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All results from a given calculation for HCCOH (ethynol)

using model chemistry: MP2=FULL/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-152.313143
Energy at 298.15K-152.313887
HF Energy-151.727159
Nuclear repulsion energy58.186462
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/cc-pVTZ
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' 3837 3643 137.46      
2 A' 3539 3360 92.80      
3 A' 2249 2135 126.47      
4 A' 1263 1199 88.42      
5 A' 1084 1029 84.64      
6 A' 611 580 48.57      
7 A' 391 371 10.04      
8 A" 544 516 52.52      
9 A" 418 397 7.77      

Unscaled Zero Point Vibrational Energy (zpe) 6967.6 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 6615.0 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/cc-pVTZ
ABC
22.20035 0.32445 0.31978

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.121 0.000
C2 0.094 1.322 0.000
O3 -0.178 -1.178 0.000
H4 0.183 2.372 0.000
H5 0.682 -1.609 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.20531.31082.25881.8598
C21.20532.51501.05362.9902
O31.31082.51503.56830.9630
H42.25881.05363.56834.0127
H51.85982.99020.96304.0127

picture of ethynol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 179.602 C1 O3 H5 108.799
C2 C1 O3 176.635
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability