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All results from a given calculation for HCCOH (ethynol)

using model chemistry: B3PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-152.511719
Energy at 298.15K-152.512481
Nuclear repulsion energy58.348259
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 B3PW91/6-311G*
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' 3773 3632 75.78      
2 A' 3490 3360 80.77      
3 A' 2297 2211 138.69      
4 A' 1268 1220 117.83      
5 A' 1102 1061 91.24      
6 A' 627 603 52.59      
7 A' 399 384 13.04      
8 A" 530 510 51.63      
9 A" 439 423 20.66      

Unscaled Zero Point Vibrational Energy (zpe) 6962.3 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 6702.6 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 B3PW91/6-311G*
ABC
22.74402 0.32653 0.32191

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.121 0.000
C2 0.092 1.317 0.000
O3 -0.176 -1.171 0.000
H4 0.182 2.377 0.000
H5 0.672 -1.631 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.20001.30392.26331.8762
C21.20002.50291.06323.0046
O31.30392.50293.56590.9647
H42.26331.06323.56594.0374
H51.87623.00460.96474.0374

picture of ethynol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 179.557 C1 O3 H5 110.702
C2 C1 O3 176.652
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.133      
2 C -0.257      
3 O -0.540      
4 H 0.241      
5 H 0.423      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.698 -0.896 0.000 1.920
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.203 -2.759 0.000
y -2.759 -11.715 0.000
z 0.000 0.000 -18.622
Traceless
 xyz
x -2.035 -2.759 0.000
y -2.759 6.198 0.000
z 0.000 0.000 -4.163
Polar
3z2-r2-8.326
x2-y2-5.488
xy-2.759
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.969 0.057 0.000
y 0.057 5.511 0.000
z 0.000 0.000 1.763


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