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All results from a given calculation for C3H4O (allenol)

using model chemistry: HF/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/3-21G*
 hartrees
Energy at 0K-189.651705
Energy at 298.15K-189.655418
Nuclear repulsion energy102.390938
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 HF/3-21G*
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' 3890 3511 32.70      
2 A' 3396 3065 4.86      
3 A' 3287 2967 10.48      
4 A' 2254 2034 17.48      
5 A' 1654 1493 26.31      
6 A' 1535 1386 74.03      
7 A' 1400 1263 2.63      
8 A' 1288 1162 105.46      
9 A' 1098 991 49.75      
10 A' 1029 929 186.60      
11 A' 677 611 31.39      
12 A' 235 212 0.65      
13 A" 3356 3029 8.15      
14 A" 1183 1068 0.64      
15 A" 1053 950 21.39      
16 A" 700 632 5.34      
17 A" 411 371 221.40      
18 A" 324 293 0.69      

Unscaled Zero Point Vibrational Energy (zpe) 14384.6 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 12983.5 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 HF/3-21G*
ABC
1.46979 0.14628 0.13668

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.653 -0.465 0.000
C2 0.000 0.650 0.000
C3 -0.650 1.767 0.000
O4 0.121 -1.748 0.000
H5 1.722 -0.497 0.000
H6 -0.932 2.257 0.915
H7 -0.932 2.257 -0.915
H8 -0.845 -1.738 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8
C11.29182.58431.38951.06933.27973.27971.9667
C21.29181.29252.40082.06902.07092.07092.5331
C32.58431.29253.59853.27911.07561.07563.5105
O41.38952.40083.59852.03204.24094.24090.9661
H51.06932.06903.27912.03203.93253.93252.8517
H63.27972.07091.07564.24093.93251.83034.0996
H73.27972.07091.07564.24093.93251.83034.0996
H81.96672.53313.51050.96612.85174.09964.0996

picture of allenol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 179.811 C1 O4 H8 111.950
C2 C1 O4 127.080 C2 C1 H5 122.124
C2 C3 H6 121.700 C2 C3 H7 121.700
O4 C1 H5 110.796 H6 C3 H7 116.599
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.097      
2 C -0.135      
3 C -0.420      
4 O -0.675      
5 H 0.264      
6 H 0.235      
7 H 0.235      
8 H 0.398      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.183 1.196 0.000 1.682
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.973 1.058 0.000
y 1.058 -25.190 0.000
z 0.000 0.000 -24.606
Traceless
 xyz
x 3.924 1.058 0.000
y 1.058 -2.400 0.000
z 0.000 0.000 -1.524
Polar
3z2-r2-3.048
x2-y24.216
xy1.058
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.961 -2.365 0.000
y -2.365 7.542 0.000
z 0.000 0.000 2.200


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