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: BLYP/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 BLYP/6-311G*
 hartrees
Energy at 0K-268.368962
Energy at 298.15K-268.375960
HF Energy-268.368962
Nuclear repulsion energy175.403239
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 BLYP/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' 3028 3021 33.73      
2 A' 2981 2974 15.53      
3 A' 2968 2961 19.78      
4 A' 2931 2923 90.37      
5 A' 1730 1725 271.94      
6 A' 1494 1491 6.95      
7 A' 1477 1474 3.01      
8 A' 1395 1391 13.08      
9 A' 1363 1360 3.14      
10 A' 1356 1353 6.13      
11 A' 1118 1115 312.42      
12 A' 1100 1097 55.02      
13 A' 984 981 24.07      
14 A' 811 809 15.88      
15 A' 754 752 0.33      
16 A' 366 365 5.07      
17 A' 216 215 6.11      
18 A" 3042 3034 54.21      
19 A" 3013 3005 3.54      
20 A" 1467 1464 7.57      
21 A" 1266 1263 0.76      
22 A" 1149 1146 4.04      
23 A" 978 976 0.01      
24 A" 795 793 0.75      
25 A" 342 341 19.32      
26 A" 225 224 1.53      
27 A" 46 46 0.65      

Unscaled Zero Point Vibrational Energy (zpe) 19197.7 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 19149.7 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 BLYP/6-311G*
ABC
0.58822 0.09355 0.08326

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.206 -0.274 0.000
C2 -0.714 -0.583 0.000
O3 0.000 0.706 0.000
C4 1.357 0.631 0.000
O5 2.024 -0.381 0.000
H6 -2.782 -1.212 0.000
H7 -2.491 0.303 0.891
H8 -2.491 0.303 -0.891
H9 -0.403 -1.151 -0.888
H10 -0.403 -1.151 0.888
H11 1.760 1.664 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.52362.41433.67694.23181.10021.09891.09892.19262.19264.4144
C21.52361.47352.40122.74592.16142.17582.17581.09911.09913.3419
O32.41431.47351.35942.29733.37912.67592.67592.09732.09732.0036
C43.67692.40121.35941.21174.53123.96363.96362.65782.65781.1082
O54.23182.74592.29731.21174.87774.65264.65262.69712.69712.0613
H61.10022.16143.37914.53124.87771.78121.78122.53992.53995.3757
H71.09892.17582.67593.96364.65261.78121.78123.10412.54404.5512
H81.09892.17582.67593.96364.65261.78121.78122.54403.10414.5512
H92.19261.09912.09732.65782.69712.53993.10412.54401.77603.6592
H102.19261.09912.09732.65782.69712.53992.54403.10411.77603.6592
H114.41443.34192.00361.10822.06135.37574.55124.55123.65923.6592

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 107.318 C1 C2 H9 112.442
C1 C2 H10 112.442 C2 C1 H6 109.882
C2 C1 H7 111.099 C2 C1 H8 111.099
C2 O3 C4 115.846 O3 C2 H9 108.352
O3 C2 H10 108.352 O3 C4 O5 126.541
O3 C4 H11 108.144 O5 C4 H11 125.315
H6 C1 H7 108.189 H6 C1 H8 108.189
H7 C1 H8 108.284 H9 C2 H10 107.794
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.597      
2 C -0.215      
3 O -0.256      
4 C 0.154      
5 O -0.295      
6 H 0.203      
7 H 0.208      
8 H 0.208      
9 H 0.209      
10 H 0.209      
11 H 0.173      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.984 0.404 0.000 2.025
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.406 4.611 0.000
y 4.611 -29.776 0.000
z 0.000 0.000 -29.685
Traceless
 xyz
x -3.675 4.611 0.000
y 4.611 1.769 0.000
z 0.000 0.000 1.906
Polar
3z2-r23.813
x2-y2-3.629
xy4.611
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.764 0.325 0.000
y 0.325 6.180 0.000
z 0.000 0.000 4.639


<r2> (average value of r2) Å2
<r2> 139.266
(<r2>)1/2 11.801