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

using model chemistry: B1B95/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 B1B95/cc-pVDZ
 hartrees
Energy at 0K-268.293510
Energy at 298.15K-268.300041
Nuclear repulsion energy182.067763
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 B1B95/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' 3209 3084 3.76      
2 A' 3192 3068 13.67      
3 A' 3078 2958 2.23      
4 A' 3065 2946 28.63      
5 A' 1857 1785 240.20      
6 A' 1469 1412 5.27      
7 A' 1447 1390 53.41      
8 A' 1433 1378 13.92      
9 A' 1374 1320 103.50      
10 A' 1286 1236 268.74      
11 A' 1187 1141 2.80      
12 A' 1095 1053 57.85      
13 A' 982 944 1.75      
14 A' 877 843 16.43      
15 A' 651 625 7.23      
16 A' 416 399 6.03      
17 A' 277 267 11.68      
18 A" 3159 3037 3.26      
19 A" 3151 3028 19.56      
20 A" 1441 1385 15.42      
21 A" 1440 1384 0.76      
22 A" 1158 1113 0.99      
23 A" 1046 1006 8.46      
24 A" 603 579 4.27      
25 A" 179 172 6.29      
26 A" 54 52 0.19      
27 A" 32 31 0.48      

Unscaled Zero Point Vibrational Energy (zpe) 19577.7 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 18818.1 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 B1B95/cc-pVDZ
ABC
0.34219 0.14063 0.10355

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.113 1.494 0.000
C2 0.000 0.489 0.000
O3 -1.180 0.738 0.000
O4 0.486 -0.767 0.000
C5 -0.510 -1.787 0.000
H6 0.694 2.504 0.000
H7 1.748 1.348 0.884
H8 1.748 1.348 -0.884
H9 0.034 -2.736 0.000
H10 -1.147 -1.708 0.890
H11 -1.147 -1.708 -0.890

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.49942.41442.34653.66031.09321.09791.09794.36624.01954.0195
C21.49941.20601.34742.33252.13072.13862.13863.22612.63402.6340
O32.41441.20602.24572.61252.57483.11863.11863.68072.60332.6033
O42.34651.34742.24571.42543.27762.61662.61662.02082.08512.0851
C53.66032.33252.61251.42544.45633.96303.96301.09431.09821.0982
H61.09322.13072.57483.27764.45631.79651.79655.28194.68224.6822
H71.09792.13863.11862.61663.96301.79651.76724.51704.20994.5684
H81.09792.13863.11862.61663.96301.79651.76724.51704.56844.2099
H94.36623.22613.68072.02081.09435.28194.51704.51701.80191.8019
H104.01952.63402.60332.08511.09824.68224.20994.56841.80191.7808
H114.01952.63402.60332.08511.09824.68224.56844.20991.80191.7808

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 126.018 C1 C2 O4 110.914
C2 C1 H6 109.539 C2 C1 H7 109.886
C2 C1 H8 109.886 C2 O4 C5 114.506
O3 C2 O4 123.069 O4 C5 H9 105.886
O4 C5 H10 110.764 O4 C5 H11 110.764
H6 C1 H7 110.154 H6 C1 H8 110.154
H7 C1 H8 107.193 H9 C5 H10 110.541
H9 C5 H11 110.541 H10 C5 H11 108.352
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.011      
2 C 0.125      
3 O -0.255      
4 O -0.275      
5 C 0.093      
6 H 0.056      
7 H 0.064      
8 H 0.064      
9 H 0.044      
10 H 0.048      
11 H 0.048      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.490 -0.866 0.000 1.723
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.945 4.239 0.000
y 4.239 -26.252 0.000
z 0.000 0.000 -28.813
Traceless
 xyz
x -4.412 4.239 0.000
y 4.239 4.127 0.000
z 0.000 0.000 0.286
Polar
3z2-r20.571
x2-y2-5.693
xy4.239
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.919 0.449 0.000
y 0.449 6.776 0.000
z 0.000 0.000 4.376


<r2> (average value of r2) Å2
<r2> 118.796
(<r2>)1/2 10.899