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All results from a given calculation for HCCOH (ethynol)

using model chemistry: HSEh1PBE/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 HSEh1PBE/6-31G*
 hartrees
Energy at 0K-152.368637
Energy at 298.15K-152.369375
Nuclear repulsion energy58.135749
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 HSEh1PBE/6-31G*
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' 3764 3579 93.45      
2 A' 3536 3362 84.67      
3 A' 2327 2213 116.10      
4 A' 1273 1210 108.17      
5 A' 1116 1061 84.75      
6 A' 638 606 45.80      
7 A' 385 366 11.15      
8 A" 538 512 45.71      
9 A" 424 403 17.18      

Unscaled Zero Point Vibrational Energy (zpe) 6999.4 cm-1
Scaled (by 0.951) Zero Point Vibrational Energy (zpe) 6656.4 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 HSEh1PBE/6-31G*
ABC
22.15870 0.32429 0.31961

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.121 0.000
C2 0.113 1.320 0.000
O3 -0.196 -1.174 0.000
H4 0.225 2.379 0.000
H5 0.659 -1.632 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.20471.30952.26931.8721
C21.20472.51321.06463.0017
O31.30952.51323.57770.9690
H42.26931.06463.57774.0339
H51.87213.00170.96904.0339

picture of ethynol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 179.375 C1 O3 H5 109.595
C2 C1 O3 176.815
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.123      
2 C -0.173      
3 O -0.620      
4 H 0.218      
5 H 0.452      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.635 -0.823 0.000 1.831
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.796 -2.531 0.000
y -2.531 -11.523 0.000
z 0.000 0.000 -18.181
Traceless
 xyz
x -1.944 -2.531 0.000
y -2.531 5.965 0.000
z 0.000 0.000 -4.021
Polar
3z2-r2-8.042
x2-y2-5.272
xy-2.531
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.714 0.119 0.000
y 0.119 5.324 0.000
z 0.000 0.000 1.454


<r2> (average value of r2) Å2
<r2> 40.441
(<r2>)1/2 6.359