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

using model chemistry: HF/6-311+G(3df,2p)

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 HF/6-311+G(3df,2p)
 hartrees
Energy at 0K-266.929796
Energy at 298.15K-266.937232
HF Energy-266.929796
Nuclear repulsion energy179.728319
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 HF/6-311+G(3df,2p)
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' 3232 2937 41.73 56.17 0.61 0.75
2 A' 3221 2927 57.93 116.55 0.21 0.35
3 A' 3204 2912 12.89 107.58 0.12 0.21
4 A' 3168 2878 20.18 137.78 0.01 0.01
5 A' 1967 1787 443.64 9.71 0.18 0.30
6 A' 1647 1496 8.58 1.76 0.63 0.77
7 A' 1616 1469 2.64 5.71 0.74 0.85
8 A' 1561 1418 14.59 1.21 0.34 0.51
9 A' 1536 1396 4.57 2.96 0.29 0.45
10 A' 1520 1382 0.18 0.18 0.24 0.39
11 A' 1364 1240 556.37 2.17 0.13 0.23
12 A' 1228 1115 16.18 5.82 0.13 0.23
13 A' 1108 1007 20.63 3.84 0.71 0.83
14 A' 939 853 18.96 6.74 0.20 0.34
15 A' 857 779 2.44 3.71 0.29 0.45
16 A' 410 372 6.17 1.70 0.24 0.39
17 A' 243 221 9.52 0.43 0.24 0.39
18 A" 3257 2960 54.46 4.35 0.75 0.86
19 A" 3227 2932 3.70 90.43 0.75 0.86
20 A" 1602 1456 5.61 5.00 0.75 0.86
21 A" 1414 1285 2.10 3.32 0.75 0.86
22 A" 1287 1170 4.63 0.13 0.75 0.86
23 A" 1190 1081 1.90 0.99 0.75 0.86
24 A" 873 793 0.15 0.09 0.75 0.86
25 A" 351 319 26.76 0.92 0.75 0.86
26 A" 256 232 4.67 0.41 0.75 0.86
27 A" 77 70 1.01 0.09 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 21178.3 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 19242.6 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 HF/6-311+G(3df,2p)
ABC
0.63115 0.09732 0.08701

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.165 -0.305 0.000
C2 -0.681 -0.586 0.000
O3 0.000 0.665 0.000
C4 1.309 0.648 0.000
O5 1.988 -0.314 0.000
H6 -2.713 -1.240 0.000
H7 -2.451 0.260 0.879
H8 -2.451 0.260 -0.879
H9 -0.381 -1.146 -0.874
H10 -0.381 -1.146 0.874
H11 1.698 1.663 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51062.37243.60284.15301.08361.08261.08262.15802.15804.3352
C21.51061.42412.34192.68262.13422.14942.14941.08091.08093.2734
O32.37241.42411.30922.21563.31452.63532.63532.04642.04641.9693
C43.60282.34191.30921.17764.44303.88123.88122.61512.61511.0863
O54.15302.68262.21561.17764.79064.56134.56132.65812.65811.9981
H61.08362.13423.31454.44304.79061.75751.75752.49232.49235.2798
H71.08262.14942.63533.88124.56131.75751.75703.05542.50264.4670
H81.08262.14942.63533.88124.56131.75751.75702.50263.05544.4670
H92.15801.08092.04642.61512.65812.49233.05542.50261.74893.6017
H102.15801.08092.04642.61512.65812.49232.50263.05541.74893.6017
H114.33523.27341.96931.08631.99815.27984.46704.46703.60173.6017

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 107.847 C1 C2 H9 111.687
C1 C2 H10 111.687 C2 C1 H6 109.610
C2 C1 H7 110.889 C2 C1 H8 110.889
C2 O3 C4 117.857 O3 C2 H9 108.780
O3 C2 H10 108.780 O3 C4 O5 125.903
O3 C4 H11 110.238 O5 C4 H11 123.859
H6 C1 H7 108.452 H6 C1 H8 108.452
H7 C1 H8 108.478 H9 C2 H10 107.989
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.366      
2 C 0.216      
3 O -0.733      
4 C 0.855      
5 O -0.753      
6 H 0.124      
7 H 0.128      
8 H 0.128      
9 H 0.133      
10 H 0.133      
11 H 0.134      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.199 0.731 0.000 2.317
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.124 5.287 0.000
y 5.287 -29.026 0.000
z 0.000 0.000 -29.288
Traceless
 xyz
x -4.967 5.287 0.000
y 5.287 2.680 0.000
z 0.000 0.000 2.287
Polar
3z2-r24.574
x2-y2-5.098
xy5.287
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.331 0.139 0.000
y 0.139 6.088 0.000
z 0.000 0.000 4.985


<r2> (average value of r2) Å2
<r2> 134.198
(<r2>)1/2 11.584