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All results from a given calculation for C5H5N (Pyridine)

using model chemistry: mPW1PW91/6-31G(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 mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-248.240344
Energy at 298.15K-248.246498
Nuclear repulsion energy206.884624
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 mPW1PW91/6-31G(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 3232 3086 5.71      
2 A1 3207 3062 5.26      
3 A1 3180 3036 7.43      
4 A1 1653 1579 25.07      
5 A1 1527 1458 4.48      
6 A1 1255 1198 2.64      
7 A1 1105 1055 3.85      
8 A1 1058 1010 3.63      
9 A1 1018 972 8.82      
10 A1 609 581 4.71      
11 A2 1015 969 0.00      
12 A2 911 870 0.00      
13 A2 386 368 0.00      
14 B1 1027 980 0.01      
15 B1 975 931 0.01      
16 B1 779 744 5.41      
17 B1 729 696 47.79      
18 B1 420 401 3.24      
19 B2 3224 3078 21.53      
20 B2 3178 3034 28.57      
21 B2 1651 1576 10.16      
22 B2 1483 1416 27.85      
23 B2 1385 1322 0.01      
24 B2 1327 1267 0.03      
25 B2 1174 1121 1.87      
26 B2 1089 1040 0.08      
27 B2 666 636 0.30      

Unscaled Zero Point Vibrational Energy (zpe) 19631.6 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 18742.2 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 mPW1PW91/6-31G(2df,p)
ABC
0.20351 0.19555 0.09972

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(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 -1.379
C3 0.000 1.135 0.719
C4 0.000 -1.135 0.719
C5 0.000 1.192 -0.670
C6 0.000 -1.192 -0.670
H7 0.000 0.000 -2.463
H8 0.000 2.052 1.303
H9 0.000 -2.052 1.303
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
N12.79191.33051.33052.40002.40003.87642.05452.05453.36653.3665
C22.79192.38482.38481.38741.38741.08453.37673.37672.15902.1590
C31.33052.38482.26971.38962.71003.37831.08723.23962.15083.7927
C41.33052.38482.26972.71001.38963.37833.23961.08723.79272.1508
C52.40001.38741.38962.71002.38492.15382.15183.79681.08363.3805
C62.40001.38742.71001.38962.38492.15383.79682.15183.38051.0836
H73.87641.08453.37833.37832.15382.15384.28904.28902.50482.5048
H82.05453.37671.08723.23962.15183.79684.28904.10322.48284.8790
H92.05453.37673.23961.08723.79682.15184.28904.10324.87902.4828
H103.36652.15902.15083.79271.08363.38052.50482.48284.87904.2993
H113.36652.15903.79272.15083.38051.08362.50484.87902.48284.2993

picture of Pyridine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 123.836 N1 C3 H8 116.019
N1 C4 C6 123.836 N1 C4 H9 116.019
C2 C5 C3 118.363 C2 C5 H10 121.307
C2 C6 C4 118.363 C2 C6 H11 121.307
C3 N1 C4 117.078 C3 C5 H10 120.330
C4 C6 H11 120.330 C5 C2 C6 118.524
C5 C2 H7 120.738 C5 C3 H8 120.145
C6 C2 H7 120.738 C6 C4 H9 120.145
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.288      
2 C -0.101      
3 C 0.010      
4 C 0.010      
5 C -0.160      
6 C -0.160      
7 H 0.140      
8 H 0.139      
9 H 0.139      
10 H 0.136      
11 H 0.136      


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 -2.125 2.125
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.632 0.000 0.000
y 0.000 -28.710 0.000
z 0.000 0.000 -35.177
Traceless
 xyz
x -4.689 0.000 0.000
y 0.000 7.194 0.000
z 0.000 0.000 -2.506
Polar
3z2-r2-5.012
x2-y2-7.922
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.812 0.000 0.000
y 0.000 10.254 0.000
z 0.000 0.000 9.395


<r2> (average value of r2) Å2
<r2> 120.308
(<r2>)1/2 10.969