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All results from a given calculation for HCCOH (ethynol)

using model chemistry: B2PLYP/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 B2PLYP/6-31G*
 hartrees
Energy at 0K-152.380722
Energy at 298.15K-152.381326
HF Energy-152.237814
Nuclear repulsion energy57.844859
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 B2PLYP/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' 3734 3544 89.57      
2 A' 3539 3360 79.27      
3 A' 2280 2164 98.06      
4 A' 1281 1216 109.62      
5 A' 1085 1030 76.45      
6 A' 606 575 44.10      
7 A' 349 331 9.73      
8 A" 520 494 37.26      
9 A" 362 343 20.15      

Unscaled Zero Point Vibrational Energy (zpe) 6877.7 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 6528.3 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 B2PLYP/6-31G*
ABC
21.96166 0.32083 0.31621

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.123 0.000
C2 0.093 1.329 0.000
O3 -0.179 -1.184 0.000
H4 0.191 2.387 0.000
H5 0.685 -1.627 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.20941.31962.27201.8793
C21.20942.52791.06273.0144
O31.31962.52793.59050.9715
H42.27201.06273.59054.0443
H51.87933.01440.97154.0443

picture of ethynol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 179.164 C1 O3 H5 109.288
C2 C1 O3 176.607
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.145      
2 C -0.173      
3 O -0.652      
4 H 0.223      
5 H 0.458      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.706 0.052 0.000
y 0.052 5.273 0.000
z 0.000 0.000 1.435


<r2> (average value of r2) Å2
<r2> 40.826
(<r2>)1/2 6.390