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: HSEh1PBE/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 HSEh1PBE/3-21G*
 hartrees
Energy at 0K-208.109620
Energy at 298.15K-208.114080
HF Energy-208.109620
Nuclear repulsion energy149.820216
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 HSEh1PBE/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 3320 3186 0.08      
2 A1 3279 3148 3.15      
3 A1 1562 1499 1.10      
4 A1 1384 1329 4.24      
5 A1 1207 1159 0.00      
6 A1 1090 1046 27.04      
7 A1 1040 998 15.33      
8 A1 901 865 12.58      
9 A2 955 917 0.00      
10 A2 822 789 0.00      
11 A2 503 483 0.00      
12 B1 860 825 1.46      
13 B1 740 711 96.96      
14 B1 558 536 25.67      
15 B2 3295 3163 2.26      
16 B2 3272 3141 8.14      
17 B2 1359 1304 46.31      
18 B2 1302 1250 2.87      
19 B2 1025 984 15.56      
20 B2 922 885 0.32      
21 B2 513 492 1.50      

Unscaled Zero Point Vibrational Energy (zpe) 14954.7 cm-1
Scaled (by 0.9599) Zero Point Vibrational Energy (zpe) 14355.0 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 HSEh1PBE/3-21G*
ABC
0.32688 0.29050 0.15381

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.256
C2 0.000 1.080 0.427
C3 0.000 -1.080 0.427
C4 0.000 0.681 -0.989
C5 0.000 -0.681 -0.989
H6 0.000 2.088 0.813
H7 0.000 -2.088 0.813
H8 0.000 1.349 -1.836
H9 0.000 -1.349 -1.836

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 H6 H7 H8 H9
N11.36111.36112.34642.34642.13462.13463.37313.3731
C21.36112.15951.47182.26011.07983.19132.27903.3195
C31.36112.15952.26011.47183.19131.07983.31952.2790
C42.34641.47182.26011.36232.28683.30441.07792.1993
C52.34642.26011.47181.36233.30442.28682.19931.0779
H62.13461.07983.19132.28683.30444.17632.75034.3393
H72.13463.19131.07983.30442.28684.17634.33932.7503
H83.37312.27903.31951.07792.19932.75034.33932.6975
H93.37313.31952.27902.19931.07794.33932.75032.6975

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 111.791 N1 C2 H6 121.550
N1 C3 C5 111.791 N1 C3 H7 121.550
C2 N1 C3 104.990 C2 C4 C5 105.714
C2 C4 H8 126.017 C3 C5 C4 105.714
C3 C5 H9 126.017 C4 C2 H6 126.660
C4 C5 H9 128.269 C5 C3 H7 126.660
C5 C4 H8 128.269
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.511      
2 C 0.044      
3 C 0.044      
4 C -0.263      
5 C -0.263      
6 H 0.246      
7 H 0.246      
8 H 0.228      
9 H 0.228      


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 -2.109 2.109
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.671 0.000 0.000
y 0.000 -22.491 0.000
z 0.000 0.000 -31.500
Traceless
 xyz
x -4.676 0.000 0.000
y 0.000 9.095 0.000
z 0.000 0.000 -4.419
Polar
3z2-r2-8.838
x2-y2-9.181
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.035 0.000 0.000
y 0.000 7.728 0.000
z 0.000 0.000 6.181


<r2> (average value of r2) Å2
<r2> 82.795
(<r2>)1/2 9.099