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

using model chemistry: B3LYPultrafine/6-31+G**

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 B3LYPultrafine/6-31+G**
 hartrees
Energy at 0K-268.403330
Energy at 298.15K-268.410477
HF Energy-268.403330
Nuclear repulsion energy176.774022
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 B3LYPultrafine/6-31+G**
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' 3123 3006 22.82      
2 A' 3069 2955 2.89      
3 A' 3066 2952 66.04      
4 A' 3050 2936 17.28      
5 A' 1794 1727 359.29      
6 A' 1520 1463 7.81      
7 A' 1503 1447 3.14      
8 A' 1432 1378 15.68      
9 A' 1400 1348 0.85      
10 A' 1394 1342 3.65      
11 A' 1218 1172 413.52      
12 A' 1132 1090 10.05      
13 A' 1027 989 22.64      
14 A' 853 821 15.31      
15 A' 782 753 1.08      
16 A' 379 365 5.28      
17 A' 222 214 8.04      
18 A" 3135 3018 37.20      
19 A" 3109 2993 2.06      
20 A" 1492 1436 7.73      
21 A" 1297 1249 1.23      
22 A" 1178 1134 4.59      
23 A" 1033 995 0.01      
24 A" 812 781 0.56      
25 A" 347 334 23.44      
26 A" 237 228 2.55      
27 A" 62 59 0.73      

Unscaled Zero Point Vibrational Energy (zpe) 19832.2 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 19092.5 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 B3LYPultrafine/6-31+G**
ABC
0.59823 0.09505 0.08462

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.190 -0.281 0.000
C2 -0.704 -0.579 0.000
O3 0.000 0.694 0.000
C4 1.340 0.638 0.000
O5 2.009 -0.370 0.000
H6 -2.752 -1.221 0.000
H7 -2.477 0.291 0.888
H8 -2.477 0.291 -0.888
H9 -0.395 -1.143 -0.885
H10 -0.395 -1.143 0.885
H11 1.747 1.660 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51622.39763.64824.20011.09501.09411.09412.17962.17964.3898
C21.51621.45452.37872.72052.14672.16512.16511.09411.09413.3193
O32.39761.45451.34142.27333.35292.66172.66172.07742.07741.9962
C43.64822.37871.34141.20974.49483.93413.93412.63952.63951.0998
O54.20012.72052.27331.20974.83634.62004.62002.67552.67552.0467
H61.09502.14673.35294.49484.83631.77461.77462.51912.51915.3424
H71.09412.16512.66173.93414.62001.77461.77543.08752.52804.5279
H81.09412.16512.66173.93414.62001.77461.77542.52803.08754.5279
H92.17961.09412.07742.63952.67552.51913.08752.52801.76973.6371
H102.17961.09412.07742.63952.67552.51912.52803.08751.76973.6371
H114.38983.31931.99621.09982.04675.34244.52794.52793.63713.6371

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 107.609 C1 C2 H9 112.217
C1 C2 H10 112.217 C2 C1 H6 109.542
C2 C1 H7 111.052 C2 C1 H8 111.052
C2 O3 C4 116.534 O3 C2 H9 108.365
O3 C2 H10 108.365 O3 C4 O5 125.951
O3 C4 H11 109.316 O5 C4 H11 124.733
H6 C1 H7 108.325 H6 C1 H8 108.325
H7 C1 H8 108.462 H9 C2 H10 107.941
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.538      
2 C -0.024      
3 O -0.290      
4 C 0.376      
5 O -0.449      
6 H 0.153      
7 H 0.164      
8 H 0.164      
9 H 0.161      
10 H 0.161      
11 H 0.122      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.224 0.528 0.000 2.286
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.909 5.214 0.000
y 5.214 -29.868 0.000
z 0.000 0.000 -29.751
Traceless
 xyz
x -4.099 5.214 0.000
y 5.214 1.962 0.000
z 0.000 0.000 2.137
Polar
3z2-r24.275
x2-y2-4.040
xy5.214
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.957 0.073 0.000
y 0.073 6.423 0.000
z 0.000 0.000 4.957


<r2> (average value of r2) Å2
<r2> 137.543
(<r2>)1/2 11.728