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All results from a given calculation for HCCOH (ethynol)

using model chemistry: HF/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/Def2TZVPP
 hartrees
Energy at 0K-151.736143
Energy at 298.15K-151.737239
HF Energy-151.736143
Nuclear repulsion energy59.096310
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 HF/Def2TZVPP
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' 4119 3734 179.08      
2 A' 3632 3292 104.79      
3 A' 2445 2216 170.60      
4 A' 1370 1241 118.74      
5 A' 1165 1056 93.41      
6 A' 793 719 55.44      
7 A' 477 432 16.97      
8 A" 696 631 81.66      
9 A" 538 488 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 7617.6 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 6904.6 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 HF/Def2TZVPP
ABC
23.71276 0.33439 0.32974

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.130 0.000
C2 -0.226 1.280 0.000
O3 0.106 -1.172 0.000
H4 -0.517 2.289 0.000
H5 1.025 -1.378 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.17251.30602.22041.8238
C21.17252.47461.04992.9386
O31.30602.47463.51670.9422
H42.22041.04993.51673.9787
H51.82382.93860.94223.9787

picture of ethynol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 175.034 C1 O3 H5 107.323
C2 C1 O3 173.540
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.184      
2 C -0.260      
3 O -0.367      
4 H 0.189      
5 H 0.255      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.490 -0.799 0.000 1.691
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.779 -2.136 0.000
y -2.136 -11.732 0.000
z 0.000 0.000 -18.847
Traceless
 xyz
x -2.489 -2.136 0.000
y -2.136 6.581 0.000
z 0.000 0.000 -4.092
Polar
3z2-r2-8.184
x2-y2-6.047
xy-2.136
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.618 0.294 0.000
y 0.294 5.382 0.000
z 0.000 0.000 2.475


<r2> (average value of r2) Å2
<r2> 39.893
(<r2>)1/2 6.316