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=FULL/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 B2PLYP=FULL/6-31G**
 hartrees
Energy at 0K-209.956125
Energy at 298.15K 
HF Energy-209.716001
Nuclear repulsion energy160.926044
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=FULL/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3726 3726 61.93      
2 A1 3319 3319 0.15      
3 A1 3297 3297 4.88      
4 A1 1532 1532 9.09      
5 A1 1454 1454 4.79      
6 A1 1186 1186 2.32      
7 A1 1115 1115 7.04      
8 A1 1054 1054 26.03      
9 A1 902 902 0.17      
10 A2 858 858 0.00      
11 A2 675 675 0.00      
12 A2 623 623 0.00      
13 B1 818 818 5.74      
14 B1 734 734 117.79      
15 B1 642 642 1.68      
16 B1 460 460 77.62      
17 B2 3313 3313 5.82      
18 B2 3286 3286 2.82      
19 B2 1603 1603 4.35      
20 B2 1490 1490 8.84      
21 B2 1333 1333 1.68      
22 B2 1179 1179 2.31      
23 B2 1086 1086 21.83      
24 B2 880 880 1.33      

Unscaled Zero Point Vibrational Energy (zpe) 18280.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18280.7 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=FULL/6-31G**
ABC
0.30542 0.30094 0.15158

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.121
H2 0.000 0.000 2.126
C3 0.000 1.125 0.332
C4 0.000 -1.125 0.332
C5 0.000 0.711 -0.983
C6 0.000 -0.711 -0.983
H7 0.000 2.110 0.766
H8 0.000 -2.110 0.766
H9 0.000 1.358 -1.845
H10 0.000 -1.358 -1.845

Atom - Atom Distances (Å)
  N1 H2 C3 C4 C5 C6 H7 H8 H9 H10
N11.00481.37401.37402.22082.22082.14002.14003.26243.2624
H21.00482.11752.11753.18903.18902.51062.51064.19694.1969
C31.37402.11752.24911.37782.25801.07713.26382.18933.3020
C41.37402.11752.24912.25801.37783.26381.07713.30202.1893
C52.22083.18901.37782.25801.42292.23923.31951.07812.2423
C62.22083.18902.25801.37781.42293.31952.23922.24231.0781
H72.14002.51061.07713.26382.23923.31954.22062.71694.3415
H82.14002.51063.26381.07713.31952.23924.22064.34152.7169
H93.26244.19692.18933.30201.07812.24232.71694.34152.7168
H103.26244.19693.30202.18932.24231.07814.34152.71692.7168

picture of Pyrrole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 107.620 N1 C3 H7 121.164
N1 C4 C6 107.620 N1 C4 H8 121.164
H2 N1 C3 125.068 H2 N1 C4 125.068
C3 N1 C4 109.863 C3 C5 C6 107.448
C3 C5 H9 125.674 C4 C6 C5 107.448
C4 C6 H10 125.674 C5 C3 H7 131.216
C5 C6 H10 126.878 C6 C4 H8 131.216
C6 C5 H9 126.878
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability