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

using model chemistry: MP2/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/CEP-31G
 hartrees
Energy at 0K-52.580801
Energy at 298.15K-52.589098
HF Energy-52.086121
Nuclear repulsion energy120.864955
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 MP2/CEP-31G
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 3173 3066 19.12      
2 A 3166 3060 83.48      
3 A 3156 3050 8.57      
4 A 3144 3038 5.11      
5 A 3139 3033 44.80      
6 A 3074 2970 35.54      
7 A 3046 2943 10.80      
8 A 3039 2937 42.58      
9 A 1571 1518 152.08      
10 A 1526 1474 4.46      
11 A 1508 1457 15.66      
12 A 1505 1455 12.24      
13 A 1503 1452 28.97      
14 A 1490 1440 24.58      
15 A 1460 1411 8.52      
16 A 1443 1394 17.12      
17 A 1351 1305 36.34      
18 A 1293 1250 0.05      
19 A 1162 1123 129.21      
20 A 1089 1053 3.24      
21 A 1073 1037 0.87      
22 A 1065 1029 0.57      
23 A 1011 977 5.89      
24 A 957 925 63.39      
25 A 823 795 8.29      
26 A 657 635 0.84      
27 A 600 580 78.64      
28 A 484 468 1.94      
29 A 432 418 4.22      
30 A 360 347 0.78      
31 A 298 288 1.39      
32 A 243 235 0.05      
33 A 168 162 0.03      
34 A 156 150 1.02      
35 A 64 62 0.68      
36 A 59 57 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 25143.3 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 24296.0 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 MP2/CEP-31G
ABC
0.19673 0.05079 0.04134

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 2.481 -0.809 0.000
C2 1.455 -0.058 0.000
S3 -0.247 -0.877 -0.000
H4 1.054 1.916 -0.898
H5 2.620 1.765 -0.001
H6 1.055 1.916 0.899
C7 1.547 1.492 0.000
H8 -1.272 1.228 0.905
H9 -1.273 1.228 -0.906
C10 -1.455 0.615 -0.000
H11 -3.114 -0.558 -0.900
H12 -3.634 0.912 0.000
H13 -3.114 -0.558 0.901
C14 -2.919 0.061 0.000

Atom - Atom Distances (Å)
  O1 C2 S3 H4 H5 H6 C7 H8 H9 C10 H11 H12 H13 C14
O11.27222.72893.20522.57823.20462.48404.36614.36644.18585.67316.35315.67295.4700
C21.27221.88852.20552.16332.20551.55253.14843.14872.98634.68375.18054.68354.3754
S32.72891.88853.20963.89843.21022.97122.51102.51101.91983.02243.83083.02242.8321
H43.20522.20553.20961.81091.79711.10873.02312.42662.96544.84754.87805.17004.4760
H52.57822.16333.89841.81091.81081.10734.03214.03234.23356.25176.31176.25165.7948
H63.20462.20553.21021.79711.81081.10872.42733.02522.96675.17144.87924.84804.4771
C72.48401.55252.97121.10871.10731.10872.97252.97313.12675.17075.21305.17044.6892
H84.36613.14842.51103.02314.03212.42732.97251.81151.10883.13732.54892.56542.2121
H94.36643.14872.51102.42664.03233.02522.97311.81151.10882.56542.54893.13732.2121
C104.18582.98631.91982.96544.23352.96673.12671.10881.10882.22262.19962.22261.5656
H115.67314.68373.02244.84756.25175.17145.17073.13732.56542.22261.80031.80031.1097
H126.35315.18053.83084.87806.31174.87925.21302.54892.54892.19961.80031.80031.1116
H135.67294.68353.02245.17006.25164.84805.17042.56543.13732.22261.80031.80031.1097
C145.47004.37542.83214.47605.79484.47714.68922.21212.21211.56561.10971.11161.1097

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 118.079 O1 C2 C7 122.825
C2 S3 C10 103.282 C2 C7 H4 110.844
C2 C7 H5 107.667 C2 C7 H6 110.838
S3 C2 C7 119.096 S3 C10 H8 109.055
S3 C10 H9 109.056 S3 C10 C14 108.266
H4 C7 H5 109.603 H4 C7 H6 108.279
H5 C7 H6 109.601 H8 C10 H9 109.545
H8 C10 C14 110.441 H9 C10 C14 110.441
C10 C14 H11 111.217 C10 C14 H12 109.317
C10 C14 H13 111.217 H11 C14 H12 108.285
H11 C14 H13 108.429 H12 C14 H13 108.285
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability