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: MP2=FULL/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 MP2=FULL/6-311G**
 hartrees
Energy at 0K-115.704616
Energy at 298.15K-115.705711
HF Energy-115.279806
Nuclear repulsion energy53.510939
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 MP2=FULL/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 3563 3380 65.48      
2 A1 3235 3069 1.69      
3 A1 2375 2253 4.29      
4 A1 1483 1407 0.03      
5 A1 1057 1003 10.07      
6 B1 754 715 41.84      
7 B1 582 552 41.31      
8 B1 435 412 20.77      
9 B2 3350 3178 0.06      
10 B2 1071 1016 0.93      
11 B2 840 797 46.31      
12 B2 401 380 9.43      

Unscaled Zero Point Vibrational Energy (zpe) 9572.4 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 9080.4 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 MP2=FULL/6-311G**
ABC
9.60942 0.31935 0.30908

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.260
C2 0.000 0.000 0.133
C3 0.000 0.000 1.330
H4 0.000 0.933 -1.805
H5 0.000 -0.933 -1.805
H6 0.000 0.000 2.392

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6
C11.39302.59011.08031.08033.6523
C21.39301.19712.15062.15062.2593
C32.59011.19713.27073.27071.0623
H41.08032.15063.27071.86584.2995
H51.08032.15063.27071.86584.2995
H63.65232.25931.06234.29954.2995

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 120.280
C2 C1 H5 120.280 C2 C3 H6 180.000
H4 C1 H5 119.439
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability