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All results from a given calculation for HCCOH (ethynol)

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-152.469852
Energy at 298.15K-152.470556
Nuclear repulsion energy58.049816
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 B3PW91/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3741 3579 87.91      
2 A' 3523 3370 81.94      
3 A' 2311 2211 114.05      
4 A' 1267 1212 106.56      
5 A' 1106 1058 84.42      
6 A' 629 602 46.09      
7 A' 376 360 10.76      
8 A" 530 507 43.93      
9 A" 410 392 18.61      

Unscaled Zero Point Vibrational Energy (zpe) 6946.6 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 6645.8 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 B3PW91/6-31G*
ABC
22.10640 0.32331 0.31865

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.121 0.000
C2 0.100 1.323 0.000
O3 -0.184 -1.178 0.000
H4 0.202 2.383 0.000
H5 0.675 -1.628 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.20631.31192.27121.8752
C21.20632.51711.06503.0072
O31.31192.51713.58190.9704
H42.27121.06503.58194.0395
H51.87523.00720.97044.0395

picture of ethynol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 179.237 C1 O3 H5 109.590
C2 C1 O3 176.661
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.125      
2 C -0.171      
3 O -0.620      
4 H 0.216      
5 H 0.450      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.643 -0.808 0.000 1.831
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.717 -2.584 0.000
y -2.584 -11.549 0.000
z 0.000 0.000 -18.149
Traceless
 xyz
x -1.868 -2.584 0.000
y -2.584 5.884 0.000
z 0.000 0.000 -4.016
Polar
3z2-r2-8.032
x2-y2-5.168
xy-2.584
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.716 0.080 0.000
y 0.080 5.357 0.000
z 0.000 0.000 1.456


<r2> (average value of r2) Å2
<r2> 40.514
(<r2>)1/2 6.365