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/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-209.295789
Energy at 298.15K-209.300359
HF Energy-209.295789
Nuclear repulsion energy151.362037
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/6-31G(2df,p)
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 3282 3143 1.51      
2 A1 3225 3089 1.78      
3 A1 1585 1518 0.27      
4 A1 1464 1402 24.43      
5 A1 1219 1167 1.84      
6 A1 1104 1058 37.02      
7 A1 1059 1014 0.07      
8 A1 879 842 13.07      
9 A2 915 877 0.00      
10 A2 836 801 0.00      
11 A2 498 477 0.00      
12 B1 848 812 1.15      
13 B1 726 695 48.19      
14 B1 546 522 19.24      
15 B2 3260 3122 4.43      
16 B2 3221 3085 19.78      
17 B2 1364 1306 50.35      
18 B2 1293 1238 0.01      
19 B2 1097 1051 4.89      
20 B2 949 908 0.01      
21 B2 692 663 6.09      

Unscaled Zero Point Vibrational Energy (zpe) 15030.4 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 14394.6 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/6-31G(2df,p)
ABC
0.33584 0.29527 0.15713

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.245
C2 0.000 1.057 0.423
C3 0.000 -1.057 0.423
C4 0.000 0.678 -0.981
C5 0.000 -0.678 -0.981
H6 0.000 2.069 0.816
H7 0.000 -2.069 0.816
H8 0.000 1.353 -1.825
H9 0.000 -1.353 -1.825

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 H6 H7 H8 H9
N11.33931.33932.32702.32702.11302.11303.35523.3552
C21.33932.11481.45432.23251.08523.15102.26783.2961
C31.33932.11482.23251.45433.15101.08523.29612.2678
C42.32701.45432.23251.35672.27213.28281.08062.1996
C52.32702.23251.45431.35673.28282.27212.19961.0806
H62.11301.08523.15102.27213.28284.13802.73684.3225
H72.11303.15101.08523.28282.27214.13804.32252.7368
H83.35522.26783.29611.08062.19962.73684.32252.7052
H93.35523.29612.26782.19961.08064.32252.73682.7052

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 112.749 N1 C2 H6 120.921
N1 C3 C5 112.749 N1 C3 H7 120.921
C2 N1 C3 104.285 C2 C4 C5 105.108
C2 C4 H8 126.288 C3 C5 C4 105.108
C3 C5 H9 126.288 C4 C2 H6 126.329
C4 C5 H9 128.604 C5 C3 H7 126.329
C5 C4 H8 128.604
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.254      
2 C -0.006      
3 C -0.006      
4 C -0.157      
5 C -0.157      
6 H 0.148      
7 H 0.148      
8 H 0.142      
9 H 0.142      


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 -1.984 1.984
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.379 0.000 0.000
y 0.000 -22.852 0.000
z 0.000 0.000 -30.869
Traceless
 xyz
x -3.519 0.000 0.000
y 0.000 7.772 0.000
z 0.000 0.000 -4.253
Polar
3z2-r2-8.507
x2-y2-7.527
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.219 0.000 0.000
y 0.000 8.262 0.000
z 0.000 0.000 6.971


<r2> (average value of r2) Å2
<r2> 81.210
(<r2>)1/2 9.012