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All results from a given calculation for HCCOH (ethynol)

using model chemistry: B1B95/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/cc-pVDZ
 hartrees
Energy at 0K-152.494160
Energy at 298.15K-152.494960
Nuclear repulsion energy58.088015
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 B1B95/cc-pVDZ
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' 3782 3635 115.92      
2 A' 3521 3385 96.22      
3 A' 2312 2222 131.03      
4 A' 1260 1211 87.72      
5 A' 1109 1066 90.56      
6 A' 654 629 40.46      
7 A' 400 384 11.76      
8 A" 551 530 49.64      
9 A" 441 423 8.26      

Unscaled Zero Point Vibrational Energy (zpe) 7014.5 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 6742.3 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 B1B95/cc-pVDZ
ABC
21.83626 0.32383 0.31910

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.118 0.000
C2 0.163 1.316 0.000
O3 -0.237 -1.168 0.000
H4 0.306 2.376 0.000
H5 0.610 -1.639 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.20891.30812.27781.8598
C21.20892.51631.06892.9885
O31.30812.51633.58490.9686
H42.27781.06893.58494.0256
H51.85982.98850.96864.0256

picture of ethynol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 179.954 C1 O3 H5 108.641
C2 C1 O3 177.320
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.014      
2 C -0.048      
3 O -0.150      
4 H 0.003      
5 H 0.181      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.473 -1.008 0.000 1.785
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.119 -2.175 0.000
y -2.175 -11.632 0.000
z 0.000 0.000 -18.287
Traceless
 xyz
x -2.160 -2.175 0.000
y -2.175 6.071 0.000
z 0.000 0.000 -3.911
Polar
3z2-r2-7.822
x2-y2-5.488
xy-2.175
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.920 0.253 0.000
y 0.253 5.487 0.000
z 0.000 0.000 1.670


<r2> (average value of r2) Å2
<r2> 40.589
(<r2>)1/2 6.371