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: B1B95/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-31G
 hartrees
Energy at 0K-248.106887
Energy at 298.15K-248.113069
Nuclear repulsion energy205.675603
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 B1B95/6-31G
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 3257 3106 3.48      
2 A1 3233 3083 19.00      
3 A1 3221 3072 1.44      
4 A1 1648 1572 15.60      
5 A1 1529 1459 7.91      
6 A1 1266 1207 2.05      
7 A1 1112 1060 2.88      
8 A1 1064 1015 4.41      
9 A1 1012 965 6.00      
10 A1 619 591 3.76      
11 A2 1027 979 0.00      
12 A2 923 880 0.00      
13 A2 386 368 0.00      
14 B1 1050 1001 0.02      
15 B1 980 935 0.01      
16 B1 777 741 11.71      
17 B1 736 702 66.37      
18 B1 429 409 4.73      
19 B2 3246 3096 40.17      
20 B2 3222 3073 14.63      
21 B2 1646 1570 6.45      
22 B2 1497 1428 29.46      
23 B2 1413 1348 0.18      
24 B2 1328 1267 0.49      
25 B2 1211 1155 1.18      
26 B2 1102 1051 0.17      
27 B2 676 645 0.68      

Unscaled Zero Point Vibrational Energy (zpe) 19805.5 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 18888.5 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 B1B95/6-31G
ABC
0.19977 0.19439 0.09852

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.417
C2 0.000 0.000 -1.382
C3 0.000 1.153 0.721
C4 0.000 -1.153 0.721
C5 0.000 1.200 -0.672
C6 0.000 -1.200 -0.672
H7 0.000 0.000 -2.466
H8 0.000 2.062 1.310
H9 0.000 -2.062 1.310
H10 0.000 2.154 -1.185
H11 0.000 -2.154 -1.185

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11
N12.79911.34631.34632.40952.40953.88282.06492.06493.37813.3781
C22.79912.39842.39841.39461.39461.08373.39113.39112.16322.1632
C31.34632.39842.30501.39422.73453.38891.08353.26812.15343.8168
C41.34632.39842.30502.73451.39423.38893.26811.08353.81682.1534
C52.40951.39461.39422.73452.40072.15822.16133.81741.08303.3935
C62.40951.39462.73451.39422.40072.15823.81742.16133.39351.0830
H73.88281.08373.38893.38892.15822.15824.30214.30212.50612.5061
H82.06493.39111.08353.26812.16133.81744.30214.12422.49684.8992
H92.06493.39113.26811.08353.81742.16134.30214.12424.89922.4968
H103.37812.16322.15343.81681.08303.39352.50612.49684.89924.3084
H113.37812.16323.81682.15343.39351.08302.50614.89922.49684.3084

picture of Pyridine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 123.089 N1 C3 H8 115.964
N1 C4 C6 123.089 N1 C4 H9 115.964
C2 C5 C3 118.634 C2 C5 H10 121.129
C2 C6 C4 118.634 C2 C6 H11 121.129
C3 N1 C4 117.756 C3 C5 H10 120.237
C4 C6 H11 120.237 C5 C2 C6 118.797
C5 C2 H7 120.601 C5 C3 H8 120.947
C6 C2 H7 120.601 C6 C4 H9 120.947
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.381      
2 C -0.144      
3 C -0.017      
4 C -0.017      
5 C -0.142      
6 C -0.142      
7 H 0.169      
8 H 0.171      
9 H 0.171      
10 H 0.165      
11 H 0.165      


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 -2.498 2.498
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.229 0.000 0.000
y 0.000 -28.699 0.000
z 0.000 0.000 -36.402
Traceless
 xyz
x -4.679 0.000 0.000
y 0.000 8.116 0.000
z 0.000 0.000 -3.438
Polar
3z2-r2-6.875
x2-y2-8.530
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.797 0.000 0.000
y 0.000 9.977 0.000
z 0.000 0.000 9.031


<r2> (average value of r2) Å2
<r2> 121.821
(<r2>)1/2 11.037