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: MP4/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP4/TZVP
 hartrees
Energy at 0K-209.671051
Energy at 298.15K 
HF Energy-208.875085
Nuclear repulsion energy160.460040
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 MP4/TZVP
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 3682 3545        
2 A1 3289 3167        
3 A1 3268 3146        
4 A1 1501 1445        
5 A1 1418 1366        
6 A1 1160 1117        
7 A1 1100 1060        
8 A1 1037 998        
9 A1 889 856        
10 A2 668 644        
11 A2 527 507        
12 A2 418i 402i        
13 B1 688 662        
14 B1 636 613        
15 B1 544 523        
16 B1 132i 127i        
17 B2 3283 3161        
18 B2 3257 3136        
19 B2 1565 1507        
20 B2 1460 1406        
21 B2 1314 1265        
22 B2 1166 1123        
23 B2 1067 1028        
24 B2 869 837        

Unscaled Zero Point Vibrational Energy (zpe) 16918.5 cm-1
Scaled (by 0.9629) Zero Point Vibrational Energy (zpe) 16290.8 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 MP4/TZVP
ABC
0.30378 0.29900 0.15068

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.125
H2 0.000 0.000 2.132
C3 0.000 1.128 0.332
C4 0.000 -1.128 0.332
C5 0.000 0.714 -0.986
C6 0.000 -0.714 -0.986
H7 0.000 2.114 0.768
H8 0.000 -2.114 0.768
H9 0.000 1.361 -1.850
H10 0.000 -1.361 -1.850

Atom - Atom Distances (Å)
  N1 H2 C3 C4 C5 C6 H7 H8 H9 H10
N11.00711.37861.37862.22862.22862.14442.14443.27183.2718
H21.00712.12412.12413.19893.19892.51632.51634.20844.2084
C31.37862.12412.25531.38172.26461.07883.27132.19463.3100
C41.37862.12412.25532.26461.38173.27131.07883.31002.1946
C52.22863.19891.38172.26461.42752.24483.32811.07962.2476
C62.22863.19892.26461.38171.42753.32812.24482.24761.0796
H72.14442.51631.07883.27132.24483.32814.22902.72434.3514
H82.14442.51633.27131.07883.32812.24484.22904.35142.7243
H93.27184.20842.19463.31001.07962.24762.72434.35142.7224
H103.27184.20843.31002.19462.24761.07964.35142.72432.7224

picture of Pyrrole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 107.684 N1 C3 H7 121.048
N1 C4 C6 107.684 N1 C4 H8 121.048
H2 N1 C3 125.117 H2 N1 C4 125.117
C3 N1 C4 109.767 C3 C5 C6 107.432
C3 C5 H9 125.719 C4 C6 C5 107.432
C4 C6 H10 125.719 C5 C3 H7 131.267
C5 C6 H10 126.849 C6 C4 H8 131.267
C6 C5 H9 126.849
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability