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All results from a given calculation for HCCOH (ethynol)

using model chemistry: BLYP/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 BLYP/3-21G*
 hartrees
Energy at 0K-151.656385
Energy at 298.15K-151.657367
Nuclear repulsion energy57.132216
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 BLYP/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' 3448 3425 70.71      
2 A' 3261 3240 10.59      
3 A' 2237 2223 65.51      
4 A' 1246 1238 84.35      
5 A' 1013 1006 91.33      
6 A' 751 746 42.00      
7 A' 459 456 24.54      
8 A" 646 642 72.24      
9 A" 506 503 2.41      

Unscaled Zero Point Vibrational Energy (zpe) 6783.2 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 6739.1 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 BLYP/3-21G*
ABC
20.64912 0.31412 0.30941

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.133 0.000
C2 0.216 1.327 0.000
O3 -0.281 -1.177 0.000
H4 0.385 2.380 0.000
H5 0.565 -1.729 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.21411.33922.27951.9459
C21.21412.55291.06553.0764
O31.33922.55293.61791.0107
H42.27951.06553.61794.1126
H51.94593.07641.01074.1126

picture of ethynol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 178.838 C1 O3 H5 111.030
C2 C1 O3 178.151
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.066      
2 C -0.049      
3 O -0.588      
4 H 0.208      
5 H 0.363      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.661 -1.072 0.000 1.977
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.379 -2.383 0.000
y -2.383 -11.594 0.000
z 0.000 0.000 -18.242
Traceless
 xyz
x -2.461 -2.383 0.000
y -2.383 6.217 0.000
z 0.000 0.000 -3.756
Polar
3z2-r2-7.511
x2-y2-5.785
xy-2.383
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.426 0.326 0.000
y 0.326 5.427 0.000
z 0.000 0.000 0.961


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