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All results from a given calculation for HCCOH (ethynol)

using model chemistry: MP2=FULL/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 MP2=FULL/6-311G*
 hartrees
Energy at 0K-152.208008
Energy at 298.15K-152.208655
HF Energy-151.696930
Nuclear repulsion energy57.977660
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/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' 3822 3619 104.01      
2 A' 3517 3331 81.99      
3 A' 2239 2121 113.58      
4 A' 1283 1215 126.23      
5 A' 1083 1026 76.82      
6 A' 579 548 54.05      
7 A' 374 354 11.77      
8 A" 520 493 38.71      
9 A" 383 362 26.22      

Unscaled Zero Point Vibrational Energy (zpe) 6899.7 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 6534.7 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/6-311G*
ABC
22.46655 0.32189 0.31735

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.120 0.000
C2 0.123 1.326 0.000
O3 -0.202 -1.177 0.000
H4 0.239 2.382 0.000
H5 0.643 -1.638 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.21241.31222.27491.8716
C21.21242.52371.06253.0092
O31.31222.52373.58610.9630
H42.27491.06253.58614.0402
H51.87163.00920.96304.0402

picture of ethynol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 179.532 C1 O3 H5 109.742
C2 C1 O3 176.942
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability