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: B2PLYP/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP/6-311+G(3df,2p)
 hartrees
Energy at 0K-210.059855
Energy at 298.15K 
HF Energy-209.782070
Nuclear repulsion energy161.248215
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 B2PLYP/6-311+G(3df,2p)
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 3696 3696 72.41      
2 A1 3285 3285 0.02      
3 A1 3264 3264 2.13      
4 A1 1506 1506 9.53      
5 A1 1422 1422 3.63      
6 A1 1173 1173 1.93      
7 A1 1100 1100 7.41      
8 A1 1040 1040 30.24      
9 A1 901 901 0.24      
10 A2 889 889 0.00      
11 A2 699 699 0.00      
12 A2 628 628 0.00      
13 B1 847 847 0.92      
14 B1 736 736 162.66      
15 B1 644 644 0.19      
16 B1 487 487 71.56      
17 B2 3279 3279 1.60      
18 B2 3253 3253 2.30      
19 B2 1572 1572 1.72      
20 B2 1455 1455 7.40      
21 B2 1322 1322 0.94      
22 B2 1166 1166 2.15      
23 B2 1072 1072 24.97      
24 B2 876 876 1.52      

Unscaled Zero Point Vibrational Energy (zpe) 18155.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18155.8 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 B2PLYP/6-311+G(3df,2p)
ABC
0.30661 0.30218 0.15219

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.118
H2 0.000 0.000 2.122
C3 0.000 1.122 0.331
C4 0.000 -1.122 0.331
C5 0.000 0.710 -0.981
C6 0.000 -0.710 -0.981
H7 0.000 2.106 0.764
H8 0.000 -2.106 0.764
H9 0.000 1.357 -1.841
H10 0.000 -1.357 -1.841

Atom - Atom Distances (Å)
  N1 H2 C3 C4 C5 C6 H7 H8 H9 H10
N11.00341.37061.37062.21632.21632.13592.13593.25553.2555
H21.00342.11302.11303.18303.18302.50612.50614.18864.1886
C31.37062.11302.24411.37532.25391.07503.25712.18493.2959
C41.37062.11302.24412.25391.37533.25711.07503.29592.1849
C52.21633.18301.37532.25391.42092.23433.31321.07582.2390
C62.21633.18302.25391.37531.42093.31322.23432.23901.0758
H72.13592.50611.07503.25712.23433.31324.21252.71044.3332
H82.13592.50613.25711.07503.31322.23434.21254.33322.7104
H93.25554.18862.18493.29591.07582.23902.71044.33322.7135
H103.25554.18863.29592.18492.23901.07584.33322.71042.7135

picture of Pyrrole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 107.634 N1 C3 H7 121.231
N1 C4 C6 107.634 N1 C4 H8 121.231
H2 N1 C3 125.048 H2 N1 C4 125.048
C3 N1 C4 109.903 C3 C5 C6 107.415
C3 C5 H9 125.661 C4 C6 C5 107.415
C4 C6 H10 125.661 C5 C3 H7 131.135
C5 C6 H10 126.924 C6 C4 H8 131.135
C6 C5 H9 126.924
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.809      
2 H 0.180      
3 C 0.041      
4 C 0.041      
5 C -0.046      
6 C -0.046      
7 H 0.164      
8 H 0.164      
9 H 0.155      
10 H 0.155      


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 1.858 1.858
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.463 0.000 0.000
y 0.000 -27.446 0.000
z 0.000 0.000 -24.178
Traceless
 xyz
x -8.651 0.000 0.000
y 0.000 1.875 0.000
z 0.000 0.000 6.777
Polar
3z2-r213.553
x2-y2-7.017
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.745 0.000 0.000
y 0.000 9.275 0.000
z 0.000 0.000 8.899


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