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: B3PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-311G**
 hartrees
Energy at 0K-191.849152
Energy at 298.15K-191.852652
Nuclear repulsion energy102.249173
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 B3PW91/6-311G**
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' 3840 3699 38.40      
2 A' 3190 3072 4.58      
3 A' 3098 2984 19.64      
4 A' 2069 1993 32.22      
5 A' 1499 1444 75.06      
6 A' 1414 1362 42.23      
7 A' 1296 1248 11.65      
8 A' 1204 1159 130.81      
9 A' 999 963 111.48      
10 A' 922 888 39.83      
11 A' 629 606 25.03      
12 A' 216 208 0.65      
13 A" 3168 3052 7.78      
14 A" 1028 990 0.97      
15 A" 904 871 29.19      
16 A" 638 614 0.99      
17 A" 442 426 118.25      
18 A" 267 257 4.35      

Unscaled Zero Point Vibrational Energy (zpe) 13411.9 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 12917.0 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 B3PW91/6-311G**
ABC
1.48032 0.14557 0.13624

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.651 -0.491 0.000
C2 0.000 0.643 0.000
C3 -0.642 1.779 0.000
O4 0.112 -1.746 0.000
H5 1.736 -0.523 0.000
H6 -0.921 2.279 0.926
H7 -0.921 2.279 -0.926
H8 -0.847 -1.661 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8
C11.30782.61251.36641.08513.31733.31731.9014
C21.30781.30482.39212.09162.09372.09372.4553
C32.61251.30483.60513.31001.08901.08903.4467
O41.36642.39213.60512.03284.25804.25800.9627
H51.08512.09163.31002.03283.97173.97172.8225
H63.31732.09371.08904.25803.97171.85224.0487
H73.31732.09371.08904.25803.97171.85224.0487
H81.90142.45533.44670.96272.82254.04874.0487

picture of allenol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 179.596 C1 O4 H8 108.192
C2 C1 O4 126.882 C2 C1 H5 121.595
C2 C3 H6 121.743 C2 C3 H7 121.743
O4 C1 H5 111.523 H6 C3 H7 116.513
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.030      
2 C -0.123      
3 C -0.254      
4 O -0.329      
5 H 0.143      
6 H 0.141      
7 H 0.141      
8 H 0.250      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.991 0.706 0.000 1.216
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.017 0.789 0.000
y 0.789 -24.240 0.000
z 0.000 0.000 -24.404
Traceless
 xyz
x 3.306 0.789 0.000
y 0.789 -1.530 0.000
z 0.000 0.000 -1.776
Polar
3z2-r2-3.551
x2-y23.224
xy0.789
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.882 -2.123 0.000
y -2.123 8.616 0.000
z 0.000 0.000 3.284


<r2> (average value of r2) Å2
<r2> 87.505
(<r2>)1/2 9.354