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=FULLultrafine/3-21G*

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=FULLultrafine/3-21G*
 hartrees
Energy at 0K-208.707192
Energy at 298.15K 
HF Energy-208.548770
Nuclear repulsion energy159.761375
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=FULLultrafine/3-21G*
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 3625 3625 64.62      
2 A1 3322 3322 0.07      
3 A1 3296 3296 3.44      
4 A1 1490 1490 3.29      
5 A1 1407 1407 8.45      
6 A1 1167 1167 0.09      
7 A1 1103 1103 7.42      
8 A1 1034 1034 28.96      
9 A1 933 933 0.51      
10 A2 887 887 0.00      
11 A2 718 718 0.00      
12 A2 643 643 0.00      
13 B1 860 860 2.35      
14 B1 747 747 136.90      
15 B1 650 650 0.29      
16 B1 584 584 132.81      
17 B2 3312 3312 3.83      
18 B2 3285 3285 2.03      
19 B2 1575 1575 10.53      
20 B2 1439 1439 10.40      
21 B2 1341 1341 0.10      
22 B2 1181 1181 0.34      
23 B2 1071 1071 24.48      
24 B2 919 919 0.76      

Unscaled Zero Point Vibrational Energy (zpe) 18293.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18293.9 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 B2PLYP=FULLultrafine/3-21G*
ABC
0.30000 0.29718 0.14929

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.134
H2 0.000 0.000 2.144
C3 0.000 1.137 0.330
C4 0.000 -1.137 0.330
C5 0.000 0.718 -0.987
C6 0.000 -0.718 -0.987
H7 0.000 2.126 0.752
H8 0.000 -2.126 0.752
H9 0.000 1.357 -1.853
H10 0.000 -1.357 -1.853

Atom - Atom Distances (Å)
  N1 H2 C3 C4 C5 C6 H7 H8 H9 H10
N11.00971.39231.39232.23962.23962.15982.15983.28123.2812
H21.00972.14042.14043.21253.21252.54072.54074.22124.2212
C31.39232.14042.27351.38272.27481.07533.28972.19463.3146
C41.39232.14042.27352.27481.38273.28971.07533.31462.1946
C52.23963.21251.38272.27481.43522.23833.33341.07632.2480
C62.23963.21252.27481.38271.43523.33342.23832.24801.0763
H72.15982.54071.07533.28972.23833.33344.25162.71674.3496
H82.15982.54073.28971.07533.33342.23834.25164.34962.7167
H93.28124.22122.19463.31461.07632.24802.71674.34962.7138
H103.28124.22123.31462.19462.24801.07634.34962.71672.7138

picture of Pyrrole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 107.622 N1 C3 H7 121.622
N1 C4 C6 107.622 N1 C4 H8 121.622
H2 N1 C3 125.267 H2 N1 C4 125.267
C3 N1 C4 109.466 C3 C5 C6 107.645
C3 C5 H9 125.915 C4 C6 C5 107.645
C4 C6 H10 125.915 C5 C3 H7 130.756
C5 C6 H10 126.440 C6 C4 H8 130.756
C6 C5 H9 126.440
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability