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

using model chemistry: MP3/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 MP3/cc-pVTZ
 hartrees
Energy at 0K-307.163630
Energy at 298.15K 
HF Energy-305.991083
Nuclear repulsion energy245.007678
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 MP3/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' 3219 3041 5.34      
2 A' 3171 2995 20.49      
3 A' 3109 2937 15.21      
4 A' 3104 2932 1.12      
5 A' 3089 2918 13.78      
6 A' 1890 1785 263.17      
7 A' 1551 1465 5.02      
8 A' 1522 1438 2.78      
9 A' 1496 1413 13.51      
10 A' 1462 1381 14.41      
11 A' 1430 1351 101.25      
12 A' 1412 1334 20.90      
13 A' 1328 1254 403.68      
14 A' 1168 1103 26.34      
15 A' 1128 1066 63.67      
16 A' 1034 977 6.87      
17 A' 980 926 4.98      
18 A' 894 844 8.80      
19 A' 660 623 9.30      
20 A' 436 412 0.90      
21 A' 381 360 9.47      
22 A' 200 189 5.10      
23 A" 3177 3001 9.82      
24 A" 3177 3001 27.55      
25 A" 3148 2974 4.33      
26 A" 1509 1426 6.05      
27 A" 1503 1420 7.23      
28 A" 1325 1252 1.62      
29 A" 1205 1139 3.77      
30 A" 1090 1030 5.57      
31 A" 823 777 0.35      
32 A" 624 590 5.64      
33 A" 267 252 1.04      
34 A" 155 146 4.47      
35 A" 78 73 0.08      
36 A" 64 61 0.58      

Unscaled Zero Point Vibrational Energy (zpe) 26402.4 cm-1
Scaled (by 0.9447) Zero Point Vibrational Energy (zpe) 24942.3 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 MP3/cc-pVTZ
ABC
0.28531 0.07054 0.05839

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.303 0.031 0.000
C2 -0.901 -0.512 0.000
O3 0.000 0.480 0.000
O4 -0.608 -1.673 0.000
C5 1.369 0.059 0.000
C6 2.225 1.304 0.000
H7 -3.008 -0.790 0.000
H8 -2.453 0.656 0.877
H9 -2.453 0.656 -0.877
H10 1.551 -0.557 0.878
H11 1.551 -0.557 -0.878
H12 3.278 1.028 0.000
H13 2.027 1.908 -0.883
H14 2.027 1.908 0.883

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50282.34572.40393.67134.70341.08331.08751.08753.99603.99605.66854.80054.8005
C21.50281.33951.19832.34053.61562.12532.13102.13102.60522.60524.45353.89983.8998
O32.34571.33952.23691.43192.37333.26532.61122.61122.06202.06203.32332.63232.6323
O42.40391.19832.23692.62784.11002.55773.09863.09862.58392.58394.73204.53304.5330
C53.67132.34051.43192.62781.51184.45853.96643.96641.08801.08802.14102.15262.1526
C64.70343.61562.37334.11001.51185.63724.80384.80382.16602.16601.08821.08771.0877
H71.08332.12533.26532.55774.45855.63721.78061.78064.64894.64896.54375.78055.7805
H81.08752.13102.61123.09863.96644.80381.78061.75474.18394.53735.80954.97344.6516
H91.08752.13102.61123.09863.96644.80381.78061.75474.53734.18395.80954.65164.9734
H103.99602.60522.06202.58391.08802.16604.64894.18394.53731.75612.50303.06692.5112
H113.99602.60522.06202.58391.08802.16604.64894.53734.18391.75612.50302.51123.0669
H125.66854.45353.32334.73202.14101.08826.54375.80955.80952.50302.50301.76611.7661
H134.80053.89982.63234.53302.15261.08775.78054.97344.65163.06692.51121.76611.7651
H144.80053.89982.63234.53302.15261.08775.78054.65164.97342.51123.06691.76611.7651

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 111.102 C1 C2 O4 125.365
C2 C1 H7 109.466 C2 C1 H8 109.670
C2 C1 H9 109.670 C2 O3 C5 115.193
O3 C2 O4 123.533 O3 C5 C6 107.425
O3 C5 H10 109.066 O3 C5 H11 109.066
C5 C6 H12 109.791 C5 C6 H13 110.744
C5 C6 H14 110.744 C6 C5 H10 111.810
C6 C5 H11 111.810 H7 C1 H8 110.222
H7 C1 H9 110.222 H8 C1 H9 107.567
H10 C5 H11 107.616 H12 C6 H13 108.518
H12 C6 H14 108.518 H13 C6 H14 108.461
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability