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All results from a given calculation for C4H8O2 (Ethyl acetate)

using model chemistry: MP2/TZVP

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/TZVP
 hartrees
Energy at 0K-306.960435
Energy at 298.15K 
HF Energy-305.979658
Nuclear repulsion energy243.849200
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/TZVP
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' 3231 3063 5.27 54.97 0.71 0.83
2 A' 3187 3021 19.05 62.50 0.73 0.84
3 A' 3111 2949 18.31 44.01 0.14 0.25
4 A' 3109 2947 0.48 186.26 0.01 0.02
5 A' 3096 2935 14.47 142.68 0.01 0.01
6 A' 1798 1705 223.01 7.98 0.29 0.45
7 A' 1547 1466 5.94 1.72 0.71 0.83
8 A' 1526 1447 3.13 13.17 0.73 0.85
9 A' 1502 1423 12.74 8.53 0.69 0.82
10 A' 1460 1383 4.58 2.74 0.67 0.80
11 A' 1429 1355 46.30 0.63 0.74 0.85
12 A' 1417 1343 17.87 1.34 0.75 0.86
13 A' 1289 1222 430.39 0.20 0.74 0.85
14 A' 1161 1101 8.64 8.88 0.12 0.21
15 A' 1105 1047 100.88 2.95 0.71 0.83
16 A' 1033 979 11.34 1.92 0.21 0.35
17 A' 964 913 8.28 2.38 0.21 0.35
18 A' 880 834 15.18 8.40 0.25 0.40
19 A' 650 616 6.16 8.14 0.31 0.47
20 A' 438 415 0.62 0.34 0.70 0.83
21 A' 377 357 7.93 2.98 0.29 0.45
22 A' 199 189 4.93 0.31 0.61 0.75
23 A" 3199 3032 28.74 21.47 0.75 0.86
24 A" 3196 3029 3.98 48.50 0.75 0.86
25 A" 3164 3000 8.09 69.84 0.75 0.86
26 A" 1505 1427 6.57 9.59 0.75 0.86
27 A" 1495 1417 8.71 8.89 0.75 0.86
28 A" 1316 1248 1.09 9.48 0.75 0.86
29 A" 1205 1143 3.63 0.85 0.75 0.86
30 A" 1076 1020 3.10 0.33 0.75 0.86
31 A" 832 788 0.13 0.19 0.75 0.86
32 A" 592 561 5.21 1.47 0.75 0.86
33 A" 268 254 1.00 0.08 0.75 0.86
34 A" 150 142 4.94 0.01 0.75 0.86
35 A" 66 63 0.24 0.39 0.75 0.86
36 A" 16i 16i 0.63 0.11 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26277.8 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 24908.8 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/TZVP
ABC
0.28075 0.07015 0.05794

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.306 0.039 0.000
C2 -0.909 -0.515 0.000
O3 0.000 0.487 0.000
O4 -0.610 -1.689 0.000
C5 1.378 0.060 0.000
C6 2.229 1.306 0.000
H7 -3.018 -0.781 0.000
H8 -2.455 0.662 0.880
H9 -2.455 0.662 -0.880
H10 1.557 -0.555 0.882
H11 1.557 -0.555 -0.882
H12 3.284 1.027 0.000
H13 2.031 1.908 -0.885
H14 2.031 1.908 0.885

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50312.34962.42123.68434.70951.08551.08901.08904.00734.00735.67684.80524.8052
C21.50311.35311.21172.35813.62842.12532.13342.13342.61962.61964.46733.91113.9111
O32.34961.35312.26061.44242.37503.27342.61402.61402.07112.07113.32772.63182.6318
O42.42121.21172.26062.64854.12752.57263.11583.11582.60082.60084.74814.54974.5497
C53.68432.35811.44242.64851.50884.47523.97853.97851.09031.09032.13712.15022.1502
C64.70953.62842.37504.12751.50885.64694.80984.80982.16612.16611.09031.08891.0889
H71.08552.12533.27342.57264.47525.64691.78211.78214.66464.66466.55565.78815.7881
H81.08902.13342.61403.11583.97854.80981.78211.76054.19304.54835.81734.97924.6556
H91.08902.13342.61403.11583.97854.80981.78211.76054.54834.19305.81734.65564.9792
H104.00732.61962.07112.60081.09032.16614.66464.19304.54831.76392.50233.06802.5078
H114.00732.61962.07112.60081.09032.16614.66464.54834.19301.76392.50232.50783.0680
H125.67684.46733.32774.74812.13711.09036.55565.81735.81732.50232.50231.76871.7687
H134.80523.91112.63184.54972.15021.08895.78814.97924.65563.06802.50781.76871.7709
H144.80523.91112.63184.54972.15021.08895.78814.65564.97922.50783.06801.76871.7709

picture of Ethyl acetate state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 110.591 C1 C2 O4 125.880
C2 C1 H7 109.313 C2 C1 H8 109.751
C2 C1 H9 109.751 C2 O3 C5 114.992
O3 C2 O4 123.529 O3 C5 C6 107.149
O3 C5 H10 108.923 O3 C5 H11 108.923
C5 C6 H12 109.565 C5 C6 H13 110.693
C5 C6 H14 110.693 C6 C5 H10 111.896
C6 C5 H11 111.896 H7 C1 H8 110.077
H7 C1 H9 110.077 H8 C1 H9 107.856
H10 C5 H11 107.986 H12 C6 H13 108.511
H12 C6 H14 108.511 H13 C6 H14 108.810
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability