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: LSDA/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 LSDA/6-31G(2df,p)
 hartrees
Energy at 0K-628.385396
Energy at 298.15K-628.393750
Nuclear repulsion energy295.616180
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 LSDA/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 3106 3056 1.39      
2 A 3079 3029 7.18      
3 A 3076 3027 7.24      
4 A 3063 3014 0.88      
5 A 3037 2988 2.77      
6 A 2988 2940 17.05      
7 A 2984 2936 4.84      
8 A 2981 2934 5.31      
9 A 1792 1764 264.68      
10 A 1427 1404 4.61      
11 A 1416 1394 12.74      
12 A 1399 1376 0.26      
13 A 1391 1369 16.35      
14 A 1372 1350 21.24      
15 A 1338 1317 7.95      
16 A 1299 1278 41.77      
17 A 1226 1206 15.52      
18 A 1210 1190 0.09      
19 A 1122 1104 154.64      
20 A 1068 1051 12.54      
21 A 994 978 0.01      
22 A 978 962 4.45      
23 A 969 954 3.03      
24 A 920 905 16.59      
25 A 759 747 6.67      
26 A 708 697 0.73      
27 A 642 631 54.51      
28 A 504 496 0.88      
29 A 429 422 3.02      
30 A 367 361 1.63      
31 A 302 297 1.31      
32 A 252 248 0.13      
33 A 171 168 0.46      
34 A 162 159 0.79      
35 A 101 100 0.29      
36 A 51 51 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 24340.2 cm-1
Scaled (by 0.984) Zero Point Vibrational Energy (zpe) 23950.7 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 LSDA/6-31G(2df,p)
ABC
0.21703 0.05605 0.04570

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 2.354 -0.796 0.000
C2 1.393 -0.069 0.000
S3 -0.224 -0.806 -0.000
H4 0.958 1.843 -0.886
H5 2.522 1.720 -0.001
H6 0.958 1.843 0.886
C7 1.464 1.422 -0.000
H8 -1.200 1.206 0.892
H9 -1.200 1.206 -0.892
C10 -1.379 0.582 0.000
H11 -2.966 -0.594 -0.889
H12 -3.521 0.848 0.000
H13 -2.965 -0.594 0.890
C14 -2.783 0.030 0.000

Atom - Atom Distances (Å)
  O1 C2 S3 H4 H5 H6 C7 H8 H9 C10 H11 H12 H13 C14
O11.20582.57823.11482.52193.11462.39084.17604.17633.97965.39766.10125.39745.2034
C21.20581.77702.15152.11522.15151.49273.02393.02412.84724.47924.99874.47914.1770
S32.57821.77703.03323.73103.03352.79542.40812.40801.80582.89023.68892.89022.6923
H43.11482.15153.03321.80151.77151.10332.86772.25022.79964.61894.67294.94844.2505
H52.52192.11523.73101.80151.80151.09933.86183.86184.06376.02156.10566.02155.5676
H63.11462.15153.03351.77151.80151.10342.25052.86802.79994.94884.67334.61934.2509
C72.39081.49272.79541.10331.09931.10342.81752.81762.96454.94735.01774.94734.4691
H84.17603.02392.40812.86773.86182.25052.81751.78401.10353.08752.51212.52152.1644
H94.17633.02412.40802.25023.86182.86802.81761.78401.10352.52152.51203.08752.1644
C103.97962.84721.80582.79964.06372.79992.96451.10351.10352.16592.15842.16591.5084
H115.39764.47922.89024.61896.02154.94884.94733.08752.52152.16591.78351.77951.1021
H126.10124.99873.68894.67296.10564.67335.01772.51212.51202.15841.78351.78351.1018
H135.39744.47912.89024.94846.02154.61934.94732.52153.08752.16591.77951.78351.1021
C145.20344.17702.69234.25055.56764.25094.46912.16442.16441.50841.10211.10181.1021

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 118.357 O1 C2 C7 124.399
C2 S3 C10 105.250 C2 C7 H4 111.061
C2 C7 H5 108.429 C2 C7 H6 111.055
S3 C2 C7 117.245 S3 C10 H8 109.343
S3 C10 H9 109.343 S3 C10 C14 108.318
H4 C7 H5 109.747 H4 C7 H6 106.796
H5 C7 H6 109.743 H8 C10 H9 107.870
H8 C10 C14 110.973 H9 C10 C14 110.973
C10 C14 H11 111.178 C10 C14 H12 110.599
C10 C14 H13 111.178 H11 C14 H12 108.038
H11 C14 H13 107.673 H12 C14 H13 108.038
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.254      
2 C 0.328      
3 S -0.129      
4 H 0.179      
5 H 0.183      
6 H 0.179      
7 C -0.580      
8 H 0.163      
9 H 0.163      
10 C -0.243      
11 H 0.176      
12 H 0.160      
13 H 0.176      
14 C -0.502      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.632 3.266 -0.000 4.194
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -45.854 3.481 -0.001
y 3.481 -44.201 0.000
z -0.001 0.000 -43.593
Traceless
 xyz
x -1.957 3.481 -0.001
y 3.481 0.523 0.000
z -0.001 0.000 1.434
Polar
3z2-r22.868
x2-y2-1.653
xy3.481
xz-0.001
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 13.516 0.117 0.000
y 0.117 9.438 -0.000
z 0.000 -0.000 7.094


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000