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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 
HF Energy-208.746344
Nuclear repulsion energy159.068377
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 3362 51.46      
2 A1 3237 3087 0.05      
3 A1 3212 3062 2.90      
4 A1 1441 1374 2.57      
5 A1 1370 1306 6.35      
6 A1 1137 1084 1.12      
7 A1 1086 1035 4.16      
8 A1 1012 965 28.20      
9 A1 901 859 0.22      
10 A2 862 822 0.00      
11 A2 673 642 0.00      
12 A2 622 593 0.00      
13 B1 817 779 4.66      
14 B1 713 680 147.38      
15 B1 631 602 0.38      
16 B1 559 533 115.45      
17 B2 3227 3077 2.98      
18 B2 3201 3052 1.88      
19 B2 1526 1455 9.74      
20 B2 1396 1331 7.57      
21 B2 1287 1227 0.12      
22 B2 1148 1094 1.93      
23 B2 1042 994 29.00      
24 B2 883 842 0.50      

Unscaled Zero Point Vibrational Energy (zpe) 17753.8 cm-1
Scaled (by 0.9535) Zero Point Vibrational Energy (zpe) 16928.2 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
0.29789 0.29446 0.14808

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 -1.865
H10 0.000 -1.364 -1.865

Atom - Atom Distances (Å)
  N1 H2 C3 C4 C5 C6 H7 H8 H9 H10
N11.01931.39461.39462.24662.24662.17102.17103.29723.2972
H21.01932.14932.14933.22893.22892.55322.55324.24614.2461
C31.39462.14932.28141.39182.28391.08483.30652.21083.3334
C41.39462.14932.28142.28391.39183.30651.08483.33342.2108
C52.24663.22891.39182.28391.43742.25543.35161.08592.2584
C62.24663.22892.28391.39181.43743.35162.25542.25841.0859
H72.17102.55321.08483.30652.25543.35164.27652.73754.3774
H82.17102.55323.30651.08483.35162.25544.27654.37742.7375
H93.29724.24612.21083.33341.08592.25842.73754.37742.7282
H103.29724.24613.33342.21082.25841.08594.37742.73752.7282

picture of Pyrrole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 107.469 N1 C3 H7 121.740
N1 C4 C6 107.469 N1 C4 H8 121.740
H2 N1 C3 125.120 H2 N1 C4 125.120
C3 N1 C4 109.761 C3 C5 C6 107.651
C3 C5 H9 125.879 C4 C6 C5 107.651
C4 C6 H10 125.879 C5 C3 H7 130.791
C5 C6 H10 126.470 C6 C4 H8 130.791
C6 C5 H9 126.470
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 2.028 2.028
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 2.320 0.000
z 0.000 0.000 7.175
Polar
3z2-r214.349
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 7.525 0.000
z 0.000 0.000 7.348


<r2> (average value of r2) Å2
<r2> 86.867
(<r2>)1/2 9.320