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: PBEPBE/cc-pVTZ

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 PBEPBE/cc-pVTZ
 hartrees
Energy at 0K-268.167228
Energy at 298.15K-268.174263
HF Energy-268.167228
Nuclear repulsion energy176.573908
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 PBEPBE/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' 3053 3032 17.67      
2 A' 2983 2963 14.76      
3 A' 2980 2959 11.70      
4 A' 2938 2918 70.56      
5 A' 1746 1734 273.11      
6 A' 1463 1453 7.19      
7 A' 1445 1435 2.52      
8 A' 1368 1359 12.12      
9 A' 1343 1334 0.28      
10 A' 1337 1328 3.71      
11 A' 1150 1142 339.41      
12 A' 1098 1090 9.61      
13 A' 1002 995 25.69      
14 A' 823 817 10.31      
15 A' 765 760 1.01      
16 A' 368 365 5.24      
17 A' 217 216 6.25      
18 A" 3059 3038 27.65      
19 A" 3019 2998 7.04      
20 A" 1434 1424 6.79      
21 A" 1247 1239 1.05      
22 A" 1134 1127 3.84      
23 A" 987 980 0.12      
24 A" 782 777 1.36      
25 A" 347 345 17.45      
26 A" 222 221 1.39      
27 A" 49 49 0.71      

Unscaled Zero Point Vibrational Energy (zpe) 19180.4 cm-1
Scaled (by 0.9931) Zero Point Vibrational Energy (zpe) 19048.1 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 PBEPBE/cc-pVTZ
ABC
0.58860 0.09546 0.08477

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.187 -0.274 0.000
C2 -0.704 -0.567 0.000
O3 0.000 0.711 0.000
C4 1.346 0.625 0.000
O5 1.999 -0.394 0.000
H6 -2.750 -1.217 0.000
H7 -2.478 0.299 0.891
H8 -2.478 0.299 -0.891
H9 -0.390 -1.136 -0.887
H10 -0.390 -1.136 0.887
H11 1.764 1.651 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51252.39883.64634.18791.09871.09791.09792.18202.18204.3951
C21.51251.45872.37122.70792.14732.16582.16581.09931.09933.3177
O32.39881.45871.34922.28383.35872.66512.66512.08542.08541.9987
C43.64632.37121.34921.20974.49153.94013.94012.62692.62691.1081
O54.18792.70792.28381.20974.81964.61674.61672.65372.65372.0587
H61.09872.14733.35874.49154.81961.77951.77952.52252.52255.3481
H71.09792.16582.66513.94014.61671.77951.78133.09472.53344.5401
H81.09792.16582.66513.94014.61671.77951.78132.53343.09474.5401
H92.18201.09932.08542.62692.65372.52253.09472.53341.77353.6321
H102.18201.09932.08542.62692.65372.52252.53343.09471.77353.6321
H114.39513.31771.99871.10812.05875.34814.54014.54013.63213.6321

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 107.664 C1 C2 H9 112.353
C1 C2 H10 112.353 C2 C1 H6 109.623
C2 C1 H7 111.136 C2 C1 H8 111.136
C2 O3 C4 115.178 O3 C2 H9 108.405
O3 C2 H10 108.405 O3 C4 O5 126.296
O3 C4 H11 108.462 O5 C4 H11 125.243
H6 C1 H7 108.213 H6 C1 H8 108.213
H7 C1 H8 108.425 H9 C2 H10 107.536
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.284      
2 C 0.014      
3 O -0.173      
4 C 0.186      
5 O -0.275      
6 H 0.097      
7 H 0.102      
8 H 0.102      
9 H 0.089      
10 H 0.089      
11 H 0.053      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.045 0.491 0.000 2.103
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.110 4.526 0.000
y 4.526 -29.651 0.000
z 0.000 0.000 -29.587
Traceless
 xyz
x -3.491 4.526 0.000
y 4.526 1.697 0.000
z 0.000 0.000 1.794
Polar
3z2-r23.588
x2-y2-3.459
xy4.526
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.391 0.355 0.000
y 0.355 6.639 0.000
z 0.000 0.000 5.154


<r2> (average value of r2) Å2
<r2> 137.131
(<r2>)1/2 11.710