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

using model chemistry: mPW1PW91/aug-cc-pVTZ

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 mPW1PW91/aug-cc-pVTZ
 hartrees
Energy at 0K-268.417199
Energy at 298.15K-268.424387
HF Energy-268.417199
Nuclear repulsion energy178.373939
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 mPW1PW91/aug-cc-pVTZ
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' 3140 3009 17.02      
2 A' 3075 2947 10.66      
3 A' 3064 2935 12.62      
4 A' 3054 2926 57.01      
5 A' 1822 1745 346.26      
6 A' 1517 1453 9.21      
7 A' 1497 1434 2.40      
8 A' 1427 1367 12.97      
9 A' 1403 1344 1.44      
10 A' 1394 1335 0.44      
11 A' 1240 1188 406.18      
12 A' 1141 1093 9.10      
13 A' 1049 1005 22.76      
14 A' 869 833 10.51      
15 A' 798 765 2.18      
16 A' 382 366 5.60      
17 A' 225 216 7.51      
18 A" 3147 3015 27.88      
19 A" 3114 2984 3.93      
20 A" 1485 1423 6.97      
21 A" 1303 1248 1.39      
22 A" 1181 1131 4.01      
23 A" 1052 1008 0.00      
24 A" 810 776 1.06      
25 A" 350 335 20.73      
26 A" 231 221 2.04      
27 A" 60 57 0.77      

Unscaled Zero Point Vibrational Energy (zpe) 19914.9 cm-1
Scaled (by 0.9581) Zero Point Vibrational Energy (zpe) 19080.5 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 mPW1PW91/aug-cc-pVTZ
ABC
0.60521 0.09709 0.08635

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.170 -0.285 0.000
C2 -0.692 -0.567 0.000
O3 0.000 0.696 0.000
C4 1.328 0.631 0.000
O5 1.983 -0.371 0.000
H6 -2.721 -1.225 0.000
H7 -2.460 0.282 0.884
H8 -2.460 0.282 -0.884
H9 -0.382 -1.131 -0.880
H10 -0.382 -1.131 0.880
H11 1.741 1.647 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.50492.38093.61524.15391.08981.08921.08922.16492.16494.3619
C21.50491.43932.34762.68192.13352.15162.15161.09011.09013.2893
O32.38091.43931.32922.25173.33042.64672.64672.06302.06301.9842
C43.61522.34761.32921.19704.45363.90523.90522.60782.60781.0974
O54.15392.68192.25171.19704.78114.57724.57722.63552.63552.0326
H61.08982.13353.33044.45364.78111.76611.76612.50092.50095.3064
H71.08922.15162.64673.90524.57721.76611.76763.07022.51314.5051
H81.08922.15162.64673.90524.57721.76611.76762.51313.07024.5051
H92.16491.09012.06302.60782.63552.50093.07022.51311.75953.6055
H102.16491.09012.06302.60782.63552.50092.51313.07021.75953.6055
H114.36193.28931.98421.09742.03265.30644.50514.50513.60553.6055

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 107.911 C1 C2 H9 112.092
C1 C2 H10 112.092 C2 C1 H6 109.583
C2 C1 H7 111.068 C2 C1 H8 111.068
C2 O3 C4 115.925 O3 C2 H9 108.510
O3 C2 H10 108.510 O3 C4 O5 126.000
O3 C4 H11 109.333 O5 C4 H11 124.667
H6 C1 H7 108.285 H6 C1 H8 108.285
H7 C1 H8 108.464 H9 C2 H10 107.619
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.646      
2 C 0.025      
3 O -0.278      
4 C 0.003      
5 O -0.575      
6 H 0.204      
7 H 0.205      
8 H 0.205      
9 H 0.211      
10 H 0.211      
11 H 0.435      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.143 0.577 0.000 2.220
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.305 4.883 0.000
y 4.883 -29.386 0.000
z 0.000 0.000 -29.333
Traceless
 xyz
x -3.945 4.883 0.000
y 4.883 1.933 0.000
z 0.000 0.000 2.013
Polar
3z2-r24.025
x2-y2-3.919
xy4.883
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.386 0.216 0.000
y 0.216 6.744 0.000
z 0.000 0.000 5.420


<r2> (average value of r2) Å2
<r2> 134.959
(<r2>)1/2 11.617