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All results from a given calculation for C5H5N (Pyridine)

using model chemistry: HF/SDD

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/SDD
 hartrees
Energy at 0K-246.617301
Energy at 298.15K-246.623785
Nuclear repulsion energy206.324534
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/SDD
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 3438 3096 2.90      
2 A1 3414 3074 26.12      
3 A1 3396 3058 1.70      
4 A1 1769 1593 28.05      
5 A1 1637 1474 10.49      
6 A1 1347 1213 3.97      
7 A1 1177 1060 3.46      
8 A1 1124 1012 13.36      
9 A1 1075 968 3.17      
10 A1 669 603 4.68      
11 A2 1138 1025 0.00      
12 A2 1010 910 0.00      
13 A2 445 401 0.00      
14 B1 1157 1042 0.42      
15 B1 1081 973 0.00      
16 B1 853 768 36.01      
17 B1 803 723 96.14      
18 B1 476 428 5.78      
19 B2 3427 3086 63.95      
20 B2 3407 3067 4.56      
21 B2 1765 1589 13.04      
22 B2 1595 1436 39.76      
23 B2 1509 1359 1.43      
24 B2 1327 1195 0.03      
25 B2 1245 1121 5.89      
26 B2 1161 1045 0.02      
27 B2 725 653 0.78      

Unscaled Zero Point Vibrational Energy (zpe) 21085.0 cm-1
Scaled (by 0.9004) Zero Point Vibrational Energy (zpe) 18984.9 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/SDD
ABC
0.20033 0.19585 0.09903

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/SDD

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.405
C2 0.000 0.000 -1.380
C3 0.000 1.151 0.724
C4 0.000 -1.151 0.724
C5 0.000 1.201 -0.671
C6 0.000 -1.201 -0.671
H7 0.000 0.000 -2.452
H8 0.000 2.048 1.308
H9 0.000 -2.048 1.308
H10 0.000 2.145 -1.176
H11 0.000 -2.145 -1.176

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11
N12.78461.33771.33772.39772.39773.85652.05052.05053.35563.3556
C22.78462.39792.39791.39471.39471.07193.37953.37952.15442.1544
C31.33772.39792.30251.39502.73433.37761.07073.25252.14373.8042
C41.33772.39792.30252.73431.39503.37763.25251.07073.80422.1437
C52.39771.39471.39502.73432.40182.14822.15263.80431.07073.3836
C62.39771.39472.73431.39502.40182.14823.80432.15263.38361.0707
H73.85651.07193.37763.37762.14822.14824.28174.28172.49552.4955
H82.05053.37951.07073.25252.15263.80434.28174.09652.48614.8737
H92.05053.37953.25251.07073.80432.15264.28174.09654.87372.4861
H103.35562.15442.14373.80421.07073.38362.49552.48614.87374.2895
H113.35562.15443.80422.14373.38361.07072.49554.87372.48614.2895

picture of Pyridine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 122.650 N1 C3 H8 116.292
N1 C4 C6 122.650 N1 C4 H9 116.292
C2 C5 C3 118.528 C2 C5 H10 121.263
C2 C6 C4 118.528 C2 C6 H11 121.263
C3 N1 C4 118.778 C3 C5 H10 120.209
C4 C6 H11 120.209 C5 C2 C6 118.866
C5 C2 H7 120.567 C5 C3 H8 121.058
C6 C2 H7 120.567 C6 C4 H9 121.058
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.197      
2 C -0.115      
3 C -0.194      
4 C -0.194      
5 C -0.210      
6 C -0.210      
7 H 0.222      
8 H 0.230      
9 H 0.230      
10 H 0.219      
11 H 0.219      


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 -2.734 2.734
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.347 0.000 0.000
y 0.000 -29.145 0.000
z 0.000 0.000 -37.874
Traceless
 xyz
x -5.838 0.000 0.000
y 0.000 9.466 0.000
z 0.000 0.000 -3.629
Polar
3z2-r2-7.257
x2-y2-10.202
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.391 0.000 0.000
y 0.000 9.544 0.000
z 0.000 0.000 8.848


<r2> (average value of r2) Å2
<r2> 122.061
(<r2>)1/2 11.048