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All results from a given calculation for C4H5N (Pyrrole)

using model chemistry: PBEPBE/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/3-21G
 hartrees
Energy at 0K-208.746344
Energy at 298.15K-208.752413
HF Energy-208.746344
Nuclear repulsion energy159.064133
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 PBEPBE/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 3526 3494 51.50      
2 A1 3237 3207 0.06      
3 A1 3211 3182 2.88      
4 A1 1441 1428 2.64      
5 A1 1370 1357 6.33      
6 A1 1137 1126 1.11      
7 A1 1085 1075 4.35      
8 A1 1012 1002 28.02      
9 A1 901 893 0.22      
10 A2 862 855 0.00      
11 A2 674 668 0.00      
12 A2 622 616 0.00      
13 B1 818 810 4.50      
14 B1 713 707 147.65      
15 B1 631 625 0.33      
16 B1 559 553 115.40      
17 B2 3226 3197 3.05      
18 B2 3201 3172 1.82      
19 B2 1526 1512 9.64      
20 B2 1396 1383 7.70      
21 B2 1287 1275 0.11      
22 B2 1148 1137 1.89      
23 B2 1043 1033 28.98      
24 B2 883 875 0.50      

Unscaled Zero Point Vibrational Energy (zpe) 17753.2 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 17591.7 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 PBEPBE/3-21G
ABC
0.29782 0.29449 0.14807

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.136
H2 0.000 0.000 2.156
C3 0.000 1.141 0.334
C4 0.000 -1.141 0.334
C5 0.000 0.719 -0.992
C6 0.000 -0.719 -0.992
H7 0.000 2.138 0.760
H8 0.000 -2.138 0.760
H9 0.000 1.364 -1.866
H10 0.000 -1.364 -1.866

Atom - Atom Distances (Å)
  N1 H2 C3 C4 C5 C6 H7 H8 H9 H10
N11.01931.39471.39472.24662.24662.17132.17133.29733.2973
H21.01932.14942.14943.22883.22882.55352.55354.24634.2463
C31.39472.14942.28141.39152.28401.08493.30672.21093.3334
C41.39472.14942.28142.28401.39153.30671.08493.33342.2109
C52.24663.22881.39152.28401.43802.25503.35181.08592.2587
C62.24663.22882.28401.39151.43803.35182.25502.25871.0859
H72.17132.55351.08493.30672.25503.35184.27682.73764.3773
H82.17132.55353.30671.08493.35182.25504.27684.37732.7376
H93.29734.24632.21093.33341.08592.25872.73764.37732.7278
H103.29734.24633.33342.21092.25871.08594.37732.73762.7278

picture of Pyrrole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 107.479 N1 C3 H7 121.749
N1 C4 C6 107.479 N1 C4 H8 121.749
H2 N1 C3 125.122 H2 N1 C4 125.122
C3 N1 C4 109.755 C3 C5 C6 107.643
C3 C5 H9 125.920 C4 C6 C5 107.643
C4 C6 H10 125.920 C5 C3 H7 130.772
C5 C6 H10 126.437 C6 C4 H8 130.772
C6 C5 H9 126.437
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.664      
2 H 0.324      
3 C 0.039      
4 C 0.039      
5 C -0.254      
6 C -0.254      
7 H 0.206      
8 H 0.206      
9 H 0.179      
10 H 0.179      


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 2.027 2.027
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.924 0.000 0.000
y 0.000 -26.048 0.000
z 0.000 0.000 -22.811
Traceless
 xyz
x -9.494 0.000 0.000
y 0.000 2.319 0.000
z 0.000 0.000 7.175
Polar
3z2-r214.350
x2-y2-7.876
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.919 0.000 0.000
y 0.000 7.524 0.000
z 0.000 0.000 7.349


<r2> (average value of r2) Å2
<r2> 86.871
(<r2>)1/2 9.320