Wall clock time and date at job start Wed Apr 1 2020 04:17:39
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 N 1.46503 * 1
3 3 C 1.35203 * 125.99947 * 2 1
4 4 C 1.34573 * 107.61360 * 179.97438 * 3 2 1
5 5 C 1.40552 * 108.08553 * 0.05684 * 4 3 2
6 6 N 1.30123 * 108.21097 * 359.87354 * 5 4 3
7 7 C 1.50948 * 123.49980 * 179.79013 * 5 4 3
8 8 C 1.53373 * 108.20909 * 343.34714 * 7 5 4
9 9 C 1.53027 * 109.75342 * 50.65514 * 8 7 5
10 10 C 1.50880 * 128.32483 * 180.12682 * 4 3 2
11 11 H 1.08994 * 109.72200 * 283.05806 * 10 4 3
12 12 C 1.50698 * 109.71774 * 43.66493 * 10 4 3
13 13 O 1.21289 * 120.00285 * 33.79918 * 12 10 4
14 14 N 1.34779 * 120.00273 * 213.79440 * 12 10 4
15 15 C 1.48148 * 127.83279 * 354.96649 * 14 12 10
16 16 C 1.54396 * 104.61425 * 219.57757 * 15 14 12
17 17 H 1.09001 * 110.42601 * 95.04619 * 16 15 14
18 18 N 1.46491 * 110.34596 * 217.26161 * 16 15 14
19 19 C 1.36935 * 120.00177 * 270.54142 * 18 16 15
20 20 H 1.08000 * 120.00260 * 359.97438 * 19 18 16
21 21 C 1.38812 * 120.00462 * 179.72037 * 19 18 16
22 22 N 1.31629 * 119.99652 * 0.02562 * 21 19 18
23 23 Si 1.86800 * 120.00462 * 179.97438 * 21 19 18
24 24 H 1.48493 * 109.46783 * 60.00398 * 23 21 19
25 25 H 1.48502 * 109.47107 * 180.02562 * 23 21 19
26 26 H 1.48498 * 109.47002 * 300.00349 * 23 21 19
27 27 C 1.54284 * 104.95844 * 336.13743 * 16 15 14
28 28 C 1.52998 * 110.34513 * 118.87025 * 27 16 15
29 29 C 1.52998 * 110.33708 * 241.02000 * 27 16 15
30 30 C 1.48145 * 127.83966 * 174.95525 * 14 12 10
31 31 H 1.08996 * 109.47194 * 89.99841 * 1 2 3
32 32 H 1.09007 * 109.46862 * 209.99659 * 1 2 3
33 33 H 1.08997 * 109.47417 * 329.99406 * 1 2 3
34 34 H 1.07993 * 126.19141 * 359.97438 * 3 2 1
35 35 H 1.08994 * 109.71683 * 223.66365 * 7 5 4
36 36 H 1.09003 * 109.74994 * 103.04172 * 7 5 4
37 37 H 1.08999 * 109.41863 * 290.57115 * 8 7 5
38 38 H 1.08992 * 109.42519 * 170.74259 * 8 7 5
39 39 H 1.09002 * 109.42767 * 168.22567 * 9 8 7
40 40 H 1.08993 * 109.42705 * 48.37857 * 9 8 7
41 41 H 1.09001 * 110.40788 * 100.80063 * 15 14 12
42 42 H 1.08994 * 110.40716 * 338.36081 * 15 14 12
43 43 H 0.97003 * 120.00479 * 90.53516 * 18 16 15
44 44 H 0.96996 * 119.99573 * 179.97438 * 22 21 19
45 45 H 1.09008 * 109.47191 * 59.99503 * 28 27 16
46 46 H 1.09000 * 109.47298 * 179.97438 * 28 27 16
47 47 H 1.09001 * 109.46940 * 299.99665 * 28 27 16
48 48 H 1.09002 * 109.47538 * 60.00093 * 29 27 16
49 49 H 1.09005 * 109.46952 * 180.02562 * 29 27 16
50 50 H 1.09008 * 109.47469 * 299.99814 * 29 27 16
51 51 H 1.08995 * 110.40453 * 21.63867 * 30 14 12
52 52 H 1.08998 * 110.40875 * 259.20281 * 30 14 12
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 7 1.4650 0.0000 0.0000
3 6 2.2597 1.0938 0.0000
4 6 3.5368 0.6694 0.0006
5 6 3.5294 -0.7361 -0.0004
6 7 2.2912 -1.1363 0.0012
7 6 4.7837 -1.5758 -0.0047
8 6 5.9572 -0.6823 -0.4251
9 6 5.9648 0.5933 0.4203
10 6 4.7980 1.4975 0.0034
11 1 4.9793 1.8950 -0.9951
12 6 4.6587 2.6326 0.9848
13 8 4.0196 2.4781 2.0041
14 7 5.2443 3.8195 0.7301
15 6 6.1408 4.1671 -0.3969
16 6 7.2229 5.0720 0.2308
17 1 8.0984 4.4837 0.5054
18 7 7.5985 6.1382 -0.7009
19 6 8.6125 5.9370 -1.5989
20 1 9.1356 4.9924 -1.6200
21 6 8.9646 6.9452 -2.4857
22 7 8.3241 8.0949 -2.4631
23 14 10.3484 6.6709 -3.7102
24 1 10.0114 5.5221 -4.5887
25 1 10.5267 7.8914 -4.5372
26 1 11.6073 6.3815 -2.9778
27 6 6.5612 5.6688 1.4904
28 6 7.3326 5.2525 2.7444
29 6 6.4997 7.1940 1.3868
30 6 5.1374 5.0723 1.5134
31 1 -0.3633 0.0000 -1.0276
32 1 -0.3633 -0.8901 0.5138
33 1 -0.3634 0.8899 0.5139
34 1 1.9294 2.1220 -0.0004
35 1 4.6743 -2.3967 -0.7134
36 1 4.9640 -1.9738 0.9939
37 1 5.8533 -0.4189 -1.4777
38 1 6.8935 -1.2204 -0.2777
39 1 6.9055 1.1227 0.2693
40 1 5.8620 0.3310 1.4732
41 1 5.5914 4.7095 -1.1663
42 1 6.5931 3.2674 -0.8142
43 1 7.1289 6.9868 -0.6819
44 1 8.5704 8.7995 -3.0825
45 1 8.3587 5.6141 2.6766
46 1 6.8539 5.6816 3.6246
47 1 7.3350 4.1655 2.8253
48 1 5.9151 7.4755 0.5109
49 1 6.0308 7.6005 2.2830
50 1 7.5099 7.5929 1.2930
51 1 4.8326 4.8556 2.5372
52 1 4.4312 5.7561 1.0422
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
ZINC000996210075.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 04:17:39
Heat of formation + Delta-G solvation = 56.731028 kcal
Electronic energy + Delta-G solvation = -31794.542070 eV
Core-core repulsion = 27795.873994 eV
Total energy + Delta-G solvation = -3998.668076 eV
No. of doubly occupied orbitals = 66
Molecular weight
(most abundant/longest-lived isotopes) = 346.211 amu
Computer time = 0.94 seconds
Orbital eigenvalues (eV)
-41.59921 -39.90084 -38.09025 -36.44578 -34.10217 -33.24481 -32.71010 -31.84567
-30.81187 -28.85812 -27.63019 -27.32533 -26.87931 -26.13330 -23.91386 -23.50620
-21.99672 -21.73310 -21.04248 -19.11007 -18.76328 -18.32660 -17.36317 -16.85165
-16.60149 -15.64938 -15.43182 -15.21111 -14.78974 -14.75542 -14.56111 -14.03682
-13.95419 -13.77314 -13.54205 -13.28005 -13.03789 -12.92470 -12.89698 -12.60692
-12.53359 -12.45393 -12.02992 -11.78788 -11.69746 -11.59083 -11.32424 -11.19735
