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All results from a given calculation for HCCOH (ethynol)

using model chemistry: BLYP/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-152.512262
Energy at 298.15K-152.512811
Nuclear repulsion energy57.416826
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/6-31+G**
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' 3621 3602 84.69      
2 A' 3425 3407 93.18      
3 A' 2199 2187 150.38      
4 A' 1196 1189 73.26      
5 A' 1039 1034 99.37      
6 A' 580 577 62.47      
7 A' 341 339 9.00      
8 A" 493 491 61.37      
9 A" 354 353 22.71      

Unscaled Zero Point Vibrational Energy (zpe) 6624.0 cm-1
Scaled (by 0.9947) Zero Point Vibrational Energy (zpe) 6588.9 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/6-31+G**
ABC
21.89106 0.31610 0.31160

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.123 0.000
C2 -0.003 1.343 0.000
O3 -0.098 -1.201 0.000
H4 0.011 2.413 0.000
H5 0.795 -1.604 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.21931.32782.28931.9019
C21.21932.54521.07023.0533
O31.32782.54523.61520.9800
H42.28931.07023.61524.0929
H51.90193.05330.98004.0929

picture of ethynol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 179.079 C1 O3 H5 110.082
C2 C1 O3 175.603
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.178      
2 C 0.214      
3 O -0.568      
4 H 0.164      
5 H 0.369      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.654 -0.747 0.000 1.815
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.396 -3.070 0.000
y -3.070 -12.951 0.000
z 0.000 0.000 -19.343
Traceless
 xyz
x -1.249 -3.070 0.000
y -3.070 5.419 0.000
z 0.000 0.000 -4.169
Polar
3z2-r2-8.338
x2-y2-4.445
xy-3.070
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.594 -0.161 0.000
y -0.161 6.451 0.000
z 0.000 0.000 2.539


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