return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B3LYP/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A2
Energy calculated at B3LYP/6-31G
 hartrees
Energy at 0K-209.443419
Energy at 298.15K-209.447900
HF Energy-209.443419
Nuclear repulsion energy149.642305
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 B3LYP/6-31G
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 3300 3175 1.52      
2 A1 3269 3144 4.81      
3 A1 1565 1506 0.25      
4 A1 1412 1359 9.66      
5 A1 1199 1153 0.71      
6 A1 1094 1052 34.77      
7 A1 1061 1020 6.93      
8 A1 894 860 11.20      
9 A2 933 898 0.00      
10 A2 815 784 0.00      
11 A2 493 474 0.00      
12 B1 845 813 1.68      
13 B1 730 702 71.85      
14 B1 552 531 22.55      
15 B2 3277 3153 11.66      
16 B2 3262 3138 8.43      
17 B2 1369 1317 44.62      
18 B2 1314 1265 1.61      
19 B2 1043 1003 13.90      
20 B2 940 904 0.05      
21 B2 565 543 2.26      

Unscaled Zero Point Vibrational Energy (zpe) 14966.1 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 14397.4 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 B3LYP/6-31G
ABC
0.32530 0.29065 0.15350

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.256
C2 0.000 1.082 0.425
C3 0.000 -1.082 0.425
C4 0.000 0.684 -0.989
C5 0.000 -0.684 -0.989
H6 0.000 2.088 0.820
H7 0.000 -2.088 0.820
H8 0.000 1.354 -1.836
H9 0.000 -1.354 -1.836

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 H6 H7 H8 H9
N11.36441.36442.34732.34732.13342.13343.37573.3757
C21.36442.16381.46882.26261.08133.19482.27733.3236
C31.36442.16382.26261.46883.19481.08133.32362.2773
C42.34731.46882.26261.36882.29003.31081.07972.2075
C52.34732.26261.46881.36883.31082.29002.20751.0797
H62.13341.08133.19482.29003.31084.17682.75584.3481
H72.13343.19481.08133.31082.29004.17684.34812.7558
H83.37572.27733.32361.07972.20752.75584.34812.7083
H93.37573.32362.27732.20751.07974.34812.75582.7083

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 111.836 N1 C2 H6 121.025
N1 C3 C5 111.836 N1 C3 H7 121.025
C2 N1 C3 104.925 C2 C4 C5 105.701
C2 C4 H8 125.964 C3 C5 C4 105.701
C3 C5 H9 125.964 C4 C2 H6 127.139
C4 C5 H9 128.335 C5 C3 H7 127.139
C5 C4 H8 128.335
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.385      
2 C 0.026      
3 C 0.026      
4 C -0.143      
5 C -0.143      
6 H 0.160      
7 H 0.160      
8 H 0.149      
9 H 0.149      


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 -2.312 2.312
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.860 0.000 0.000
y 0.000 -22.965 0.000
z 0.000 0.000 -32.226
Traceless
 xyz
x -3.264 0.000 0.000
y 0.000 8.577 0.000
z 0.000 0.000 -5.314
Polar
3z2-r2-10.627
x2-y2-7.894
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.405 0.000 0.000
y 0.000 8.133 0.000
z 0.000 0.000 6.695


<r2> (average value of r2) Å2
<r2> 83.012
(<r2>)1/2 9.111