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All results from a given calculation for HCCOH (ethynol)

using model chemistry: MP2=FULL/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 MP2=FULL/cc-pVDZ
 hartrees
Energy at 0K-152.125276
Energy at 298.15K-152.125960
HF Energy-151.677127
Nuclear repulsion energy57.491886
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 MP2=FULL/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' 3819 3629 128.65      
2 A' 3531 3356 89.50      
3 A' 2229 2118 107.24      
4 A' 1281 1217 89.83      
5 A' 1076 1022 75.85      
6 A' 608 578 42.54      
7 A' 374 356 9.93      
8 A" 537 510 41.76      
9 A" 384 365 12.69      

Unscaled Zero Point Vibrational Energy (zpe) 6919.1 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 6575.9 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 MP2=FULL/cc-pVDZ
ABC
21.22670 0.31673 0.31208

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.118 0.000
C2 0.219 1.325 0.000
O3 -0.285 -1.173 0.000
H4 0.404 2.380 0.000
H5 0.561 -1.649 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.22631.32252.29821.8534
C21.22632.54841.07192.9927
O31.32252.54843.62000.9698
H42.29821.07193.62004.0321
H51.85342.99270.96984.0321

picture of ethynol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 179.626 C1 O3 H5 106.896
C2 C1 O3 177.853
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability