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

using model chemistry: MP2/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-18.290745
Energy at 298.15K-18.291911
HF Energy-18.069843
Nuclear repulsion energy27.228462
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/CEP-121G
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 3488 3404 52.90      
2 A1 3146 3071 9.02      
3 A1 2299 2243 0.34      
4 A1 1497 1461 0.02      
5 A1 1021 996 9.75      
6 B1 705 688 97.33      
7 B1 586 572 62.33      
8 B1 448 438 23.87      
9 B2 3277 3199 5.17      
10 B2 1110 1084 0.03      
11 B2 940 918 87.65      
12 B2 446 436 16.27      

Unscaled Zero Point Vibrational Energy (zpe) 9482.4 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 9254.8 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/CEP-121G
ABC
9.47422 0.30794 0.29824

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.259
C2 0.000 0.000 0.170
C3 0.000 0.000 1.381
H4 0.000 0.940 -1.808
H5 0.000 -0.940 -1.808
H6 0.000 0.000 2.448

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6
C11.42902.63991.08841.08843.7069
C21.42901.21092.19032.19032.2779
C32.63991.21093.32493.32491.0670
H41.08842.19033.32491.87914.3588
H51.08842.19033.32491.87914.3588
H63.70692.27791.06704.35884.3588

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 120.320
C2 C1 H5 120.320 C2 C3 H6 180.000
H4 C1 H5 119.360
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability