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All results from a given calculation for HCCOH (ethynol)

using model chemistry: BLYP/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at BLYP/STO-3G
 hartrees
Energy at 0K-150.461796
Energy at 298.15K-150.462178
Nuclear repulsion energy56.018957
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 BLYP/STO-3G
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' 3598 3328 147.16      
2 A' 3469 3210 11.70      
3 A' 2340 2165 15.76      
4 A' 1373 1270 37.20      
5 A' 997 923 19.97      
6 A' 651 602 17.90      
7 A' 332 307 5.49      
8 A" 521 482 29.04      
9 A" 315 292 2.07      

Unscaled Zero Point Vibrational Energy (zpe) 6797.6 cm-1
Scaled (by 0.9252) Zero Point Vibrational Energy (zpe) 6289.1 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 BLYP/STO-3G
ABC
17.37657 0.30371 0.29849

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.147 0.000
C2 -0.306 1.327 0.000
O3 0.149 -1.233 0.000
H4 -0.540 2.385 0.000
H5 1.185 -1.360 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.21971.38792.30291.9171
C21.21972.60061.08363.0735
O31.38792.60063.68351.0441
H42.30291.08363.68354.1237
H51.91713.07351.04414.1237

picture of ethynol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 177.923 C1 O3 H5 103.143
C2 C1 O3 171.622
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.000      
2 C -0.158      
3 O -0.169      
4 H 0.107      
5 H 0.220      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.444 -0.340 0.000 1.484
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.846 -2.647 0.000
y -2.647 -13.155 0.000
z 0.000 0.000 -16.287
Traceless
 xyz
x 0.876 -2.647 0.000
y -2.647 1.911 0.000
z 0.000 0.000 -2.787
Polar
3z2-r2-5.574
x2-y2-0.691
xy-2.647
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.179 -1.036 0.000
y -1.036 3.674 0.000
z 0.000 0.000 0.347


<r2> (average value of r2) Å2
<r2> 41.853
(<r2>)1/2 6.469