 4.059 25 C -0.180 4.180 26 C -0.140 4.140 27 C 0.076 3.924 28 H 0.097 0.903 29 H 0.093 0.907 30 H 0.063 0.937 31 H 0.069 0.931 32 H 0.060 0.940 33 H 0.081 0.919 34 H 0.037 0.963 35 H 0.067 0.933 36 H 0.069 0.931 37 H 0.070 0.930 38 H 0.071 0.929 39 H 0.395 0.605 40 H 0.088 0.912 41 H 0.088 0.912 42 H 0.268 0.732 43 H 0.068 0.932 44 H 0.077 0.923 45 H 0.050 0.950 46 H 0.060 0.940 47 H 0.093 0.907 48 H 0.056 0.944 49 H 0.060 0.940 50 H 0.053 0.947 51 H 0.031 0.969 52 H 0.073 0.927 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -23.635 12.365 11.845 29.185 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 -0.238 4.238 2 C -0.108 4.108 3 C -0.172 4.172 4 C -0.036 4.036 5 N -0.264 5.264 6 C -0.083 4.083 7 C -0.166 4.166 8 C 0.032 3.968 9 H 0.116 0.884 10 N -0.389 5.389 11 C 0.318 3.682 12 O -0.395 6.395 13 C -0.304 4.304 14 S 0.166 5.834 15 C -0.683 4.683 16 H 0.090 0.910 17 C -0.136 4.136 18 N -0.503 5.503 19 Si 0.745 3.255 20 H -0.203 1.203 21 H -0.208 1.208 22 H -0.197 1.197 23 C -0.145 4.145 24 C -0.060 4.060 25 C -0.236 4.236 26 C -0.197 4.197 27 C -0.051 4.051 28 H 0.115 0.885 29 H 0.111 0.889 30 H 0.082 0.918 31 H 0.088 0.912 32 H 0.079 0.921 33 H 0.099 0.901 34 H 0.055 0.945 35 H 0.086 0.914 36 H 0.087 0.913 37 H 0.089 0.911 38 H 0.089 0.911 39 H 0.229 0.771 40 H 0.106 0.894 41 H 0.106 0.894 42 H 0.078 0.922 43 H 0.087 0.913 44 H 0.095 0.905 45 H 0.069 0.931 46 H 0.079 0.921 47 H 0.111 0.889 48 H 0.075 0.925 49 H 0.079 0.921 50 H 0.072 0.928 51 H 0.049 0.951 52 H 0.092 0.908 Dipole moment (debyes) X Y Z Total from point charges -23.260 10.827 12.702 28.629 hybrid contribution 0.335 1.391 -1.434 2.026 sum -22.925 12.218 11.268 28.317 Atomic orbital electron populations 1.23685 0.95331 1.01645 1.03112 1.21686 0.94981 0.95787 0.98382 1.20792 1.00800 0.94083 1.01522 1.21226 0.99252 0.93578 0.89567 1.60649 1.13281 1.41612 1.10813 1.22247 0.93388 0.93647 0.99065 1.20884 0.98673 1.02883 0.94140 1.20258 0.86084 1.01844 0.88564 0.88448 1.46208 1.25428 1.23093 1.44194 1.20273 0.82028 0.83167 0.82691 1.90682 1.76018 1.25324 1.47478 1.23537 0.99636 1.06998 1.00256 1.85366 1.21731 1.21264 1.55058 1.22874 1.10704 1.08062 1.26646 0.90975 1.24991 0.97288 0.94639 0.96715 1.70021 1.28183 1.11054 1.41064 0.86173 0.80402 0.78399 0.80556 1.20285 1.20777 1.19711 1.21623 0.92662 1.00418 0.99843 1.20200 0.95745 0.95565 0.94445 1.22865 1.03251 0.95151 1.02328 1.21943 0.96875 1.01805 0.99119 1.22495 0.90649 0.99492 0.92490 0.88498 0.88894 0.91839 0.91198 0.92091 0.90072 0.94467 0.91403 0.91298 0.91115 0.91062 0.77118 0.89373 0.89352 0.92227 0.91332 0.90464 0.93054 0.92126 0.88932 0.92484 0.92106 0.92758 0.95087 0.90829 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 -0.20 -1.36 12.85 29.01 0.37 -0.98 16 2 C -0.11 -0.80 4.94 -101.07 -0.50 -1.30 16 3 C -0.12 -0.78 10.02 36.01 0.36 -0.42 16 4 C 0.09 0.71 5.00 -4.98 -0.02 0.69 16 5 N -0.54 -4.68 3.99 -236.08 -0.94 -5.63 16 6 C 0.04 0.44 5.36 -4.69 -0.03 0.41 16 7 C -0.13 -1.49 4.79 -29.59 -0.14 -1.63 16 8 C 0.14 1.63 1.89 -70.51 -0.13 1.50 16 9 H 0.10 1.35 4.43 -51.93 -0.23 1.12 16 10 N -0.74 -10.01 5.02 -56.34 -0.28 -10.29 16 11 C 0.53 9.94 7.65 -10.98 -0.08 9.86 16 12 O -0.52 -11.67 15.20 5.56 0.08 -11.59 16 13 C -0.15 -3.13 6.16 36.01 0.22 -2.91 16 14 S -0.06 -1.66 20.57 -107.50 -2.21 -3.87 16 15 C -0.53 -15.34 9.50 30.94 0.29 -15.04 16 16 H 0.07 1.96 7.80 -52.48 -0.41 1.55 16 17 C 0.07 2.09 5.49 -17.43 -0.10 2.00 16 18 N -0.87 -26.31 13.22 55.49 0.73 -25.57 16 19 Si 0.92 21.54 29.55 -169.99 -5.02 16.52 16 20 H -0.28 -6.37 7.11 56.52 0.40 -5.97 16 21 H -0.28 -6.51 7.11 56.52 0.40 -6.11 16 22 H -0.27 -6.20 7.11 56.52 0.40 -5.80 16 23 C -0.11 -1.01 4.44 -27.17 -0.12 -1.13 16 24 C -0.06 -0.49 0.71 -155.26 -0.11 -0.60 16 25 C -0.18 -1.67 6.38 37.16 0.24 -1.44 16 26 C -0.14 -1.02 8.01 37.16 0.30 -0.72 16 27 C 0.08 0.62 3.73 -2.77 -0.01 0.61 16 28 H 0.10 0.58 8.05 -52.48 -0.42 0.16 16 29 H 0.09 0.61 7.99 -52.49 -0.42 0.19 16 30 H 0.06 0.38 8.14 -51.93 -0.42 -0.04 16 31 H 0.07 0.53 8.09 -51.93 -0.42 0.11 16 32 H 0.06 0.39 8.10 -51.93 -0.42 -0.03 16 33 H 0.08 0.62 7.69 -51.93 -0.40 0.22 16 34 H 0.04 0.29 7.81 -51.93 -0.41 -0.12 16 35 H 0.07 0.63 7.35 -51.93 -0.38 0.25 16 36 H 0.07 0.68 4.09 -51.93 -0.21 0.47 16 37 H 0.07 1.03 7.67 -51.93 -0.40 0.63 16 38 H 0.07 0.84 8.08 -51.93 -0.42 0.42 16 39 H 0.40 4.35 8.59 -40.82 -0.35 4.00 16 40 H 0.09 1.67 8.14 -51.92 -0.42 1.25 16 41 H 0.09 1.67 8.14 -51.92 -0.42 1.25 16 42 H 0.27 7.54 8.31 -40.82 -0.34 7.20 16 43 H 0.07 0.63 7.64 -51.93 -0.40 0.24 16 44 H 0.08 0.73 7.79 -51.93 -0.40 0.32 16 45 H 0.05 0.43 7.73 -51.93 -0.40 0.03 16 46 H 0.06 0.59 8.04 -51.93 -0.42 0.18 16 47 H 0.09 0.99 2.80 -51.93 -0.15 0.85 16 48 H 0.06 0.38 8.11 -51.93 -0.42 -0.04 16 49 H 0.06 0.46 7.99 -51.93 -0.41 0.04 16 50 H 0.05 0.37 8.14 -51.93 -0.42 -0.06 16 51 H 0.03 0.25 7.47 -51.93 -0.39 -0.13 16 52 H 0.07 0.61 6.94 -51.93 -0.36 0.25 16 LS Contribution 406.95 15.07 6.13 6.13 Total: -1.00 -32.94 406.95 -10.04 -42.98 By element: Atomic # 1 Polarization: 11.50 SS G_CDS: -9.07 Total: 2.44 kcal Atomic # 6 Polarization: -11.65 SS G_CDS: 0.54 Total: -11.11 kcal Atomic # 7 Polarization: -41.00 SS G_CDS: -0.49 Total: -41.49 kcal Atomic # 8 Polarization: -11.67 SS G_CDS: 0.08 Total: -11.59 kcal Atomic # 14 Polarization: 21.54 SS G_CDS: -5.02 Total: 16.52 kcal Atomic # 16 Polarization: -1.66 SS G_CDS: -2.21 Total: -3.87 kcal Total LS contribution 6.13 Total: 6.13 kcal Total: -32.94 -10.04 -42.98 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. ZINC001750943319.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 43.871 kcal (2) G-P(sol) polarization free energy of solvation -32.942 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system 10.929 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -10.036 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -42.978 kcal (6) G-S(sol) free energy of system = (1) + (5) 0.892 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.91 seconds