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All results from a given calculation for HCCOH (ethynol)

using model chemistry: MP4/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4/STO-3G
 hartrees
Energy at 0K-149.899826
Energy at 298.15K-149.900460
Nuclear repulsion energy56.175455
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 MP4/STO-3G
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' 3704 3704        
2 A' 3681 3681        
3 A' 2421 2421        
4 A' 1481 1481        
5 A' 1023 1023        
6 A' 727 727        
7 A' 373 373        
8 A" 649 649        
9 A" 386 386        

Unscaled Zero Point Vibrational Energy (zpe) 7222.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7222.3 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 MP4/STO-3G
ABC
18.02866 0.30430 0.29925

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.147 0.000
C2 -0.058 1.357 0.000
O3 -0.061 -1.244 0.000
H4 -0.094 2.439 0.000
H5 0.933 -1.503 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.21101.39272.29371.8956
C21.21102.60101.08283.0265
O31.39272.60103.68331.0275
H42.29371.08283.68334.0736
H51.89563.02651.02754.0736

picture of ethynol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 179.209 C1 O3 H5 102.061
C2 C1 O3 174.736
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability