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(1H)-Pyridinone)

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-320.429064
Energy at 298.15K-320.435771
HF Energy-319.763741
Nuclear repulsion energy271.759072
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 MP2/3-21G
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' 3530 3369 58.64      
2 A' 3253 3105 3.47      
3 A' 3240 3092 4.10      
4 A' 3222 3076 3.89      
5 A' 3198 3052 8.78      
6 A' 1730 1651 265.91      
7 A' 1647 1572 43.48      
8 A' 1557 1486 19.86      
9 A' 1502 1433 2.72      
10 A' 1460 1394 7.75      
11 A' 1433 1367 1.88      
12 A' 1280 1221 18.02      
13 A' 1262 1204 1.33      
14 A' 1171 1117 34.10      
15 A' 1095 1045 28.04      
16 A' 1025 978 13.71      
17 A' 989 944 0.56      
18 A' 793 757 11.24      
19 A' 624 595 0.96      
20 A' 552 526 3.24      
21 A' 448 427 5.75      
22 A" 983 939 0.22      
23 A" 926 884 0.01      
24 A" 861 822 33.95      
25 A" 786 750 116.59      
26 A" 759 724 7.33      
27 A" 713 680 40.08      
28 A" 502 479 53.73      
29 A" 393 375 1.49      
30 A" 177 169 1.82      

Unscaled Zero Point Vibrational Energy (zpe) 20552.6 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 19617.4 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 MP2/3-21G
ABC
0.18589 0.08998 0.06063

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.154 0.236 0.000
C2 0.000 1.083 0.000
C3 1.249 0.314 0.000
C4 1.277 -1.056 0.000
C5 0.058 -1.825 0.000
C6 -1.133 -1.149 0.000
O7 -0.119 2.331 0.000
H8 2.161 0.900 0.000
H9 2.231 -1.577 0.000
H10 0.074 -2.908 0.000
H11 -2.097 -1.647 0.000
H12 -2.044 0.733 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12
N11.43132.40432.75312.39141.38552.33633.38103.84013.37572.10631.0191
C21.43131.46702.49142.90882.50311.25372.16913.47203.99193.44242.0735
C32.40431.46701.37032.44822.79532.43761.08432.13083.42953.87803.3194
C42.75312.49141.37031.44122.41153.66382.14671.08702.20833.42483.7721
C52.39142.90882.44821.44121.36944.16003.44232.18701.08312.16183.3110
C61.38552.50312.79532.41151.36943.62473.87943.39092.13331.08492.0911
O72.33631.25372.43763.66384.16003.62472.69264.56065.24274.44262.5013
H83.38102.16911.08432.14673.44233.87942.69262.47814.34254.96164.2084
H93.84013.47202.13081.08702.18703.39094.56062.47812.53444.32804.8591
H103.37573.99193.42952.20831.08312.13335.24274.34252.53442.51014.2124
H112.10633.44243.87803.42482.16181.08494.44264.96164.32802.51012.3811
H121.01912.07353.31943.77213.31102.09112.50134.20844.85914.21242.3811

picture of 2(1H)-Pyridinone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 112.103 N1 C2 O7 120.806
N1 C6 C5 120.460 N1 C6 H11 116.470
C2 N1 C6 125.397 C2 N1 H12 114.553
C2 C3 C4 122.791 C2 C3 H8 115.658
C3 C2 O7 127.091 C3 C4 C5 121.082
C3 C4 H9 119.808 C4 C3 H8 121.551
C4 C5 C6 118.167 C4 C5 H10 121.398
C5 C4 H9 119.110 C5 C6 H11 123.071
C6 N1 H12 120.050 C6 C5 H10 120.435
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.958      
2 C 0.852      
3 C -0.365      
4 C -0.155      
5 C -0.381      
6 C 0.217      
7 O -0.653      
8 H 0.268      
9 H 0.263      
10 H 0.250      
11 H 0.279      
12 H 0.384      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.255 -4.688 0.000 4.853
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.605 0.238 0.000
y 0.238 -48.034 0.000
z 0.000 0.000 -44.171
Traceless
 xyz
x 15.498 0.238 0.000
y 0.238 -10.646 0.000
z 0.000 0.000 -4.851
Polar
3z2-r2-9.703
x2-y217.429
xy0.238
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.022 0.017 0.000
y 0.017 11.417 0.000
z 0.000 0.000 2.287


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000