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All results from a given calculation for C5H5N (Pyridine)

using model chemistry: BLYP/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at BLYP/3-21G
 hartrees
Energy at 0K-246.809520
Energy at 298.15K-246.815587
Nuclear repulsion energy203.601374
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 BLYP/3-21G
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 3139 3122 6.19      
2 A1 3113 3096 6.39      
3 A1 3094 3077 15.28      
4 A1 1539 1530 16.37      
5 A1 1471 1463 5.21      
6 A1 1224 1217 1.09      
7 A1 1081 1075 0.04      
8 A1 1028 1022 7.71      
9 A1 952 947 3.01      
10 A1 619 616 3.86      
11 A2 992 986 0.00      
12 A2 889 884 0.00      
13 A2 372 370 0.00      
14 B1 1013 1007 0.04      
15 B1 944 939 0.16      
16 B1 762 758 2.10      
17 B1 714 710 68.90      
18 B1 417 415 3.03      
19 B2 3127 3110 33.07      
20 B2 3089 3072 26.69      
21 B2 1535 1527 1.45      
22 B2 1439 1431 24.70      
23 B2 1384 1376 1.61      
24 B2 1200 1193 2.50      
25 B2 1187 1181 0.33      
26 B2 1042 1037 0.62      
27 B2 670 666 0.45      

Unscaled Zero Point Vibrational Energy (zpe) 19017.4 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 18912.8 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 BLYP/3-21G
ABC
0.19616 0.19006 0.09653

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.441
C2 0.000 0.000 -1.396
C3 0.000 1.163 0.726
C4 0.000 -1.163 0.726
C5 0.000 1.211 -0.680
C6 0.000 -1.211 -0.680
H7 0.000 0.000 -2.487
H8 0.000 2.088 1.308
H9 0.000 -2.088 1.308
H10 0.000 2.171 -1.197
H11 0.000 -2.171 -1.197

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11
N12.83701.36511.36512.44192.44193.92822.09202.09203.41673.4167
C22.83702.41962.41961.40721.40721.09123.41633.41632.18012.1801
C31.36512.41962.32571.40622.75873.41701.09293.30232.17143.8488
C41.36512.41962.32572.75871.40623.41703.30231.09293.84882.1714
C52.44191.40721.40622.75872.42222.17592.17243.85131.09073.4215
C62.44191.40722.75871.40622.42222.17593.85132.17243.42151.0907
H73.92821.09123.41703.41702.17592.17594.33164.33162.52542.5254
H82.09203.41631.09293.30232.17243.85134.33164.17552.50674.9411
H92.09203.41633.30231.09293.85132.17244.33164.17554.94112.5067
H103.41672.18012.17143.84881.09073.42152.52542.50674.94114.3421
H113.41672.18013.84882.17143.42151.09072.52544.94112.50674.3421

picture of Pyridine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 123.555 N1 C3 H8 116.220
N1 C4 C6 123.555 N1 C4 H9 116.220
C2 C5 C3 118.644 C2 C5 H10 121.050
C2 C6 C4 118.644 C2 C6 H11 121.050
C3 N1 C4 116.823 C3 C5 H10 120.305
C4 C6 H11 120.305 C5 C2 C6 118.779
C5 C2 H7 120.610 C5 C3 H8 120.225
C6 C2 H7 120.610 C6 C4 H9 120.225
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.482      
2 C -0.132      
3 C 0.058      
4 C 0.058      
5 C -0.200      
6 C -0.200      
7 H 0.179      
8 H 0.189      
9 H 0.189      
10 H 0.170      
11 H 0.170      


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 -2.174 2.174
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.812 0.000 0.000
y 0.000 -29.214 0.000
z 0.000 0.000 -35.991
Traceless
 xyz
x -5.210 0.000 0.000
y 0.000 7.688 0.000
z 0.000 0.000 -2.479
Polar
3z2-r2-4.957
x2-y2-8.598
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> 123.985
(<r2>)1/2 11.135