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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-152.098150
Energy at 298.15K-152.098701
HF Energy-151.658275
Nuclear repulsion energy57.640727
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
4/u)
Dep P Dep U
1 A' 3739 3523 110.33      
2 A' 3552 3346 80.26      
3 A' 2259 2129 86.46      
4 A' 1284 1210 112.87      
5 A' 1078 1016 74.09      
6 A' 577 543 48.38      
7 A' 344 324 10.59      
8 A" 516 486 33.56      
9 A" 338 318 25.15      

Unscaled Zero Point Vibrational Energy (zpe) 6843.1 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 6447.6 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
21.64651 0.31853 0.31391

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 0.124 0.000
C2 0.145 1.330 0.000
O3 -0.223 -1.182 0.000
H4 0.280 2.384 0.000
H5 0.633 -1.648 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.21461.32442.27821.8809
C21.21462.53821.06363.0168
O31.32442.53823.60170.9744
H42.27821.06363.60174.0474
H51.88093.01680.97444.0474

picture of ethynol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 179.538 C1 O3 H5 108.857
C2 C1 O3 177.163
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability