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All results from a given calculation for HCCOH (ethynol)

using model chemistry: B3LYP/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-152.607779
Energy at 298.15K-152.608572
Nuclear repulsion energy58.319475
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/aug-cc-pVTZ
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 3641 111.65      
2 A' 3486 3372 99.62      
3 A' 2277 2203 161.04      
4 A' 1250 1209 84.07      
5 A' 1083 1048 98.87      
6 A' 650 629 48.20      
7 A' 398 385 12.60      
8 A" 548 530 64.98      
9 A" 438 424 1.97      

Unscaled Zero Point Vibrational Energy (zpe) 6946.3 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 6720.6 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 B3LYP/aug-cc-pVTZ
ABC
22.75736 0.32616 0.32155

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.124 0.000
C2 0.043 1.320 0.000
O3 -0.135 -1.178 0.000
H4 0.091 2.378 0.000
H5 0.728 -1.611 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.19681.30872.25621.8814
C21.19682.50421.05943.0098
O31.30872.50423.56340.9654
H42.25621.05943.56344.0396
H51.88143.00980.96544.0396

picture of ethynol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 179.429 C1 O3 H5 110.735
C2 C1 O3 176.148
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.651      
2 C -0.995      
3 O -0.373      
4 H 0.501      
5 H 0.217      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.457 -0.767 0.000 1.647
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.371 -2.712 0.000
y -2.712 -12.595 0.000
z 0.000 0.000 -18.984
Traceless
 xyz
x -1.581 -2.712 0.000
y -2.712 5.583 0.000
z 0.000 0.000 -4.002
Polar
3z2-r2-8.003
x2-y2-4.776
xy-2.712
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.397 -0.065 0.000
y -0.065 6.208 -0.000
z 0.000 -0.000 3.326


<r2> (average value of r2) Å2
<r2> 40.782
(<r2>)1/2 6.386