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 CH3COOCH3 (methyl acetate)

using model chemistry: CID/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CID/6-31G*
 hartrees
Energy at 0K-267.481892
Energy at 298.15K-267.488878
HF Energy-266.836116
Nuclear repulsion energy182.025928
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 CID/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3307 3054 19.17      
2 A' 3305 3053 4.69      
3 A' 3196 2952 26.31      
4 A' 3188 2945 1.97      
5 A' 1953 1804 267.93      
6 A' 1596 1475 7.07      
7 A' 1575 1455 27.26      
8 A' 1567 1447 10.26      
9 A' 1506 1391 87.20      
10 A' 1392 1286 361.02      
11 A' 1286 1188 1.73      
12 A' 1168 1079 63.63      
13 A' 1056 976 3.10      
14 A' 923 853 18.09      
15 A' 680 628 10.47      
16 A' 444 410 7.26      
17 A' 300 277 13.57      
18 A" 3283 3033 21.94      
19 A" 3264 3015 5.05      
20 A" 1587 1466 5.90      
21 A" 1570 1450 7.70      
22 A" 1249 1154 2.18      
23 A" 1137 1050 9.47      
24 A" 640 591 10.63      
25 A" 188 173 6.91      
26 A" 162 150 1.48      
27 A" 88 81 0.40      

Unscaled Zero Point Vibrational Energy (zpe) 20804.3 cm-1
Scaled (by 0.9237) Zero Point Vibrational Energy (zpe) 19216.9 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 CID/6-31G*
ABC
0.34520 0.14045 0.10368

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.119 1.488 0.000
C2 0.000 0.488 0.000
O3 -1.172 0.751 0.000
O4 0.473 -0.764 0.000
C5 -0.514 -1.792 0.000
H6 0.707 2.490 0.000
H7 1.744 1.340 0.878
H8 1.744 1.340 -0.878
H9 0.038 -2.725 0.000
H10 -1.139 -1.720 0.885
H11 -1.139 -1.720 -0.885

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.50072.40682.34313.66441.08381.08761.08764.34974.02154.0215
C21.50071.20091.33912.33792.12312.13002.13003.21362.63732.6373
O32.40681.20092.23672.62722.56023.10153.10153.68052.62462.6246
O42.34311.33912.23671.42533.26292.61002.61002.00862.07242.0724
C53.66442.33792.62721.42534.45323.95963.95961.08341.08561.0856
H61.08382.12312.56023.26294.45321.78041.78045.25814.68134.6813
H71.08762.13003.10152.61003.95961.78041.75604.49504.20384.5583
H81.08762.13003.10152.61003.95961.78041.75604.49504.55834.2038
H94.34973.21363.68052.00861.08345.25814.49504.49501.78241.7824
H104.02152.63732.62462.07241.08564.68134.20384.55831.78241.7691
H114.02152.63732.62462.07241.08564.68134.55834.20381.78241.7691

picture of methyl acetate state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 125.597 C1 C2 O4 111.066
C2 C1 H6 109.399 C2 C1 H7 109.727
C2 C1 H8 109.727 C2 O4 C5 115.465
O3 C2 O4 123.337 O4 C5 H9 105.574
O4 C5 H10 110.523 O4 C5 H11 110.523
H6 C1 H7 110.154 H6 C1 H8 110.154
H7 C1 H8 107.659 H9 C5 H10 110.527
H9 C5 H11 110.527 H10 C5 H11 109.136
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability