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

using model chemistry: B3LYP/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/cc-pVTZ
 hartrees
Energy at 0K-268.495799
Energy at 298.15K-268.502512
Nuclear repulsion energy181.101788
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 B3LYP/cc-pVTZ
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' 3157 3052 6.90      
2 A' 3150 3045 15.04      
3 A' 3052 2950 5.32      
4 A' 3049 2947 25.87      
5 A' 1805 1745 245.19      
6 A' 1501 1451 8.41      
7 A' 1475 1426 20.51      
8 A' 1472 1423 10.58      
9 A' 1398 1352 43.52      
10 A' 1265 1223 332.04      
11 A' 1210 1169 1.15      
12 A' 1071 1035 80.94      
13 A' 984 951 1.27      
14 A' 856 827 19.70      
15 A' 644 622 5.15      
16 A' 424 409 5.93      
17 A' 282 272 11.99      
18 A" 3118 3013 21.12      
19 A" 3109 3005 5.53      
20 A" 1485 1436 9.37      
21 A" 1478 1429 6.23      
22 A" 1176 1137 1.18      
23 A" 1069 1033 6.47      
24 A" 610 590 5.28      
25 A" 178 172 6.30      
26 A" 128 124 0.40      
27 A" 45 44 0.27      

Unscaled Zero Point Vibrational Energy (zpe) 19594.9 cm-1
Scaled (by 0.9666) Zero Point Vibrational Energy (zpe) 18940.4 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 B3LYP/cc-pVTZ
ABC
0.34192 0.13855 0.10235

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.129 1.491 0.000
C2 0.000 0.495 0.000
O3 -1.174 0.764 0.000
O4 0.473 -0.770 0.000
C5 -0.522 -1.807 0.000
H6 0.723 2.498 0.000
H7 1.757 1.342 0.878
H8 1.757 1.342 -0.878
H9 0.030 -2.742 0.000
H10 -1.151 -1.734 0.886
H11 -1.151 -1.734 -0.886

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.50562.41452.35473.68791.08531.09001.09004.37364.04754.0475
C21.50561.20421.35062.36012.12942.13912.13913.23722.66022.6602
O32.41451.20422.25062.65252.56963.11363.11363.70722.65082.6508
O42.35471.35062.25061.43633.27772.62332.62332.02092.08522.0852
C53.68792.36012.65251.43634.48103.98463.98461.08571.08871.0887
H61.08532.12942.56963.27774.48101.78231.78235.28554.71214.7121
H71.09002.13913.11362.62333.98461.78231.75604.52024.23274.5855
H81.09002.13913.11362.62333.98461.78231.75604.52024.58554.2327
H94.37363.23723.70722.02091.08575.28554.52024.52021.78721.7872
H104.04752.66022.65082.08521.08874.71214.23274.58551.78721.7713
H114.04752.66022.65082.08521.08874.71214.58554.23271.78721.7713

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 125.648 C1 C2 O4 110.946
C2 C1 H6 109.478 C2 C1 H7 109.969
C2 C1 H8 109.969 C2 O4 C5 115.712
O3 C2 O4 123.406 O4 C5 H9 105.669
O4 C5 H10 110.592 O4 C5 H11 110.592
H6 C1 H7 110.041 H6 C1 H8 110.041
H7 C1 H8 107.318 H9 C5 H10 110.549
H9 C5 H11 110.549 H10 C5 H11 108.872
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.285     -0.523
2 C 0.300     0.146
3 O -0.314     0.147
4 O -0.239     0.147
5 C -0.096     0.058
6 H 0.118     0.058
7 H 0.111     -0.029
8 H 0.111     -0.392
9 H 0.106     -0.553
10 H 0.094     0.828
11 H 0.094     0.113


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.579 -0.974 0.000 1.855
CHELPG        
AIM        
ESP -2.365 -3.853 0.000 4.521


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.423 -2.799 0.000
y -2.799 -32.318 0.000
z 0.000 0.000 -29.358
Traceless
 xyz
x 0.415 -2.799 0.000
y -2.799 -2.427 0.000
z 0.000 0.000 2.012
Polar
3z2-r24.024
x2-y21.895
xy-2.799
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.285 -0.194 0.000
y -0.194 7.856 0.000
z 0.000 0.000 4.899


<r2> (average value of r2) Å2
<r2> 118.900
(<r2>)1/2 10.904