Wall clock time and date at job start Tue Mar 31 2020 21:46:39 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 1.52998 * 1 3 3 N 1.46498 * 109.47105 * 2 1 4 4 C 1.46504 * 119.99991 * 269.99892 * 3 2 1 5 5 C 1.50694 * 109.47473 * 270.00192 * 4 3 2 6 6 H 1.08006 * 119.99884 * 0.02562 * 5 4 3 7 7 C 1.37873 * 120.00331 * 179.97438 * 5 4 3 8 8 N 1.31518 * 119.99792 * 359.97438 * 7 5 4 9 9 Si 1.86803 * 120.00389 * 179.97438 * 7 5 4 10 10 H 1.48503 * 109.46897 * 60.00259 * 9 7 5 11 11 H 1.48503 * 109.47333 * 179.97438 * 9 7 5 12 12 H 1.48501 * 109.47166 * 300.00188 * 9 7 5 13 13 C 1.34776 * 120.00290 * 90.00494 * 3 2 1 14 14 O 1.21282 * 119.99837 * 180.02562 * 13 3 2 15 15 C 1.50697 * 119.99767 * 359.97438 * 13 3 2 16 16 N 1.46901 * 109.46943 * 180.02562 * 15 13 3 17 17 C 1.46905 * 110.99870 * 180.02562 * 16 15 13 18 18 H 1.09001 * 112.81576 * 25.33262 * 17 16 15 19 19 C 1.53831 * 113.57171 * 254.26844 * 17 16 15 20 20 H 1.09006 * 116.29480 * 150.40265 * 19 17 16 21 21 C 1.54391 * 112.96886 * 13.05348 * 19 17 16 22 22 C 1.54446 * 104.24876 * 266.54834 * 21 19 17 23 23 O 1.44370 * 104.80677 * 24.33792 * 22 21 19 24 24 C 1.44270 * 105.50269 * 319.53361 * 23 22 21 25 25 H 1.09007 * 114.88043 * 269.74423 * 24 23 22 26 26 C 1.52939 * 113.60659 * 133.08189 * 24 23 22 27 27 C 1.53647 * 114.99831 * 36.08053 * 26 24 23 28 28 C 1.55041 * 103.99056 * 106.57259 * 27 26 24 29 29 C 1.54943 * 102.84513 * 37.38347 * 28 27 26 30 30 C 1.53208 * 115.31536 * 161.81432 * 26 24 23 31 31 H 1.09001 * 109.46734 * 299.99636 * 1 2 3 32 32 H 1.08992 * 109.47153 * 59.99893 * 1 2 3 33 33 H 1.09000 * 109.47130 * 180.02562 * 1 2 3 34 34 H 1.09002 * 109.46906 * 239.99837 * 2 1 3 35 35 H 1.09002 * 109.47667 * 120.00186 * 2 1 3 36 36 H 1.08999 * 109.47061 * 30.00401 * 4 3 2 37 37 H 1.08996 * 109.47411 * 149.99808 * 4 3 2 38 38 H 0.96997 * 119.99699 * 179.97438 * 8 7 5 39 39 H 1.09004 * 109.46763 * 60.00720 * 15 13 3 40 40 H 1.08995 * 109.47483 * 300.00377 * 15 13 3 41 41 H 1.00901 * 111.00067 * 303.95401 * 16 15 13 42 42 H 1.09002 * 110.45246 * 147.84913 * 21 19 17 43 43 H 1.09001 * 110.56289 * 25.30093 * 21 19 17 44 44 H 1.08998 * 110.37523 * 265.50214 * 22 21 19 45 45 H 1.08998 * 110.46685 * 143.21171 * 22 21 19 46 46 H 1.09003 * 110.51817 * 225.19376 * 27 26 24 47 47 H 1.08998 * 110.52601 * 347.93792 * 27 26 24 48 48 H 1.09008 * 110.73760 * 279.04001 * 28 27 26 49 49 H 1.09005 * 110.74001 * 155.72445 * 28 27 26 50 50 H 1.08994 * 110.48554 * 203.71122 * 29 28 27 51 51 H 1.09002 * 110.47986 * 81.07763 * 29 28 27 52 52 H 1.09006 * 110.08881 * 349.44377 * 30 26 24 53 53 H 1.08997 * 110.08956 * 111.02374 * 30 26 24 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 2.2625 2.0718 -1.2688 5 6 3.6857 1.8350 -1.7038 6 1 4.3426 1.2302 -1.0963 7 6 4.1490 2.3896 -2.8780 8 7 3.3487 3.1249 -3.6187 9 14 5.9134 2.0967 -3.4170 10 1 6.1416 0.6400 -3.5938 11 1 6.1605 2.7956 -4.7038 12 1 6.8406 2.6210 -2.3823 13 6 2.2430 2.0166 1.1672 14 8 2.6469 3.1602 1.1671 15 6 1.9914 1.3063 2.4722 16 7 2.3093 2.2065 3.5888 17 6 2.0760 1.5462 4.8802 18 1 2.1484 0.4604 4.8189 19 6 0.8105 2.0385 5.6031 20 1 0.3117 1.3162 6.2493 21 6 -0.1147 2.8766 4.6947 22 6 0.3194 4.3361 4.9529 23 8 1.6841 4.2391 5.4140 24 6 1.7132 3.0968 6.2947 25 1 1.5094 3.3199 7.3421 26 6 2.8841 2.1492 6.0302 27 6 4.1941 2.8360 5.6144 28 6 5.0954 2.7159 6.8702 29 6 4.7372 1.3115 7.4181 30 6 3.2175 1.1848 7.1731 31 1 -0.3633 0.5138 0.8900 32 1 -0.3633 0.5138 -0.8899 33 1 -0.3633 -1.0277 0.0005 34 1 1.8933 -0.5139 -0.8900 35 1 1.8934 -0.5139 0.8900 36 1 1.5817 1.6877 -2.0284 37 1 2.0955 3.1410 -1.1385 38 1 3.6747 3.5153 -4.4445 39 1 2.6214 0.4187 2.5301 40 1 0.9434 1.0125 2.5299 41 1 3.2576 2.5446 3.5220 42 1 -1.1577 2.7331 4.9772 43 1 0.0358 2.6133 3.6477 44 1 -0.3089 4.7889 5.7199 45 1 0.2706 4.9170 4.0319 46 1 4.6458 2.3173 4.7688 47 1 4.0159 3.8833 5.3706 48 1 4.8483 3.4888 7.5980 49 1 6.1490 2.7658 6.5954 50 1 4.9581 1.2501 8.4837 51 1 5.2775 0.5393 6.8705 52 1 2.6686 1.4655 8.0720 53 1 2.9686 0.1633 6.8856 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 ZINC000450862271.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 21:46:39 Heat of formation + Delta-G solvation = -50.815600 kcal Electronic energy + Delta-G solvation = -31297.070215 eV Core-core repulsion = 27362.360478 eV Total energy + Delta-G solvation = -3934.709737 eV No. of doubly occupied orbitals = 65 Molecular weight (most abundant/longest-lived isotopes) = 336.220 amu Computer time = 0.81 seconds Orbital eigenvalues (eV) -41.51426 -38.96097 -37.37504 -35.45681 -34.95123 -32.92978 -32.48286 -30.91278 -30.05892 -28.90382 -27.80883 -26.39226 -25.84328 -23.63224 -22.98106 -22.63489 -22.16974 -20.82724 -20.10485 -18.60968 -18.00539 -16.75230 -16.56212 -16.40694 -16.10399 -15.81091 -15.40667 -15.30951 -14.85097 -14.47175 -14.18861 -13.89237 -13.51657 -13.42641 -13.34811 -13.22810 -12.81157 -12.71532 -12.50432 -12.17732 -11.97890 -11.88412 -11.69953 -11.51166 -11.29355 -11.20257 -11.15257 -10.99638 -10.93539 -10.88562 -10.74325 -10.71133 -10.63683 -10.49226 -10.34072 -10.10425 -9.90626 -9.61915 -9.42826 -8.80372 -8.40684 -8.16915 -7.60318 -6.01599 -4.06323 3.32842 3.37519 3.39682 3.51607 3.63005 3.81223 4.17109 4.22183 4.40516 4.47038 4.65292 4.69472 4.79625 4.96263 5.03513 5.14837 5.21278 5.26954 5.30469 5.32118 5.32866 5.37211 5.39086 5.47605 5.50135 5.53029 5.58492 5.59243 5.67325 5.68196 5.71273 5.79844 5.83640 5.86470 5.96109 5.99187 6.04901 6.06538 6.20284 6.24800 6.28999 6.36251 6.39692 6.49693 6.96828 7.08208 7.23433 7.49343 7.56404 7.60858 7.95323 8.27108 8.49363 8.93719 9.18252 9.58813 11.06375 Molecular weight = 336.22amu Principal moments of inertia in cm(-1) A = 0.012873 B = 0.003264 C = 0.002965 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 2174.598351 B = 8576.488648 C = 9441.120189 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.168 4.168 2 C 0.107 3.893 3 N -0.600 5.600 4 C 0.249 3.751 5 C -0.526 4.526 6 H 0.055 0.945 7 C 0.061 3.939 8 N -0.895 5.895 9 Si 0.897 3.103 10 H -0.278 1.278 11 H -0.286 1.286 12 H -0.277 1.277 13 C 0.504 3.496 14 O -0.525 6.525 15 C 0.040 3.960 16 N -0.641 5.641 17 C 0.086 3.914 18 H 0.058 0.942 19 C -0.136 4.136 20 H 0.103 0.897 21 C -0.133 4.133 22 C 0.062 3.938 23 O -0.340 6.340 24 C 0.068 3.932 25 H 0.081 0.919 26 C -0.082 4.082 27 C -0.110 4.110 28 C -0.123 4.123 29 C -0.124 4.124 30 C -0.098 4.098 31 H 0.050 0.950 32 H 0.061 0.939 33 H 0.058 0.942 34 H 0.081 0.919 35 H 0.061 0.939 36 H 0.030 0.970 37 H 0.043 0.957 38 H 0.263 0.737 39 H 0.050 0.950 40 H 0.091 0.909 41 H 0.358 0.642 42 H 0.059 0.941 43 H 0.090 0.910 44 H 0.044 0.956 45 H 0.090 0.910 46 H 0.064 0.936 47 H 0.084 0.916 48 H 0.065 0.935 49 H 0.064 0.936 50 H 0.063 0.937 51 H 0.064 0.936 52 H 0.068 0.932 53 H 0.067 0.933 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -5.786 -6.999 22.512 24.274 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 -0.227 4.227 2 C -0.017 4.017 3 N -0.333 5.333 4 C 0.129 3.871 5 C -0.565 4.565 6 H 0.073 0.927 7 C -0.140 4.140 8 N -0.534 5.534 9 Si 0.725 3.275 10 H -0.203 1.203 11 H -0.212 1.212 12 H -0.202 1.202 13 C 0.289 3.711 14 O -0.401 6.401 15 C -0.092 4.092 16 N -0.276 5.276 17 C -0.025 4.025 18 H 0.076 0.924 19 C -0.156 4.156 20 H 0.121 0.879 21 C -0.171 4.171 22 C -0.015 4.015 23 O -0.258 6.258 24 C 0.009 3.991 25 H 0.098 0.902 26 C -0.083 4.083 27 C -0.148 4.148 28 C -0.161 4.161 29 C -0.161 4.161 30 C -0.135 4.135 31 H 0.069 0.931 32 H 0.080 0.920 33 H 0.077 0.923 34 H 0.099 0.901 35 H 0.080 0.920 36 H 0.048 0.952 37 H 0.061 0.939 38 H 0.073 0.927 39 H 0.067 0.933 40 H 0.110 0.890 41 H 0.182 0.818 42 H 0.077 0.923 43 H 0.109 0.891 44 H 0.063 0.937 45 H 0.109 0.891 46 H 0.083 0.917 47 H 0.103 0.897 48 H 0.084 0.916 49 H 0.083 0.917 50 H 0.082 0.918 51 H 0.083 0.917 52 H 0.086 0.914 53 H 0.086 0.914 Dipole moment (debyes) X Y Z Total from point charges -5.989 -5.798 22.206 23.719 hybrid contribution 1.386 -1.060 -0.401 1.790 sum -4.603 -6.858 21.805 23.317 Atomic orbital electron populations 1.22218 0.96865 1.01276 1.02333 1.21385 0.93467 0.84413 1.02453 1.48249 1.64193 1.13131 1.07726 1.19220 0.96066 0.93644 0.78127 1.21398 0.97005 1.31876 1.06207 0.92667 1.24926 0.97761 0.94954 0.96409 1.69924 1.35675 1.33441 1.14339 0.86580 0.84932 0.78179 0.77835 1.20322 1.21171 1.20206 1.20172 0.78965 0.87108 0.84823 1.90690 1.44876 1.17620 1.86877 1.21994 1.02028 0.94383 0.90823 1.59925 1.33243 1.35944 0.98463 1.22417 0.95369 0.95595 0.89094 0.92413 1.24187 0.95226 0.98514 0.97651 0.87937 1.22660 0.97504 0.94781 1.02108 1.23257 0.82860 0.96622 0.98759 1.89039 1.27376 1.46376 1.63002 1.23894 0.96008 0.85787 0.93387 0.90174 1.22218 0.94651 0.95654 0.95755 1.22143 0.93395 1.02062 0.97183 1.22513 0.99452 0.96623 0.97517 1.22401 0.95428 0.97707 1.00609 1.21834 0.96439 0.98355 0.96914 0.93090 0.92028 0.92308 0.90074 0.92024 0.95183 0.93927 0.92695 0.93262 0.89047 0.81831 0.92266 0.89122 0.93749 0.89148 0.91713 0.89704 0.91578 0.91681 0.91783 0.91684 0.91369 0.91381 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 -2.25 10.24 37.16 0.38 -1.86 16 2 C 0.11 1.71 5.93 -4.04 -0.02 1.68 16 3 N -0.60 -12.62 2.46 -175.06 -0.43 -13.05 16 4 C 0.25 6.54 5.16 -5.19 -0.03 6.51 16 5 C -0.53 -15.02 9.39 -34.44 -0.32 -15.34 16 6 H 0.06 1.57 7.81 -52.48 -0.41 1.16 16 7 C 0.06 1.77 5.46 -17.82 -0.10 1.68 16 8 N -0.89 -26.84 13.29 55.43 0.74 -26.10 16 9 Si 0.90 22.05 29.54 -169.99 -5.02 17.03 16 10 H -0.28 -6.60 7.11 56.52 0.40 -6.20 16 11 H -0.29 -6.92 7.11 56.52 0.40 -6.52 16 12 H -0.28 -6.84 7.11 56.52 0.40 -6.44 16 13 C 0.50 10.45 7.71 -10.99 -0.08 10.36 16 14 O -0.52 -13.34 15.78 5.56 0.09 -13.25 16 15 C 0.04 0.60 4.12 -4.98 -0.02 0.58 16 16 N -0.64 -9.33 3.88 -107.56 -0.42 -9.75 16 17 C 0.09 0.97 3.61 -67.30 -0.24 0.73 16 18 H 0.06 0.61 7.58 -51.93 -0.39 0.22 16 19 C -0.14 -1.39 4.98 -88.22 -0.44 -1.83 16 20 H 0.10 0.85 8.14 -51.93 -0.42 0.42 16 21 C -0.13 -1.51 6.26 -25.24 -0.16 -1.66 16 22 C 0.06 0.77 7.62 37.92 0.29 1.06 16 23 O -0.34 -4.80 9.43 -35.23 -0.33 -5.13 16 24 C 0.07 0.75 4.75 -25.52 -0.12 0.63 16 25 H 0.08 0.79 8.01 -51.92 -0.42 0.38 16 26 C -0.08 -0.85 1.03 -154.12 -0.16 -1.01 16 27 C -0.11 -1.28 4.93 -25.32 -0.12 -1.41 16 28 C -0.12 -1.17 6.91 -24.63 -0.17 -1.34 16 29 C -0.12 -1.01 6.84 -24.94 -0.17 -1.18 16 30 C -0.10 -0.80 6.18 -25.86 -0.16 -0.96 16 31 H 0.05 0.65 7.22 -51.93 -0.37 0.27 16 32 H 0.06 0.92 8.14 -51.93 -0.42 0.49 16 33 H 0.06 0.62 8.14 -51.93 -0.42 0.20 16 34 H 0.08 1.36 8.07 -51.93 -0.42 0.94 16 35 H 0.06 0.82 6.44 -51.93 -0.33 0.48 16 36 H 0.03 0.80 8.07 -51.93 -0.42 0.38 16 37 H 0.04 1.28 7.42 -51.93 -0.39 0.89 16 38 H 0.26 7.48 8.31 -40.82 -0.34 7.14 16 39 H 0.05 0.67 7.39 -51.93 -0.38 0.29 16 40 H 0.09 1.21 6.55 -51.93 -0.34 0.87 16 41 H 0.36 5.86 5.95 -39.29 -0.23 5.62 16 42 H 0.06 0.56 8.14 -51.93 -0.42 0.14 16 43 H 0.09 1.23 5.99 -51.93 -0.31 0.92 16 44 H 0.04 0.47 8.14 -51.93 -0.42 0.05 16 45 H 0.09 1.23 8.14 -51.93 -0.42 0.81 16 46 H 0.06 0.81 7.06 -51.93 -0.37 0.44 16 47 H 0.08 1.17 7.04 -51.93 -0.37 0.80 16 48 H 0.07 0.61 8.14 -51.92 -0.42 0.19 16 49 H 0.06 0.60 8.14 -51.93 -0.42 0.18 16 50 H 0.06 0.45 8.14 -51.93 -0.42 0.03 16 51 H 0.06 0.53 8.14 -51.93 -0.42 0.11 16 52 H 0.07 0.50 7.83 -51.93 -0.41 0.09 16 53 H 0.07 0.52 7.72 -51.93 -0.40 0.12 16 LS Contribution 402.71 15.07 6.07 6.07 Total: -1.00 -32.80 402.71 -10.28 -43.09 By element: Atomic # 1 Polarization: 13.79 SS G_CDS: -9.32 Total: 4.46 kcal Atomic # 6 Polarization: -1.71 SS G_CDS: -1.65 Total: -3.37 kcal Atomic # 7 Polarization: -48.79 SS G_CDS: -0.11 Total: -48.90 kcal Atomic # 8 Polarization: -18.14 SS G_CDS: -0.24 Total: -18.38 kcal Atomic # 14 Polarization: 22.05 SS G_CDS: -5.02 Total: 17.03 kcal Total LS contribution 6.07 Total: 6.07 kcal Total: -32.80 -10.28 -43.09 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. ZINC000450862271.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 -7.728 kcal (2) G-P(sol) polarization free energy of solvation -32.803 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -40.531 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) -43.087 kcal (6) G-S(sol) free energy of system = (1) + (5) -50.816 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.81 seconds