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: B1B95/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/STO-3G
 hartrees
Energy at 0K-623.287075
Energy at 298.15K-623.295574
Nuclear repulsion energy289.878025
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 B1B95/STO-3G
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 3517 3105 0.23      
2 A 3513 3102 0.84      
3 A 3508 3097 0.23      
4 A 3501 3092 0.00      
5 A 3457 3052 2.68      
6 A 3346 2954 2.16      
7 A 3338 2948 1.24      
8 A 3332 2942 1.06      
9 A 1857 1640 95.83      
10 A 1689 1491 2.73      
11 A 1684 1487 8.89      
12 A 1680 1483 3.13      
13 A 1673 1477 0.40      
14 A 1668 1472 11.97      
15 A 1575 1390 0.71      
16 A 1535 1356 4.82      
17 A 1448 1279 29.09      
18 A 1396 1232 0.02      
19 A 1219 1077 112.06      
20 A 1172 1035 1.90      
21 A 1141 1008 0.91      
22 A 1105 976 3.10      
23 A 1087 960 4.56      
24 A 1036 915 31.64      
25 A 863 762 4.41      
26 A 824 728 2.02      
27 A 688 607 19.83      
28 A 515 454 0.82      
29 A 465 410 3.79      
30 A 401 354 1.05      
31 A 342 302 0.76      
32 A 303 268 0.00      
33 A 237 209 0.03      
34 A 197 174 0.54      
35 A 102 90 0.04      
36 A 72 63 0.39      

Unscaled Zero Point Vibrational Energy (zpe) 27741.3 cm-1
Scaled (by 0.883) Zero Point Vibrational Energy (zpe) 24495.6 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 B1B95/STO-3G
ABC
0.20403 0.05430 0.04396

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/STO-3G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -2.423 -0.785 0.000
C2 -1.395 -0.079 0.000
S3 0.238 -0.859 -0.000
H4 -0.981 1.899 0.891
H5 -2.523 1.776 -0.000
H6 -0.981 1.899 -0.891
C7 -1.467 1.478 -0.000
H8 1.206 1.201 -0.888
H9 1.206 1.201 0.888
C10 1.372 0.571 -0.000
H11 3.035 -0.545 0.890
H12 3.525 0.917 0.000
H13 3.035 -0.545 -0.890
C14 2.831 0.065 0.000

Atom - Atom Distances (Å)
  O1 C2 S3 H4 H5 H6 C7 H8 H9 C10 H11 H12 H13 C14
O11.24732.66293.17442.56263.17442.45684.23194.23184.03045.53536.18715.53535.3231
C21.24731.81032.20832.17112.20831.55883.03243.03232.84244.54225.02004.54224.2289
S32.66291.81033.14423.81733.14422.89332.44362.44351.82502.95113.73572.95112.7526
H43.17442.20833.14421.78571.78171.09862.90442.29552.84464.70074.69705.02684.3231
H52.56262.17113.81731.78571.78571.09773.87703.87694.07756.08876.10956.08885.6216
H63.17442.20833.14421.78171.78571.09862.29572.90442.84465.02684.69714.70084.3232
C72.45681.55882.89331.09861.09771.09862.83062.83052.98035.01505.02375.01514.5248
H84.23193.03242.44362.90443.87702.29572.83061.77681.10173.09132.49962.52852.1730
H94.23183.03232.44352.29553.87692.90442.83051.77681.10172.52842.49963.09132.1730
C104.03042.84241.82502.84464.07752.84462.98031.10171.10172.19162.18072.19161.5448
H115.53534.54222.95114.70076.08875.02685.01503.09132.52842.19161.78041.78031.0981
H126.18715.02003.73574.69706.10954.69715.02372.49962.49962.18071.78041.78041.0985
H135.53534.54222.95115.02686.08884.70085.01512.52853.09132.19161.78031.78041.0981
C145.32314.22892.75264.32315.62164.32324.52482.17302.17301.54481.09811.09851.0981

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 120.004 O1 C2 C7 121.824
C2 S3 C10 102.868 C2 C7 H4 111.226
C2 C7 H5 108.377 C2 C7 H6 111.228
S3 C2 C7 118.172 S3 C10 H8 110.782
S3 C10 H9 110.781 S3 C10 C14 109.262
H4 C7 H5 108.793 H4 C7 H6 108.367
H5 C7 H6 108.793 H8 C10 H9 107.493
H8 C10 C14 109.243 H9 C10 C14 109.242
C10 C14 H11 110.911 C10 C14 H12 110.033
C10 C14 H13 110.911 H11 C14 H12 108.295
H11 C14 H13 108.309 H12 C14 H13 108.295
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.195      
2 C 0.052      
3 S 0.161      
4 H 0.087      
5 H 0.095      
6 H 0.087      
7 C -0.251      
8 H 0.081      
9 H 0.081      
10 C -0.216      
11 H 0.083      
12 H 0.082      
13 H 0.083      
14 C -0.229      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.909 2.009 0.000 2.771
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.547 -2.323 0.000
y -2.323 -40.819 0.000
z 0.000 0.000 -39.659
Traceless
 xyz
x -3.308 -2.323 0.000
y -2.323 0.784 0.000
z 0.000 0.000 2.524
Polar
3z2-r25.047
x2-y2-2.728
xy-2.323
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.462 0.245 -0.000
y 0.245 4.567 0.000
z -0.000 0.000 2.780


<r2> (average value of r2) Å2
<r2> 251.049
(<r2>)1/2 15.845