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

using model chemistry: HF/CEP-31G*

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/CEP-31G*
 hartrees
Energy at 0K-33.905020
Energy at 298.15K 
HF Energy-33.905020
Nuclear repulsion energy76.309724
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-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 3451 3099 5.37      
2 A1 3415 3067 6.81      
3 A1 1709 1535 0.07      
4 A1 1582 1421 28.57      
5 A1 1258 1129 0.73      
6 A1 1174 1054 33.41      
7 A1 1093 981 0.17      
8 A1 927 832 11.20      
9 A2 1037 931 0.00      
10 A2 869 780 0.00      
11 A2 546 490 0.00      
12 B1 894 803 17.60      
13 B1 790 710 86.66      
14 B1 584 524 19.24      
15 B2 3425 3076 37.38      
16 B2 3405 3057 39.40      
17 B2 1439 1293 83.91      
18 B2 1378 1238 21.79      
19 B2 1102 990 3.76      
20 B2 948 851 0.64      
21 B2 1272i 1142i 1732.44      

Unscaled Zero Point Vibrational Energy (zpe) 14876.5 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 13359.1 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/CEP-31G*
ABC
0.33125 0.29004 0.15464

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.248
C2 0.000 1.069 0.433
C3 0.000 -1.069 0.433
C4 0.000 0.681 -0.994
C5 0.000 -0.681 -0.994
H6 0.000 2.074 0.828
H7 0.000 -2.074 0.828
H8 0.000 1.353 -1.835
H9 0.000 -1.353 -1.835

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 H6 H7 H8 H9
N11.34411.34412.34292.34292.11592.11593.36683.3668
C21.34412.13751.47862.25751.07963.16712.28563.3178
C31.34412.13752.25751.47863.16711.07963.31782.2856
C42.34291.47862.25751.36142.29303.30211.07682.2007
C52.34292.25751.47861.36143.30212.29302.20071.0768
H62.11591.07963.16712.29303.30214.14732.75834.3394
H72.11593.16711.07963.30212.29304.14734.33942.7583
H83.36682.28563.31781.07682.20072.75834.33942.7059
H93.36683.31782.28562.20071.07684.33942.75832.7059

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 112.115 N1 C2 H6 121.227
N1 C3 C5 112.115 N1 C3 H7 121.227
C2 N1 C3 105.336 C2 C4 C5 105.217
C2 C4 H8 126.149 C3 C5 C4 105.217
C3 C5 H9 126.149 C4 C2 H6 126.659
C4 C5 H9 128.634 C5 C3 H7 126.659
C5 C4 H8 128.634
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.084      
2 C -0.406      
3 C -0.406      
4 C -0.184      
5 C -0.184      
6 H 0.247      
7 H 0.247      
8 H 0.301      
9 H 0.301      


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 -2.260 2.260
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.676 0.000 0.000
y 0.000 -22.648 0.000
z 0.000 0.000 -32.157
Traceless
 xyz
x -4.273 0.000 0.000
y 0.000 9.268 0.000
z 0.000 0.000 -4.995
Polar
3z2-r2-9.990
x2-y2-9.028
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.279 0.000 0.000
y 0.000 10.094 0.000
z 0.000 0.000 6.427


<r2> (average value of r2) Å2
<r2> 68.403
(<r2>)1/2 8.271