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All results from a given calculation for C4H4N (pyrrolide radical)

using model chemistry: HF/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A2
Energy calculated at HF/3-21G
 hartrees
Energy at 0K-207.016386
Energy at 298.15K 
HF Energy-207.016386
Nuclear repulsion energy150.543760
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/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 3462 3135 0.25      
2 A1 3432 3108 6.67      
3 A1 1698 1537 2.05      
4 A1 1485 1345 4.17      
5 A1 1265 1145 2.61      
6 A1 1132 1025 16.04      
7 A1 1052 953 15.04      
8 A1 950 860 10.65      
9 A2 1114 1009 0.00      
10 A2 876 793 0.00      
11 A2 575 521 0.00      
12 B1 920 833 28.69      
13 B1 803 727 86.18      
14 B1 594 538 23.14      
15 B2 3436 3111 15.68      
16 B2 3424 3100 11.09      
17 B2 1449 1312 46.04      
18 B2 1373 1243 34.28      
19 B2 1073 972 1.63      
20 B2 948 858 0.01      
21 B2 1665i 1508i 1721.82      

Unscaled Zero Point Vibrational Energy (zpe) 14696.5 cm-1
Scaled (by 0.9056) Zero Point Vibrational Energy (zpe) 13309.1 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/3-21G
ABC
0.32939 0.29307 0.15508

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.243
C2 0.000 1.083 0.431
C3 0.000 -1.083 0.431
C4 0.000 0.669 -0.988
C5 0.000 -0.669 -0.988
H6 0.000 2.079 0.813
H7 0.000 -2.079 0.813
H8 0.000 1.329 -1.825
H9 0.000 -1.329 -1.825

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 H6 H7 H8 H9
N11.35361.35362.32922.32922.12262.12263.34383.3438
C21.35362.16671.47872.25521.06613.18502.27013.3032
C31.35362.16672.25521.47873.18501.06613.30322.2701
C42.32921.47872.25521.33812.28733.28561.06602.1662
C52.32922.25521.47871.33813.28562.28732.16621.0660
H62.12261.06613.18502.28733.28564.15732.74324.3097
H72.12263.18501.06613.28562.28734.15734.30972.7432
H83.34382.27013.30321.06602.16622.74324.30972.6574
H93.34383.30322.27012.16621.06604.30972.74322.6574

picture of pyrrolide radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C4 110.568 N1 C2 H6 122.171
N1 C3 C5 110.568 N1 C3 H7 122.171
C2 N1 C3 106.322 C2 C4 C5 106.271
C2 C4 H8 125.498 C3 C5 C4 106.271
C3 C5 H9 125.498 C4 C2 H6 127.262
C4 C5 H9 128.231 C5 C3 H7 127.262
C5 C4 H8 128.231
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.592      
2 C 0.083      
3 C 0.083      
4 C -0.300      
5 C -0.300      
6 H 0.260      
7 H 0.260      
8 H 0.253      
9 H 0.253      


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 -2.297 2.297
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.093 0.000 0.000
y 0.000 -22.855 0.000
z 0.000 0.000 -32.362
Traceless
 xyz
x -4.485 0.000 0.000
y 0.000 9.372 0.000
z 0.000 0.000 -4.888
Polar
3z2-r2-9.775
x2-y2-9.238
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.932 0.000 0.000
y 0.000 9.083 0.000
z 0.000 0.000 5.548


<r2> (average value of r2) Å2
<r2> 82.557
(<r2>)1/2 9.086