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 C5H5N (Pyridine)

using model chemistry: B3PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-248.195598
Energy at 298.15K-248.201709
Nuclear repulsion energy206.170166
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 B3PW91/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3223 3089 6.43      
2 A1 3198 3065 6.38      
3 A1 3174 3042 9.98      
4 A1 1652 1584 23.10      
5 A1 1525 1462 3.84      
6 A1 1251 1199 3.05      
7 A1 1101 1055 4.64      
8 A1 1053 1009 2.93      
9 A1 1012 970 8.31      
10 A1 609 584 4.12      
11 A2 999 958 0.00      
12 A2 899 861 0.00      
13 A2 381 365 0.00      
14 B1 1013 971 0.00      
15 B1 959 919 0.00      
16 B1 764 732 7.64      
17 B1 718 688 51.07      
18 B1 417 400 3.43      
19 B2 3215 3081 25.53      
20 B2 3171 3039 31.40      
21 B2 1649 1580 9.68      
22 B2 1483 1422 26.53      
23 B2 1385 1328 0.00      
24 B2 1333 1278 0.06      
25 B2 1175 1126 1.68      
26 B2 1088 1042 0.05      
27 B2 667 639 0.40      

Unscaled Zero Point Vibrational Energy (zpe) 19556.6 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 18743.0 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 B3PW91/6-31G**
ABC
0.20205 0.19421 0.09902

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.419
C2 0.000 0.000 -1.383
C3 0.000 1.139 0.721
C4 0.000 -1.139 0.721
C5 0.000 1.197 -0.672
C6 0.000 -1.197 -0.672
H7 0.000 0.000 -2.470
H8 0.000 2.058 1.307
H9 0.000 -2.058 1.307
H10 0.000 2.156 -1.181
H11 0.000 -2.156 -1.181

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11
N12.80201.33601.33602.40882.40883.88872.06082.06083.37753.3775
C22.80202.39312.39311.39221.39221.08673.38713.38712.16512.1651
C31.33602.39312.27901.39422.72003.38851.08933.25052.15703.8050
C41.33602.39312.27902.72001.39423.38853.25051.08933.80502.1570
C52.40881.39221.39422.72002.39342.16002.15813.80891.08593.3909
C62.40881.39222.72001.39422.39342.16003.80892.15813.39091.0859
H73.88871.08673.38853.38852.16002.16004.30124.30122.51152.5115
H82.06083.38711.08933.25052.15813.80894.30124.11562.49034.8934
H92.06083.38713.25051.08933.80892.15814.30124.11564.89342.4903
H103.37752.16512.15703.80501.08593.39092.51152.49034.89344.3113
H113.37752.16513.80502.15703.39091.08592.51154.89342.49034.3113

picture of Pyridine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 123.824 N1 C3 H8 115.994
N1 C4 C6 123.824 N1 C4 H9 115.994
C2 C5 C3 118.379 C2 C5 H10 121.285
C2 C6 C4 118.379 C2 C6 H11 121.285
C3 N1 C4 117.057 C3 C5 H10 120.336
C4 C6 H11 120.336 C5 C2 C6 118.538
C5 C2 H7 120.731 C5 C3 H8 120.182
C6 C2 H7 120.731 C6 C4 H9 120.182
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.441      
2 C -0.089      
3 C 0.074      
4 C 0.074      
5 C -0.137      
6 C -0.137      
7 H 0.135      
8 H 0.132      
9 H 0.132      
10 H 0.129      
11 H 0.129      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -2.207 2.207
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.891 0.000 0.000
y 0.000 -28.678 0.000
z 0.000 0.000 -35.410
Traceless
 xyz
x -4.847 0.000 0.000
y 0.000 7.472 0.000
z 0.000 0.000 -2.625
Polar
3z2-r2-5.251
x2-y2-8.212
xy0.000
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 121.088
(<r2>)1/2 11.004