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=FULL/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 MP4=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-209.911999
Energy at 298.15K 
HF Energy-208.881137
Nuclear repulsion energy160.934948
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=FULL/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        
2 A1 3280 3280        
3 A1 3259 3259        
4 A1 1500 1500        
5 A1 1420 1420        
6 A1 1164 1164        
7 A1 1097 1097        
8 A1 1035 1035        
9 A1 888 888        
10 A2 867 867        
11 A2 684 684        
12 A2 617 617        
13 B1 828 828        
14 B1 726 726        
15 B1 637 637        
16 B1 470 470        
17 B2 3273 3273        
18 B2 3248 3248        
19 B2 1558 1558        
20 B2 1459 1459        
21 B2 1309 1309        
22 B2 1161 1161        
23 B2 1062 1062        
24 B2 855 855        

Unscaled Zero Point Vibrational Energy (zpe) 18045.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18045.4 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=FULL/6-311+G(3df,2p)
ABC
0.30576 0.30064 0.15159

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.120
H2 0.000 0.000 2.125
C3 0.000 1.124 0.333
C4 0.000 -1.124 0.333
C5 0.000 0.712 -0.984
C6 0.000 -0.712 -0.984
H7 0.000 2.108 0.770
H8 0.000 -2.108 0.770
H9 0.000 1.360 -1.845
H10 0.000 -1.360 -1.845

Atom - Atom Distances (Å)
  N1 H2 C3 C4 C5 C6 H7 H8 H9 H10
N11.00481.37171.37172.22102.22102.13742.13743.26223.2622
H21.00482.11492.11493.18923.18922.50642.50644.19654.1965
C31.37172.11492.24701.38002.25871.07743.26132.19113.3033
C41.37172.11492.24702.25871.38003.26131.07743.30332.1911
C52.22103.18921.38002.25871.42302.24203.32081.07802.2432
C62.22103.18922.25871.38001.42303.32082.24202.24321.0780
H72.13742.50641.07743.26132.24203.32084.21692.72004.3436
H82.13742.50643.26131.07743.32082.24204.21694.34362.7200
H93.26224.19652.19113.30331.07802.24322.72004.34362.7196
H103.26224.19653.30332.19112.24321.07804.34362.72002.7196

picture of Pyrrole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 107.638 N1 C3 H7 121.086
N1 C4 C6 107.638 N1 C4 H8 121.086
H2 N1 C3 125.009 H2 N1 C4 125.009
C3 N1 C4 109.982 C3 C5 C6 107.371
C3 C5 H9 125.662 C4 C6 C5 107.371
C4 C6 H10 125.662 C5 C3 H7 131.276
C5 C6 H10 126.967 C6 C4 H8 131.276
C6 C5 H9 126.967
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability