return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C3H3 (Propargyl radical)

using model chemistry: B3PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2B1
Energy calculated at B3PW91/6-31+G**
 hartrees
Energy at 0K-115.963260
Energy at 298.15K-115.964067
Nuclear repulsion energy53.217030
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 B3PW91/6-31+G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3482 3343 61.09      
2 A1 3171 3044 2.09      
3 A1 2018 1937 1.23      
4 A1 1458 1400 1.15      
5 A1 1100 1057 2.38      
6 B1 693 665 61.08      
7 B1 439 422 55.66      
8 B1 425 408 21.28      
9 B2 3267 3137 0.48      
10 B2 1029 987 0.37      
11 B2 614 589 70.34      
12 B2 363 349 6.39      

Unscaled Zero Point Vibrational Energy (zpe) 9028.7 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 8668.5 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 B3PW91/6-31+G**
ABC
9.63266 0.31682 0.30673

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.256
C2 0.000 0.000 0.113
C3 0.000 0.000 1.344
H4 0.000 0.932 -1.812
H5 0.000 -0.932 -1.812
H6 0.000 0.000 2.411

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6
C11.36922.60021.08531.08533.6669
C21.36921.23102.13932.13932.2977
C32.60021.23103.29143.29141.0667
H41.08532.13933.29141.86364.3250
H51.08532.13933.29141.86364.3250
H63.66692.29771.06674.32504.3250

picture of Propargyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 180.000 C2 C1 H4 120.848
C2 C1 H5 120.848 C2 C3 H6 180.000
H4 C1 H5 118.303
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.610      
2 C 0.252      
3 C -0.236      
4 H 0.179      
5 H 0.179      
6 H 0.236      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.097 0.097
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.368 0.000 0.000
y 0.000 -18.400 0.000
z 0.000 0.000 -12.591
Traceless
 xyz
x -4.873 0.000 0.000
y 0.000 -1.921 0.000
z 0.000 0.000 6.793
Polar
3z2-r213.587
x2-y2-1.968
xy0.000
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 45.195
(<r2>)1/2 6.723