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All results from a given calculation for HCCOH (ethynol)

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G**
 hartrees
Energy at 0K-152.117558
Energy at 298.15K-152.118172
HF Energy-151.667564
Nuclear repulsion energy57.720020
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/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3867 3613 105.66      
2 A' 3574 3340 80.42      
3 A' 2260 2112 90.23      
4 A' 1267 1184 103.18      
5 A' 1080 1009 77.07      
6 A' 592 554 44.84      
7 A' 359 335 10.48      
8 A" 525 491 35.05      
9 A" 360 336 20.81      

Unscaled Zero Point Vibrational Energy (zpe) 6942.0 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 6486.6 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 MP2=FULL/6-31G**
ABC
21.91455 0.31896 0.31438

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.123 0.000
C2 0.171 1.326 0.000
O3 -0.244 -1.178 0.000
H4 0.321 2.374 0.000
H5 0.599 -1.649 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.21491.32342.27401.8712
C21.21492.53781.05903.0060
O31.32342.53783.59660.9660
H42.27401.05903.59664.0333
H51.87123.00600.96604.0333

picture of ethynol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 179.966 C1 O3 H5 108.623
C2 C1 O3 177.500
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability