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

using model chemistry: mPW1PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31G**
 hartrees
Energy at 0K-268.324699
Energy at 298.15K-268.331433
Nuclear repulsion energy181.503046
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 mPW1PW91/6-31G**
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' 3220 3064 4.78      
2 A' 3206 3050 15.01      
3 A' 3095 2945 2.27      
4 A' 3088 2938 27.29      
5 A' 1872 1782 233.92      
6 A' 1514 1441 7.91      
7 A' 1491 1418 31.57      
8 A' 1483 1411 11.11      
9 A' 1412 1343 87.05      
10 A' 1312 1249 306.09      
11 A' 1219 1160 1.12      
12 A' 1110 1056 53.88      
13 A' 1001 953 1.23      
14 A' 884 841 15.82      
15 A' 655 623 6.70      
16 A' 424 404 6.44      
17 A' 286 272 12.91      
18 A" 3173 3019 7.47      
19 A" 3172 3018 16.22      
20 A" 1500 1427 8.33      
21 A" 1490 1418 7.71      
22 A" 1187 1129 0.76      
23 A" 1070 1018 9.51      
24 A" 609 580 5.68      
25 A" 183 175 6.94      
26 A" 122 116 0.18      
27 A" 53 50 0.57      

Unscaled Zero Point Vibrational Energy (zpe) 19915.8 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 18949.9 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 mPW1PW91/6-31G**
ABC
0.34185 0.14027 0.10329

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.121 1.490 0.000
C2 0.000 0.489 0.000
O3 -1.179 0.749 0.000
O4 0.480 -0.768 0.000
C5 -0.514 -1.791 0.000
H6 0.707 2.496 0.000
H7 1.751 1.345 0.880
H8 1.751 1.345 -0.880
H9 0.030 -2.734 0.000
H10 -1.146 -1.715 0.886
H11 -1.146 -1.715 -0.886

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.50272.41582.34743.66541.08761.09201.09204.36244.02464.0246
C21.50271.20691.34592.33692.12792.13832.13833.22282.63772.6377
O32.41581.20692.24802.62522.57073.11653.11653.68622.61862.6186
O42.34741.34592.24801.42603.27212.61792.61792.01642.08032.0803
C53.66542.33692.62521.42604.45723.96673.96671.08841.09151.0915
H61.08762.12792.57073.27214.45721.78601.78605.27334.68544.6854
H71.09202.13833.11652.61793.96671.78601.75934.51334.21394.5690
H81.09202.13833.11652.61793.96671.78601.75934.51334.56904.2139
H94.36243.22283.68622.01641.08845.27334.51334.51331.79061.7906
H104.02462.63772.61862.08031.09154.68544.21394.56901.79061.7726
H114.02462.63772.61862.08031.09154.68544.56904.21391.79061.7726

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 125.794 C1 C2 O4 110.871
C2 C1 H6 109.423 C2 C1 H7 109.988
C2 C1 H8 109.988 C2 O4 C5 114.905
O3 C2 O4 123.335 O4 C5 H9 105.848
O4 C5 H10 110.746 O4 C5 H11 110.746
H6 C1 H7 110.047 H6 C1 H8 110.047
H7 C1 H8 107.323 H9 C5 H10 110.457
H9 C5 H11 110.457 H10 C5 H11 108.583
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.468      
2 C 0.597      
3 O -0.476      
4 O -0.460      
5 C -0.155      
6 H 0.170      
7 H 0.170      
8 H 0.170      
9 H 0.145      
10 H 0.154      
11 H 0.154      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.531 -0.934 0.000 1.794
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.775 -2.683 0.000
y -2.683 -31.371 0.000
z 0.000 0.000 -28.803
Traceless
 xyz
x 0.312 -2.683 0.000
y -2.683 -2.082 0.000
z 0.000 0.000 1.770
Polar
3z2-r23.539
x2-y21.596
xy-2.683
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 117.792
(<r2>)1/2 10.853