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

using model chemistry: CCD/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 CCD/6-31G*
 hartrees
Energy at 0K-267.599895
Energy at 298.15K-267.606787
HF Energy-266.834198
Nuclear repulsion energy181.406371
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 CCD/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' 3217 3045 7.97      
2 A' 3216 3044 14.17      
3 A' 3104 2938 25.47      
4 A' 3102 2936 0.78      
5 A' 1899 1797 222.87      
6 A' 1551 1468 6.93      
7 A' 1529 1447 17.02      
8 A' 1522 1440 17.30      
9 A' 1458 1380 76.18      
10 A' 1347 1275 331.79      
11 A' 1244 1177 2.11      
12 A' 1129 1068 59.27      
13 A' 1026 971 2.25      
14 A' 892 844 19.35      
15 A' 662 627 9.22      
16 A' 434 411 6.59      
17 A' 295 280 12.72      
18 A" 3189 3018 21.22      
19 A" 3178 3008 4.88      
20 A" 1540 1457 5.96      
21 A" 1527 1445 7.78      
22 A" 1208 1143 1.60      
23 A" 1102 1043 7.65      
24 A" 616 583 8.32      
25 A" 183 173 6.88      
26 A" 159 150 1.18      
27 A" 85 80 0.45      

Unscaled Zero Point Vibrational Energy (zpe) 20204.7 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 19123.8 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 CCD/6-31G*
ABC
0.33981 0.13924 0.10259

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.132 1.470 0.000
C2 0.000 0.492 0.000
O3 -1.179 0.768 0.000
O4 0.482 -0.774 0.000
C5 -0.524 -1.784 0.000
H6 0.730 2.486 0.000
H7 1.758 1.318 0.885
H8 1.758 1.318 -0.885
H9 0.002 -2.742 0.000
H10 -1.157 -1.700 0.889
H11 -1.157 -1.700 -0.889

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.49562.41522.33623.65141.09201.09521.09524.36054.00954.0095
C21.49561.21131.35502.33602.12312.13482.13483.23362.63312.6331
O32.41521.21132.26722.63532.56823.11683.11683.70322.62342.6234
O42.33621.35502.26721.42603.26922.60572.60572.02522.08202.0820
C53.65142.33602.63531.42604.45043.95213.95211.09231.09451.0945
H61.09202.12312.56823.26924.45041.78971.78975.27774.67654.6765
H71.09522.13483.11682.60573.95211.78971.77094.51124.19604.5558
H81.09522.13483.11682.60573.95211.78971.77094.51124.55584.1960
H94.36053.23363.70322.02521.09235.27774.51124.51121.79411.7941
H104.00952.63312.62342.08201.09454.67654.19604.55581.79411.7781
H114.00952.63312.62342.08201.09454.67654.55584.19601.79411.7781

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 125.984 C1 C2 O4 109.982
C2 C1 H6 109.270 C2 C1 H7 110.009
C2 C1 H8 110.009 C2 O4 C5 114.249
O3 C2 O4 124.033 O4 C5 H9 106.310
O4 C5 H10 110.693 O4 C5 H11 110.693
H6 C1 H7 109.819 H6 C1 H8 109.819
H7 C1 H8 107.899 H9 C5 H10 110.252
H9 C5 H11 110.252 H10 C5 H11 108.639
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability