return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C4H8OS (s-Ethyl thioacetate)

using model chemistry: HF/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at HF/6-31G(2df,p)
 hartrees
Energy at 0K-628.539214
Energy at 298.15K-628.548013
Nuclear repulsion energy294.300251
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at HF/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3294 2982 11.41      
2 A 3274 2964 36.43      
3 A 3261 2953 1.31      
4 A 3249 2942 33.03      
5 A 3246 2939 5.25      
6 A 3211 2907 19.24      
7 A 3190 2888 1.43      
8 A 3177 2877 27.33      
9 A 1975 1788 382.71      
10 A 1620 1467 1.35      
11 A 1611 1459 7.33      
12 A 1611 1459 3.00      
13 A 1598 1447 10.95      
14 A 1582 1432 14.25      
15 A 1538 1393 1.65      
16 A 1516 1373 16.88      
17 A 1422 1287 28.84      
18 A 1379 1249 0.01      
19 A 1252 1133 165.32      
20 A 1157 1048 3.41      
21 A 1134 1027 0.21      
22 A 1121 1015 2.57      
23 A 1052 953 4.87      
24 A 1029 932 45.19      
25 A 850 770 2.87      
26 A 757 685 0.96      
27 A 692 627 59.57      
28 A 567 513 6.25      
29 A 491 445 5.68      
30 A 399 362 2.87      
31 A 324 293 0.74      
32 A 263 238 0.17      
33 A 177 161 0.00      
34 A 173 156 1.32      
35 A 81 74 0.27      
36 A 66 60 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 26668.9 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 24148.7 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at HF/6-31G(2df,p)
ABC
0.21679 0.05462 0.04471

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 2.317 -0.834 -0.000
C2 1.405 -0.086 -0.000
S3 -0.237 -0.794 0.000
H4 1.110 1.852 -0.878
H5 2.633 1.631 -0.000
H6 1.111 1.852 0.878
C7 1.573 1.415 -0.000
H8 -1.246 1.213 0.879
H9 -1.246 1.213 -0.879
C10 -1.406 0.602 0.000
H11 -3.012 -0.561 -0.879
H12 -3.540 0.867 -0.000
H13 -3.012 -0.561 0.879
C14 -2.829 0.048 -0.000

Atom - Atom Distances (Å)
  O1 C2 S3 H4 H5 H6 C7 H8 H9 C10 H11 H12 H13 C14
O11.17982.55493.07282.48543.07262.36874.20204.20183.99035.40816.09935.40835.2212
C21.17981.78802.14822.11172.14811.51073.07973.07952.89344.52815.03574.52824.2356
S32.55491.78803.09693.75793.09702.85642.41192.41191.82072.92003.69722.92002.7250
H43.07282.14823.09691.77111.75561.08433.00792.44122.94354.77654.83375.08954.4209
H52.48542.11173.75791.77111.77111.08153.99933.99884.16786.11906.21996.11935.6868
H63.07262.14813.09701.75561.77111.08432.44193.00802.94395.08984.83424.77714.4214
C72.36871.51072.85641.08431.08151.08432.96002.95973.08805.06955.14245.06974.6097
H84.20203.07972.41193.00793.99932.44192.96001.75811.08223.05862.48092.50292.1532
H94.20183.07952.41192.44123.99883.00802.95971.75811.08222.50292.48093.05862.1532
C103.99032.89341.82072.94354.16782.94393.08801.08221.08222.16912.15072.16911.5273
H115.40814.52812.92004.77656.11905.08985.06953.05862.50292.16911.75831.75801.0846
H126.09935.03573.69724.83376.21994.83425.14242.48092.48092.15071.75831.75831.0852
H135.40834.52822.92005.08956.11934.77715.06972.50293.05862.16911.75801.75831.0846
C145.22124.23562.72504.42095.68684.42144.60972.15322.15321.52731.08461.08521.0846

picture of s-Ethyl thioacetate state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 S3 117.352 O1 C2 C7 122.910
C2 S3 C10 106.596 C2 C7 H4 110.672
C2 C7 H5 107.951 C2 C7 H6 110.669
S3 C2 C7 119.738 S3 C10 H8 109.747
S3 C10 H9 109.747 S3 C10 C14 108.645
H4 C7 H5 109.722 H4 C7 H6 108.102
H5 C7 H6 109.721 H8 C10 H9 108.636
H8 C10 C14 110.030 H9 C10 C14 110.029
C10 C14 H11 111.155 C10 C14 H12 109.655
C10 C14 H13 111.154 H11 C14 H12 108.253
H11 C14 H13 108.275 H12 C14 H13 108.254
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.405      
2 C 0.404      
3 S -0.070      
4 H 0.166      
5 H 0.183      
6 H 0.166      
7 C -0.502      
8 H 0.156      
9 H 0.156      
10 C -0.292      
11 H 0.158      
12 H 0.148      
13 H 0.158      
14 C -0.426      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.611 3.693 0.000 4.523
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -46.822 4.118 0.000
y 4.118 -45.324 0.000
z 0.000 0.000 -44.163
Traceless
 xyz
x -2.079 4.118 0.000
y 4.118 0.169 0.000
z 0.000 0.000 1.910
Polar
3z2-r23.820
x2-y2-1.498
xy4.118
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.909 -0.232 -0.000
y -0.232 8.721 0.000
z -0.000 0.000 6.840


<r2> (average value of r2) Å2
<r2> 250.358
(<r2>)1/2 15.823