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: B1B95/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-311G**
 hartrees
Energy at 0K-248.230286
Energy at 298.15K-248.236413
Nuclear repulsion energy207.001677
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 A1 3215 3087 6.63      
2 A1 3190 3062 5.99      
3 A1 3164 3038 7.50      
4 A1 1649 1583 24.19      
5 A1 1517 1457 4.00      
6 A1 1246 1197 3.64      
7 A1 1098 1054 5.85      
8 A1 1052 1010 2.91      
9 A1 1013 973 8.30      
10 A1 604 580 4.16      
11 A2 1007 967 0.00      
12 A2 901 865 0.00      
13 A2 378 363 0.00      
14 B1 1018 978 0.00      
15 B1 961 923 0.02      
16 B1 765 734 8.86      
17 B1 719 691 64.52      
18 B1 414 397 3.40      
19 B2 3207 3079 25.64      
20 B2 3161 3035 31.51      
21 B2 1646 1581 10.47      
22 B2 1477 1418 27.41      
23 B2 1378 1323 0.00      
24 B2 1318 1265 0.02      
25 B2 1167 1121 2.04      
26 B2 1084 1041 0.00      
27 B2 663 637 0.39      

Unscaled Zero Point Vibrational Energy (zpe) 19506.3 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 18728.0 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 B1B95/6-311G**
ABC
0.20376 0.19573 0.09983

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.412
C2 0.000 0.000 -1.378
C3 0.000 1.135 0.719
C4 0.000 -1.135 0.719
C5 0.000 1.191 -0.669
C6 0.000 -1.191 -0.669
H7 0.000 0.000 -2.462
H8 0.000 2.050 1.303
H9 0.000 -2.050 1.303
H10 0.000 2.148 -1.177
H11 0.000 -2.148 -1.177

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11
N12.79061.33001.33002.39852.39853.87392.05272.05273.36393.3639
C22.79062.38402.38401.38641.38641.08343.37513.37512.15712.1571
C31.33002.38402.26931.38892.70863.37641.08593.23772.14903.7902
C41.33002.38402.26932.70861.38893.37643.23771.08593.79022.1490
C52.39851.38641.38892.70862.38292.15222.15103.79421.08263.3775
C62.39851.38642.70861.38892.38292.15223.79422.15103.37751.0826
H73.87391.08343.37643.37642.15222.15224.28654.28652.50272.5027
H82.05273.37511.08593.23772.15103.79424.28654.09962.48174.8753
H92.05273.37513.23771.08593.79422.15104.28654.09964.87532.4817
H103.36392.15712.14903.79021.08263.37752.50272.48174.87534.2954
H113.36392.15713.79022.14903.37751.08262.50274.87532.48174.2954

picture of Pyridine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 123.790 N1 C3 H8 115.986
N1 C4 C6 123.790 N1 C4 H9 115.986
C2 C5 C3 118.410 C2 C5 H10 121.291
C2 C6 C4 118.410 C2 C6 H11 121.291
C3 N1 C4 117.109 C3 C5 H10 120.299
C4 C6 H11 120.299 C5 C2 C6 118.493
C5 C2 H7 120.754 C5 C3 H8 120.224
C6 C2 H7 120.754 C6 C4 H9 120.224
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 -0.308      
2 C -0.004      
3 C 0.065      
4 C 0.065      
5 C -0.206      
6 C -0.206      
7 H 0.118      
8 H 0.124      
9 H 0.124      
10 H 0.114      
11 H 0.114      


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 -2.172 2.172
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.456 0.000 0.000
y 0.000 -29.077 0.000
z 0.000 0.000 -35.781
Traceless
 xyz
x -5.027 0.000 0.000
y 0.000 7.542 0.000
z 0.000 0.000 -2.514
Polar
3z2-r2-5.029
x2-y2-8.379
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.977 0.000 0.000
y 0.000 10.457 0.000
z 0.000 0.000 9.557


<r2> (average value of r2) Å2
<r2> 120.569
(<r2>)1/2 10.980