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: B1B95/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/6-311G**
 hartrees
Energy at 0K-323.430315
Energy at 298.15K-323.436607
Nuclear repulsion energy273.628591
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 B1B95/6-311G**
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' 3215 3086 5.29      
2 A' 3176 3050 8.31      
3 A' 3090 2967 40.13      
4 A' 3018 2898 3.17      
5 A' 1809 1737 270.19      
6 A' 1741 1671 101.98      
7 A' 1691 1623 47.54      
8 A' 1424 1368 0.25      
9 A' 1410 1354 51.24      
10 A' 1406 1350 43.59      
11 A' 1370 1316 4.01      
12 A' 1228 1179 60.79      
13 A' 1142 1096 30.07      
14 A' 1004 964 3.30      
15 A' 955 917 17.02      
16 A' 902 866 7.29      
17 A' 787 756 8.26      
18 A' 589 566 0.24      
19 A' 544 523 2.31      
20 A' 467 449 3.43      
21 A" 3038 2917 3.04      
22 A" 1198 1150 0.00      
23 A" 1032 991 2.70      
24 A" 998 958 9.27      
25 A" 874 839 24.17      
26 A" 796 764 16.79      
27 A" 601 577 7.14      
28 A" 368 354 1.40      
29 A" 299 287 3.67      
30 A" 53 51 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 20112.1 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 19309.6 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 B1B95/6-311G**
ABC
0.18101 0.09399 0.06256

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.254 0.399 0.000
C2 0.000 1.079 0.000
C3 1.241 0.283 0.000
C4 1.220 -1.049 0.000
C5 -0.070 -1.780 0.000
C6 -1.254 -0.872 0.000
O7 0.021 2.285 0.000
H8 2.163 0.850 0.000
H9 2.139 -1.624 0.000
H10 -0.142 -2.451 0.866
H11 -2.231 -1.361 0.000
H12 -0.142 -2.451 -0.866

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12
N11.42602.49752.86592.47991.27132.27553.44613.95033.17972.01323.1797
C21.42601.47462.45252.85962.31921.20582.17493.44723.63773.30603.6377
C32.49751.47461.33162.44382.74942.34471.08242.10773.18403.84143.1840
C42.86592.45251.33161.48212.47983.54242.12031.08482.13813.46462.1381
C52.47992.85962.44381.48211.49214.06543.44982.21431.09822.20151.0982
C61.27132.31922.74942.47981.49213.40423.82633.47542.11661.09242.1166
O72.27551.20582.34473.54244.06543.40422.57814.44604.81714.28464.8171
H83.44612.17491.08242.12033.44983.82632.57812.47454.11864.91874.1186
H93.95033.44722.10771.08482.21433.47544.44602.47452.57654.37802.5765
H103.17973.63773.18402.13811.09822.11664.81714.11862.57652.51051.7319
H112.01323.30603.84143.46462.20151.09244.28464.91874.37802.51052.5105
H123.17973.63773.18402.13811.09822.11664.81714.11862.57651.73192.5105

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 118.851 N1 C2 O7 119.444
N1 C6 C5 127.457 N1 C6 H11 116.586
C2 N1 C6 118.481 C2 C3 C4 121.754
C2 C3 H8 115.694 C3 C2 O7 121.706
C3 C4 C5 120.482 C3 C4 H9 121.110
C4 C3 H8 122.552 C4 C5 C6 112.975
C4 C5 H10 111.037 C4 C5 H12 111.037
C5 C4 H9 118.408 C5 C6 H11 115.957
C6 C5 H10 108.641 C6 C5 H12 108.641
H10 C5 H12 104.096
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.290      
2 C 0.331      
3 C -0.195      
4 C -0.071      
5 C -0.282      
6 C 0.054      
7 O -0.292      
8 H 0.133      
9 H 0.133      
10 H 0.171      
11 H 0.138      
12 H 0.171      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.451 -5.531 0.000 5.718
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.757 2.911 0.000
y 2.911 -42.900 0.000
z 0.000 0.000 -40.011
Traceless
 xyz
x 2.698 2.911 0.000
y 2.911 -3.516 0.000
z 0.000 0.000 0.818
Polar
3z2-r21.636
x2-y24.143
xy2.911
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.450 0.421 0.000
y 0.421 12.848 0.000
z 0.000 0.000 4.807


<r2> (average value of r2) Å2
<r2> 177.470
(<r2>)1/2 13.322