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All results from a given calculation for HCCOH (ethynol)

using model chemistry: LSDA/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at LSDA/3-21G*
 hartrees
Energy at 0K-150.881066
Energy at 298.15K-150.882089
Nuclear repulsion energy57.764065
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 LSDA/3-21G*
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' 3450 3388 90.87      
2 A' 3379 3318 44.88      
3 A' 2301 2260 79.75      
4 A' 1216 1194 63.61      
5 A' 1077 1057 157.93      
6 A' 753 739 48.86      
7 A' 472 464 31.68      
8 A" 666 654 78.33      
9 A" 522 513 5.92      

Unscaled Zero Point Vibrational Energy (zpe) 6917.8 cm-1
Scaled (by 0.982) Zero Point Vibrational Energy (zpe) 6793.3 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 LSDA/3-21G*
ABC
21.66093 0.32131 0.31662

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.124 0.000
C2 0.237 1.310 0.000
O3 -0.296 -1.153 0.000
H4 0.432 2.362 0.000
H5 0.514 -1.746 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.20951.31102.27891.9399
C21.20952.52021.06953.0692
O31.31102.52023.58941.0036
H42.27891.06953.58944.1091
H51.93993.06921.00364.1091

picture of ethynol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 179.221 C1 O3 H5 113.209
C2 C1 O3 178.250
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.050      
2 C -0.087      
3 O -0.608      
4 H 0.249      
5 H 0.397      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.720 -1.331 0.000 2.175
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.552 -2.355 0.000
y -2.355 -10.981 0.000
z 0.000 0.000 -18.315
Traceless
 xyz
x -2.904 -2.355 0.000
y -2.355 6.953 0.000
z 0.000 0.000 -4.049
Polar
3z2-r2-8.097
x2-y2-6.571
xy-2.355
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.388 0.422 0.000
y 0.422 5.344 0.000
z 0.000 0.000 0.962


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000