Wall clock time and date at job start Wed Apr 1 2020 04:51:42
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 1.53000 * 1
3 3 C 1.53008 * 109.47045 * 2 1
4 4 C 1.50700 * 109.46914 * 119.99644 * 2 1 3
5 5 C 1.39676 * 126.06646 * 274.99914 * 4 2 1
6 6 C 1.38411 * 105.35867 * 180.02562 * 5 4 2
7 7 C 1.47157 * 126.88616 * 180.02562 * 6 5 4
8 8 O 1.21622 * 120.00443 * 151.62121 * 7 6 5
9 9 N 1.34779 * 119.99924 * 331.61919 * 7 6 5
10 10 C 1.46826 * 120.30392 * 350.48776 * 9 7 6
11 11 C 1.52966 * 107.39475 * 235.04005 * 10 9 7
12 12 C 1.53546 * 109.95502 * 298.41147 * 11 10 9
13 13 H 1.09001 * 110.97881 * 289.23467 * 12 11 10
14 14 C 1.51777 * 112.12483 * 53.06996 * 12 11 10
15 15 H 1.08997 * 104.98446 * 206.70066 * 14 12 11
16 16 C 1.53383 * 105.83334 * 95.18087 * 14 12 11
17 17 C 1.54477 * 102.53982 * 29.49255 * 16 14 12
18 18 N 1.46865 * 106.65248 * 332.25736 * 17 16 14
19 19 C 1.36940 * 125.33352 * 195.40410 * 18 17 16
20 20 H 1.07999 * 119.99860 * 169.84831 * 19 18 17
21 21 C 1.38811 * 119.99991 * 349.85240 * 19 18 17
22 22 N 1.31622 * 120.00040 * 3.93566 * 21 19 18
23 23 Si 1.86804 * 120.00025 * 183.93170 * 21 19 18
24 24 H 1.48497 * 109.47030 * 94.99413 * 23 21 19
25 25 H 1.48504 * 109.47102 * 214.99323 * 23 21 19
26 26 H 1.48500 * 109.47015 * 334.99178 * 23 21 19
27 27 C 1.45645 * 120.30543 * 170.51550 * 9 7 6
28 28 N 1.36607 * 106.22915 * 0.26745 * 6 5 4
29 29 C 1.46496 * 125.18928 * 179.73394 * 28 6 5
30 30 N 1.28442 * 109.61820 * 359.54940 * 28 6 5
31 31 H 1.09000 * 109.47336 * 300.00386 * 1 2 3
32 32 H 1.09003 * 109.46763 * 60.00226 * 1 2 3
33 33 H 1.09003 * 109.47253 * 179.97438 * 1 2 3
34 34 H 1.09000 * 109.47336 * 239.99614 * 2 1 3
35 35 H 1.08998 * 109.46580 * 179.97438 * 3 2 1
36 36 H 1.09002 * 109.46451 * 299.99764 * 3 2 1
37 37 H 1.08998 * 109.47146 * 59.99139 * 3 2 1
38 38 H 1.08005 * 127.32320 * 0.06439 * 5 4 2
39 39 H 1.09005 * 109.87329 * 354.51371 * 10 9 7
40 40 H 1.08995 * 109.87336 * 115.49657 * 10 9 7
41 41 H 1.09002 * 109.37889 * 58.68167 * 11 10 9
42 42 H 1.09002 * 109.38408 * 178.46524 * 11 10 9
43 43 H 1.09002 * 110.79361 * 271.23212 * 16 14 12
44 44 H 1.08999 * 110.79430 * 147.75413 * 16 14 12
45 45 H 1.09000 * 110.01714 * 212.96270 * 17 16 14
46 46 H 1.08994 * 110.02232 * 91.56239 * 17 16 14
47 47 H 0.97003 * 120.00033 * 180.02562 * 22 21 19
48 48 H 1.09004 * 108.44188 * 22.15710 * 27 9 7
49 49 H 1.09000 * 108.44134 * 264.84983 * 27 9 7
50 50 H 1.09003 * 109.46751 * 93.67356 * 29 28 6
51 51 H 1.08997 * 109.47362 * 213.67785 * 29 28 6
52 52 H 1.09001 * 109.46816 * 333.67889 * 29 28 6
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 1.4426 0.0000
4 6 2.0323 -0.7103 1.2305
5 6 2.2136 -0.1402 2.4927
6 6 2.6859 -1.1655 3.2936
7 6 3.0349 -1.0822 4.7208
8 8 2.9394 -2.0666 5.4287
9 7 3.4605 0.0849 5.2435
10 6 3.7777 1.2180 4.3653
11 6 5.2092 1.6549 4.6815
12 6 5.3059 2.1146 6.1433
13 1 4.7897 3.0635 6.2890
14 6 4.7713 1.0712 7.1073
15 1 4.4394 1.6360 7.9783
16 6 5.9920 0.2683 7.5741
17 6 7.1308 1.3085 7.4875
18 7 6.7478 2.2657 6.4416
19 6 7.5911 3.1618 5.8407
20 1 7.2638 3.7118 4.9708
21 6 8.8668 3.3631 6.3497
22 7 9.2937 2.6377 7.3616
23 14 9.9777 4.6634 5.5984
24 1 9.8546 5.9258 6.3706
25 1 11.3861 4.1942 5.6381
26 1 9.5756 4.9039 4.1892
27 6 3.6104 0.2336 6.6845
28 7 2.7683 -2.2689 2.4924
29 6 3.2289 -3.5916 2.9219
30 7 2.3766 -1.9706 1.3061
31 1 -0.3634 0.5139 0.8899
32 1 -0.3633 0.5138 -0.8900
33 1 -0.3634 -1.0277 -0.0005
34 1 1.8934 -0.5139 -0.8899
35 1 3.1300 1.4425 0.0005
36 1 1.6766 1.9563 -0.8901
37 1 1.6766 1.9564 0.8899
38 1 2.0248 0.8830 2.7823
39 1 3.7062 0.9098 3.3222
40 1 3.0876 2.0397 4.5567
41 1 5.8874 0.8174 4.5179
42 1 5.4887 2.4800 4.0264
43 1 6.1825 -0.5706 6.9047
44 1 5.8596 -0.0759 8.5998
45 1 8.0657 0.8167 7.2191
46 1 7.2399 1.8228 8.4423
47 1 10.1850 2.7786 7.7175
48 1 3.7225 -0.7578 7.1236
49 1 2.6994 0.6814 7.0816
50 1 2.3716 -4.1963 3.2179
51 1 3.7510 -4.0794 2.0988
52 1 3.9066 -3.4830 3.7686
RHF calculation, no. of doubly occupied orbitals= 66
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
ZINC001036858616.mol2 52
1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED
SCF FIELD WAS ACHIEVED
Wall clock time and date at job start Wed Apr 1 2020 04:51:42
Heat of formation + Delta-G solvation = 73.627263 kcal
Electronic energy + Delta-G solvation = -31980.418870 eV
Core-core repulsion = 27982.483470 eV
Total energy + Delta-G solvation = -3997.935400 eV
No. of doubly occupied orbitals = 66
Molecular weight
(most abundant/longest-lived isotopes) = 346.211 amu
Computer time = 1.27 seconds
Orbital eigenvalues (eV)
-42.73900 -40.10804 -38.20695 -36.18735 -35.47272 -33.07827 -32.46311 -31.69851
-31.16281 -29.48003 -28.15580 -27.37977 -26.91277 -25.42804 -24.10767 -23.19613
-22.58559 -22.07196 -20.59323 -20.20577 -18.99938 -18.17351 -17.34896 -16.90860
-16.63964 -16.31021 -15.74102 -15.19094 -14.85860 -14.71042 -14.57410 -14.33971
-14.08133 -13.80776 -13.65606 -13.45662 -13.06872 -12.99780 -12.82572 -12.62826
-12.51569 -12.29163 -12.24574 -11.78353 -11.63611 -11.56818 -11.37424 -11.31915
-11.30967 -11.04603 -10.86010 -10.77193 -10.58487 -10.22157 -10.10871 -9.96137
-9.85563 -9.67425 -9.51834 -9.14542 -8.92372 -8.62893 -8.48577 -6.82361
-5.74687 -3.09597 1.24611 2.21171 2.43855 3.00002 3.12237 3.37591
3.42831 3.44950 4.17973 4.31793 4.45848 4.66348 4.81724 4.96215
4.98780 5.01628 5.10572 5.16738 5.21160 5.23931 5.32162 5.33344
5.36975 5.40987 5.45655 5.47600 5.51990 5.62991 5.66000 5.75409
5.84091 5.85008 5.87295 5.96860 6.02372 6.06156 6.12283 6.21903
6.26981 6.32918 6.38279 6.54712 6.61329 6.62179 6.70740 6.86220
7.04839 7.36018 7.56471 7.60707 7.81110 7.93969 8.07370 8.25905
9.19574 9.79691 10.46229 11.36339
Molecular weight = 346.21amu
Principal moments of inertia in cm(-1)
A = 0.012509 B = 0.003115 C = 0.002726
Principal moments of inertia in units of 10**(-40)*gram-cm**2
A = 2237.896922 B = 8987.018172 C =10267.952129
Net atomic charges, atomic populations, and dipole contributions
calculated with CM2
Atom NO. Type Charge No. of electrons
1 C -0.141 4.141
2 C -0.009 4.009
3 C -0.145 4.145
4 C 0.032 3.968
5 C -0.186 4.186
6 C -0.025 4.025
7 C 0.588 3.412
8 O -0.545 6.545
9 N -0.582 5.582
10 C 0.089 3.911
11 C -0.138 4.138
12 C 0.173 3.827
13 H 0.043 0.957
14 C -0.108 4.108
15 H 0.067 0.933
16 C -0.136 4.136
17 C 0.175 3.825
18 N -0.599 5.599
19 C -0.227 4.227
20 H 0.077 0.923
21 C -0.006 4.006
22 N -0.919 5.919
23 Si 0.909 3.091
24 H -0.289 1.289
25 H -0.292 1.292
26 H -0.281 1.281
27 C 0.136 3.864
28 N -0.261 5.261
29 C 0.092 3.908
30 N -0.280 5.280
31 H 0.057 0.943
32 H 0.060 0.940
33 H 0.054 0.946
34 H 0.083 0.917
35 H 0.060 0.940
36 H 0.062 0.938
37 H 0.060 0.940
38 H 0.164 0.836
39 H 0.096 0.904
40 H 0.071 0.929
41 H 0.066 0.934
42 H 0.071 0.929
43 H 0.055 0.945
44 H 0.061 0.939
45 H 0.064 0.936
46 H 0.027 0.973
47 H 0.252 0.748
48 H 0.087 0.913
49 H 0.059 0.941
50 H 0.085 0.915
51 H 0.092 0.908
52 H 0.101 0.899
For the charges calculated by CM2:
Dipole moment (debyes) X Y Z Total
from point charges -16.827 -6.601 -10.476 20.892
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 -0.199 4.199
2 C -0.029 4.029
3 C -0.203 4.203
4 C -0.125 4.125
5 C -0.215 4.215
6 C -0.154 4.154
7 C 0.375 3.625
8 O -0.424 6.424
9 N -0.314 5.314
10 C -0.034 4.034
11 C -0.179 4.179
12 C 0.065 3.935
13 H 0.061 0.939
14 C -0.127 4.127
15 H 0.085 0.915
16 C -0.175 4.175
17 C 0.050 3.950
18 N -0.324 5.324
19 C -0.355 4.355
20 H 0.094 0.906
21 C -0.203 4.203
22 N -0.566 5.566
23 Si 0.740 3.260
24 H -0.216 1.216
25 H -0.218 1.218
26 H -0.206 1.206
27 C 0.014 3.986
28 N -0.047 5.047
29 C -0.049 4.049
30 N -0.112 5.112
31 H 0.077 0.923
32 H 0.079 0.921
33 H 0.073 0.927
34 H 0.101 0.899
35 H 0.079 0.921
36 H 0.081 0.919
37 H 0.079 0.921
38 H 0.181 0.819
39 H 0.114 0.886
40 H 0.089 0.911
41 H 0.085 0.915
42 H 0.090 0.910
43 H 0.074 0.926
44 H 0.080 0.920
45 H 0.083 0.917
46 H 0.045 0.955
47 H 0.062 0.938
48 H 0.106 0.894
49 H 0.077 0.923
50 H 0.104 0.896
51 H 0.111 0.889
52 H 0.120 0.880
Dipole moment (debyes) X Y Z Total
from point charges -16.464 -8.176 -10.571 21.205
hybrid contribution 0.692 1.422 0.290 1.608
sum -15.771 -6.754 -10.281 20.001
Atomic orbital electron populations
1.21814 0.94061 1.02025 1.02040 1.19414 0.95516 0.95067 0.92892
1.21845 1.01653 0.94535 1.02276 1.21935 1.04162 0.90039 0.96321
1.22180 1.07290 0.99512 0.92510 1.21398 1.11050 0.88977 0.93997
1.16936 0.77637 0.83198 0.84759 1.90782 1.54806 1.35304 1.61468
1.47433 1.63780 1.12226 1.07927 1.22378 0.98176 0.87948 0.94902
1.22504 0.93640 1.01739 0.99982 1.20549 0.87354 0.94360 0.91212
0.93932 1.20728 0.95186 0.97059 0.99753 0.91476 1.22690 0.96313
0.99005 0.99492 1.21188 0.93902 0.88057 0.91812 1.44686 1.02140
1.40978 1.44583 1.18990 0.93895 1.14808 1.07831 0.90554 1.24863
0.97972 0.99521 0.97916 1.69972 1.18278 1.41179 1.27136 0.86143
0.80092 0.81429 0.78370 1.21621 1.21803 1.20599 1.20421 0.97513
1.01794 0.78900 1.45497 1.44594 1.09596 1.05045 1.22212 1.01609
0.79012 1.02027 1.73088 1.17277 1.17835 1.03015 0.92346 0.92054
0.92661 0.89897 0.92116 0.91944 0.92078 0.81856 0.88604 0.91074
0.91511 0.91031 0.92645 0.92021 0.91740 0.95490 0.93755 0.89441
0.92285 0.89611 0.88897 0.88045
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 -0.14 -1.08 9.18 37.16 0.34 -0.74 16
2 C -0.01 -0.08 3.38 -91.77 -0.31 -0.39 16
3 C -0.15 -1.10 8.79 37.16 0.33 -0.77 16
4 C 0.03 0.38 6.13 -82.47 -0.51 -0.13 16
5 C -0.19 -2.21 7.72 -38.98 -0.30 -2.51 16
6 C -0.03 -0.35 6.35 -82.06 -0.52 -0.87 16
7 C 0.59 8.91 7.36 -12.64 -0.09 8.82 16
8 O -0.55 -9.35 14.96 5.26 0.08 -9.28 16
9 N -0.58 -8.37 3.00 -177.70 -0.53 -8.90 16
10 C 0.09 1.16 5.19 -3.88 -0.02 1.14 16
11 C -0.14 -2.34 5.19 -26.47 -0.14 -2.48 16
12 C 0.17 3.29 3.43 -67.44 -0.23 3.06 16
13 H 0.04 0.82 8.14 -51.93 -0.42 0.40 16
14 C -0.11 -1.80 2.45 -92.88 -0.23 -2.03 16
15 H 0.07 1.09 8.04 -51.93 -0.42 0.67 16
16 C -0.14 -2.55 6.37 -25.76 -0.16 -2.71 16
17 C 0.18 4.18 5.39 -3.07 -0.02 4.16 16
18 N -0.60 -14.54 3.04 -163.71 -0.50 -15.04 16
19 C -0.23 -6.05 9.81 -15.06 -0.15 -6.20 16
20 H 0.08 1.96 7.67 -52.49 -0.40 1.56 16
21 C -0.01 -0.17 5.49 -17.43 -0.10 -0.27 16
22 N -0.92 -26.56 10.35 55.49 0.57 -25.98 16
23 Si 0.91 21.67 29.56 -169.99 -5.02 16.65 16
24 H -0.29 -6.91 7.11 56.52 0.40 -6.51 16
25 H -0.29 -7.06 7.11 56.52 0.40 -6.66 16
26 H -0.28 -6.48 7.11 56.52 0.40 -6.08 16
27 C 0.14 1.98 6.01 -6.34 -0.04 1.94 16
28 N -0.26 -3.46 3.75 -63.88 -0.24 -3.70 16
29 C 0.09 0.95 10.79 59.84 0.65 1.59 16
30 N -0.28 -3.72 11.90 33.64 0.40 -3.32 16
31 H 0.06 0.45 8.14 -51.93 -0.42 0.02 16
32 H 0.06 0.37 8.14 -51.93 -0.42 -0.05 16
33 H 0.05 0.46 8.14 -51.93 -0.42 0.04 16
34 H 0.08 0.73 8.14 -51.93 -0.42 0.31 16
35 H 0.06 0.50 8.14 -51.93 -0.42 0.08 16
36 H 0.06 0.38 8.14 -51.93 -0.42 -0.04 16
37 H 0.06 0.44 7.37 -51.93 -0.38 0.05 16
38 H 0.16 1.60 6.07 -52.48 -0.32 1.28 16
39 H 0.10 1.17 4.38 -51.93 -0.23 0.94 16
40 H 0.07 0.80 8.14 -51.93 -0.42 0.38 16
41 H 0.07 1.30 8.14 -51.93 -0.42 0.88 16
42 H 0.07 1.23 7.96 -51.93 -0.41 0.81 16
43 H 0.05 1.05 8.14 -51.93 -0.42 0.63 16
44 H 0.06 1.03 8.14 -51.93 -0.42 0.61 16
45 H 0.06 1.74 6.98 -51.93 -0.36 1.37 16
46 H 0.03 0.70 7.87 -51.93 -0.41 0.30 16
47 H 0.25 7.11 8.31 -40.82 -0.34 6.77 16
48 H 0.09 1.34 6.72 -51.93 -0.35 0.99 16
49 H 0.06 0.75 8.14 -51.93 -0.42 0.33 16
50 H 0.09 0.78 8.14 -51.93 -0.42 0.36 16
51 H 0.09 0.77 8.14 -51.93 -0.42 0.35 16
52 H 0.10 1.13 6.92 -51.93 -0.36 0.77 16
LS Contribution 399.19 15.07 6.02 6.02
Total: -1.00 -31.94 399.19 -9.42 -41.36
By element:
Atomic # 1 Polarization: 9.26 SS G_CDS: -8.70 Total: 0.56 kcal
Atomic # 6 Polarization: 3.12 SS G_CDS: -1.50 Total: 1.63 kcal
Atomic # 7 Polarization: -56.64 SS G_CDS: -0.30 Total: -56.93 kcal
Atomic # 8 Polarization: -9.35 SS G_CDS: 0.08 Total: -9.28 kcal
Atomic # 14 Polarization: 21.67 SS G_CDS: -5.02 Total: 16.65 kcal
Total LS contribution 6.02 Total: 6.02 kcal
Total: -31.94 -9.42 -41.36 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.
ZINC001036858616.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 114.984 kcal
(2) G-P(sol) polarization free energy of solvation -31.941 kcal
(3) G-ENP(sol) elect.-nuc.-pol. free energy of system 83.044 kcal
(4) G-CDS(sol) cavity-dispersion-solvent structure free energy -9.416 kcal
(5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -41.357 kcal
(6) G-S(sol) free energy of system = (1) + (5) 73.627 kcal
1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED
Total computer time = 1.27 seconds