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: MP2=FULL/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2=FULL/Def2TZVPP
 hartrees
Energy at 0K-209.831119
Energy at 298.15K 
HF Energy-208.891146
Nuclear repulsion energy161.419597
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 MP2=FULL/Def2TZVPP
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 3700 3700 83.35      
2 A1 3312 3312 0.02      
3 A1 3292 3292 0.96      
4 A1 1513 1513 7.40      
5 A1 1438 1438 3.44      
6 A1 1180 1180 2.09      
7 A1 1111 1111 5.14      
8 A1 1048 1048 27.41      
9 A1 894 894 0.18      
10 A2 874 874 0.00      
11 A2 689 689 0.00      
12 A2 627 627 0.00      
13 B1 834 834 4.73      
14 B1 741 741 158.21      
15 B1 654 654 1.41      
16 B1 508 508 64.45      
17 B2 3305 3305 0.83      
18 B2 3282 3282 1.53      
19 B2 1564 1564 1.54      
20 B2 1487 1487 10.29      
21 B2 1318 1318 1.20      
22 B2 1174 1174 2.53      
23 B2 1070 1070 24.74      
24 B2 871 871 1.17      

Unscaled Zero Point Vibrational Energy (zpe) 18242.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18242.0 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 MP2=FULL/Def2TZVPP
ABC
0.30801 0.30203 0.15249

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.116
H2 0.000 0.000 2.119
C3 0.000 1.120 0.334
C4 0.000 -1.120 0.334
C5 0.000 0.707 -0.983
C6 0.000 -0.707 -0.983
H7 0.000 2.102 0.768
H8 0.000 -2.102 0.768
H9 0.000 1.354 -1.839
H10 0.000 -1.354 -1.839

Atom - Atom Distances (Å)
  N1 H2 C3 C4 C5 C6 H7 H8 H9 H10
N11.00291.36611.36612.21432.21432.13042.13043.25053.2505
H21.00292.10712.10713.18093.18092.49852.49854.18314.1831
C31.36612.10712.24081.38012.25251.07293.25122.18593.2936
C41.36612.10712.24082.25251.38013.25121.07293.29362.1859
C52.21433.18091.38012.25251.41432.23803.30971.07362.2324
C62.21433.18092.25251.38011.41433.30972.23802.23241.0736
H72.13042.49851.07293.25122.23803.30974.20362.71184.3291
H82.13042.49853.25121.07293.30972.23804.20364.32912.7118
H93.25054.18312.18593.29361.07362.23242.71184.32912.7088
H103.25054.18313.29362.18592.23241.07364.32912.71182.7088

picture of Pyrrole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 107.476 N1 C3 H7 121.267
N1 C4 C6 107.476 N1 C4 H8 121.267
H2 N1 C3 124.900 H2 N1 C4 124.900
C3 N1 C4 110.199 C3 C5 C6 107.424
C3 C5 H9 125.498 C4 C6 C5 107.424
C4 C6 H10 125.498 C5 C3 H7 131.257
C5 C6 H10 127.078 C6 C4 H8 131.257
C6 C5 H9 127.078
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability