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All results from a given calculation for CH3COOCH3 (methyl acetate)

using model chemistry: QCISD/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 QCISD/6-31G**
 hartrees
Energy at 0K-267.659318
Energy at 298.15K-267.666165
HF Energy-266.843615
Nuclear repulsion energy 
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 QCISD/6-31G**
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' 3249 3059 9.33      
2 A' 3246 3056 17.71      
3 A' 3131 2947 13.41      
4 A' 3130 2946 18.86      
5 A' 1858 1749 207.70      
6 A' 1557 1466 6.31      
7 A' 1533 1444 12.30      
8 A' 1521 1432 8.59      
9 A' 1457 1372 54.47      
10 A' 1330 1252 331.21      
11 A' 1241 1168 2.71      
12 A' 1116 1051 67.11      
13 A' 1018 959 3.40      
14 A' 880 828 17.91      
15 A' 654 616 8.57      
16 A' 429 404 6.57      
17 A' 292 275 11.94      
18 A" 3219 3030 25.15      
19 A" 3211 3023 7.09      
20 A" 1545 1455 4.30      
21 A" 1535 1445 5.58      
22 A" 1206 1136 2.43      
23 A" 1097 1032 5.61      
24 A" 607 572 8.95      
25 A" 181 171 6.71      
26 A" 149 141 0.66      
27 A" 74 70 0.38      

Unscaled Zero Point Vibrational Energy (zpe) 20232.9 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 19047.3 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 QCISD/6-31G**
ABC
0.33800 0.13928 0.10240

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.123 1.498 0.000
C2 0.000 0.492 0.000
O3 -1.187 0.750 0.000
O4 0.490 -0.772 0.000
C5 -0.518 -1.798 0.000
H6 0.707 2.501 0.000
H7 1.748 1.350 0.880
H8 1.748 1.350 -0.880
H9 0.028 -2.737 0.000
H10 -1.144 -1.718 0.886
H11 -1.144 -1.718 -0.886

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.50782.42802.35683.68231.08581.08941.08944.37434.03314.0331
C21.50781.21451.35592.34832.12942.13672.13673.22922.64142.6414
O32.42801.21452.26482.63492.57883.12183.12183.69272.62242.6224
O42.35681.35592.26481.43833.28012.61942.61942.01842.08562.0856
C53.68232.34832.63491.43834.47023.97763.97761.08571.08831.0883
H61.08582.12942.57883.28014.47021.78391.78395.28164.69104.6910
H71.08942.13673.12182.61943.97761.78391.76094.52084.21584.5711
H81.08942.13673.12182.61943.97761.78391.76094.52084.57114.2158
H94.37433.22923.69272.01841.08575.28164.52084.52081.78841.7884
H104.03312.64142.62242.08561.08834.69104.21584.57111.78841.7727
H114.03312.64142.62242.08561.08834.69104.57114.21581.78841.7727

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 125.887 C1 C2 O4 110.660
C2 C1 H6 109.294 C2 C1 H7 109.662
C2 C1 H8 109.662 C2 O4 C5 114.334
O3 C2 O4 123.453 O4 C5 H9 105.346
O4 C5 H10 110.501 O4 C5 H11 110.501
H6 C1 H7 110.186 H6 C1 H8 110.186
H7 C1 H8 107.833 H9 C5 H10 110.699
H9 C5 H11 110.699 H10 C5 H11 109.063
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability