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: mPW1PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-311G*
 hartrees
Energy at 0K-248.269472
Energy at 298.15K-248.275617
Nuclear repulsion energy206.853881
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 mPW1PW91/6-311G*
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 3227 3080 9.05      
2 A1 3201 3055 8.38      
3 A1 3180 3035 8.99      
4 A1 1661 1585 26.07      
5 A1 1533 1463 3.91      
6 A1 1257 1199 3.70      
7 A1 1106 1056 5.93      
8 A1 1058 1010 4.23      
9 A1 1023 976 8.04      
10 A1 615 587 4.14      
11 A2 1008 962 0.00      
12 A2 902 861 0.00      
13 A2 385 367 0.00      
14 B1 1017 971 0.00      
15 B1 964 920 0.02      
16 B1 770 735 8.35      
17 B1 721 688 73.62      
18 B1 421 402 3.33      
19 B2 3218 3071 35.07      
20 B2 3177 3032 34.38      
21 B2 1656 1580 10.31      
22 B2 1490 1422 29.41      
23 B2 1394 1331 0.05      
24 B2 1322 1262 0.03      
25 B2 1179 1125 2.28      
26 B2 1090 1041 0.00      
27 B2 672 642 0.38      

Unscaled Zero Point Vibrational Energy (zpe) 19623.7 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 18728.8 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 mPW1PW91/6-311G*
ABC
0.20341 0.19551 0.09969

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G*

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 -1.379
C3 0.000 1.135 0.719
C4 0.000 -1.135 0.719
C5 0.000 1.193 -0.670
C6 0.000 -1.193 -0.670
H7 0.000 0.000 -2.464
H8 0.000 2.050 1.306
H9 0.000 -2.050 1.306
H10 0.000 2.150 -1.178
H11 0.000 -2.150 -1.178

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11
N12.79171.33061.33062.39972.39973.87622.05272.05273.36663.3666
C22.79172.38552.38551.38771.38771.08463.37823.37822.15942.1594
C31.33062.38552.27091.38982.71093.37901.08683.23902.15123.7938
C41.33062.38552.27092.71091.38983.37903.23901.08683.79382.1512
C52.39971.38771.38982.71092.38552.15422.15383.79721.08383.3812
C62.39971.38772.71091.38982.38552.15423.79722.15383.38121.0838
H73.87621.08463.37903.37902.15422.15424.29104.29102.50512.5051
H82.05273.37821.08683.23902.15383.79724.29104.09982.48624.8796
H92.05273.37823.23901.08683.79722.15384.29104.09984.87962.4862
H103.36662.15942.15123.79381.08383.38122.50512.48624.87964.3001
H113.36662.15943.79382.15123.38121.08382.50514.87962.48624.3001

picture of Pyridine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 123.787 N1 C3 H8 115.868
N1 C4 C6 123.787 N1 C4 H9 115.868
C2 C5 C3 118.376 C2 C5 H10 121.293
C2 C6 C4 118.376 C2 C6 H11 121.293
C3 N1 C4 117.152 C3 C5 H10 120.331
C4 C6 H11 120.331 C5 C2 C6 118.521
C5 C2 H7 120.739 C5 C3 H8 120.345
C6 C2 H7 120.739 C6 C4 H9 120.345
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.318      
2 C -0.096      
3 C -0.020      
4 C -0.020      
5 C -0.303      
6 C -0.303      
7 H 0.214      
8 H 0.215      
9 H 0.215      
10 H 0.208      
11 H 0.208      


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 -2.214 2.214
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.761 0.000 0.000
y 0.000 -28.860 0.000
z 0.000 0.000 -35.674
Traceless
 xyz
x -5.493 0.000 0.000
y 0.000 7.857 0.000
z 0.000 0.000 -2.364
Polar
3z2-r2-4.728
x2-y2-8.900
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> 120.709
(<r2>)1/2 10.987