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 C5H5NO (4(1H)-Pryidinone)

using model chemistry: MP2/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A'
Energy calculated at MP2/6-31+G**
 hartrees
Energy at 0K-322.576015
Energy at 298.15K 
HF Energy-321.568525
Nuclear repulsion energy273.046021
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 MP2/6-31+G**
Rotational Constants (cm-1) from geometry optimized at MP2/6-31+G**
ABC
0.19083 0.08933 0.06085

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.738 0.000 0.000
C2 -1.055 1.191 0.000
C3 0.308 1.227 0.000
C4 1.117 0.000 0.000
C5 0.308 -1.227 0.000
C6 -1.055 -1.191 0.000
O7 2.357 0.000 0.000
H8 -1.669 2.083 0.000
H9 0.827 2.176 0.000
H10 0.827 -2.176 0.000
H11 -1.669 -2.083 0.000
H12 -2.745 0.000 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12
N11.37322.38592.85452.38591.37324.09472.08373.36383.36382.08371.0074
C21.37321.36332.47662.77612.38243.61361.08282.12413.85753.33102.0681
C32.38591.36331.46982.45482.77612.38832.15451.08143.44283.85573.2908
C42.85452.47661.46981.46982.47661.24023.47842.19522.19523.47843.8619
C52.38592.77612.45481.46981.36332.38833.85573.44281.08142.15453.2908
C61.37322.38242.77612.47661.36333.61363.33103.85752.12411.08282.0681
O74.09473.61362.38831.24022.38833.61364.53302.65982.65984.53305.1021
H82.08371.08282.15453.47843.85573.33104.53302.49844.93654.16522.3441
H93.36382.12411.08142.19523.44283.85752.65982.49844.35214.93654.1831
H103.36383.85753.44282.19521.08142.12412.65984.93654.35212.49844.1831
H112.08373.33103.85573.47842.15451.08284.53304.16524.93652.49842.3441
H121.00742.06813.29083.86193.29082.06815.10212.34414.18314.18312.3441

picture of 4(1H)-Pryidinone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 121.355 N1 C2 H8 115.575
N1 C6 C5 121.355 N1 C6 H11 115.575
C2 N1 C6 120.331 C2 N1 H12 119.834
C2 C3 C4 121.854 C2 C3 H9 120.213
C3 C2 H8 123.070 C3 C4 C5 113.251
C3 C4 O7 123.374 C4 C3 H9 117.934
C4 C5 C6 121.854 C4 C5 H10 117.934
C5 C4 O7 123.374 C5 C6 H11 123.070
C6 N1 H12 119.834 C6 C5 H10 120.213
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability