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All results from a given calculation for C4H5N (Pyrrole)

using model chemistry: PBE1PBE/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 PBE1PBE/3-21G
 hartrees
Energy at 0K-208.765618
Energy at 298.15K 
HF Energy-208.765618
Nuclear repulsion energy160.371022
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 PBE1PBE/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 3652 3507 72.45      
2 A1 3328 3197 0.01      
3 A1 3302 3172 1.88      
4 A1 1499 1440 3.94      
5 A1 1425 1368 7.17      
6 A1 1179 1132 1.57      
7 A1 1119 1074 6.88      
8 A1 1046 1005 30.63      
9 A1 934 897 0.50      
10 A2 927 890 0.00      
11 A2 738 709 0.00      
12 A2 647 622 0.00      
13 B1 887 852 2.36      
14 B1 760 730 144.54      
15 B1 656 630 0.86      
16 B1 620 595 149.06      
17 B2 3318 3187 1.81      
18 B2 3291 3161 1.96      
19 B2 1588 1525 11.66      
20 B2 1456 1398 8.74      
21 B2 1336 1283 0.17      
22 B2 1188 1141 2.39      
23 B2 1081 1038 29.60      
24 B2 917 881 0.79      

Unscaled Zero Point Vibrational Energy (zpe) 18446.2 cm-1
Scaled (by 0.9604) Zero Point Vibrational Energy (zpe) 17715.8 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 PBE1PBE/3-21G
ABC
0.30267 0.29940 0.15051

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.127
H2 0.000 0.000 2.137
C3 0.000 1.130 0.331
C4 0.000 -1.130 0.331
C5 0.000 0.715 -0.984
C6 0.000 -0.715 -0.984
H7 0.000 2.121 0.753
H8 0.000 -2.121 0.753
H9 0.000 1.356 -1.850
H10 0.000 -1.356 -1.850

Atom - Atom Distances (Å)
  N1 H2 C3 C4 C5 C6 H7 H8 H9 H10
N11.00981.38251.38252.22882.22882.15392.15393.27173.2717
H21.00982.13042.13043.20173.20172.53272.53274.21164.2116
C31.38252.13042.26071.37922.26571.07693.27882.19333.3075
C41.38252.13042.26072.26571.37923.27881.07693.30752.1933
C52.22883.20171.37922.26571.42932.23513.32551.07792.2443
C62.22883.20172.26571.37921.42933.32552.23512.24431.0779
H72.15392.53271.07693.27882.23513.32554.24242.71384.3436
H82.15392.53273.27881.07693.32552.23514.24244.34362.7138
H93.27174.21162.19333.30751.07792.24432.71384.34362.7112
H103.27174.21163.30752.19332.24431.07794.34362.71382.7112

picture of Pyrrole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 107.611 N1 C3 H7 121.781
N1 C4 C6 107.611 N1 C4 H8 121.781
H2 N1 C3 125.154 H2 N1 C4 125.154
C3 N1 C4 109.692 C3 C5 C6 107.543
C3 C5 H9 125.970 C4 C6 C5 107.543
C4 C6 H10 125.970 C5 C3 H7 130.608
C5 C6 H10 126.487 C6 C4 H8 130.608
C6 C5 H9 126.487
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.734      
2 H 0.345      
3 C 0.046      
4 C 0.046      
5 C -0.289      
6 C -0.289      
7 H 0.232      
8 H 0.232      
9 H 0.206      
10 H 0.206      


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 2.021 2.021
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.048 0.000 0.000
y 0.000 -25.840 0.000
z 0.000 0.000 -22.780
Traceless
 xyz
x -9.737 0.000 0.000
y 0.000 2.573 0.000
z 0.000 0.000 7.164
Polar
3z2-r214.328
x2-y2-8.207
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.879 0.000 0.000
y 0.000 7.249 0.000
z 0.000 0.000 7.158


<r2> (average value of r2) Å2
<r2> 85.723
(<r2>)1/2 9.259