-11.12761 -10.96796 -10.92096 -10.88749 -10.53230 -10.46278 -10.39622 -10.23379
-9.88207 -9.67973 -9.45601 -9.26732 -9.02427 -8.34719 -8.32011 -7.06674
-5.85629 -3.15291 1.86282 2.39815 2.67625 2.85771 3.31826 3.39128
3.44562 3.44841 4.19601 4.51415 4.63408 4.68516 4.75727 4.84922
4.91845 4.95036 5.07491 5.11971 5.15842 5.18493 5.22181 5.28450
5.40563 5.46803 5.49714 5.54696 5.66799 5.69085 5.73243 5.79021
5.82882 5.89249 5.93633 6.00608 6.03393 6.07128 6.12303 6.17753
6.22803 6.28467 6.32386 6.36302 6.45907 6.51928 6.61460 6.64293
6.84499 6.95589 6.96306 7.62729 7.66949 7.90354 8.32867 8.44593
9.44998 10.00098 10.34848 11.36472
Molecular weight = 346.21amu
Principal moments of inertia in cm(-1)
A = 0.012447 B = 0.002977 C = 0.002722
Principal moments of inertia in units of 10**(-40)*gram-cm**2
A = 2249.075023 B = 9403.171603 C =10285.830942
Net atomic charges, atomic populations, and dipole contributions
calculated with CM2
Atom NO. Type Charge No. of electrons
1 C 0.106 3.894
2 N -0.387 5.387
3 C 0.081 3.919
4 C -0.216 4.216
5 C 0.087 3.913
6 N -0.295 5.295
7 C -0.038 4.038
8 C -0.113 4.113
9 C -0.106 4.106
10 C -0.022 4.022
11 H 0.095 0.905
12 C 0.538 3.462
13 O -0.549 6.549
14 N -0.618 5.618
15 C 0.075 3.925
16 C 0.177 3.823
17 H 0.063 0.937
18 N -0.715 5.715
19 C -0.247 4.247
20 H 0.070 0.930
21 C -0.008 4.008
22 N -0.931 5.931
23 Si 0.906 3.094
24 H -0.285 1.285
25 H -0.291 1.291
26 H -0.286 1.286
27 C -0.088 4.088
28 C -0.130 4.130
29 C -0.130 4.130
30 C 0.116 3.884
31 H 0.071 0.929
32 H 0.086 0.914
33 H 0.085 0.915
34 H 0.168 0.832
35 H 0.081 0.919
36 H 0.083 0.917
37 H 0.070 0.930
38 H 0.077 0.923
39 H 0.075 0.925
40 H 0.071 0.929
41 H 0.075 0.925
42 H 0.070 0.930
43 H 0.391 0.609
44 H 0.257 0.743
45 H 0.059 0.941
46 H 0.049 0.951
47 H 0.050 0.950
48 H 0.061 0.939
49 H 0.044 0.956
50 H 0.072 0.928
51 H 0.075 0.925
52 H 0.067 0.933
For the charges calculated by CM2:
Dipole moment (debyes) X Y Z Total
from point charges -10.518 -13.785 6.110 18.384
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 -0.035 4.035
2 N -0.169 5.169
3 C -0.064 4.064
4 C -0.227 4.227
5 C -0.081 4.081
6 N -0.116 5.116
7 C -0.077 4.077
8 C -0.151 4.151
9 C -0.144 4.144
10 C -0.044 4.044
11 H 0.113 0.887
12 C 0.327 3.673
13 O -0.427 6.427
14 N -0.351 5.351
15 C -0.051 4.051
16 C 0.064 3.936
17 H 0.081 0.919
18 N -0.358 5.358
19 C -0.378 4.378
20 H 0.088 0.912
21 C -0.205 4.205
22 N -0.578 5.578
23 Si 0.737 3.263
24 H -0.212 1.212
