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 C4H5N (Pyrrole)

using model chemistry: PBEPBE/6-31G**

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/6-31G**
 hartrees
Energy at 0K-209.908849
Energy at 298.15K-209.914755
HF Energy-209.908849
Nuclear repulsion energy160.042522
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/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 3610 3561 47.80      
2 A1 3220 3176 0.11      
3 A1 3199 3155 4.54      
4 A1 1476 1456 8.29      
5 A1 1409 1389 3.08      
6 A1 1158 1142 2.65      
7 A1 1079 1064 5.03      
8 A1 1020 1006 24.95      
9 A1 870 858 0.04      
10 A2 834 823 0.00      
11 A2 635 627 0.00      
12 A2 611 602 0.00      
13 B1 779 768 7.65      
14 B1 701 691 114.98      
15 B1 626 618 1.75      
16 B1 449 443 66.75      
17 B2 3214 3170 5.30      
18 B2 3188 3144 2.45      
19 B2 1547 1526 3.27      
20 B2 1438 1419 5.89      
21 B2 1271 1253 2.57      
22 B2 1139 1124 3.29      
23 B2 1046 1032 24.05      
24 B2 845 833 0.92      

Unscaled Zero Point Vibrational Energy (zpe) 17681.1 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 17438.9 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 PBEPBE/6-31G**
ABC
0.30255 0.29746 0.14999

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.126
H2 0.000 0.000 2.139
C3 0.000 1.130 0.334
C4 0.000 -1.130 0.334
C5 0.000 0.714 -0.989
C6 0.000 -0.714 -0.989
H7 0.000 2.124 0.775
H8 0.000 -2.124 0.775
H9 0.000 1.366 -1.860
H10 0.000 -1.366 -1.860

Atom - Atom Distances (Å)
  N1 H2 C3 C4 C5 C6 H7 H8 H9 H10
N11.01391.37931.37932.23122.23122.15282.15283.28303.2830
H21.01392.12942.12943.20833.20832.52452.52454.22614.2261
C31.37932.12942.25981.38702.26911.08743.28372.20693.3234
C41.37932.12942.25982.26911.38703.28371.08743.32342.2069
C52.23123.20831.38702.26911.42722.25823.34101.08852.2549
C62.23123.20832.26911.38701.42723.34102.25822.25491.0885
H72.15282.52451.08743.28372.25823.34104.24812.74164.3731
H82.15282.52453.28371.08743.34102.25824.24814.37312.7416
H93.28304.22612.20693.32341.08852.25492.74164.37312.7324
H103.28304.22613.32342.20692.25491.08854.37312.74162.7324

picture of Pyrrole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 107.528 N1 C3 H7 121.106
N1 C4 C6 107.528 N1 C4 H8 121.106
H2 N1 C3 124.995 H2 N1 C4 124.995
C3 N1 C4 110.009 C3 C5 C6 107.468
C3 C5 H9 125.697 C4 C6 C5 107.468
C4 C6 H10 125.697 C5 C3 H7 131.367
C5 C6 H10 126.835 C6 C4 H8 131.367
C6 C5 H9 126.835
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.470      
2 H 0.264      
3 C 0.053      
4 C 0.053      
5 C -0.143      
6 C -0.143      
7 H 0.105      
8 H 0.105      
9 H 0.087      
10 H 0.087      


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 1.932 1.932
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.887 0.000 0.000
y 0.000 -26.385 0.000
z 0.000 0.000 -23.087
Traceless
 xyz
x -8.151 0.000 0.000
y 0.000 1.602 0.000
z 0.000 0.000 6.549
Polar
3z2-r213.098
x2-y2-6.502
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.751 0.000 0.000
y 0.000 8.103 0.000
z 0.000 0.000 7.899


<r2> (average value of r2) Å2
<r2> 85.966
(<r2>)1/2 9.272