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 (2(5H)-Pyridinone)

using model chemistry: B2PLYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP/6-31G*
 hartrees
Energy at 0K-323.146794
Energy at 298.15K-323.153082
HF Energy-322.825580
Nuclear repulsion energy271.848724
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/6-31G*
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' 3248 3083 5.59      
2 A' 3212 3048 8.95      
3 A' 3144 2984 39.60      
4 A' 3045 2890 4.92      
5 A' 1780 1689 225.56      
6 A' 1726 1638 39.56      
7 A' 1676 1591 60.73      
8 A' 1481 1406 16.66      
9 A' 1446 1372 16.45      
10 A' 1432 1359 37.59      
11 A' 1399 1328 7.92      
12 A' 1251 1188 57.46      
13 A' 1162 1103 35.10      
14 A' 1016 964 1.89      
15 A' 965 916 17.73      
16 A' 902 856 5.42      
17 A' 782 742 8.24      
18 A' 594 564 0.23      
19 A' 545 517 1.92      
20 A' 471 447 3.60      
21 A" 3067 2911 4.66      
22 A" 1223 1161 0.01      
23 A" 1038 986 5.01      
24 A" 1000 949 2.27      
25 A" 871 827 20.24      
26 A" 800 760 22.47      
27 A" 609 578 3.79      
28 A" 370 351 1.60      
29 A" 298 283 3.19      
30 A" 64 60 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 20307.6 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 19276.0 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/6-31G*
ABC
0.17897 0.09267 0.06174

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.257 0.401 0.000
C2 0.000 1.092 0.000
C3 1.250 0.284 0.000
C4 1.225 -1.057 0.000
C5 -0.073 -1.800 0.000
C6 -1.264 -0.879 0.000
O7 0.022 2.306 0.000
H8 2.173 0.854 0.000
H9 2.144 -1.639 0.000
H10 -0.142 -2.467 0.871
H11 -2.241 -1.372 0.000
H12 -0.142 -2.467 -0.871

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12
N11.43422.50902.87872.49941.28012.29493.45913.96563.19772.02823.1977
C21.43421.48812.47392.89302.34171.21462.18563.47193.66673.33103.6667
C32.50901.48811.34122.46802.76992.36571.08472.12073.20363.86383.2036
C42.87872.47391.34121.49552.49603.57222.13261.08732.14873.48092.1487
C52.49942.89302.46801.49551.50624.10753.47602.22231.09932.21051.0993
C61.28012.34172.76992.49601.50623.43553.84903.49192.13051.09442.1305
O72.29491.21462.36573.57224.10753.43552.59504.47964.85494.31934.8549
H83.45912.18561.08472.13263.47603.84902.59502.49274.14054.94334.1405
H93.96563.47192.12071.08732.22233.49194.47962.49272.58294.39332.5829
H103.19773.66673.20362.14871.09932.13054.85494.14052.58292.52241.7422
H112.02823.33103.86383.48092.21051.09444.31934.94334.39332.52242.5224
H123.19773.66673.20362.14871.09932.13054.85494.14052.58291.74222.5224

picture of 2(5H)-Pyridinone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 118.305 N1 C2 O7 119.856
N1 C6 C5 127.356 N1 C6 H11 117.125
C2 N1 C6 119.143 C2 C3 C4 121.857
C2 C3 H8 115.426 C3 C2 O7 121.839
C3 C4 C5 120.822 C3 C4 H9 121.317
C4 C3 H8 122.717 C4 C5 C6 112.516
C4 C5 H10 110.886 C4 C5 H12 110.886
C5 C4 H9 117.860 C5 C6 H11 115.519
C6 C5 H10 108.703 C6 C5 H12 108.703
H10 C5 H12 104.829
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.451      
2 C 0.599      
3 C -0.197      
4 C -0.121      
5 C -0.397      
6 C 0.097      
7 O -0.491      
8 H 0.191      
9 H 0.183      
10 H 0.203      
11 H 0.182      
12 H 0.203      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.982 0.401 0.000
y 0.401 12.397 0.000
z 0.000 0.000 4.175


<r2> (average value of r2) Å2
<r2> 179.553
(<r2>)1/2 13.400