return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for HCOOC2H5 (Ethyl formate)

using model chemistry: CID/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS trans 1A'
Energy calculated at CID/6-311G*
 hartrees
Energy at 0K-267.579125
Energy at 298.15K-267.586499
HF Energy-266.890974
Nuclear repulsion energy179.173128
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 CID/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' 3234 3005 28.41      
2 A' 3196 2969 58.51      
3 A' 3185 2960 22.48      
4 A' 3155 2931 16.86      
5 A' 1933 1796 361.32      
6 A' 1607 1493 8.64      
7 A' 1579 1467 3.33      
8 A' 1519 1411 22.13      
9 A' 1485 1380 2.67      
10 A' 1477 1372 0.23      
11 A' 1322 1229 488.43      
12 A' 1202 1117 13.73      
13 A' 1105 1026 16.62      
14 A' 926 860 13.25      
15 A' 837 778 4.44      
16 A' 403 374 6.77      
17 A' 243 226 7.85      
18 A" 3249 3018 49.80      
19 A" 3225 2996 0.71      
20 A" 1566 1455 7.55      
21 A" 1380 1282 1.68      
22 A" 1252 1163 5.25      
23 A" 1121 1041 0.98      
24 A" 850 790 0.23      
25 A" 352 327 26.00      
26 A" 252 234 3.50      
27 A" 79 74 0.57      

Unscaled Zero Point Vibrational Energy (zpe) 20866.3 cm-1
Scaled (by 0.9291) Zero Point Vibrational Energy (zpe) 19386.9 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 CID/6-311G*
ABC
0.61288 0.09788 0.08712

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.164 -0.277 0.000
C2 -0.684 -0.569 0.000
O3 0.000 0.687 0.000
C4 1.322 0.627 0.000
O5 1.974 -0.366 0.000
H6 -2.727 -1.207 0.000
H7 -2.443 0.294 0.881
H8 -2.443 0.294 -0.881
H9 -0.381 -1.133 -0.878
H10 -0.381 -1.133 0.878
H11 1.736 1.637 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.50882.36893.60114.13901.08741.08631.08632.16412.16414.3440
C21.50881.43002.33512.66552.14052.14872.14871.08631.08633.2742
O32.36891.43001.32322.23733.32012.62682.62682.05612.05611.9788
C43.60112.33511.32321.18794.44483.88113.88112.60132.60131.0917
O54.13902.66552.23731.18794.77564.55244.55242.62752.62752.0172
H61.08742.14053.32014.44484.77561.76351.76352.50602.50605.2919
H71.08632.14872.62683.88114.55241.76351.76233.06322.50804.4770
H81.08632.14872.62683.88114.55241.76351.76232.50803.06324.4770
H92.16411.08632.05612.60132.62752.50603.06322.50801.75513.5949
H102.16411.08632.05612.60132.62752.50602.50803.06321.75513.5949
H114.34403.27421.97881.09172.01725.29194.47704.47703.59493.5949

picture of Ethyl formate state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 107.395 C1 C2 H9 111.976
C1 C2 H10 111.976 C2 C1 H6 110.011
C2 C1 H7 110.728 C2 C1 H8 110.728
C2 O3 C4 115.965 O3 C2 H9 108.825
O3 C2 H10 108.825 O3 C4 O5 125.898
O3 C4 H11 109.678 O5 C4 H11 124.424
H6 C1 H7 108.445 H6 C1 H8 108.445
H7 C1 H8 108.413 H9 C2 H10 107.768
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability