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

using model chemistry: B1B95/6-311G**

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 B1B95/6-311G**
 hartrees
Energy at 0K-268.339331
Energy at 298.15K-268.346462
HF Energy-268.339331
Nuclear repulsion energy178.641140
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 B1B95/6-311G**
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' 3151 3026 21.56      
2 A' 3081 2958 12.28      
3 A' 3071 2948 14.23      
4 A' 3060 2938 71.86      
5 A' 1848 1774 317.15      
6 A' 1522 1461 8.27      
7 A' 1499 1439 2.89      
8 A' 1425 1368 14.44      
9 A' 1404 1348 1.27      
10 A' 1379 1324 0.57      
11 A' 1243 1193 414.64      
12 A' 1141 1095 12.60      
13 A' 1052 1010 22.16      
14 A' 874 839 11.17      
15 A' 803 771 2.82      
16 A' 381 366 6.69      
17 A' 221 213 6.96      
18 A" 3158 3032 34.07      
19 A" 3121 2997 7.98      
20 A" 1485 1426 7.52      
21 A" 1287 1236 1.67      
22 A" 1181 1133 4.78      
23 A" 1051 1009 0.10      
24 A" 800 768 1.05      
25 A" 355 341 22.05      
26 A" 232 223 2.01      
27 A" 35 33 0.66      

Unscaled Zero Point Vibrational Energy (zpe) 19928.9 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 19133.8 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 B1B95/6-311G**
ABC
0.60143 0.09788 0.08690

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.164 -0.278 0.000
C2 -0.687 -0.564 0.000
O3 0.000 0.700 0.000
C4 1.328 0.626 0.000
O5 1.970 -0.382 0.000
H6 -2.723 -1.214 0.000
H7 -2.448 0.292 0.884
H8 -2.448 0.292 -0.884
H9 -0.375 -1.129 -0.879
H10 -0.375 -1.129 0.879
H11 1.746 1.641 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.50452.37493.60754.13541.09001.08941.08942.16732.16734.3558
C21.50451.43872.34052.66322.13732.14862.14861.09061.09063.2835
O32.37491.43871.33042.24783.32842.63492.63492.06372.06371.9835
C43.60752.34051.33041.19534.44963.89323.89322.59902.59901.0973
O54.13542.66322.24781.19534.76614.55614.55612.61342.61342.0353
H61.09002.13733.32844.44964.76611.76751.76752.50852.50855.3032
H71.08942.14862.63493.89324.55611.76751.76733.07002.51344.4940
H81.08942.14862.63493.89324.55611.76751.76732.51343.07004.4940
H92.16731.09062.06372.59902.61342.50853.07002.51341.75853.5978
H102.16731.09062.06372.59902.61342.50852.51343.07001.75853.5978
H114.35583.28351.98351.09732.03535.30324.49404.49403.59783.5978

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 107.566 C1 C2 H9 112.279
C1 C2 H10 112.279 C2 C1 H6 109.892
C2 C1 H7 110.840 C2 C1 H8 110.840
C2 O3 C4 115.335 O3 C2 H9 108.575
O3 C2 H10 108.575 O3 C4 O5 125.655
O3 C4 H11 109.206 O5 C4 H11 125.139
H6 C1 H7 108.384 H6 C1 H8 108.384
H7 C1 H8 108.424 H9 C2 H10 107.462
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.353      
2 C -0.083      
3 O -0.297      
4 C 0.276      
5 O -0.337      
6 H 0.128      
7 H 0.134      
8 H 0.134      
9 H 0.145      
10 H 0.145      
11 H 0.107      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.929 0.542 0.000 2.004
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.773 4.840 0.000
y 4.840 -29.168 0.000
z 0.000 0.000 -29.120
Traceless
 xyz
x -3.629 4.840 0.000
y 4.840 1.778 0.000
z 0.000 0.000 1.851
Polar
3z2-r23.701
x2-y2-3.605
xy4.840
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.223 0.221 0.000
y 0.221 5.878 0.000
z 0.000 0.000 4.523


<r2> (average value of r2) Å2
<r2> 134.066
(<r2>)1/2 11.579