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: B3PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31+G**
 hartrees
Energy at 0K-210.107981
Energy at 298.15K-210.114059
HF Energy-210.107981
Nuclear repulsion energy160.919025
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 B3PW91/6-31+G**
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 3710 3562 70.40      
2 A1 3294 3162 0.01      
3 A1 3272 3142 3.40      
4 A1 1514 1453 12.20      
5 A1 1441 1384 2.88      
6 A1 1184 1137 2.90      
7 A1 1103 1059 8.52      
8 A1 1044 1002 32.82      
9 A1 895 860 0.38      
10 A2 882 847 0.00      
11 A2 689 661 0.00      
12 A2 625 600 0.00      
13 B1 834 800 1.57      
14 B1 731 701 184.31      
15 B1 639 613 0.25      
16 B1 497 478 79.46      
17 B2 3288 3157 2.88      
18 B2 3261 3131 2.84      
19 B2 1587 1524 2.00      
20 B2 1477 1418 7.29      
21 B2 1311 1259 2.08      
22 B2 1171 1124 3.79      
23 B2 1074 1031 30.43      
24 B2 871 836 1.82      

Unscaled Zero Point Vibrational Energy (zpe) 18196.1 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 17470.1 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 B3PW91/6-31+G**
ABC
0.30569 0.30078 0.15161

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.120
H2 0.000 0.000 2.126
C3 0.000 1.123 0.333
C4 0.000 -1.123 0.333
C5 0.000 0.712 -0.983
C6 0.000 -0.712 -0.983
H7 0.000 2.112 0.768
H8 0.000 -2.112 0.768
H9 0.000 1.361 -1.848
H10 0.000 -1.361 -1.848

Atom - Atom Distances (Å)
  N1 H2 C3 C4 C5 C6 H7 H8 H9 H10
N11.00651.37141.37142.22012.22012.14132.14133.26493.2649
H21.00652.11612.11613.18993.18992.51152.51154.20084.2008
C31.37142.11612.24621.37892.25781.08043.26432.19373.3054
C41.37142.11612.24622.25781.37893.26431.08043.30542.1937
C52.22013.18991.37892.25781.42302.24203.32241.08142.2455
C62.22013.18992.25781.37891.42303.32242.24202.24551.0814
H72.14132.51151.08043.26432.24203.32244.22432.72134.3476
H82.14132.51153.26431.08043.32242.24204.22434.34762.7213
H93.26494.20082.19373.30541.08142.24552.72134.34762.7215
H103.26494.20083.30542.19372.24551.08144.34762.72132.7215

picture of Pyrrole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 107.653 N1 C3 H7 121.255
N1 C4 C6 107.653 N1 C4 H8 121.255
H2 N1 C3 125.020 H2 N1 C4 125.020
C3 N1 C4 109.960 C3 C5 C6 107.367
C3 C5 H9 125.736 C4 C6 C5 107.367
C4 C6 H10 125.736 C5 C3 H7 131.092
C5 C6 H10 126.897 C6 C4 H8 131.092
C6 C5 H9 126.897
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.250      
2 H 0.312      
3 C -0.260      
4 C -0.260      
5 C -0.073      
6 C -0.073      
7 H 0.155      
8 H 0.155      
9 H 0.147      
10 H 0.147      


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 1.940 1.940
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.371 0.000 0.000
y 0.000 -26.823 0.000
z 0.000 0.000 -23.503
Traceless
 xyz
x -9.208 0.000 0.000
y 0.000 2.114 0.000
z 0.000 0.000 7.094
Polar
3z2-r214.188
x2-y2-7.548
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.199 0.000 0.000
y 0.000 8.839 0.000
z 0.000 0.000 8.527


<r2> (average value of r2) Å2
<r2> 85.707
(<r2>)1/2 9.258