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

using model chemistry: PBEPBE/aug-cc-pVDZ

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 PBEPBE/aug-cc-pVDZ
 hartrees
Energy at 0K-268.104487
Energy at 298.15K-268.111503
HF Energy-268.104487
Nuclear repulsion energy175.876420
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 PBEPBE/aug-cc-pVDZ
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' 3067 3049 16.67      
2 A' 2995 2977 12.54      
3 A' 2985 2967 14.32      
4 A' 2962 2944 60.68      
5 A' 1726 1715 305.58      
6 A' 1437 1429 7.54      
7 A' 1420 1412 1.97      
8 A' 1353 1345 13.18      
9 A' 1326 1317 1.29      
10 A' 1313 1305 1.96      
11 A' 1146 1139 334.92      
12 A' 1094 1087 7.41      
13 A' 1002 996 26.68      
14 A' 819 814 10.14      
15 A' 757 752 0.79      
16 A' 366 363 4.98      
17 A' 216 215 6.83      
18 A" 3076 3057 27.62      
19 A" 3041 3023 5.74      
20 A" 1409 1401 6.61      
21 A" 1233 1226 1.05      
22 A" 1122 1115 3.50      
23 A" 977 971 0.32      
24 A" 776 771 1.18      
25 A" 345 343 18.33      
26 A" 221 220 1.58      
27 A" 52 52 0.75      

Unscaled Zero Point Vibrational Energy (zpe) 19118.3 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 19001.7 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 PBEPBE/aug-cc-pVDZ
ABC
0.58252 0.09489 0.08423

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.194 -0.271 0.000
C2 -0.707 -0.568 0.000
O3 0.000 0.713 0.000
C4 1.350 0.627 0.000
O5 2.005 -0.400 0.000
H6 -2.757 -1.223 0.000
H7 -2.486 0.303 0.897
H8 -2.486 0.303 -0.897
H9 -0.390 -1.138 -0.894
H10 -0.390 -1.138 0.894
H11 1.775 1.657 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51602.40453.65634.20031.10581.10501.10502.19162.19164.4126
C21.51601.46372.37972.71692.15162.17502.17501.10611.10613.3336
O32.40451.46371.35322.29293.36882.67502.67502.09192.09192.0105
C43.65632.37971.35321.21774.50483.95373.95372.63482.63481.1136
O54.20032.71692.29291.21774.83194.63344.63342.66012.66012.0692
H61.10582.15163.36884.50484.83191.79101.79102.53142.53145.3696
H71.10502.17502.67503.95374.63341.79101.79463.11122.54404.5607
H81.10502.17502.67503.95374.63341.79101.79462.54403.11124.5607
H92.19161.10612.09192.63482.66012.53143.11122.54401.78733.6461
H102.19161.10612.09192.63482.66012.53142.54403.11121.78733.6461
H114.41263.33362.01051.11362.06925.36964.56074.56073.64613.6461

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 107.592 C1 C2 H9 112.466
C1 C2 H10 112.466 C2 C1 H6 109.311
C2 C1 H7 111.201 C2 C1 H8 111.201
C2 O3 C4 115.248 O3 C2 H9 108.182
O3 C2 H10 108.182 O3 C4 O5 126.130
O3 C4 H11 108.792 O5 C4 H11 125.078
H6 C1 H7 108.219 H6 C1 H8 108.219
H7 C1 H8 108.596 H9 C2 H10 107.795
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.539      
2 C 1.042      
3 O -0.349      
4 C 0.690      
5 O -0.388      
6 H -0.143      
7 H -0.170      
8 H -0.170      
9 H -0.362      
10 H -0.362      
11 H -0.328      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.163 0.506 0.000 2.222
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.627 4.815 0.000
y 4.815 -30.116 0.000
z 0.000 0.000 -29.895
Traceless
 xyz
x -3.622 4.815 0.000
y 4.815 1.646 0.000
z 0.000 0.000 1.977
Polar
3z2-r23.953
x2-y2-3.512
xy4.815
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.195 0.266 0.000
y 0.266 7.279 0.000
z 0.000 0.000 5.734


<r2> (average value of r2) Å2
<r2> 138.188
(<r2>)1/2 11.755