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All results from a given calculation for HCOOC2H5 (Ethyl formate)

using model chemistry: B3LYP/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 B3LYP/6-311G*
 hartrees
Energy at 0K-268.452622
Energy at 298.15K-268.459770
HF Energy-268.452622
Nuclear repulsion energy177.321545
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/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' 3110 3005 31.56      
2 A' 3062 2958 13.76      
3 A' 3044 2941 17.48      
4 A' 3035 2933 82.51      
5 A' 1811 1750 310.18      
6 A' 1535 1483 8.16      
7 A' 1515 1464 3.00      
8 A' 1438 1390 17.37      
9 A' 1409 1361 0.93      
10 A' 1405 1358 2.89      
11 A' 1206 1165 407.86      
12 A' 1139 1101 14.67      
13 A' 1029 995 20.72      
14 A' 858 829 15.26      
15 A' 791 764 0.99      
16 A' 380 367 5.88      
17 A' 225 217 6.92      
18 A" 3122 3017 52.06      
19 A" 3095 2990 2.44      
20 A" 1504 1453 7.93      
21 A" 1310 1266 1.15      
22 A" 1188 1148 4.50      
23 A" 1033 998 0.12      
24 A" 816 788 0.64      
25 A" 348 337 21.85      
26 A" 233 225 2.01      
27 A" 56 54 0.68      

Unscaled Zero Point Vibrational Energy (zpe) 19847.3 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 19178.5 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/6-311G*
ABC
0.60213 0.09563 0.08515

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.184 -0.279 0.000
C2 -0.700 -0.577 0.000
O3 0.000 0.694 0.000
C4 1.338 0.632 0.000
O5 2.001 -0.368 0.000
H6 -2.753 -1.213 0.000
H7 -2.468 0.294 0.885
H8 -2.468 0.294 -0.885
H9 -0.392 -1.144 -0.882
H10 -0.392 -1.144 0.882
H11 1.742 1.655 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51362.39113.63824.18631.09321.09221.09222.17652.17654.3767
C21.51361.45112.36992.70942.14882.16082.16081.09231.09233.3086
O32.39111.45111.33962.26563.34862.65252.65252.07542.07541.9895
C43.63822.36991.33961.19994.48763.92263.92262.63112.63111.1000
O54.18632.70942.26561.19994.82854.60434.60432.66562.66562.0397
H61.09322.14883.34864.48764.82851.77071.77072.52122.52125.3317
H71.09222.16082.65253.92264.60431.77071.77023.08232.52574.5124
H81.09222.16082.65253.92264.60431.77071.77022.52573.08234.5124
H92.17651.09232.07542.63112.66562.52123.08232.52571.76333.6281
H102.17651.09232.07542.63112.66562.52122.52573.08231.76333.6281
H114.37673.30861.98951.10002.03975.33174.51244.51243.62813.6281

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 107.490 C1 C2 H9 112.259
C1 C2 H10 112.259 C2 C1 H6 109.990
C2 C1 H7 111.007 C2 C1 H8 111.007
C2 O3 C4 116.189 O3 C2 H9 108.547
O3 C2 H10 108.547 O3 C4 O5 126.204
O3 C4 H11 108.880 O5 C4 H11 124.917
H6 C1 H7 108.237 H6 C1 H8 108.237
H7 C1 H8 108.267 H9 C2 H10 107.629
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.627      
2 C -0.224      
3 O -0.283      
4 C 0.187      
5 O -0.328      
6 H 0.213      
7 H 0.218      
8 H 0.218      
9 H 0.219      
10 H 0.219      
11 H 0.187      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.988 0.489 0.000 2.047
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.369 4.810 0.000
y 4.810 -29.450 0.000
z 0.000 0.000 -29.417
Traceless
 xyz
x -3.936 4.810 0.000
y 4.810 1.943 0.000
z 0.000 0.000 1.992
Polar
3z2-r23.985
x2-y2-3.919
xy4.810
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.259 0.235 0.000
y 0.235 5.902 0.000
z 0.000 0.000 4.497


<r2> (average value of r2) Å2
<r2> 136.574
(<r2>)1/2 11.686