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All results from a given calculation for C5H5N (Pyridine)

using model chemistry: HF/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 HF/6-31G**
 hartrees
Energy at 0K-246.704612
Energy at 298.15K-246.711055
Nuclear repulsion energy207.926810
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 HF/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 3381 3052 4.89      
2 A1 3354 3027 22.15      
3 A1 3341 3016 5.15      
4 A1 1799 1624 40.33      
5 A1 1656 1495 8.06      
6 A1 1342 1211 5.31      
7 A1 1179 1065 3.21      
8 A1 1123 1013 6.86      
9 A1 1093 987 6.20      
10 A1 659 595 5.46      
11 A2 1127 1017 0.00      
12 A2 988 892 0.00      
13 A2 437 394 0.00      
14 B1 1133 1022 0.34      
15 B1 1075 970 0.19      
16 B1 840 758 16.83      
17 B1 778 702 56.44      
18 B1 464 418 4.34      
19 B2 3373 3044 39.18      
20 B2 3341 3016 27.12      
21 B2 1789 1615 19.45      
22 B2 1603 1447 39.35      
23 B2 1502 1356 0.70      
24 B2 1312 1184 0.13      
25 B2 1183 1068 6.34      
26 B2 1159 1046 3.08      
27 B2 720 650 0.33      

Unscaled Zero Point Vibrational Energy (zpe) 20875.2 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 18842.0 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 HF/6-31G**
ABC
0.20496 0.19788 0.10068

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.400
C2 0.000 0.000 -1.372
C3 0.000 1.131 0.718
C4 0.000 -1.131 0.718
C5 0.000 1.190 -0.666
C6 0.000 -1.190 -0.666
H7 0.000 0.000 -2.448
H8 0.000 2.037 1.299
H9 0.000 -2.037 1.299
H10 0.000 2.140 -1.169
H11 0.000 -2.140 -1.169

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11
N12.77251.32091.32092.38462.38463.84832.03962.03963.34353.3435
C22.77252.37582.37581.38351.38351.07593.35893.35892.14932.1493
C31.32092.37582.26131.38492.70173.36131.07673.22062.13933.7753
C41.32092.37582.26132.70171.38493.36133.22061.07673.77532.1393
C52.38461.38351.38492.70172.37972.14262.13963.77801.07463.3672
C62.38461.38352.70171.38492.37972.14263.77802.13963.36721.0746
H73.84831.07593.36133.36132.14262.14264.26464.26462.49282.4928
H82.03963.35891.07673.22062.13963.77804.26464.07412.46964.8511
H92.03963.35893.22061.07673.77802.13964.26464.07414.85112.4696
H103.34352.14932.13933.77531.07463.36722.49282.46964.85114.2793
H113.34352.14933.77532.13933.36721.07462.49284.85112.46964.2793

picture of Pyridine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 123.583 N1 C3 H8 116.202
N1 C4 C6 123.583 N1 C4 H9 116.202
C2 C5 C3 118.229 C2 C5 H10 121.426
C2 C6 C4 118.229 C2 C6 H11 121.426
C3 N1 C4 117.735 C3 C5 H10 120.345
C4 C6 H11 120.345 C5 C2 C6 118.639
C5 C2 H7 120.680 C5 C3 H8 120.215
C6 C2 H7 120.680 C6 C4 H9 120.215
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.536 -0.691    
2 C -0.090 0.247    
3 C 0.128 0.492    
4 C 0.128 0.492    
5 C -0.205 -0.466    
6 C -0.205 -0.466    
7 H 0.162 0.062    
8 H 0.151 0.008    
9 H 0.151 0.008    
10 H 0.157 0.157    
11 H 0.157 0.157    


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 -2.310 2.310
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.779 0.000 0.000
y 0.000 -28.913 0.000
z 0.000 0.000 -36.095
Traceless
 xyz
x -5.275 0.000 0.000
y 0.000 8.024 0.000
z 0.000 0.000 -2.749
Polar
3z2-r2-5.498
x2-y2-8.866
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.093 0.000 0.000
y 0.000 9.658 0.000
z 0.000 0.000 8.873


<r2> (average value of r2) Å2
<r2> 119.807
(<r2>)1/2 10.946