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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-267.610798
Energy at 298.15K-267.617644
HF Energy-266.833327
Nuclear repulsion energy180.432560
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' 3204 3051 24.00      
2 A' 3204 3051 0.28      
3 A' 3095 2947 26.80      
4 A' 3092 2944 1.53      
5 A' 1856 1767 210.55      
6 A' 1546 1472 7.02      
7 A' 1526 1453 14.57      
8 A' 1514 1441 14.84      
9 A' 1453 1383 61.18      
10 A' 1331 1268 320.76      
11 A' 1237 1178 2.13      
12 A' 1114 1061 65.95      
13 A' 1017 969 3.07      
14 A' 879 837 17.99      
15 A' 655 624 8.45      
16 A' 430 410 6.60      
17 A' 293 279 12.53      
18 A" 3178 3026 22.33      
19 A" 3165 3014 5.99      
20 A" 1535 1462 5.68      
21 A" 1524 1452 7.39      
22 A" 1201 1144 1.60      
23 A" 1096 1043 7.14      
24 A" 609 580 8.36      
25 A" 182 173 7.02      
26 A" 154 147 0.87      
27 A" 77 73 0.42      

Unscaled Zero Point Vibrational Energy (zpe) 20082.3 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 19124.4 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
0.33753 0.13896 0.10223

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 1.499 0.000
C2 0.000 0.492 0.000
O3 -1.187 0.750 0.000
O4 0.490 -0.772 0.000
C5 -0.517 -1.801 0.000
H6 0.702 2.507 0.000
H7 1.752 1.353 0.885
H8 1.752 1.353 -0.885
H9 0.035 -2.743 0.000
H10 -1.146 -1.721 0.891
H11 -1.146 -1.721 -0.891

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.50802.42852.35763.68541.09191.09561.09564.37924.03884.0388
C21.50801.21501.35572.35112.13372.14302.14303.23532.64722.6472
O32.42851.21502.26452.63752.58073.12823.12823.70022.62702.6270
O42.35761.35572.26451.44013.28582.62482.62482.02282.09102.0910
C53.68542.35112.63751.44014.47773.98493.98491.09151.09391.0939
H61.09192.13372.58073.28584.47771.79341.79345.29224.70004.7000
H71.09562.14303.12822.62483.98491.79341.76954.52824.22464.5828
H81.09562.14303.12822.62483.98491.79341.76954.52824.58284.2246
H94.37923.23533.70022.02281.09155.29224.52824.52821.79821.7982
H104.03882.64722.62702.09101.09394.70004.22464.58281.79821.7829
H114.03882.64722.62702.09101.09394.70004.58284.22461.79821.7829

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 125.877 C1 C2 O4 110.713
C2 C1 H6 109.265 C2 C1 H7 109.777
C2 C1 H8 109.777 C2 O4 C5 114.452
O3 C2 O4 123.410 O4 C5 H9 105.243
O4 C5 H10 110.467 O4 C5 H11 110.467
H6 C1 H7 110.142 H6 C1 H8 110.142
H7 C1 H8 107.722 H9 C5 H10 110.733
H9 C5 H11 110.733 H10 C5 H11 109.159
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability