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

using model chemistry: mPW1PW91/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-268.334295
Energy at 298.15K-268.341017
Nuclear repulsion energy181.440276
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/cc-pVDZ
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 3083 3.52      
2 A' 3201 3068 12.86      
3 A' 3086 2957 2.31      
4 A' 3075 2946 28.80      
5 A' 1864 1787 246.94      
6 A' 1479 1417 5.96      
7 A' 1462 1401 45.91      
8 A' 1444 1384 12.81      
9 A' 1384 1326 107.91      
10 A' 1295 1241 279.90      
11 A' 1203 1153 1.89      
12 A' 1104 1058 56.46      
13 A' 990 949 1.75      
14 A' 881 844 16.80      
15 A' 655 627 7.17      
16 A' 424 406 6.26      
17 A' 286 274 11.49      
18 A" 3169 3037 3.14      
19 A" 3163 3031 18.62      
20 A" 1458 1397 9.39      
21 A" 1451 1390 7.60      
22 A" 1168 1119 0.86      
23 A" 1056 1012 9.03      
24 A" 608 583 4.54      
25 A" 181 173 6.29      
26 A" 120 115 0.19      
27 A" 50 47 0.64      

Unscaled Zero Point Vibrational Energy (zpe) 19734.8 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 18911.9 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/cc-pVDZ
ABC
0.34172 0.14028 0.10333

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.121 1.489 0.000
C2 0.000 0.491 0.000
O3 -1.177 0.749 0.000
O4 0.479 -0.768 0.000
C5 -0.515 -1.789 0.000
H6 0.709 2.502 0.000
H7 1.755 1.338 0.884
H8 1.755 1.338 -0.884
H9 0.032 -2.738 0.000
H10 -1.152 -1.714 0.891
H11 -1.152 -1.714 -0.891

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.50102.41412.34643.66341.09381.09841.09844.36484.02784.0278
C21.50101.20531.34702.33712.13252.14022.14023.22862.64282.6428
O32.41411.20532.24662.62362.57443.11883.11883.69092.62012.6201
O42.34641.34702.24661.42503.27822.61642.61642.01992.08622.0862
C53.66342.33712.62361.42504.46213.96413.96411.09481.09851.0985
H61.09382.13252.57443.27824.46211.79761.79765.28344.69414.6941
H71.09842.14023.11882.61643.96411.79761.76814.51284.21574.5742
H81.09842.14023.11882.61643.96411.79761.76814.51284.57424.2157
H94.36483.22863.69092.01991.09485.28344.51284.51281.80121.8012
H104.02782.64282.62012.08621.09854.69414.21574.57421.80121.7826
H114.02782.64282.62012.08621.09854.69414.57424.21571.80121.7826

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 125.913 C1 C2 O4 110.840
C2 C1 H6 109.543 C2 C1 H7 109.873
C2 C1 H8 109.873 C2 O4 C5 114.917
O3 C2 O4 123.247 O4 C5 H9 105.825
O4 C5 H10 110.866 O4 C5 H11 110.866
H6 C1 H7 110.167 H6 C1 H8 110.167
H7 C1 H8 107.190 H9 C5 H10 110.414
H9 C5 H11 110.414 H10 C5 H11 108.458
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.048      
2 C 0.147      
3 O -0.266      
4 O -0.284      
5 C 0.067      
6 H 0.067      
7 H 0.074      
8 H 0.074      
9 H 0.054      
10 H 0.057      
11 H 0.057      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.508 -0.903 0.000 1.758
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.888 -2.608 0.000
y -2.608 -31.422 0.000
z 0.000 0.000 -28.858
Traceless
 xyz
x 0.252 -2.608 0.000
y -2.608 -2.050 0.000
z 0.000 0.000 1.797
Polar
3z2-r23.594
x2-y21.535
xy-2.608
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> 117.844
(<r2>)1/2 10.856