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

using model chemistry: CCSD/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 CCSD/TZVP
 hartrees
Energy at 0K-307.004659
Energy at 298.15K 
HF Energy-305.980590
Nuclear repulsion energy243.975296
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 CCSD/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' 3202 3056 8.20      
2 A' 3152 3008 27.23      
3 A' 3096 2954 16.65      
4 A' 3091 2950 2.83      
5 A' 3075 2935 16.97      
6 A' 1844 1760 259.91      
7 A' 1553 1483 5.01      
8 A' 1528 1459 2.82      
9 A' 1506 1437 10.98      
10 A' 1473 1406 2.76      
11 A' 1443 1377 56.42      
12 A' 1428 1363 12.70      
13 A' 1313 1253 436.85      
14 A' 1168 1114 15.01      
15 A' 1116 1065 85.72      
16 A' 1040 992 8.72      
17 A' 968 924 6.57      
18 A' 891 851 13.26      
19 A' 655 625 7.99      
20 A' 439 419 0.77      
21 A' 380 363 8.54      
22 A' 200 191 5.02      
23 A" 3164 3020 33.01      
24 A" 3164 3020 16.60      
25 A" 3137 2994 4.31      
26 A" 1508 1439 5.38      
27 A" 1498 1430 7.41      
28 A" 1322 1262 1.38      
29 A" 1212 1157 3.77      
30 A" 1086 1036 3.41      
31 A" 832 794 0.01      
32 A" 599 572 7.43      
33 A" 263 251 1.03      
34 A" 147 140 4.94      
35 A" 70 67 0.24      
36 A" 33 32 0.59      

Unscaled Zero Point Vibrational Energy (zpe) 26297.7 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 25098.5 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 CCSD/TZVP
ABC
0.28213 0.07001 0.05791

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.309 0.030 0.000
C2 -0.905 -0.519 0.000
O3 0.000 0.480 0.000
O4 -0.609 -1.687 0.000
C5 1.378 0.065 0.000
C6 2.227 1.318 0.000
H7 -3.017 -0.794 0.000
H8 -2.459 0.653 0.882
H9 -2.459 0.653 -0.882
H10 1.564 -0.549 0.883
H11 1.564 -0.549 -0.883
H12 3.284 1.043 0.000
H13 2.025 1.920 -0.887
H14 2.025 1.920 0.887

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50662.35212.41573.68684.71471.08691.09061.09064.01444.01445.68334.81044.8104
C21.50661.34791.20492.35683.63092.12992.13662.13662.62312.62314.47073.91433.9143
O32.35211.34792.25011.43902.37913.27542.61812.61812.07012.07013.33152.63842.6384
O42.41571.20492.25012.64834.13092.56883.11083.11082.60662.60664.75394.55304.5530
C53.68682.35681.43902.64831.51344.47863.98073.98071.09131.09132.14212.15572.1557
C64.71473.63092.37914.13091.51345.65344.81404.81402.16872.16871.09201.09081.0908
H71.08692.12993.27542.56884.47865.65341.78471.78474.67264.67266.56345.79485.7948
H81.09062.13662.61813.11083.98074.81401.78471.76384.19934.55505.82294.98374.6594
H91.09062.13662.61813.11083.98074.81401.78471.76384.55504.19935.82294.65944.9837
H104.01442.62312.07012.60661.09132.16874.67264.19934.55501.76532.50403.07262.5120
H114.01442.62312.07012.60661.09132.16874.67264.55504.19931.76532.50402.51203.0726
H125.68334.47073.33154.75392.14211.09206.56345.82295.82292.50402.50401.77191.7719
H134.81043.91432.63844.55302.15571.09085.79484.98374.65943.07262.51201.77191.7735
H144.81043.91432.63844.55302.15571.09085.79484.65944.98372.51203.07261.77191.7735

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 110.854 C1 C2 O4 125.616
C2 C1 H7 109.355 C2 C1 H8 109.669
C2 C1 H9 109.669 C2 O3 C5 115.449
O3 C2 O4 123.530 O3 C5 C6 107.355
O3 C5 H10 109.020 O3 C5 H11 109.020
C5 C6 H12 109.544 C5 C6 H13 110.699
C5 C6 H14 110.699 C6 C5 H10 111.717
C6 C5 H11 111.717 H7 C1 H8 110.100
H7 C1 H9 110.100 H8 C1 H9 107.930
H10 C5 H11 107.958 H12 C6 H13 108.538
H12 C6 H14 108.538 H13 C6 H14 108.765
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability