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

using model chemistry: TPSSh/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes CS 2A'

Conformer 1 (D3H)

Jump to S1C2
Vibrational Frequencies calculated at TPSSh/3-21G*
Rotational Constants (cm-1) from geometry optimized at TPSSh/3-21G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/3-21G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at TPSSh/3-21G*
 hartrees
Energy at 0K-115.307054
Energy at 298.15K-115.308666
HF Energy-115.307054
Nuclear repulsion energy57.284207
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 TPSSh/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' 3330 3216 0.09      
2 A' 3089 2983 49.98      
3 A' 1613 1558 0.35      
4 A' 1178 1137 15.33      
5 A' 1000 966 11.57      
6 A' 934 902 4.88      
7 A' 669 646 101.39      
8 A" 3281 3168 0.64      
9 A" 1063 1027 21.69      
10 A" 995 961 13.44      
11 A" 905 874 0.32      
12 A" 654 632 27.30      

Unscaled Zero Point Vibrational Energy (zpe) 9355.1 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 9034.2 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 TPSSh/3-21G*
ABC
1.05128 0.85462 0.48593

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.038 0.911 0.000
H2 0.763 1.652 0.000
C3 -0.038 -0.427 0.662
C4 -0.038 -0.427 -0.662
H5 -0.042 -0.996 1.572
H6 -0.042 -0.996 -1.572

Atom - Atom Distances (Å)
  C1 H2 C3 C4 H5 H6
C11.09091.49341.49342.47192.4719
H21.09092.32432.32433.18303.1830
C31.49342.32431.32401.07342.3055
C41.49342.32431.32402.30551.0734
H52.47193.18301.07342.30553.1445
H62.47193.18302.30551.07343.1445

picture of cyclopropenyl radical state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C4 63.685 C1 C3 H5 148.319
C1 C4 C3 63.685 C1 C4 H6 148.319
H2 C1 C3 127.467 H2 C1 C4 127.467
C3 C1 C4 52.629 C3 C4 H6 147.994
C4 C3 H5 147.994
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.159      
2 H 0.189      
3 C -0.231      
4 C -0.231      
5 H 0.215      
6 H 0.215      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.738 -1.264 0.000 1.464
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.839 0.323 0.000
y 0.323 4.355 0.000
z 0.000 0.000 4.454


<r2> (average value of r2) Å2
<r2> 33.744
(<r2>)1/2 5.809