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

using model chemistry: B3LYP/6-31+G**

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 B3LYP/6-31+G**
 hartrees
Energy at 0K-268.403326
Energy at 298.15K-268.410459
HF Energy-268.403326
Nuclear repulsion energy176.772421
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 B3LYP/6-31+G**
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' 3123 3011 22.80      
2 A' 3069 2959 3.74      
3 A' 3067 2957 65.23      
4 A' 3051 2941 17.25      
5 A' 1794 1730 359.41      
6 A' 1519 1465 7.82      
7 A' 1503 1449 3.16      
8 A' 1431 1380 15.58      
9 A' 1400 1350 0.85      
10 A' 1393 1343 3.72      
11 A' 1218 1174 413.59      
12 A' 1132 1092 10.02      
13 A' 1027 990 22.73      
14 A' 852 822 15.27      
15 A' 782 754 1.07      
16 A' 378 365 5.29      
17 A' 222 214 8.01      
18 A" 3135 3023 37.17      
19 A" 3110 2998 2.10      
20 A" 1491 1438 7.72      
21 A" 1296 1250 1.21      
22 A" 1178 1136 4.59      
23 A" 1033 996 0.01      
24 A" 811 782 0.56      
25 A" 347 335 23.61      
26 A" 232 224 2.37      
27 A" 59 57 0.74      

Unscaled Zero Point Vibrational Energy (zpe) 19826.5 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 19116.7 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 B3LYP/6-31+G**
ABC
0.59828 0.09504 0.08462

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.190 -0.281 0.000
C2 -0.704 -0.579 0.000
O3 0.000 0.694 0.000
C4 1.340 0.638 0.000
O5 2.009 -0.370 0.000
H6 -2.752 -1.221 0.000
H7 -2.477 0.291 0.888
H8 -2.477 0.291 -0.888
H9 -0.395 -1.143 -0.885
H10 -0.395 -1.143 0.885
H11 1.747 1.660 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51622.39763.64834.20031.09501.09411.09412.17952.17954.3898
C21.51621.45452.37882.72072.14652.16522.16521.09421.09423.3193
O32.39761.45451.34142.27333.35272.66182.66182.07742.07741.9962
C43.64832.37881.34141.20974.49473.93423.93422.63972.63971.0998
O54.20032.72072.27331.20974.83634.62024.62022.67582.67582.0467
H61.09502.14653.35274.49474.83631.77461.77462.51882.51885.3423
H71.09412.16522.66183.93424.62021.77461.77553.08762.52804.5280
H81.09412.16522.66183.93424.62021.77461.77552.52803.08764.5280
H92.17951.09422.07742.63972.67582.51883.08762.52801.76973.6373
H102.17951.09422.07742.63972.67582.51882.52803.08761.76973.6373
H114.38983.31931.99621.09982.04675.34234.52804.52803.63733.6373

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 107.610 C1 C2 H9 112.213
C1 C2 H10 112.213 C2 C1 H6 109.526
C2 C1 H7 111.057 C2 C1 H8 111.057
C2 O3 C4 116.542 O3 C2 H9 108.370
O3 C2 H10 108.370 O3 C4 O5 125.952
O3 C4 H11 109.314 O5 C4 H11 124.734
H6 C1 H7 108.325 H6 C1 H8 108.325
H7 C1 H8 108.466 H9 C2 H10 107.939
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.538      
2 C -0.024      
3 O -0.290      
4 C 0.376      
5 O -0.449      
6 H 0.153      
7 H 0.164      
8 H 0.164      
9 H 0.161      
10 H 0.161      
11 H 0.122      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.225 0.528 0.000 2.286
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.910 5.213 0.000
y 5.213 -29.867 0.000
z 0.000 0.000 -29.751
Traceless
 xyz
x -4.101 5.213 0.000
y 5.213 1.963 0.000
z 0.000 0.000 2.138
Polar
3z2-r24.275
x2-y2-4.043
xy5.213
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.957 0.073 0.000
y 0.073 6.423 0.000
z 0.000 0.000 4.958


<r2> (average value of r2) Å2
<r2> 137.548
(<r2>)1/2 11.728