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: HSEh1PBE/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 HSEh1PBE/cc-pVTZ
 hartrees
Energy at 0K-268.201159
Energy at 298.15K-268.208344
HF Energy-268.201159
Nuclear repulsion energy178.416242
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 HSEh1PBE/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' 3137 3015 17.87      
2 A' 3068 2949 11.86      
3 A' 3059 2940 12.49      
4 A' 3044 2926 65.28      
5 A' 1832 1761 315.04      
6 A' 1515 1456 8.39      
7 A' 1492 1434 2.52      
8 A' 1423 1368 13.65      
9 A' 1400 1346 1.35      
10 A' 1389 1335 0.27      
11 A' 1240 1191 400.84      
12 A' 1140 1096 9.57      
13 A' 1050 1010 22.78      
14 A' 869 835 10.11      
15 A' 801 770 2.53      
16 A' 383 368 5.88      
17 A' 226 218 7.14      
18 A" 3142 3020 29.02      
19 A" 3107 2986 5.32      
20 A" 1480 1422 7.09      
21 A" 1298 1247 1.43      
22 A" 1180 1134 4.16      
23 A" 1051 1010 0.01      
24 A" 808 776 1.14      
25 A" 352 338 20.06      
26 A" 232 223 1.87      
27 A" 57 54 0.75      

Unscaled Zero Point Vibrational Energy (zpe) 19886.3 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 19112.7 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 HSEh1PBE/cc-pVTZ
ABC
0.60374 0.09731 0.08650

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.168 -0.280 0.000
C2 -0.691 -0.565 0.000
O3 0.000 0.697 0.000
C4 1.328 0.627 0.000
O5 1.980 -0.376 0.000
H6 -2.724 -1.219 0.000
H7 -2.456 0.289 0.884
H8 -2.456 0.289 -0.884
H9 -0.381 -1.131 -0.880
H10 -0.381 -1.131 0.880
H11 1.744 1.645 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.50452.37803.61194.14881.09091.09041.09042.16622.16624.3595
C21.50451.43872.34462.67722.13592.15142.15141.09151.09153.2877
O32.37801.43871.33002.25203.33022.64252.64252.06472.06471.9845
C43.61192.34461.33001.19674.45293.90123.90122.60562.60561.0991
O54.14882.67722.25201.19674.77874.57214.57212.63032.63032.0349
H61.09092.13593.33024.45294.77871.76801.76802.50442.50445.3065
H71.09042.15142.64253.90124.57211.76801.76893.07202.51474.5011
H81.09042.15142.64253.90124.57211.76801.76892.51473.07204.5011
H92.16621.09152.06472.60562.63032.50443.07202.51471.76023.6051
H102.16621.09152.06472.60562.63032.50442.51473.07201.76023.6051
H114.35953.28771.98451.09912.03495.30654.50114.50113.60513.6051

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 107.774 C1 C2 H9 112.138
C1 C2 H10 112.138 C2 C1 H6 109.736
C2 C1 H7 111.009 C2 C1 H8 111.009
C2 O3 C4 115.687 O3 C2 H9 108.605
O3 C2 H10 108.605 O3 C4 O5 126.001
O3 C4 H11 109.204 O5 C4 H11 124.795
H6 C1 H7 108.295 H6 C1 H8 108.295
H7 C1 H8 108.410 H9 C2 H10 107.483
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.283      
2 C 0.016      
3 O -0.199      
4 C 0.215      
5 O -0.305      
6 H 0.097      
7 H 0.103      
8 H 0.103      
9 H 0.092      
10 H 0.092      
11 H 0.069      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.048 0.578 0.000 2.128
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.072 4.734 0.000
y 4.734 -29.249 0.000
z 0.000 0.000 -29.277
Traceless
 xyz
x -3.809 4.734 0.000
y 4.734 1.925 0.000
z 0.000 0.000 1.884
Polar
3z2-r23.767
x2-y2-3.823
xy4.734
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.818 0.268 0.000
y 0.268 6.308 0.000
z 0.000 0.000 4.968


<r2> (average value of r2) Å2
<r2> 134.689
(<r2>)1/2 11.606