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 C4H4N (pyrrolide radical)

using model chemistry: CCSD(T)/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A2
Energy calculated at CCSD(T)/aug-cc-pVTZ
 hartrees
Energy at 0K-209.146360
Energy at 298.15K 
HF Energy-208.269234
Nuclear repulsion energy150.642611
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 CCSD(T)/aug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at CCSD(T)/aug-cc-pVTZ
ABC
0.33177 0.29292 0.15557

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.250
C2 0.000 1.066 0.425
C3 0.000 -1.066 0.425
C4 0.000 0.682 -0.985
C5 0.000 -0.682 -0.985
H6 0.000 2.073 0.820
H7 0.000 -2.073 0.820
H8 0.000 1.354 -1.830
H9 0.000 -1.354 -1.830

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 H6 H7 H8 H9
N11.34801.34802.33702.33702.11742.11743.36453.3645
C21.34802.13211.46132.24621.08213.16422.27343.3077
C31.34802.13212.24621.46133.16421.08213.30772.2734
C42.33701.46132.24621.36482.27913.29451.07922.2045
C52.33702.24621.46131.36483.29452.27912.20451.0792
H62.11741.08213.16422.27913.29454.14682.74644.3325
H72.11743.16421.08213.29452.27914.14684.33252.7464
H83.36452.27343.30771.07922.20452.74644.33252.7075
H93.36453.30772.27342.20451.07924.33252.74642.7075

picture of pyrrolide radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C4 112.516 N1 C2 H6 120.834
N1 C3 C5 112.516 N1 C3 H7 120.834
C2 N1 C3 104.527 C2 C4 C5 105.221
C2 C4 H8 126.313 C3 C5 C4 105.221
C3 C5 H9 126.313 C4 C2 H6 126.651
C4 C5 H9 128.466 C5 C3 H7 126.651
C5 C4 H8 128.466
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability