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: B3PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2B1
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-115.977782
Energy at 298.15K-115.978499
Nuclear repulsion energy53.407131
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 B3PW91/6-311G*
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 3466 3336 45.29      
2 A1 3151 3033 4.31      
3 A1 2012 1937 3.38      
4 A1 1461 1406 1.31      
5 A1 1096 1055 2.47      
6 B1 666 642 51.33      
7 B1 423 407 56.60      
8 B1 380 366 4.42      
9 B2 3243 3122 2.39      
10 B2 1034 996 0.22      
11 B2 604 582 55.43      
12 B2 348 335 5.12      

Unscaled Zero Point Vibrational Energy (zpe) 8941.9 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 8608.3 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 B3PW91/6-311G*
ABC
9.66954 0.31922 0.30902

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.251
C2 0.000 0.000 0.115
C3 0.000 0.000 1.338
H4 0.000 0.930 -1.809
H5 0.000 -0.930 -1.809
H6 0.000 0.000 2.403

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6
C11.36602.58931.08451.08453.6540
C21.36601.22332.13682.13682.2880
C32.58931.22333.28173.28171.0647
H41.08452.13683.28171.86004.3133
H51.08452.13683.28171.86004.3133
H63.65402.28801.06474.31334.3133

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 120.954
C2 C1 H5 120.954 C2 C3 H6 180.000
H4 C1 H5 118.092
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.537      
2 C 0.058      
3 C -0.265      
4 H 0.245      
5 H 0.245      
6 H 0.254      


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 -0.078 0.078
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.088 0.000 0.000
y 0.000 -18.178 0.000
z 0.000 0.000 -12.271
Traceless
 xyz
x -4.863 0.000 0.000
y 0.000 -1.998 0.000
z 0.000 0.000 6.862
Polar
3z2-r213.724
x2-y2-1.910
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> 44.785
(<r2>)1/2 6.692