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(2df,p)

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(2df,p)
 hartrees
Energy at 0K-248.191087
Energy at 298.15K-248.197207
Nuclear repulsion energy207.025032
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(2df,p)
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 3221 3085 6.36      
2 A1 3196 3061 5.62      
3 A1 3168 3034 8.23      
4 A1 1648 1578 23.62      
5 A1 1519 1455 4.21      
6 A1 1249 1197 2.41      
7 A1 1099 1053 3.63      
8 A1 1054 1009 2.53      
9 A1 1010 968 9.13      
10 A1 598 573 4.77      
11 A2 1009 966 0.00      
12 A2 907 869 0.00      
13 A2 380 364 0.00      
14 B1 1022 978 0.01      
15 B1 969 928 0.02      
16 B1 774 742 5.09      
17 B1 725 694 43.81      
18 B1 415 397 3.20      
19 B2 3214 3078 23.33      
20 B2 3166 3032 30.63      
21 B2 1646 1577 10.21      
22 B2 1477 1414 26.48      
23 B2 1377 1318 0.00      
24 B2 1327 1271 0.00      
25 B2 1167 1117 1.66      
26 B2 1086 1040 0.15      
27 B2 658 630 0.31      

Unscaled Zero Point Vibrational Energy (zpe) 19539.6 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 18713.0 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 B1B95/6-31G(2df,p)
ABC
0.20383 0.19579 0.09986

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.413
C2 0.000 0.000 -1.378
C3 0.000 1.134 0.718
C4 0.000 -1.134 0.718
C5 0.000 1.191 -0.669
C6 0.000 -1.191 -0.669
H7 0.000 0.000 -2.462
H8 0.000 2.051 1.302
H9 0.000 -2.051 1.302
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
N12.79041.32971.32972.39852.39853.87462.05372.05373.36463.3646
C22.79042.38302.38301.38621.38621.08423.37453.37452.15772.1577
C31.32972.38302.26791.38852.70773.37631.08693.23772.14943.7900
C41.32972.38302.26792.70771.38853.37633.23771.08693.79002.1494
C52.39851.38621.38852.70772.38272.15262.15043.79431.08333.3781
C62.39851.38622.70771.38852.38272.15263.79432.15043.37811.0833
H73.87461.08423.37633.37632.15262.15264.28644.28642.50352.5035
H82.05373.37451.08693.23772.15043.79434.28644.10142.48084.8761
H92.05373.37453.23771.08693.79432.15044.28644.10144.87612.4808
H103.36462.15772.14943.79001.08333.37812.50352.48084.87614.2967
H113.36462.15773.79002.14943.37811.08332.50354.87612.48084.2967

picture of Pyridine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 123.855 N1 C3 H8 116.020
N1 C4 C6 123.855 N1 C4 H9 116.020
C2 C5 C3 118.376 C2 C5 H10 121.311
C2 C6 C4 118.376 C2 C6 H11 121.311
C3 N1 C4 117.029 C3 C5 H10 120.313
C4 C6 H11 120.313 C5 C2 C6 118.508
C5 C2 H7 120.746 C5 C3 H8 120.125
C6 C2 H7 120.746 C6 C4 H9 120.125
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.283      
2 C -0.086      
3 C 0.023      
4 C 0.023      
5 C -0.134      
6 C -0.134      
7 H 0.121      
8 H 0.119      
9 H 0.119      
10 H 0.116      
11 H 0.116      


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 -2.096 2.096
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.524 0.000 0.000
y 0.000 -28.885 0.000
z 0.000 0.000 -35.225
Traceless
 xyz
x -4.469 0.000 0.000
y 0.000 6.989 0.000
z 0.000 0.000 -2.520
Polar
3z2-r2-5.040
x2-y2-7.639
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.792 0.000 0.000
y 0.000 10.287 0.000
z 0.000 0.000 9.406


<r2> (average value of r2) Å2
<r2> 120.197
(<r2>)1/2 10.963