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: MP4/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A2
Energy calculated at MP4/cc-pVDZ
 hartrees
Energy at 0K-208.929114
Energy at 298.15K 
HF Energy-208.212685
Nuclear repulsion energy149.768844
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 MP4/cc-pVDZ
Rotational Constants (cm-1) from geometry optimized at MP4/cc-pVDZ
ABC
0.32893 0.28896 0.15383

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.258
C2 0.000 1.064 0.428
C3 0.000 -1.064 0.428
C4 0.000 0.692 -0.992
C5 0.000 -0.692 -0.992
H6 0.000 2.086 0.827
H7 0.000 -2.086 0.827
H8 0.000 1.375 -1.845
H9 0.000 -1.375 -1.845

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 H6 H7 H8 H9
N11.34981.34982.35402.35402.12972.12973.39473.3947
C21.34982.12801.46722.25801.09673.17472.29423.3341
C31.34982.12802.25801.46723.17471.09673.33412.2942
C42.35401.46722.25801.38452.29073.31991.09332.2368
C52.35402.25801.46721.38453.31992.29072.23681.0933
H62.12971.09673.17472.29073.31994.17102.76474.3722
H72.12973.17471.09673.31992.29074.17104.37222.7647
H83.39472.29423.33411.09332.23682.76474.37222.7505
H93.39473.33412.29422.23681.09334.37222.76472.7505

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 113.300 N1 C2 H6 120.687
N1 C3 C5 113.300 N1 C3 H7 120.687
C2 N1 C3 104.044 C2 C4 C5 104.678
C2 C4 H8 126.658 C3 C5 C4 104.678
C3 C5 H9 126.658 C4 C2 H6 126.013
C4 C5 H9 128.664 C5 C3 H7 126.013
C5 C4 H8 128.664
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability