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

using model chemistry: PBE1PBE/6-31G

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 PBE1PBE/6-31G
 hartrees
Energy at 0K-267.984360
Energy at 298.15K-267.991460
HF Energy-267.984360
Nuclear repulsion energy175.608443
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 PBE1PBE/6-31G
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' 3174 3034 17.58      
2 A' 3158 3019 45.60      
3 A' 3101 2964 10.29      
4 A' 3084 2948 13.66      
5 A' 1742 1665 255.57      
6 A' 1556 1488 12.23      
7 A' 1544 1476 4.81      
8 A' 1467 1402 16.47      
9 A' 1423 1360 4.28      
10 A' 1405 1343 9.33      
11 A' 1210 1157 377.41      
12 A' 1164 1113 7.64      
13 A' 1063 1016 19.12      
14 A' 842 805 11.02      
15 A' 784 749 2.56      
16 A' 376 360 7.78      
17 A' 214 205 8.17      
18 A" 3188 3047 28.85      
19 A" 3153 3014 6.32      
20 A" 1530 1463 9.53      
21 A" 1314 1256 0.21      
22 A" 1199 1146 8.03      
23 A" 1034 988 0.04      
24 A" 839 802 2.01      
25 A" 347 331 31.73      
26 A" 224 214 2.37      
27 A" 45 43 0.60      

Unscaled Zero Point Vibrational Energy (zpe) 20088.4 cm-1
Scaled (by 0.9559) Zero Point Vibrational Energy (zpe) 19202.5 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 PBE1PBE/6-31G
ABC
0.58787 0.09404 0.08362

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.196 -0.258 0.000
C2 -0.724 -0.589 0.000
O3 0.000 0.695 0.000
C4 1.355 0.639 0.000
O5 2.022 -0.391 0.000
H6 -2.786 -1.180 0.000
H7 -2.464 0.324 0.887
H8 -2.464 0.324 -0.887
H9 -0.418 -1.155 -0.885
H10 -0.418 -1.155 0.885
H11 1.763 1.653 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.50892.39393.66334.22021.09481.09351.09352.17962.17964.3963
C21.50891.47372.41512.75312.14532.15542.15541.09431.09433.3483
O32.39391.47371.35662.29483.35832.64482.64482.09232.09232.0067
C43.66332.41511.35661.22684.52383.93373.93372.67322.67321.0924
O54.22022.75312.29481.22684.87254.62814.62812.70542.70542.0598
H61.09482.14533.35834.52384.87251.77501.77502.52872.52875.3594
H71.09352.15542.64483.93374.62811.77501.77313.08402.52424.5190
H81.09352.15542.64483.93374.62811.77501.77312.52423.08404.5190
H92.17961.09432.09232.67322.70542.52873.08402.52421.77053.6635
H102.17961.09432.09232.67322.70542.52872.52423.08401.77053.6635
H114.39633.34832.00671.09242.05985.35944.51904.51903.66353.6635

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 106.758 C1 C2 H9 112.735
C1 C2 H10 112.735 C2 C1 H6 109.943
C2 C1 H7 110.826 C2 C1 H8 110.826
C2 O3 C4 117.089 O3 C2 H9 108.224
O3 C2 H10 108.224 O3 C4 O5 125.241
O3 C4 H11 109.574 O5 C4 H11 125.185
H6 C1 H7 108.417 H6 C1 H8 108.417
H7 C1 H8 108.337 H9 C2 H10 107.988
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.504      
2 C -0.097      
3 O -0.493      
4 C 0.371      
5 O -0.421      
6 H 0.176      
7 H 0.190      
8 H 0.190      
9 H 0.200      
10 H 0.200      
11 H 0.189      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.151 0.408 0.000 2.189
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.992 5.583 0.000
y 5.583 -29.427 0.000
z 0.000 0.000 -29.248
Traceless
 xyz
x -3.655 5.583 0.000
y 5.583 1.693 0.000
z 0.000 0.000 1.962
Polar
3z2-r23.923
x2-y2-3.565
xy5.583
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.902 0.172 0.000
y 0.172 5.509 0.000
z 0.000 0.000 3.990


<r2> (average value of r2) Å2
<r2> 138.415
(<r2>)1/2 11.765