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

using model chemistry: QCISD(T)/aug-cc-pVDZ

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 QCISD(T)/aug-cc-pVDZ
Rotational Constants (cm-1) from geometry optimized at QCISD(T)/aug-cc-pVDZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/aug-cc-pVDZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at QCISD(T)/aug-cc-pVDZ
 hartrees
Energy at 0K-115.634559
Energy at 298.15K-115.636165
HF Energy-115.204558
Nuclear repulsion energy57.018521
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 QCISD(T)/aug-cc-pVDZ
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' 3289 3216        
2 A' 3074 3006        
3 A' 1654 1618        
4 A' 1206 1179        
5 A' 977 955        
6 A' 911 891        
7 A' 545 533        
8 A" 3253 3181        
9 A" 1086 1062        
10 A" 988 966        
11 A" 895 875        
12 A" 789 771        

Unscaled Zero Point Vibrational Energy (zpe) 9333.5 cm-1
Scaled (by 0.9778) Zero Point Vibrational Energy (zpe) 9126.3 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 QCISD(T)/aug-cc-pVDZ
ABC
1.02621 0.86166 0.48225

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.037 0.903 0.000
H2 0.754 1.673 0.000
C3 -0.037 -0.425 0.670
C4 -0.037 -0.425 -0.670
H5 -0.044 -0.997 1.598
H6 -0.044 -0.997 -1.598

Atom - Atom Distances (Å)
  C1 H2 C3 C4 H5 H6
C11.10331.48761.48762.48302.4830
H21.10332.33962.33963.21203.2120
C31.48762.33961.33951.09022.3385
C41.48762.33961.33952.33851.0902
H52.48303.21201.09022.33853.1952
H62.48303.21202.33851.09023.1952

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 63.244 C1 C3 H5 148.425
C1 C4 C3 63.244 C1 C4 H6 148.425
H2 C1 C3 128.495 H2 C1 C4 128.495
C3 C1 C4 53.513 C3 C4 H6 148.328
C4 C3 H5 148.328
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability