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: B97D3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A2
Energy calculated at B97D3/6-31G*
 hartrees
Energy at 0K-209.369774
Energy at 298.15K-209.374172
HF Energy-209.369774
Nuclear repulsion energy 
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 B97D3/6-31G*
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 3211 3148 6.47      
2 A1 3160 3098 6.28      
3 A1 1537 1506 0.70      
4 A1 1412 1384 21.82      
5 A1 1193 1169 1.54      
6 A1 1075 1054 37.58      
7 A1 1035 1015 0.26      
8 A1 868 851 11.42      
9 A2 859 842 0.00      
10 A2 777 762 0.00      
11 A2 465 456 0.00      
12 B1 799 783 0.87      
13 B1 687 673 47.98      
14 B1 529 519 21.59      
15 B2 3191 3128 13.55      
16 B2 3156 3094 30.49      
17 B2 1337 1311 40.97      
18 B2 1275 1250 0.08      
19 B2 1065 1044 10.12      
20 B2 922 904 0.00      
21 B2 668 655 1.51      

Unscaled Zero Point Vibrational Energy (zpe) 14609.3 cm-1
Scaled (by 0.9804) Zero Point Vibrational Energy (zpe) 14322.9 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 B97D3/6-31G*
ABC
0.32935 0.28989 0.15418

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.258
C2 0.000 1.069 0.425
C3 0.000 -1.069 0.425
C4 0.000 0.686 -0.990
C5 0.000 -0.686 -0.990
H6 0.000 2.084 0.823
H7 0.000 -2.084 0.823
H8 0.000 1.361 -1.841
H9 0.000 -1.361 -1.841

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 H6 H7 H8 H9
N11.35521.35522.35032.35032.12912.12913.38523.3852
C21.35522.13751.46572.25381.09033.17772.28523.3224
C31.35522.13752.25381.46573.17771.09033.32242.2852
C42.35031.46572.25381.37152.28893.30991.08672.2165
C52.35032.25381.46571.37153.30992.28892.21651.0867
H62.12911.09033.17772.28893.30994.16812.76044.3545
H72.12913.17771.09033.30992.28894.16814.35452.7604
H83.38522.28523.32241.08672.21652.76044.35452.7212
H93.38523.32242.28522.21651.08674.35452.76042.7212

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 114.087 N1 C2 H6 119.511
N1 C3 C5 114.087 N1 C3 H7 119.511
C2 N1 C3 102.443 C2 C4 C5 104.691
C2 C4 H8 127.863 C3 C5 C4 104.691
C3 C5 H9 127.863 C4 C2 H6 126.402
C4 C5 H9 127.446 C5 C3 H7 126.402
C5 C4 H8 127.446
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.396      
2 C 0.045      
3 C 0.045      
4 C -0.153      
5 C -0.153      
6 H 0.157      
7 H 0.157      
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 -2.013 2.013
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.470 0.000 0.000
y 0.000 -23.022 0.000
z 0.000 0.000 -31.074
Traceless
 xyz
x -3.422 0.000 0.000
y 0.000 7.750 0.000
z 0.000 0.000 -4.328
Polar
3z2-r2-8.656
x2-y2-7.448
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.679 0.000 0.000
y 0.000 8.283 0.000
z 0.000 0.000 7.037


<r2> (average value of r2) Å2
<r2> 82.484
(<r2>)1/2 9.082