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: MP2=FULL/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2=FULL/cc-pVTZ
 hartrees
Energy at 0K-191.558687
Energy at 298.15K 
HF Energy-190.787826
Nuclear repulsion energy102.422257
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 MP2=FULL/cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at MP2=FULL/cc-pVTZ
ABC
1.46805 0.14636 0.13679

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.659 -0.485 0.000
C2 0.000 0.643 0.000
C3 -0.655 1.772 0.000
O4 0.119 -1.742 0.000
H5 1.734 -0.510 0.000
H6 -0.934 2.258 0.922
H7 -0.934 2.258 -0.922
H8 -0.839 -1.646 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8
C11.30642.61201.36811.07503.30373.30371.8957
C21.30641.30562.38742.08242.08142.08142.4378
C32.61201.30563.59793.30421.07901.07903.4231
O41.36812.38743.59792.03144.23764.23760.9624
H51.07502.08243.30422.03143.95393.95392.8127
H63.30372.08141.07904.23763.95391.84404.0128
H73.30372.08141.07904.23763.95391.84404.0128
H81.89572.43783.42310.96242.81274.01284.0128

picture of allenol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 179.812 C1 O4 H8 107.590
C2 C1 O4 126.399 C2 C1 H5 121.659
C2 C3 H6 121.292 C2 C3 H7 121.292
O4 C1 H5 111.942 H6 C3 H7 117.415
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2=FULL/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.008      
2 C -0.041      
3 C -0.351      
4 O -0.338      
5 H 0.180      
6 H 0.155      
7 H 0.155      
8 H 0.231      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.243 0.468 0.000
y 0.468 -24.906 0.000
z 0.000 0.000 -24.790
Traceless
 xyz
x 3.605 0.468 0.000
y 0.468 -1.889 0.000
z 0.000 0.000 -1.715
Polar
3z2-r2-3.431
x2-y23.663
xy0.468
xz0.000
yz0.000


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


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