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All results from a given calculation for HCCOH (ethynol)

using model chemistry: QCISD/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/6-311G**
 hartrees
Energy at 0K-152.188399
Energy at 298.15K-152.189174
HF Energy-151.708309
Nuclear repulsion energy58.000250
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 QCISD/6-311G**
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' 3884 3706 105.46      
2 A' 3512 3350 79.56      
3 A' 2275 2171 107.48      
4 A' 1309 1249 95.51      
5 A' 1079 1029 75.06      
6 A' 651 621 44.44      
7 A' 392 374 10.75      
8 A" 557 531 47.63      
9 A" 418 399 13.30      

Unscaled Zero Point Vibrational Energy (zpe) 7038.4 cm-1
Scaled (by 0.9541) Zero Point Vibrational Energy (zpe) 6715.3 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 QCISD/6-311G**
ABC
21.74876 0.32233 0.31763

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.124 0.000
C2 0.239 1.306 0.000
O3 -0.300 -1.160 0.000
H4 0.439 2.351 0.000
H5 0.526 -1.652 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.20661.31832.27011.8517
C21.20662.52471.06352.9720
O31.31832.52473.58800.9610
H42.27011.06353.58804.0037
H51.85172.97200.96104.0037

picture of ethynol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 179.403 C1 O3 H5 107.624
C2 C1 O3 178.278
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability