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: B2PLYP/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2B1
Energy calculated at B2PLYP/cc-pVTZ
 hartrees
Energy at 0K-115.936053
Energy at 298.15K-115.936906
HF Energy-115.789516
Nuclear repulsion energy53.453290
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 B2PLYP/cc-pVTZ
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 3484 3343 59.17      
2 A1 3174 3046 2.24      
3 A1 2041 1958 2.90      
4 A1 1474 1414 0.54      
5 A1 1074 1030 3.09      
6 B1 676 648 41.19      
7 B1 511 490 50.92      
8 B1 406 390 7.81      
9 B2 3272 3139 0.39      
10 B2 1043 1001 1.20      
11 B2 639 613 48.69      
12 B2 349 335 5.75      

Unscaled Zero Point Vibrational Energy (zpe) 9071.0 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 8702.8 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 B2PLYP/cc-pVTZ
ABC
9.71002 0.31923 0.30907

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.255
C2 0.000 0.000 0.119
C3 0.000 0.000 1.337
H4 0.000 0.928 -1.804
H5 0.000 -0.928 -1.804
H6 0.000 0.000 2.397

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6
C11.37352.59201.07851.07853.6521
C21.37351.21852.13482.13482.2786
C32.59201.21853.27523.27521.0601
H41.07852.13483.27521.85674.3023
H51.07852.13483.27521.85674.3023
H63.65212.27861.06014.30234.3023

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 120.595
C2 C1 H5 120.595 C2 C3 H6 180.000
H4 C1 H5 118.811
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability