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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-152.230766
Energy at 298.15K-152.231527
HF Energy-151.707740
Nuclear repulsion energy57.986266
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' 3871 3672 127.59      
2 A' 3539 3357 87.46      
3 A' 2240 2125 116.60      
4 A' 1281 1215 93.53      
5 A' 1082 1026 78.82      
6 A' 632 600 47.71      
7 A' 397 377 11.13      
8 A" 553 524 47.93      
9 A" 413 392 12.31      

Unscaled Zero Point Vibrational Energy (zpe) 7003.5 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 6643.5 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
21.72466 0.32220 0.31749

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 0.215 1.313 0.000
O3 -0.279 -1.164 0.000
H4 0.393 2.359 0.000
H5 0.555 -1.644 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.21191.31422.27331.8489
C21.21192.52571.06142.9759
O31.31422.52573.58680.9626
H42.27331.06143.58684.0059
H51.84892.97590.96264.0059

picture of ethynol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 179.465 C1 O3 H5 107.592
C2 C1 O3 177.922
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability