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All results from a given calculation for HCCOH (ethynol)

using model chemistry: CCD/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 CCD/6-31G*
 hartrees
Energy at 0K-152.096280
Energy at 298.15K-152.096867
HF Energy-151.659189
Nuclear repulsion energy57.726673
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 CCD/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' 3764 3563 90.22      
2 A' 3526 3338 70.82      
3 A' 2321 2197 80.69      
4 A' 1312 1241 115.37      
5 A' 1083 1025 73.26      
6 A' 599 567 46.89      
7 A' 342 324 10.14      
8 A" 528 499 36.75      
9 A" 351 332 23.02      

Unscaled Zero Point Vibrational Energy (zpe) 6912.5 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 6542.6 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 CCD/6-31G*
ABC
21.69715 0.31952 0.31488

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.127 0.000
C2 0.166 1.323 0.000
O3 -0.240 -1.178 0.000
H4 0.321 2.378 0.000
H5 0.608 -1.654 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.20661.32752.27281.8820
C21.20662.53351.06623.0089
O31.32752.53353.59960.9724
H42.27281.06623.59964.0414
H51.88203.00890.97244.0414

picture of ethynol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 179.545 C1 O3 H5 108.849
C2 C1 O3 177.465
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability