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All results from a given calculation for CH3CH2O (Ethoxy radical)

using model chemistry: HSEh1PBE/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at HSEh1PBE/STO-3G
 hartrees
Energy at 0K-152.246565
Energy at 298.15K 
HF Energy-152.246565
Nuclear repulsion energy72.127226
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 HSEh1PBE/STO-3G
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' 3534 3121 0.54      
2 A' 3359 2966 0.50      
3 A' 3295 2910 3.89      
4 A' 1696 1498 4.48      
5 A' 1607 1419 5.04      
6 A' 1572 1388 3.06      
7 A' 1495 1320 8.67      
8 A' 1181 1043 3.60      
9 A' 1152 1017 7.41      
10 A' 975 861 2.93      
11 A' 414 366 1.58      
12 A" 3541 3127 0.84      
13 A" 3394 2998 7.01      
14 A" 1688 1491 2.83      
15 A" 1360 1201 2.18      
16 A" 905 799 0.22      
17 A" 223 197 3.48      
18 A" 409i 361i 59.05      

Unscaled Zero Point Vibrational Energy (zpe) 15490.4 cm-1
Scaled (by 0.8831) Zero Point Vibrational Energy (zpe) 13679.6 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 HSEh1PBE/STO-3G
ABC
1.24987 0.30070 0.26695

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.092 -0.570 0.000
C2 0.000 0.538 0.000
O3 -1.361 0.042 0.000
H4 2.091 -0.115 0.000
H5 0.996 -1.204 0.891
H6 0.996 -1.204 -0.891
H7 0.129 1.189 0.891
H8 0.129 1.189 -0.891

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8
C11.55542.52811.09811.09731.09732.19432.1943
C21.55541.44872.19072.19512.19511.11131.1113
O32.52811.44873.45592.81082.81082.08102.0810
H41.09812.19073.45591.78281.78282.51892.5189
H51.09732.19512.81081.78281.78112.54503.1068
H61.09732.19512.81081.78281.78113.10682.5450
H72.19431.11132.08102.51892.54503.10681.7826
H82.19431.11132.08102.51893.10682.54501.7826

picture of Ethoxy radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 114.561 C1 C2 H7 109.622
C1 C2 H8 109.622 C2 C1 H4 110.101
C2 C1 H5 110.493 C2 C1 H6 110.493
O3 C2 H7 108.037 O3 C2 H8 108.037
H4 C1 H5 108.598 H4 C1 H6 108.598
H5 C1 H6 108.500 H7 C2 H8 106.654
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.241      
2 C -0.080      
3 O -0.097      
4 H 0.080      
5 H 0.082      
6 H 0.082      
7 H 0.087      
8 H 0.087      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.144 0.458 0.000 1.233
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.356 0.075 0.000
y 0.075 -17.256 0.000
z 0.000 0.000 -16.613
Traceless
 xyz
x -2.421 0.075 0.000
y 0.075 0.728 0.000
z 0.000 0.000 1.693
Polar
3z2-r23.385
x2-y2-2.100
xy0.075
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.143 0.078 0.000
y 0.078 1.704 0.000
z 0.000 0.000 1.987


<r2> (average value of r2) Å2
<r2> 52.058
(<r2>)1/2 7.215