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: B97D3/aug-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 B97D3/aug-cc-pVTZ
 hartrees
Energy at 0K-268.331751
Energy at 298.15K-268.338785
HF Energy-268.331751
Nuclear repulsion energy176.537816
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 B97D3/aug-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' 3061 3014 23.80      
2 A' 3003 2958 14.11      
3 A' 2991 2946 17.62      
4 A' 2961 2916 71.35      
5 A' 1736 1709 318.25      
6 A' 1484 1461 6.89      
7 A' 1468 1445 2.21      
8 A' 1391 1369 9.90      
9 A' 1365 1344 1.00      
10 A' 1359 1338 6.38      
11 A' 1146 1128 361.89      
12 A' 1106 1089 14.21      
13 A' 997 981 28.06      
14 A' 820 808 15.01      
15 A' 762 750 0.31      
16 A' 371 365 4.65      
17 A' 219 215 6.64      
18 A" 3072 3025 38.67      
19 A" 3041 2994 3.88      
20 A" 1457 1435 5.87      
21 A" 1267 1248 1.02      
22 A" 1149 1132 3.62      
23 A" 999 984 0.08      
24 A" 796 783 0.78      
25 A" 340 335 18.48      
26 A" 221 218 1.73      
27 A" 44 43 0.75      

Unscaled Zero Point Vibrational Energy (zpe) 19311.5 cm-1
Scaled (by 0.9847) Zero Point Vibrational Energy (zpe) 19016.0 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 B97D3/aug-cc-pVTZ
ABC
0.59456 0.09484 0.08439

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.192 -0.282 0.000
C2 -0.707 -0.576 0.000
O3 0.000 0.704 0.000
C4 1.345 0.632 0.000
O5 2.010 -0.376 0.000
H6 -2.749 -1.225 0.000
H7 -2.481 0.288 0.888
H8 -2.481 0.288 -0.888
H9 -0.396 -1.139 -0.885
H10 -0.396 -1.139 0.885
H11 1.751 1.658 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51362.40353.65344.20311.09481.09381.09382.17822.17824.3947
C21.51361.46202.38152.72472.14192.16332.16331.09421.09423.3217
O32.40351.46201.34702.28143.35762.66782.66782.08192.08191.9944
C43.65342.38151.34701.20714.49513.94283.94282.63612.63611.1032
O54.20312.72472.28141.20714.83374.62574.62572.67452.67452.0496
H61.09482.14193.35764.49514.83371.77401.77402.51532.51535.3440
H71.09382.16332.66783.94284.62571.77401.77613.08652.52644.5364
H81.09382.16332.66783.94284.62571.77401.77612.52643.08654.5364
H92.17821.09422.08192.63612.67452.51533.08652.52641.77003.6350
H102.17821.09422.08192.63612.67452.51532.52643.08651.77003.6350
H114.39473.32171.99441.10322.04965.34404.53644.53643.63503.6350

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 107.742 C1 C2 H9 112.289
C1 C2 H10 112.289 C2 C1 H6 109.354
C2 C1 H7 111.109 C2 C1 H8 111.109
C2 O3 C4 115.886 O3 C2 H9 108.209
O3 C2 H10 108.209 O3 C4 O5 126.470
O3 C4 H11 108.561 O5 C4 H11 124.969
H6 C1 H7 108.310 H6 C1 H8 108.310
H7 C1 H8 108.563 H9 C2 H10 107.957
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.485      
2 C 0.147      
3 O -0.241      
4 C 0.042      
5 O -0.555      
6 H 0.146      
7 H 0.148      
8 H 0.148      
9 H 0.145      
10 H 0.145      
11 H 0.360      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.190 0.472 0.000 2.240
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.486 4.727 0.000
y 4.727 -29.738 0.000
z 0.000 0.000 -29.548
Traceless
 xyz
x -3.844 4.727 0.000
y 4.727 1.780 0.000
z 0.000 0.000 2.064
Polar
3z2-r24.128
x2-y2-3.749
xy4.727
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.989 0.281 0.000
y 0.281 7.148 0.000
z 0.000 0.000 5.665


<r2> (average value of r2) Å2
<r2> 137.673
(<r2>)1/2 11.733