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: LSDA/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at LSDA/6-31G(2df,p)
 hartrees
Energy at 0K-190.843941
Energy at 298.15K-190.847383
Nuclear repulsion energy102.423557
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 LSDA/6-31G(2df,p)
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' 3706 3647 35.46      
2 A' 3112 3062 2.58      
3 A' 3033 2984 13.32      
4 A' 2067 2034 31.08      
5 A' 1459 1436 90.05      
6 A' 1355 1333 36.89      
7 A' 1289 1268 12.27      
8 A' 1168 1149 99.30      
9 A' 991 975 83.46      
10 A' 879 865 37.19      
11 A' 617 607 21.12      
12 A' 206 202 1.18      
13 A" 3100 3050 3.88      
14 A" 983 967 0.23      
15 A" 862 849 26.45      
16 A" 624 614 1.36      
17 A" 467 460 100.60      
18 A" 265 260 2.05      

Unscaled Zero Point Vibrational Energy (zpe) 13091.0 cm-1
Scaled (by 0.984) Zero Point Vibrational Energy (zpe) 12881.6 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 LSDA/6-31G(2df,p)
ABC
1.46953 0.14675 0.13722

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.656 -0.490 0.000
C2 0.000 0.641 0.000
C3 -0.655 1.766 0.000
O4 0.124 -1.735 0.000
H5 1.751 -0.520 0.000
H6 -0.948 2.272 0.930
H7 -0.948 2.272 -0.930
H8 -0.846 -1.644 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8
C11.30742.60911.35431.09573.32683.32681.8940
C21.30741.30172.37942.10092.10362.10362.4363
C32.60911.30173.58653.31881.09881.09883.4146
O41.35432.37943.58652.03154.25134.25130.9741
H51.09572.10093.31882.03153.99333.99332.8302
H63.32682.10361.09884.25133.99331.86004.0260
H73.32682.10361.09884.25133.99331.86004.0260
H81.89402.43633.41460.97412.83024.02604.0260

picture of allenol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 179.878 C1 O4 H8 107.746
C2 C1 O4 126.744 C2 C1 H5 121.667
C2 C3 H6 122.176 C2 C3 H7 122.176
O4 C1 H5 111.589 H6 C3 H7 115.647
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.186      
2 C 0.286      
3 C -0.560      
4 O -0.345      
5 H 0.163      
6 H 0.160      
7 H 0.160      
8 H 0.322      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.982 0.439 0.000 1.076
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.806 0.858 0.000
y 0.858 -23.756 0.000
z 0.000 0.000 -23.986
Traceless
 xyz
x 3.066 0.858 0.000
y 0.858 -1.360 0.000
z 0.000 0.000 -1.705
Polar
3z2-r2-3.411
x2-y22.951
xy0.858
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.952 -2.097 0.000
y -2.097 8.582 0.000
z 0.000 0.000 3.426


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