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

using model chemistry: B2PLYP/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 B2PLYP/cc-pVDZ
 hartrees
Energy at 0K-268.132658
Energy at 298.15K-268.139852
HF Energy-267.873008
Nuclear repulsion energy177.183004
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 B2PLYP/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' 3157 3024 19.25      
2 A' 3083 2952 10.39      
3 A' 3071 2941 15.37      
4 A' 3068 2938 75.98      
5 A' 1805 1728 273.89      
6 A' 1510 1446 6.59      
7 A' 1490 1427 1.98      
8 A' 1426 1366 16.31      
9 A' 1393 1334 0.91      
10 A' 1385 1326 3.60      
11 A' 1220 1169 401.15      
12 A' 1139 1091 10.50      
13 A' 1048 1004 19.18      
14 A' 865 829 12.64      
15 A' 789 756 2.42      
16 A' 382 366 6.03      
17 A' 230 220 6.20      
18 A" 3165 3031 31.07      
19 A" 3131 2998 10.23      
20 A" 1474 1412 5.83      
21 A" 1294 1239 1.18      
22 A" 1180 1131 4.62      
23 A" 1038 994 0.15      
24 A" 813 779 0.68      
25 A" 350 335 18.70      
26 A" 243 232 2.14      
27 A" 61 58 0.52      

Unscaled Zero Point Vibrational Energy (zpe) 19904.8 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 19062.8 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 B2PLYP/cc-pVDZ
ABC
0.58950 0.09656 0.08566

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.179 -0.262 0.000
C2 -0.695 -0.564 0.000
O3 0.000 0.707 0.000
C4 1.341 0.620 0.000
O5 1.985 -0.402 0.000
H6 -2.751 -1.202 0.000
H7 -2.459 0.317 0.892
H8 -2.459 0.317 -0.892
H9 -0.387 -1.137 -0.888
H10 -0.387 -1.137 0.888
H11 1.763 1.644 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51372.38413.62864.16541.10041.09991.09992.18282.18284.3784
C21.51371.44892.35602.68482.15212.16422.16421.10071.10073.3048
O32.38411.44891.34412.27343.34812.64482.64482.08262.08261.9969
C43.62862.35601.34411.20784.47943.91553.91552.61952.61951.1074
O54.16542.68482.27341.20784.80254.58914.58912.63662.63662.0580
H61.10042.15213.34814.47944.80251.78531.78532.52622.52625.3363
H71.09992.16422.64483.91554.58911.78531.78423.09472.53154.5151
H81.09992.16422.64483.91554.58911.78531.78422.53153.09474.5151
H92.18281.10072.08262.61952.63662.52623.09472.53151.77583.6255
H102.18281.10072.08262.61952.63662.52622.53153.09471.77583.6255
H114.37843.30481.99691.10742.05805.33634.51514.51513.62553.6255

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 107.152 C1 C2 H9 112.250
C1 C2 H10 112.250 C2 C1 H6 109.817
C2 C1 H7 110.805 C2 C1 H8 110.805
C2 O3 C4 114.982 O3 C2 H9 108.775
O3 C2 H10 108.775 O3 C4 O5 125.880
O3 C4 H11 108.706 O5 C4 H11 125.414
H6 C1 H7 108.466 H6 C1 H8 108.466
H7 C1 H8 108.410 H9 C2 H10 107.551
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.046      
2 C 0.098      
3 O -0.277      
4 C 0.256      
5 O -0.246      
6 H 0.034      
7 H 0.041      
8 H 0.041      
9 H 0.040      
10 H 0.040      
11 H 0.019      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.841 0.507 0.000 1.910
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.833 4.501 0.000
y 4.501 -29.434 0.000
z 0.000 0.000 -29.307
Traceless
 xyz
x -3.462 4.501 0.000
y 4.501 1.636 0.000
z 0.000 0.000 1.826
Polar
3z2-r23.653
x2-y2-3.399
xy4.501
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.157 0.269 0.000
y 0.269 5.805 0.000
z 0.000 0.000 4.371


<r2> (average value of r2) Å2
<r2> 135.836
(<r2>)1/2 11.655