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All results from a given calculation for HCCOH (ethynol)

using model chemistry: B3LYP/CEP-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 B3LYP/CEP-31G*
 hartrees
Energy at 0K-28.360341
Energy at 298.15K-28.360976
Nuclear repulsion energy30.255958
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 B3LYP/CEP-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' 3752 3623 89.28      
2 A' 3483 3363 106.03      
3 A' 2277 2199 130.44      
4 A' 1255 1212 101.11      
5 A' 1067 1031 92.49      
6 A' 668 645 73.61      
7 A' 326 315 8.14      
8 A" 570 550 88.90      
9 A" 357 345 8.15      

Unscaled Zero Point Vibrational Energy (zpe) 6876.8 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 6640.9 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 B3LYP/CEP-31G*
ABC
21.69949 0.31074 0.30635

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.116 0.000
C2 -0.002 1.359 0.000
O3 -0.100 -1.210 0.000
H4 0.019 2.431 0.000
H5 0.797 -1.597 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.24301.32952.31521.8893
C21.24302.57051.07233.0622
O31.32952.57053.64280.9768
H42.31521.07233.64284.1026
H51.88933.06220.97684.1026

picture of ethynol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 178.723 C1 O3 H5 109.050
C2 C1 O3 175.567
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.343      
2 C -0.256      
3 O -0.250      
4 H 0.410      
5 H 0.438      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.719 -0.698 0.000 1.855
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.918 -3.062 0.000
y -3.062 -11.983 0.000
z 0.000 0.000 -18.828
Traceless
 xyz
x -1.512 -3.062 0.000
y -3.062 5.890 0.000
z 0.000 0.000 -4.377
Polar
3z2-r2-8.754
x2-y2-4.935
xy-3.062
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.078 -0.231 0.000
y -0.231 5.863 0.000
z 0.000 0.000 1.873


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