25 H -0.217 1.217
26 H -0.212 1.212
27 C -0.090 4.090
28 C -0.187 4.187
29 C -0.188 4.188
30 C -0.007 4.007
31 H 0.090 0.910
32 H 0.105 0.895
33 H 0.104 0.896
34 H 0.186 0.814
35 H 0.100 0.900
36 H 0.102 0.898
37 H 0.089 0.911
38 H 0.095 0.905
39 H 0.094 0.906
40 H 0.090 0.910
41 H 0.093 0.907
42 H 0.089 0.911
43 H 0.228 0.772
44 H 0.066 0.934
45 H 0.078 0.922
46 H 0.068 0.932
47 H 0.069 0.931
48 H 0.080 0.920
49 H 0.063 0.937
50 H 0.091 0.909
51 H 0.093 0.907
52 H 0.085 0.915
Dipole moment (debyes) X Y Z Total
from point charges -11.739 -14.968 6.546 20.117
hybrid contribution 0.883 1.091 -0.869 1.651
sum -10.855 -13.877 5.676 18.510
Atomic orbital electron populations
1.21785 0.74374 1.04305 1.03044 1.48437 1.06273 1.03399 1.58801
1.21899 0.90724 0.93123 1.00649 1.19414 0.93275 0.93277 1.16766
1.22272 0.93353 0.93460 0.99012 1.77020 1.01106 1.07998 1.25512
1.20137 0.88461 0.96359 1.02731 1.21550 0.97617 0.95502 1.00410
1.21491 0.96724 0.95396 1.00763 1.19635 0.93199 0.92622 0.98954
0.88662 1.20133 0.78406 0.81925 0.86862 1.90660 1.42327 1.82048
1.27628 1.49076 1.48030 1.09681 1.28337 1.23687 0.92199 1.00053
0.89164 1.21108 0.93963 0.90105 0.88398 0.91873 1.42709 1.40684
1.13503 1.38927 1.19215 1.09440 0.98987 1.10120 0.91156 1.24735
0.99742 0.96144 0.99871 1.69644 1.43357 1.04717 1.40116 0.86288
0.82045 0.76829 0.81122 1.21190 1.21737 1.21231 1.21756 0.94177
0.96490 0.96571 1.21782 1.00195 1.00674 0.96066 1.21681 1.03291
0.93257 1.00525 1.22410 0.96888 0.84759 0.96613 0.91019 0.89511
0.89636 0.81444 0.90010 0.89844 0.91099 0.90474 0.90607 0.91011
0.90658 0.91136 0.77169 0.93352 0.92195 0.93154 0.93079 0.92048
0.93739 0.90893 0.90658 0.91468
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 0.11 0.83 11.47 59.85 0.69 1.52 16
2 N -0.39 -4.89 4.03 -68.29 -0.28 -5.16 16
3 C 0.08 1.07 10.66 -17.36 -0.19 0.89 16
4 C -0.22 -3.01 5.05 -104.96 -0.53 -3.54 16
5 C 0.09 1.18 7.10 -82.32 -0.58 0.60 16
6 N -0.30 -4.23 12.57 33.76 0.42 -3.81 16
7 C -0.04 -0.39 6.31 -27.57 -0.17 -0.56 16
8 C -0.11 -1.06 5.86 -26.52 -0.16 -1.21 16
9 C -0.11 -1.21 5.17 -26.52 -0.14 -1.35 16
10 C -0.02 -0.29 2.33 -92.64 -0.22 -0.50 16
11 H 0.10 1.22 7.06 -51.93 -0.37 0.85 16
12 C 0.54 8.43 6.67 -10.99 -0.07 8.36 16
13 O -0.55 -10.20 16.36 5.55 0.09 -10.11 16
14 N -0.62 -9.48 3.32 -169.30 -0.56 -10.04 16
15 C 0.07 1.21 6.32 -2.40 -0.02 1.19 16
16 C 0.18 3.17 3.35 -66.53 -0.22 2.95 16
17 H 0.06 1.17 7.66 -51.93 -0.40 0.78 16
18 N -0.72 -16.06 4.57 -52.07 -0.24 -16.30 16
19 C -0.25 -6.27 9.96 -15.06 -0.15 -6.42 16
20 H 0.07 1.73 7.83 -52.49 -0.41 1.32 16
21 C -0.01 -0.23 5.50 -17.43 -0.10 -0.32 16
22 N -0.93 -26.38 13.06 55.49 0.72 -25.65 16
23 Si 0.91 21.22 29.55 -169.99 -5.02 16.20 16
24 H -0.29 -6.58 7.11 56.52 0.40 -6.17 16
25 H -0.29 -6.96 7.11 56.52 0.40 -6.56 16
26 H -0.29 -6.62 7.11 56.52 0.40 -6.22 16
27 C -0.09 -1.37 1.03 -153.11 -0.16 -1.53 16
28 C -0.13 -1.84 8.24 37.16 0.31 -1.53 16
29 C -0.13 -2.07 7.12 37.16 0.26 -1.80 16
30 C 0.12 1.75 6.16 -2.41 -0.01 1.73 16
31 H 0.07 0.45 8.14 -51.93 -0.42 0.03 16
32 H 0.09 0.61 8.14 -51.93 -0.42 0.19 16
33 H 0.09 0.51 8.14 -51.93 -0.42 0.09 16
34 H 0.17 1.98 8.06 -52.49 -0.42 1.55 16
35 H 0.08 0.73 8.14 -51.93 -0.42 0.30 16
36 H 0.08 0.79 8.14 -51.93 -0.42 0.37 16
37 H 0.07 0.67 8.10 -51.93 -0.42 0.24 16
38 H 0.08 0.58 8.14 -51.93 -0.42 0.16 16
39 H 0.08 0.83 8.14 -51.93 -0.42 0.41 16
40 H 0.07 0.90 8.07 -51.93 -0.42 0.48 16
41 H 0.08 1.32 8.06 -51.93 -0.42 0.91 16
42 H 0.07 1.06 7.16 -51.93 -0.37 0.69 16
43 H 0.39 9.27 5.11 -40.82 -0.21 9.06 16
44 H 0.26 7.13 8.31 -40.82 -0.34 6.79 16
45 H 0.06 0.87 8.14 -51.92 -0.42 0.45 16
46 H 0.05 0.64 8.14 -51.93 -0.42 0.22 16
47 H 0.05 0.73 8.14 -51.93 -0.42 0.30 16
48 H 0.06 1.04 6.93 -51.93 -0.36 0.68 16
49 H 0.04 0.60 8.14 -51.93 -0.42 0.18 16
50 H 0.07 1.32 7.76 -51.92 -0.40 0.91 16
51 H 0.07 1.14 7.57 -51.93 -0.39 0.75 16
52 H 0.07 0.99 7.84 -51.93 -0.41 0.58 16
LS Contribution 408.13 15.07 6.15 6.15
Total: -1.00 -32.00 408.13 -8.95 -40.95
By element:
Atomic # 1 Polarization: 18.11 SS G_CDS: -8.78 Total: 9.33 kcal
Atomic # 6 Polarization: -0.08 SS G_CDS: -1.45 Total: -1.54 kcal
Atomic # 7 Polarization: -61.05 SS G_CDS: 0.07 Total: -60.97 kcal
Atomic # 8 Polarization: -10.20 SS G_CDS: 0.09 Total: -10.11 kcal
Atomic # 14 Polarization: 21.22 SS G_CDS: -5.02 Total: 16.20 kcal
Total LS contribution 6.15 Total: 6.15 kcal
Total: -32.00 -8.95 -40.95 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.
ZINC000996210075.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 97.676 kcal
(2) G-P(sol) polarization free energy of solvation -31.998 kcal
(3) G-ENP(sol) elect.-nuc.-pol. free energy of system 65.678 kcal
(4) G-CDS(sol) cavity-dispersion-solvent structure free energy -8.947 kcal
(5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -40.945 kcal
(6) G-S(sol) free energy of system = (1) + (5) 56.731 kcal
1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED
Total computer time = 0.94 seconds