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All results from a given calculation for HCCOH (ethynol)

using model chemistry: B3LYP/CEP-121G*

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-121G*
 hartrees
Energy at 0K-28.380925
Energy at 298.15K-28.381623
Nuclear repulsion energy30.583659
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-121G*
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' 3735 3621 76.13      
2 A' 3463 3357 81.35      
3 A' 2242 2173 130.74      
4 A' 1264 1225 110.84      
5 A' 1062 1029 80.94      
6 A' 647 627 60.80      
7 A' 349 338 10.49      
8 A" 550 534 76.78      
9 A" 408 395 3.73      

Unscaled Zero Point Vibrational Energy (zpe) 6859.0 cm-1
Scaled (by 0.9694) Zero Point Vibrational Energy (zpe) 6649.1 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-121G*
ABC
21.89399 0.31871 0.31414

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.125 0.000
C2 0.012 1.336 0.000
O3 -0.112 -1.197 0.000
H4 0.046 2.403 0.000
H5 0.777 -1.593 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.21071.32652.27851.8852
C21.21072.53551.06803.0266
O31.32652.53553.60330.9731
H42.27851.06803.60334.0620
H51.88523.02660.97314.0620

picture of ethynol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 178.722 C1 O3 H5 109.165
C2 C1 O3 175.725
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.066      
2 C -0.295      
3 O -0.387      
4 H 0.299      
5 H 0.449      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.711 -0.681 0.000 1.841
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.920 -2.998 0.000
y -2.998 -12.039 0.000
z 0.000 0.000 -18.780
Traceless
 xyz
x -1.510 -2.998 0.000
y -2.998 5.810 0.000
z 0.000 0.000 -4.301
Polar
3z2-r2-8.601
x2-y2-4.880
xy-2.998
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.148 -0.168 0.000
y -0.168 5.826 0.000
z 0.000 0.000 1.957


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