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: CCD/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCD/6-31G**
 hartrees
Energy at 0K-191.321927
Energy at 298.15K-191.325363
HF Energy-190.719224
Nuclear repulsion energy101.799109
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 CCD/6-31G**
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' 3918 3674 31.07      
2 A' 3287 3082 6.65      
3 A' 3204 3004 14.05      
4 A' 2104 1973 35.75      
5 A' 1563 1466 39.70      
6 A' 1466 1375 64.12      
7 A' 1328 1245 1.46      
8 A' 1229 1152 112.29      
9 A' 1013 950 113.84      
10 A' 939 880 30.33      
11 A' 623 584 19.90      
12 A' 208 195 0.78      
13 A" 3287 3082 9.53      
14 A" 1069 1002 1.66      
15 A" 914 857 20.34      
16 A" 632 593 0.58      
17 A" 393 369 133.44      
18 A" 263 246 2.98      

Unscaled Zero Point Vibrational Energy (zpe) 13719.9 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 12863.7 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 CCD/6-31G**
ABC
1.45163 0.14452 0.13504

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.664 -0.489 0.000
C2 0.000 0.645 0.000
C3 -0.652 1.786 0.000
O4 0.112 -1.753 0.000
H5 1.744 -0.527 0.000
H6 -0.933 2.280 0.922
H7 -0.933 2.280 -0.922
H8 -0.846 -1.661 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8
C11.31422.62831.37841.08073.32723.32721.9109
C21.31421.31412.40032.10072.09642.09642.4562
C32.62831.31413.62033.32971.08341.08343.4524
O41.37842.40033.62032.04074.26714.26710.9628
H51.08072.10073.32972.04073.98653.98652.8272
H63.32722.09641.08344.26713.98651.84474.0487
H73.32722.09641.08344.26713.98651.84474.0487
H81.91092.45623.45240.96282.82724.04874.0487

picture of allenol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 179.416 C1 O4 H8 108.106
C2 C1 O4 126.097 C2 C1 H5 122.300
C2 C3 H6 121.647 C2 C3 H7 121.647
O4 C1 H5 111.603 H6 C3 H7 116.706
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at CCD/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.140      
2 C -0.005      
3 C -0.335      
4 O -0.617      
5 H 0.166      
6 H 0.149      
7 H 0.149      
8 H 0.354      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.952 0.983 -0.002
y 0.983 -24.982 -0.003
z -0.002 -0.003 -24.303
Traceless
 xyz
x 3.690 0.983 -0.002
y 0.983 -2.354 -0.003
z -0.002 -0.003 -1.336
Polar
3z2-r2-2.672
x2-y24.029
xy0.983
xz-0.002
yz-0.003


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> 88.191
(<r2>)1/2 9.391