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

using model chemistry: BLYP/6-31G*

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 BLYP/6-31G*
 hartrees
Energy at 0K-268.292847
Energy at 298.15K-268.299849
HF Energy-268.292847
Nuclear repulsion energy175.187804
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 BLYP/6-31G*
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' 3049 3024 26.12      
2 A' 2992 2967 14.30      
3 A' 2984 2960 15.78      
4 A' 2957 2933 82.74      
5 A' 1746 1732 245.80      
6 A' 1505 1492 5.03      
7 A' 1488 1476 2.79      
8 A' 1407 1395 8.30      
9 A' 1372 1361 1.73      
10 A' 1364 1353 13.44      
11 A' 1143 1134 335.61      
12 A' 1106 1097 13.90      
13 A' 993 985 21.77      
14 A' 817 810 14.05      
15 A' 758 752 0.66      
16 A' 366 363 5.14      
17 A' 216 215 6.25      
18 A" 3060 3035 41.91      
19 A" 3028 3004 7.59      
20 A" 1480 1468 4.83      
21 A" 1264 1254 0.43      
22 A" 1154 1145 4.34      
23 A" 983 975 0.09      
24 A" 797 790 0.80      
25 A" 345 342 17.22      
26 A" 229 227 1.48      
27 A" 48 48 0.56      

Unscaled Zero Point Vibrational Energy (zpe) 19324.3 cm-1
Scaled (by 0.9919) Zero Point Vibrational Energy (zpe) 19167.8 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 BLYP/6-31G*
ABC
0.58288 0.09366 0.08325

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.208 -0.270 0.000
C2 -0.712 -0.576 0.000
O3 0.000 0.711 0.000
C4 1.358 0.628 0.000
O5 2.022 -0.394 0.000
H6 -2.779 -1.213 0.000
H7 -2.493 0.308 0.894
H8 -2.493 0.308 -0.894
H9 -0.401 -1.147 -0.890
H10 -0.401 -1.147 0.890
H11 1.769 1.659 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.52642.41563.67654.23111.10291.10191.10192.19652.19654.4197
C21.52641.47162.39502.74012.16262.18012.18011.10211.10213.3400
O32.41561.47161.36012.30423.38022.67892.67892.09912.09912.0070
C43.67652.39501.36011.21944.52803.96603.96602.65292.65291.1099
O54.23112.74012.30421.21944.87024.65574.65572.68882.68882.0689
H61.10292.16263.38024.52804.87021.78721.78722.54002.54005.3791
H71.10192.18012.67893.96604.65571.78721.78743.11062.54824.5595
H81.10192.18012.67893.96604.65571.78721.78742.54823.11064.5595
H92.19651.10212.09912.65292.68882.54003.11062.54821.78053.6574
H102.19651.10212.09912.65292.68882.54002.54823.11061.78053.6574
H114.41973.34002.00701.10992.06895.37914.55954.55953.65743.6574

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 107.353 C1 C2 H9 112.365
C1 C2 H10 112.365 C2 C1 H6 109.625
C2 C1 H7 111.058 C2 C1 H8 111.058
C2 O3 C4 115.460 O3 C2 H9 108.436
O3 C2 H10 108.436 O3 C4 O5 126.492
O3 C4 H11 108.270 O5 C4 H11 125.238
H6 C1 H7 108.310 H6 C1 H8 108.310
H7 C1 H8 108.393 H9 C2 H10 107.758
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.421      
2 C -0.028      
3 O -0.372      
4 C 0.356      
5 O -0.391      
6 H 0.141      
7 H 0.150      
8 H 0.150      
9 H 0.149      
10 H 0.149      
11 H 0.115      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.041 0.416 0.000 2.083
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.564 4.363 0.000
y 4.363 -29.276 0.000
z 0.000 0.000 -29.121
Traceless
 xyz
x -3.366 4.363 0.000
y 4.363 1.566 0.000
z 0.000 0.000 1.800
Polar
3z2-r23.599
x2-y2-3.288
xy4.363
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.389 0.355 0.000
y 0.355 5.808 0.000
z 0.000 0.000 4.282


<r2> (average value of r2) Å2
<r2> 138.901
(<r2>)1/2 11.786