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All results from a given calculation for C3H4O (allenol)

using model chemistry: QCISD/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 QCISD/3-21G
 hartrees
Energy at 0K-190.066022
Energy at 298.15K-190.069365
HF Energy-189.647163
Nuclear repulsion energy100.270858
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 QCISD/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' 3498 3390 6.17      
2 A' 3197 3098 5.49      
3 A' 3094 2999 12.23      
4 A' 2027 1964 17.54      
5 A' 1552 1504 5.95      
6 A' 1440 1396 43.55      
7 A' 1332 1291 7.23      
8 A' 1180 1143 68.73      
9 A' 960 930 54.31      
10 A' 928 899 103.97      
11 A' 604 585 22.48      
12 A' 186 180 0.42      
13 A" 3158 3061 10.95      
14 A" 1103 1069 0.16      
15 A" 932 903 26.87      
16 A" 623 603 0.31      
17 A" 393 381 164.92      
18 A" 230 223 4.96      

Unscaled Zero Point Vibrational Energy (zpe) 13216.6 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 12809.6 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 QCISD/3-21G
ABC
1.39405 0.14063 0.13118

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.680 -0.464 0.000
C2 0.000 0.667 0.000
C3 -0.700 1.787 0.000
O4 0.150 -1.785 0.000
H5 1.766 -0.501 0.000
H6 -1.002 2.282 0.926
H7 -1.002 2.282 -0.926
H8 -0.842 -1.727 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8
C11.31952.64071.42341.08613.35063.35061.9783
C21.31951.32132.45592.11702.11432.11432.5373
C32.64071.32133.67163.36401.09221.09223.5169
O41.42342.45593.67162.06404.32684.32680.9938
H51.08612.11703.36402.06404.03264.03262.8820
H63.35062.11431.09224.32684.03261.85154.1174
H73.35062.11431.09224.32684.03261.85154.1174
H81.97832.53733.51690.99382.88204.11744.1174

picture of allenol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 179.052 C1 O4 H8 108.549
C2 C1 O4 127.069 C2 C1 H5 122.998
C2 C3 H6 122.045 C2 C3 H7 122.045
O4 C1 H5 109.933 H6 C3 H7 115.906
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at QCISD/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.079      
2 C -0.145      
3 C -0.409      
4 O -0.651      
5 H 0.263      
6 H 0.235      
7 H 0.235      
8 H 0.392      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.344 1.118 -0.002
y 1.118 -25.378 -0.004
z -0.002 -0.004 -24.752
Traceless
 xyz
x 3.721 1.118 -0.002
y 1.118 -2.330 -0.004
z -0.002 -0.004 -1.392
Polar
3z2-r2-2.784
x2-y24.034
xy1.118
xz-0.002
yz-0.004


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> 90.542
(<r2>)1/2 9.515