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

using model chemistry: B2PLYP=FULL/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP=FULL/6-311G*
 hartrees
Energy at 0K-307.500728
Energy at 298.15K 
HF Energy-307.159010
Nuclear repulsion energy243.606297
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 B2PLYP=FULL/6-311G*
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' 3194 3194 9.83 65.29 0.69 0.82
2 A' 3144 3144 30.19 74.13 0.71 0.83
3 A' 3090 3090 18.44 85.36 0.11 0.19
4 A' 3083 3083 2.81 132.85 0.01 0.02
5 A' 3071 3071 19.00 116.73 0.01 0.02
6 A' 1808 1808 229.53 3.50 0.40 0.57
7 A' 1554 1554 6.30 1.55 0.74 0.85
8 A' 1532 1532 3.48 17.26 0.75 0.85
9 A' 1507 1507 16.04 10.85 0.70 0.82
10 A' 1457 1457 7.10 3.48 0.66 0.79
11 A' 1431 1431 51.19 0.96 0.74 0.85
12 A' 1416 1416 17.21 2.24 0.75 0.86
13 A' 1282 1282 411.86 0.46 0.36 0.53
14 A' 1156 1156 13.66 6.68 0.15 0.27
15 A' 1088 1088 118.33 2.88 0.73 0.85
16 A' 1027 1027 8.40 1.76 0.26 0.41
17 A' 957 957 8.58 1.99 0.18 0.30
18 A' 873 873 11.24 8.59 0.31 0.47
19 A' 644 644 6.51 8.33 0.33 0.50
20 A' 432 432 0.69 0.36 0.66 0.80
21 A' 373 373 9.38 3.15 0.32 0.48
22 A' 196 196 4.74 0.33 0.65 0.79
23 A" 3157 3157 49.30 12.68 0.75 0.86
24 A" 3150 3150 7.88 58.27 0.75 0.86
25 A" 3129 3129 3.96 98.76 0.75 0.86
26 A" 1521 1521 8.09 12.27 0.75 0.86
27 A" 1509 1509 10.12 11.20 0.75 0.86
28 A" 1322 1322 0.93 8.93 0.75 0.86
29 A" 1203 1203 4.10 0.93 0.75 0.86
30 A" 1082 1082 5.61 0.20 0.75 0.86
31 A" 824 824 0.48 0.19 0.75 0.86
32 A" 609 609 5.32 1.15 0.75 0.86
33 A" 271 271 1.07 0.03 0.75 0.86
34 A" 155 155 4.55 0.02 0.75 0.86
35 A" 69 69 0.19 0.28 0.75 0.86
36 A" 44 44 0.73 0.03 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26180.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 26180.5 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 B2PLYP=FULL/6-311G*
ABC
0.28072 0.06985 0.05773

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.309 0.028 0.000
C2 -0.907 -0.523 0.000
O3 0.000 0.479 0.000
O4 -0.608 -1.693 0.000
C5 1.384 0.067 0.000
C6 2.225 1.324 0.000
H7 -3.021 -0.793 0.000
H8 -2.465 0.655 0.879
H9 -2.465 0.655 -0.879
H10 1.566 -0.551 0.880
H11 1.566 -0.551 -0.880
H12 3.285 1.063 0.000
H13 2.020 1.928 -0.884
H14 2.020 1.928 0.884

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50672.35282.41943.69334.71581.08661.09081.09084.01604.01605.68964.80974.8097
C21.50671.35161.20732.36543.63572.13142.14172.14172.62512.62514.48233.91853.9185
O32.35281.35162.25591.44422.37993.27802.62252.62252.07132.07133.33702.63832.6383
O42.41941.20732.25592.65824.13862.57483.11933.11932.60912.60914.77074.56094.5609
C53.69332.36541.44422.65821.51234.48803.99123.99121.09111.09112.14692.15662.1566
C64.71583.63572.37994.13861.51235.65704.81804.81802.17362.17361.09181.09061.0906
H71.08662.13143.27802.57484.48805.65701.78291.78294.67714.67716.57405.79635.7963
H81.09082.14172.62253.11933.99124.81801.78291.75774.20734.56045.83114.98404.6617
H91.09082.14172.62253.11933.99124.81801.78291.75774.56044.20735.83114.66174.9840
H104.01602.62512.07132.60911.09112.17364.67714.20734.56041.76102.51763.07692.5205
H114.01602.62512.07132.60911.09112.17364.67714.56044.20731.76102.51762.52053.0769
H125.68964.48233.33704.77072.14691.09186.57405.83115.83112.51762.51761.76951.7695
H134.80973.91852.63834.56092.15661.09065.79634.98404.66173.07692.52051.76951.7686
H144.80973.91852.63834.56092.15661.09065.79634.66174.98402.52053.07691.76951.7686

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 110.684 C1 C2 O4 125.749
C2 C1 H7 109.479 C2 C1 H8 110.050
C2 C1 H9 110.050 C2 O3 C5 115.526
O3 C2 O4 123.567 O3 C5 C6 107.190
O3 C5 H10 108.776 O3 C5 H11 108.776
C5 C6 H12 110.007 C5 C6 H13 110.853
C5 C6 H14 110.853 C6 C5 H10 112.201
C6 C5 H11 112.201 H7 C1 H8 109.938
H7 C1 H9 109.938 H8 C1 H9 107.363
H10 C5 H11 107.611 H12 C6 H13 108.349
H12 C6 H14 108.349 H13 C6 H14 108.350
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability