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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-152.115282
Energy at 298.15K-152.115921
HF Energy-151.668514
Nuclear repulsion energy57.811732
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' 3907 3663 90.69      
2 A' 3559 3337 72.22      
3 A' 2323 2178 84.34      
4 A' 1297 1216 107.35      
5 A' 1085 1017 75.96      
6 A' 613 575 43.44      
7 A' 354 332 10.08      
8 A" 538 504 37.24      
9 A" 365 343 19.56      

Unscaled Zero Point Vibrational Energy (zpe) 7021.0 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 6582.9 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 CCD/6-31G**
ABC
21.99810 0.31997 0.31539

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 0.192 1.319 0.000
O3 -0.261 -1.173 0.000
H4 0.363 2.366 0.000
H5 0.573 -1.655 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.20681.32662.26761.8727
C21.20682.53291.06082.9985
O31.32662.53293.59360.9635
H42.26761.06083.59364.0266
H51.87272.99850.96354.0266

picture of ethynol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 179.883 C1 O3 H5 108.674
C2 C1 O3 177.806
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability