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: B3LYP/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 B3LYP/cc-pVTZ
 hartrees
Energy at 0K-268.489287
Energy at 298.15K-268.496442
HF Energy-268.489287
Nuclear repulsion energy177.489347
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 B3LYP/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' 3106 3002 22.62      
2 A' 3053 2951 11.67      
3 A' 3040 2939 14.01      
4 A' 3030 2929 66.72      
5 A' 1796 1736 307.63      
6 A' 1521 1470 7.20      
7 A' 1500 1450 2.57      
8 A' 1425 1378 11.71      
9 A' 1400 1353 0.57      
10 A' 1397 1350 3.80      
11 A' 1204 1164 403.79      
12 A' 1132 1094 10.81      
13 A' 1025 991 21.73      
14 A' 853 824 14.23      
15 A' 788 762 1.00      
16 A' 380 367 5.21      
17 A' 224 217 7.07      
18 A" 3115 3011 36.85      
19 A" 3086 2983 2.73      
20 A" 1488 1438 6.27      
21 A" 1297 1254 1.29      
22 A" 1181 1141 4.00      
23 A" 1041 1007 0.02      
24 A" 813 786 0.76      
25 A" 345 333 20.45      
26 A" 230 222 1.88      
27 A" 58 56 0.77      

Unscaled Zero Point Vibrational Energy (zpe) 19763.0 cm-1
Scaled (by 0.9666) Zero Point Vibrational Energy (zpe) 19102.9 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 B3LYP/cc-pVTZ
ABC
0.60347 0.09576 0.08527

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.183 -0.282 0.000
C2 -0.700 -0.576 0.000
O3 0.000 0.693 0.000
C4 1.337 0.634 0.000
O5 2.000 -0.366 0.000
H6 -2.743 -1.217 0.000
H7 -2.468 0.288 0.884
H8 -2.468 0.288 -0.884
H9 -0.393 -1.141 -0.880
H10 -0.393 -1.141 0.880
H11 1.741 1.654 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51152.39053.63634.18361.09041.08981.08982.17162.17164.3748
C21.51151.44992.36902.70842.14072.15722.15721.09001.09003.3062
O32.39051.44991.33802.26353.34262.65242.65242.07232.07231.9881
C43.63632.36901.33801.19994.47953.92093.92092.62992.62991.0973
O54.18362.70842.26351.19994.81854.60124.60122.66512.66512.0366
H61.09042.14073.34264.47954.81851.76751.76752.51022.51025.3239
H71.08982.15722.65243.92094.60121.76751.76813.07562.51924.5118
H81.08982.15722.65243.92094.60121.76751.76812.51923.07564.5118
H92.17161.09002.07232.62992.66512.51023.07562.51921.76073.6247
H102.17161.09002.07232.62992.66512.51022.51923.07561.76073.6247
H114.37483.30621.98811.09732.03665.32394.51184.51183.62473.6247

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 107.631 C1 C2 H9 112.160
C1 C2 H10 112.160 C2 C1 H6 109.658
C2 C1 H7 111.007 C2 C1 H8 111.007
C2 O3 C4 116.310 O3 C2 H9 108.521
O3 C2 H10 108.521 O3 C4 O5 126.130
O3 C4 H11 109.047 O5 C4 H11 124.823
H6 C1 H7 108.328 H6 C1 H8 108.328
H7 C1 H8 108.429 H9 C2 H10 107.741
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.280      
2 C 0.033      
3 O -0.224      
4 C 0.227      
5 O -0.309      
6 H 0.095      
7 H 0.101      
8 H 0.101      
9 H 0.093      
10 H 0.093      
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
  -2.079 0.541 0.000 2.148
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.437 4.756 0.000
y 4.756 -29.478 0.000
z 0.000 0.000 -29.488
Traceless
 xyz
x -3.954 4.756 0.000
y 4.756 1.985 0.000
z 0.000 0.000 1.969
Polar
3z2-r23.938
x2-y2-3.959
xy4.756
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.926 0.286 0.000
y 0.286 6.371 0.000
z 0.000 0.000 4.995


<r2> (average value of r2) Å2
<r2> 136.422
(<r2>)1/2 11.680