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

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-267.776164
Energy at 298.15K-267.783010
HF Energy-266.863518
Nuclear repulsion energy182.096038
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 MP2/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3253 3072 2.60      
2 A' 3246 3065 9.21      
3 A' 3127 2953 1.54      
4 A' 3120 2947 20.87      
5 A' 1833 1731 180.92      
6 A' 1529 1445 7.72      
7 A' 1500 1417 21.15      
8 A' 1495 1412 9.74      
9 A' 1416 1337 66.13      
10 A' 1303 1231 303.72      
11 A' 1227 1159 1.34      
12 A' 1103 1042 59.28      
13 A' 1003 947 1.26      
14 A' 876 828 17.94      
15 A' 653 617 6.38      
16 A' 425 401 6.41      
17 A' 292 276 11.21      
18 A" 3217 3038 1.46      
19 A" 3216 3037 12.83      
20 A" 1515 1431 7.40      
21 A" 1503 1420 6.49      
22 A" 1201 1134 1.04      
23 A" 1076 1017 6.67      
24 A" 614 580 4.59      
25 A" 185 175 5.46      
26 A" 160 151 0.87      
27 A" 65 62 0.38      

Unscaled Zero Point Vibrational Energy (zpe) 20076.9 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 18962.7 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 MP2/6-31G(2df,p)
ABC
0.33970 0.14133 0.10366

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.124 1.485 0.000
C2 0.000 0.486 0.000
O3 -1.181 0.744 0.000
O4 0.492 -0.770 0.000
C5 -0.524 -1.778 0.000
H6 0.715 2.491 0.000
H7 1.751 1.334 0.879
H8 1.751 1.334 -0.879
H9 0.005 -2.727 0.000
H10 -1.153 -1.690 0.885
H11 -1.153 -1.690 -0.885

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.50372.42162.34183.65611.08651.09011.09014.35844.00624.0062
C21.50371.20871.34892.32472.12842.13482.13483.21382.61712.6171
O32.42161.20872.25562.60612.57833.11733.11733.66822.58962.5896
O42.34181.34892.25561.43153.26862.60502.60502.01712.08212.0821
C53.65612.32472.60611.43154.44573.95453.95451.08681.08961.0896
H61.08652.12842.57833.26864.44571.78471.78475.26664.66404.6640
H71.09012.13483.11732.60503.95451.78471.75864.50754.19264.5489
H81.09012.13483.11732.60503.95451.78471.75864.50754.54894.1926
H94.35843.21383.66822.01711.08685.26664.50754.50751.78961.7896
H104.00622.61712.58962.08211.08964.66404.19264.54891.78961.7707
H114.00622.61712.58962.08211.08964.66404.54894.19261.78961.7707

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 126.106 C1 C2 O4 110.239
C2 C1 H6 109.453 C2 C1 H7 109.752
C2 C1 H8 109.752 C2 O4 C5 113.427
O3 C2 O4 123.656 O4 C5 H9 105.634
O4 C5 H10 110.627 O4 C5 H11 110.627
H6 C1 H7 110.158 H6 C1 H8 110.158
H7 C1 H8 107.545 H9 C5 H10 110.625
H9 C5 H11 110.625 H10 C5 H11 108.694
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability