return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C3H4O (allenol)

using model chemistry: B3LYP/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/CEP-31G*
 hartrees
Energy at 0K-35.238402
Energy at 298.15K-35.241690
Nuclear repulsion energy53.949769
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/CEP-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' 3782 3653 27.25      
2 A' 3204 3094 6.63      
3 A' 3109 3002 22.68      
4 A' 2062 1992 32.73      
5 A' 1490 1438 65.28      
6 A' 1401 1353 63.97      
7 A' 1259 1216 10.52      
8 A' 1181 1140 124.55      
9 A' 989 955 133.88      
10 A' 884 854 60.35      
11 A' 591 571 21.22      
12 A' 201 194 0.43      
13 A" 3179 3070 14.55      
14 A" 998 964 1.20      
15 A" 864 835 42.68      
16 A" 599 579 0.03      
17 A" 411 397 125.90      
18 A" 227 220 6.22      

Unscaled Zero Point Vibrational Energy (zpe) 13216.2 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 12762.9 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/CEP-31G*
ABC
1.40804 0.13933 0.13026

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.678 -0.507 0.000
C2 0.000 0.654 0.000
C3 -0.669 1.822 0.000
O4 0.116 -1.779 0.000
H5 1.771 -0.552 0.000
H6 -0.951 2.321 0.938
H7 -0.951 2.321 -0.938
H8 -0.854 -1.672 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8
C11.34512.69131.39101.09333.39623.39621.9245
C21.34511.34622.43642.14252.13592.13592.4780
C32.69131.34623.68643.40431.09881.09883.4995
O41.39102.43643.68642.06064.33974.33970.9753
H51.09332.14253.40432.06064.06694.06692.8536
H63.39622.13591.09884.33974.06691.87524.1033
H73.39622.13591.09884.33974.06691.87524.1033
H81.92452.47803.49950.97532.85364.10334.1033

picture of allenol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 179.504 C1 O4 H8 107.542
C2 C1 O4 125.856 C2 C1 H5 122.618
C2 C3 H6 121.427 C2 C3 H7 121.427
O4 C1 H5 111.526 H6 C3 H7 117.144
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.186      
2 C -0.055      
3 C -0.418      
4 O -0.369      
5 H 0.243      
6 H 0.204      
7 H 0.204      
8 H 0.376      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.024 0.911 0.000 1.370
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.867 0.748 0.000
y 0.748 -24.722 0.000
z 0.000 0.000 -24.418
Traceless
 xyz
x 3.703 0.748 0.000
y 0.748 -2.080 0.000
z 0.000 0.000 -1.623
Polar
3z2-r2-3.246
x2-y23.855
xy0.748
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.785 -2.472 0.000
y -2.472 8.906 0.000
z 0.000 0.000 2.916


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000