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 (3(4H)-Pyridinone)

using model chemistry: MP2/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at MP2/TZVP
 hartrees
Energy at 0K-322.662929
Energy at 298.15K 
HF Energy-321.618565
Nuclear repulsion energy271.533396
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/TZVP
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' 3255 3086 19.42      
2 A' 3226 3058 1.14      
3 A' 3189 3023 10.00      
4 A' 3074 2914 2.65      
5 A' 1721 1631 99.65      
6 A' 1668 1581 19.48      
7 A' 1586 1504 0.98      
8 A' 1435 1360 0.09      
9 A' 1424 1350 21.68      
10 A' 1379 1307 0.73      
11 A' 1349 1279 8.64      
12 A' 1266 1200 7.37      
13 A' 1232 1168 2.42      
14 A' 1035 981 13.10      
15 A' 971 921 3.12      
16 A' 939 890 4.79      
17 A' 753 714 11.12      
18 A' 585 554 4.17      
19 A' 503 476 12.41      
20 A' 445 422 12.91      
21 A" 3115 2953 0.26      
22 A" 1175 1114 3.18      
23 A" 934 885 0.09      
24 A" 871 826 1.03      
25 A" 827 784 1.16      
26 A" 716 679 35.13      
27 A" 512 485 4.64      
28 A" 349 331 16.09      
29 A" 223 211 2.20      
30 A" 101i 96i 4.84      

Unscaled Zero Point Vibrational Energy (zpe) 19828.5 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 18795.4 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/TZVP
ABC
0.17587 0.09260 0.06134

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.321 -1.035 0.000
C2 1.260 0.246 0.000
C3 0.000 1.062 0.000
C4 -1.297 0.277 0.000
C5 -1.112 -1.208 0.000
C6 0.107 -1.763 0.000
O7 0.040 2.278 0.000
H8 2.184 0.823 0.000
H9 -1.875 0.594 0.874
H10 -1.993 -1.839 0.000
H11 0.245 -2.836 0.000
H12 -1.875 0.594 -0.874

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12
N11.28232.47842.92812.43841.41543.55232.04813.69153.40992.09813.6915
C21.28231.50172.55792.78242.31692.37091.08853.27333.86413.24513.2733
C32.47841.50171.51652.52822.82791.21672.19682.12083.51973.90592.1208
C42.92812.55791.51651.49682.47702.40693.52341.09422.22703.47371.0942
C52.43842.78242.52821.49681.33923.67193.87082.14341.08372.11842.1434
C61.41542.31692.82792.47701.33924.04243.31653.20142.10171.08123.2014
O73.55232.37091.21672.40693.67194.04242.59162.69554.59145.11842.6955
H82.04811.08852.19683.52343.87083.31652.59164.15784.95254.14064.1578
H93.69153.27332.12081.09422.14343.20142.69554.15782.58734.12541.7470
H103.40993.86413.51972.22701.08372.10174.59144.95252.58732.44992.5873
H112.09813.24513.90593.47372.11841.08125.11844.14064.12542.44994.1254
H123.69153.27332.12081.09422.14343.20142.69554.15781.74702.58734.1254

picture of 3(4H)-Pyridinone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 125.621 N1 C2 H8 119.293
N1 C6 C5 124.530 N1 C6 H11 113.686
C2 N1 C6 118.291 C2 C3 C4 115.875
C2 C3 O7 121.065 C3 C2 H8 115.086
C3 C4 C5 114.070 C3 C4 H9 107.548
C3 C4 H12 107.548 C4 C3 O7 123.060
C4 C5 C6 121.611 C4 C5 H10 118.430
C5 C4 H9 110.672 C5 C4 H12 110.672
C5 C6 H11 121.784 C6 C5 H10 119.958
H9 C4 H12 105.941
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability