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All results from a given calculation for C5H5N (Pyridine)

using model chemistry: HF/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-39.918765
Energy at 298.15K-39.925252
Nuclear repulsion energy104.233932
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/CEP-121G
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 3382 3086 2.00      
2 A1 3359 3065 28.51      
3 A1 3338 3046 1.49      
4 A1 1751 1597 28.89      
5 A1 1620 1478 9.54      
6 A1 1331 1214 3.77      
7 A1 1165 1063 2.76      
8 A1 1112 1015 13.25      
9 A1 1060 967 2.64      
10 A1 661 603 4.52      
11 A2 1123 1025 0.00      
12 A2 1004 916 0.00      
13 A2 440 401 0.00      
14 B1 1142 1042 0.06      
15 B1 1072 979 0.03      
16 B1 839 766 48.53      
17 B1 792 723 63.93      
18 B1 470 429 5.86      
19 B2 3372 3077 67.31      
20 B2 3351 3058 2.85      
21 B2 1743 1591 12.95      
22 B2 1576 1439 38.39      
23 B2 1494 1363 1.45      
24 B2 1306 1191 0.05      
25 B2 1220 1113 7.00      
26 B2 1147 1047 0.05      
27 B2 716 653 0.79      

Unscaled Zero Point Vibrational Energy (zpe) 20792.0 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 18972.7 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/CEP-121G
ABC
0.19905 0.19392 0.09822

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.422
C2 0.000 0.000 -1.378
C3 0.000 1.155 0.735
C4 0.000 -1.155 0.735
C5 0.000 1.205 -0.665
C6 0.000 -1.205 -0.665
H7 0.000 0.000 -2.453
H8 0.000 2.054 1.321
H9 0.000 -2.054 1.321
H10 0.000 2.152 -1.170
H11 0.000 -2.152 -1.170

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11
N12.80031.34371.34372.41022.41023.87512.05652.05653.36923.3692
C22.80032.40802.40801.40021.40021.07473.39183.39182.16202.1620
C31.34372.40802.30941.40102.74393.39051.07343.26182.15053.8163
C41.34372.40802.30942.74391.40103.39053.26181.07343.81632.1505
C52.41021.40021.40102.74392.41012.15602.16003.81661.07333.3949
C62.41021.40022.74391.40102.41012.15603.81662.16003.39491.0733
H73.87511.07473.39053.39052.15602.15604.29674.29672.50532.5053
H82.05653.39181.07343.26182.16003.81664.29674.10812.49324.8885
H92.05653.39183.26181.07343.81662.16004.29674.10814.88852.4932
H103.36922.16202.15053.81631.07333.39492.50532.49324.88854.3040
H113.36922.16203.81632.15053.39491.07332.50534.88852.49324.3040

picture of Pyridine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 122.818 N1 C3 H8 116.152
N1 C4 C6 122.818 N1 C4 H9 116.152
C2 C5 C3 118.554 C2 C5 H10 121.311
C2 C6 C4 118.554 C2 C6 H11 121.311
C3 N1 C4 118.483 C3 C5 H10 120.135
C4 C6 H11 120.135 C5 C2 C6 118.774
C5 C2 H7 120.613 C5 C3 H8 121.031
C6 C2 H7 120.613 C6 C4 H9 121.031
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.046      
2 C -0.180      
3 C -0.327      
4 C -0.327      
5 C -0.066      
6 C -0.066      
7 H 0.190      
8 H 0.168      
9 H 0.168      
10 H 0.197      
11 H 0.197      


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 -2.720 2.720
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.020 0.000 0.000
y 0.000 -29.179 0.000
z 0.000 0.000 -37.928
Traceless
 xyz
x -5.466 0.000 0.000
y 0.000 9.295 0.000
z 0.000 0.000 -3.829
Polar
3z2-r2-7.658
x2-y2-9.841
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.175 0.000 0.000
y 0.000 10.120 0.000
z 0.000 0.000 9.303


<r2> (average value of r2) Å2
<r2> 99.896
(<r2>)1/2 9.995