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/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-323.377415
Energy at 298.15K-323.383728
Nuclear repulsion energy272.955365
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/cc-pVDZ
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' 3228 3102 4.50      
2 A' 3188 3065 7.07      
3 A' 3095 2975 37.67      
4 A' 3025 2907 3.10      
5 A' 1820 1749 266.48      
6 A' 1751 1683 87.20      
7 A' 1703 1637 48.47      
8 A' 1416 1361 16.06      
9 A' 1408 1353 44.97      
10 A' 1380 1326 38.27      
11 A' 1364 1311 0.54      
12 A' 1226 1179 59.82      
13 A' 1134 1090 19.73      
14 A' 1006 967 3.13      
15 A' 953 916 16.03      
16 A' 909 874 7.51      
17 A' 793 763 6.40      
18 A' 588 566 0.38      
19 A' 543 522 2.21      
20 A' 465 447 3.16      
21 A" 3050 2932 1.98      
22 A" 1187 1141 0.00      
23 A" 1028 988 0.99      
24 A" 994 956 8.64      
25 A" 875 841 20.66      
26 A" 795 764 12.28      
27 A" 599 576 6.23      
28 A" 369 355 1.14      
29 A" 305 293 3.92      
30 A" 64 61 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 20129.6 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 19348.6 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/cc-pVDZ
ABC
0.18034 0.09357 0.06230

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.257 0.403 0.000
C2 0.000 1.079 0.000
C3 1.243 0.283 0.000
C4 1.221 -1.054 0.000
C5 -0.070 -1.782 0.000
C6 -1.254 -0.873 0.000
O7 0.021 2.290 0.000
H8 2.171 0.855 0.000
H9 2.147 -1.633 0.000
H10 -0.145 -2.460 0.870
H11 -2.238 -1.366 0.000
H12 -0.145 -2.460 -0.870

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12
N11.42702.50292.87472.48661.27622.27823.45783.96693.19232.02333.1923
C21.42701.47612.45772.86202.32011.21082.18293.45963.64733.31473.6473
C32.50291.47611.33722.44772.75192.34951.09002.11943.19533.85203.1953
C42.87472.45771.33721.48292.48193.55242.13201.09252.14523.47312.1452
C52.48662.86202.44771.48291.49244.07273.46112.22251.10552.20681.1055
C61.27622.32012.75192.48191.49243.40983.83653.48522.12251.10052.1225
O72.27821.21082.34953.55244.07273.40982.58544.46264.83154.29734.8315
H83.45782.18291.09002.13203.46113.83652.58542.48864.13664.93704.1366
H93.96693.45962.11941.09252.22253.48524.46262.48862.58744.39302.5874
H103.19233.64733.19532.14521.10552.12254.83154.13662.58742.51621.7400
H112.02333.31473.85203.47312.20681.10054.29734.93704.39302.51622.5162
H123.19233.64733.19532.14521.10552.12254.83154.13662.58741.74002.5162

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 119.112 N1 C2 O7 119.240
N1 C6 C5 127.654 N1 C6 H11 116.511
C2 N1 C6 118.139 C2 C3 C4 121.682
C2 C3 H8 115.752 C3 C2 O7 121.648
C3 C4 C5 120.358 C3 C4 H9 121.120
C4 C3 H8 122.567 C4 C5 C6 113.056
C4 C5 H10 111.110 C4 C5 H12 111.110
C5 C4 H9 118.522 C5 C6 H11 115.835
C6 C5 H10 108.656 C6 C5 H12 108.656
H10 C5 H12 103.809
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.190      
2 C 0.175      
3 C -0.022      
4 C -0.016      
5 C -0.015      
6 C 0.054      
7 O -0.201      
8 H 0.010      
9 H 0.014      
10 H 0.079      
11 H 0.032      
12 H 0.079      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.364 -5.331 0.000 5.502
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.633 2.740 0.000
y 2.740 -42.376 0.000
z 0.000 0.000 -39.728
Traceless
 xyz
x 2.418 2.740 0.000
y 2.740 -3.195 0.000
z 0.000 0.000 0.777
Polar
3z2-r21.553
x2-y23.742
xy2.740
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.430 0.464 0.000
y 0.464 12.674 0.000
z 0.000 0.000 4.490


<r2> (average value of r2) Å2
<r2> 177.977
(<r2>)1/2 13.341