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All results from a given calculation for HCCOH (ethynol)

using model chemistry: B3PW91/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/cc-pVDZ
 hartrees
Energy at 0K-152.488537
Energy at 298.15K-152.489324
Nuclear repulsion energy58.004734
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 B3PW91/cc-pVDZ
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' 3766 3634 113.53      
2 A' 3514 3391 97.38      
3 A' 2303 2222 129.63      
4 A' 1263 1219 87.43      
5 A' 1104 1065 88.87      
6 A' 651 628 42.16      
7 A' 396 382 11.55      
8 A" 548 529 50.90      
9 A" 435 420 9.26      

Unscaled Zero Point Vibrational Energy (zpe) 6989.0 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 6744.4 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 B3PW91/cc-pVDZ
ABC
21.76209 0.32292 0.31820

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.118 0.000
C2 0.154 1.319 0.000
O3 -0.230 -1.171 0.000
H4 0.291 2.381 0.000
H5 0.621 -1.637 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.21071.30982.28091.8623
C21.21072.51981.07022.9932
O31.30982.51983.58980.9703
H42.28091.07023.58984.0315
H51.86232.99320.97034.0315

picture of ethynol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 179.979 C1 O3 H5 108.610
C2 C1 O3 177.218
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.007      
2 C -0.058      
3 O -0.153      
4 H 0.020      
5 H 0.184      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.481 -1.012 0.000 1.794
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.126 -2.212 0.000
y -2.212 -11.610 0.000
z 0.000 0.000 -18.329
Traceless
 xyz
x -2.157 -2.212 0.000
y -2.212 6.117 0.000
z 0.000 0.000 -3.960
Polar
3z2-r2-7.921
x2-y2-5.516
xy-2.212
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.922 0.231 0.000
y 0.231 5.509 0.000
z 0.000 0.000 1.675


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