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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/cc-pVDZ
 hartrees
Energy at 0K-268.079423
Energy at 298.15K-268.086449
HF Energy-268.079423
Nuclear repulsion energy176.142539
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 PBEPBEultrafine/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3071 3053 15.03      
2 A' 2984 2967 13.10      
3 A' 2980 2963 15.63      
4 A' 2936 2919 79.43      
5 A' 1764 1753 257.89      
6 A' 1439 1431 6.29      
7 A' 1421 1413 1.96      
8 A' 1357 1350 13.18      
9 A' 1329 1322 0.44      
10 A' 1317 1309 3.25      
11 A' 1159 1152 336.16      
12 A' 1095 1089 9.99      
13 A' 1010 1004 24.86      
14 A' 829 825 9.25      
15 A' 765 760 1.87      
16 A' 368 366 5.83      
17 A' 219 218 5.66      
18 A" 3074 3056 22.98      
19 A" 3025 3007 13.00      
20 A" 1407 1398 6.47      
21 A" 1233 1226 0.92      
22 A" 1122 1116 4.43      
23 A" 978 973 0.00      
24 A" 777 773 1.64      
25 A" 350 348 15.55      
26 A" 233 232 1.42      
27 A" 42 41 0.59      

Unscaled Zero Point Vibrational Energy (zpe) 19142.1 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 19031.1 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 PBEPBEultrafine/cc-pVDZ
ABC
0.58101 0.09555 0.08472

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.188 -0.264 0.000
C2 -0.702 -0.563 0.000
O3 0.000 0.715 0.000
C4 1.350 0.620 0.000
O5 1.995 -0.410 0.000
H6 -2.763 -1.211 0.000
H7 -2.478 0.317 0.898
H8 -2.478 0.317 -0.898
H9 -0.386 -1.141 -0.893
H10 -0.386 -1.141 0.893
H11 1.771 1.657 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51562.39703.64714.18551.10821.10801.10802.19432.19434.4006
C21.51561.45752.36882.70132.16052.17542.17541.11011.11013.3232
O32.39701.45751.35362.28993.36812.66512.66512.09532.09532.0061
C43.64712.36881.35361.21494.50263.94343.94342.62932.62931.1192
O54.18552.70132.28991.21494.82494.61934.61932.64572.64572.0790
H61.10822.16053.36814.50264.82491.79571.79572.54042.54045.3652
H71.10802.17542.66513.94344.61931.79571.79563.11612.55004.5445
H81.10802.17542.66513.94344.61931.79571.79562.55003.11614.5445
H92.19431.11012.09532.62932.64572.54043.11612.55001.78633.6441
H102.19431.11012.09532.62932.64572.54042.55003.11611.78633.6441
H114.40063.32322.00611.11922.07905.36524.54454.54453.64413.6441

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 107.439 C1 C2 H9 112.461
C1 C2 H10 112.461 C2 C1 H6 109.886
C2 C1 H7 111.072 C2 C1 H8 111.072
C2 O3 C4 114.794 O3 C2 H9 108.622
O3 C2 H10 108.622 O3 C4 O5 126.050
O3 C4 H11 108.071 O5 C4 H11 125.879
H6 C1 H7 108.235 H6 C1 H8 108.235
H7 C1 H8 108.245 H9 C2 H10 107.130
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.067      
2 C 0.057      
3 O -0.215      
4 C 0.198      
5 O -0.216      
6 H 0.041      
7 H 0.048      
8 H 0.048      
9 H 0.046      
10 H 0.046      
11 H 0.013      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.898 0.449 0.000 1.950
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.439 4.208 0.000
y 4.208 -29.321 0.000
z 0.000 0.000 -29.250
Traceless
 xyz
x -3.154 4.208 0.000
y 4.208 1.524 0.000
z 0.000 0.000 1.630
Polar
3z2-r23.260
x2-y2-3.119
xy4.208
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.649 0.387 0.000
y 0.387 6.077 0.000
z 0.000 0.000 4.524


<r2> (average value of r2) Å2
<r2> 137.032
(<r2>)1/2 11.706