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: PBEPBE/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/Def2TZVPP
 hartrees
Energy at 0K-191.721295
Energy at 298.15K-191.724672
HF Energy-191.721295
Nuclear repulsion energy101.600984
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 PBEPBE/Def2TZVPP
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' 3690 3645 29.96      
2 A' 3115 3077 2.98      
3 A' 3024 2987 20.99      
4 A' 1999 1975 28.09      
5 A' 1450 1432 56.50      
6 A' 1369 1353 44.60      
7 A' 1250 1235 9.24      
8 A' 1160 1146 111.74      
9 A' 962 950 113.01      
10 A' 883 872 36.49      
11 A' 608 601 20.98      
12 A' 208 205 0.63      
13 A" 3088 3051 6.22      
14 A" 996 984 1.29      
15 A" 855 844 29.86      
16 A" 613 605 0.09      
17 A" 429 424 93.78      
18 A" 252 249 3.58      

Unscaled Zero Point Vibrational Energy (zpe) 12974.2 cm-1
Scaled (by 0.9879) Zero Point Vibrational Energy (zpe) 12817.2 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 PBEPBE/Def2TZVPP
ABC
1.45310 0.14402 0.13469

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.655 -0.493 0.000
C2 0.000 0.648 0.000
C3 -0.646 1.790 0.000
O4 0.113 -1.756 0.000
H5 1.745 -0.527 0.000
H6 -0.925 2.295 0.930
H7 -0.925 2.295 -0.930
H8 -0.854 -1.684 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8
C11.31592.62781.37371.09133.33713.33711.9215
C21.31591.31192.40682.10432.10562.10562.4833
C32.62781.31193.62643.32981.09461.09463.4801
O41.37372.40683.62642.04294.28424.28420.9698
H51.09132.10433.32982.04293.99543.99542.8449
H63.33712.10561.09464.28423.99541.86014.0867
H73.33712.10561.09464.28423.99541.86014.0867
H81.92152.48333.48010.96982.84494.08674.0867

picture of allenol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 179.659 C1 O4 H8 108.935
C2 C1 O4 126.964 C2 C1 H5 121.610
C2 C3 H6 121.821 C2 C3 H7 121.821
O4 C1 H5 111.426 H6 C3 H7 116.354
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.022      
2 C -0.105      
3 C -0.189      
4 O -0.258      
5 H 0.105      
6 H 0.112      
7 H 0.112      
8 H 0.201      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.947 0.645 0.000 1.146
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.528 0.758 0.000
y 0.758 -24.550 0.000
z 0.000 0.000 -24.842
Traceless
 xyz
x 3.169 0.758 0.000
y 0.758 -1.365 0.000
z 0.000 0.000 -1.803
Polar
3z2-r2-3.606
x2-y23.023
xy0.758
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.793 -2.043 0.000
y -2.043 9.643 0.000
z 0.000 0.000 4.238


<r2> (average value of r2) Å2
<r2> 88.606
(<r2>)1/2 9.413