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: B3LYP/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYP/STO-3G
 hartrees
Energy at 0K-207.543722
Energy at 298.15K-207.549497
HF Energy-207.543722
Nuclear repulsion energy158.428208
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 B3LYP/STO-3G
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 3786 3378 52.27      
2 A1 3533 3153 1.78      
3 A1 3503 3126 16.22      
4 A1 1611 1438 7.10      
5 A1 1514 1351 11.47      
6 A1 1225 1094 3.85      
7 A1 1145 1022 3.67      
8 A1 1088 971 12.47      
9 A1 920 821 0.00      
10 A2 940 839 0.00      
11 A2 741 661 0.00      
12 A2 645 576 0.00      
13 B1 894 798 1.34      
14 B1 766 684 47.31      
15 B1 642 573 7.86      
16 B1 424 378 72.07      
17 B2 3520 3141 20.62      
18 B2 3492 3117 4.15      
19 B2 1696 1513 8.17      
20 B2 1563 1394 6.41      
21 B2 1370 1222 2.23      
22 B2 1192 1064 1.22      
23 B2 1124 1003 13.73      
24 B2 909 811 0.50      

Unscaled Zero Point Vibrational Energy (zpe) 19120.3 cm-1
Scaled (by 0.8924) Zero Point Vibrational Energy (zpe) 17062.9 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 B3LYP/STO-3G
ABC
0.29510 0.29316 0.14706

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.143
H2 0.000 0.000 2.185
C3 0.000 1.148 0.326
C4 0.000 -1.148 0.326
C5 0.000 0.719 -0.991
C6 0.000 -0.719 -0.991
H7 0.000 2.149 0.769
H8 0.000 -2.149 0.769
H9 0.000 1.366 -1.872
H10 0.000 -1.366 -1.872

Atom - Atom Distances (Å)
  N1 H2 C3 C4 C5 C6 H7 H8 H9 H10
N11.04241.40891.40892.25232.25232.18092.18093.31003.3100
H21.04242.18492.18493.25713.25712.57362.57364.28124.2812
C31.40892.18492.29631.38572.28571.09383.32622.20923.3398
C41.40892.18492.29632.28571.38573.32621.09383.33982.2092
C52.25233.25711.38572.28571.43892.26713.36491.09262.2638
C62.25233.25712.28571.38571.43893.36492.26712.26381.0926
H72.18092.57361.09383.32622.26713.36494.29712.75424.3960
H82.18092.57363.32621.09383.36492.26714.29714.39602.7542
H93.31004.28122.20923.33981.09262.26382.75424.39602.7319
H103.31004.28123.33982.20922.26381.09264.39602.75422.7319

picture of Pyrrole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 107.397 N1 C3 H7 120.734
N1 C4 C6 107.397 N1 C4 H8 120.734
H2 N1 C3 125.419 H2 N1 C4 125.419
C3 N1 C4 109.163 C3 C5 C6 108.022
C3 C5 H9 125.695 C4 C6 C5 108.022
C4 C6 H10 125.695 C5 C3 H7 131.870
C5 C6 H10 126.283 C6 C4 H8 131.870
C6 C5 H9 126.283
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.263      
2 H 0.223      
3 C -0.019      
4 C -0.019      
5 C -0.114      
6 C -0.114      
7 H 0.081      
8 H 0.081      
9 H 0.073      
10 H 0.073      


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 1.925 1.925
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.802 0.000 0.000
y 0.000 -25.445 0.000
z 0.000 0.000 -22.423
Traceless
 xyz
x -5.867 0.000 0.000
y 0.000 0.667 0.000
z 0.000 0.000 5.200
Polar
3z2-r210.401
x2-y2-4.356
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.716 0.000 0.000
y 0.000 5.018 0.000
z 0.000 0.000 5.195


<r2> (average value of r2) Å2
<r2> 86.346
(<r2>)1/2 9.292