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/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=FULLultrafine/6-31G*
 hartrees
Energy at 0K-209.935800
Energy at 298.15K 
HF Energy-209.704877
Nuclear repulsion energy160.840046
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/6-31G*
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 3693 3503 58.23      
2 A1 3312 3142 0.08      
3 A1 3291 3122 5.82      
4 A1 1532 1453 8.28      
5 A1 1453 1379 5.17      
6 A1 1187 1126 2.23      
7 A1 1117 1060 7.04      
8 A1 1055 1001 26.71      
9 A1 904 857 0.17      
10 A2 848 805 0.00      
11 A2 666 632 0.00      
12 A2 623 591 0.00      
13 B1 808 767 8.56      
14 B1 729 692 123.12      
15 B1 642 609 1.29      
16 B1 445 423 80.74      
17 B2 3307 3137 6.72      
18 B2 3279 3111 2.95      
19 B2 1604 1522 5.01      
20 B2 1490 1413 9.05      
21 B2 1333 1265 1.65      
22 B2 1184 1123 2.27      
23 B2 1089 1033 22.36      
24 B2 881 836 1.26      

Unscaled Zero Point Vibrational Energy (zpe) 18235.7 cm-1
Scaled (by 0.9487) Zero Point Vibrational Energy (zpe) 17300.2 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/6-31G*
ABC
0.30519 0.30065 0.15145

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.124
H2 0.000 0.000 2.131
C3 0.000 1.124 0.331
C4 0.000 -1.124 0.331
C5 0.000 0.714 -0.984
C6 0.000 -0.714 -0.984
H7 0.000 2.113 0.765
H8 0.000 -2.113 0.765
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
N11.00761.37531.37532.22512.22512.14342.14343.26983.2698
H21.00762.12212.12213.19593.19592.51632.51634.20704.2070
C31.37532.12212.24831.37752.26041.08013.26642.19383.3063
C41.37532.12212.24832.26041.37753.26641.08013.30632.1938
C52.22513.19591.37752.26041.42862.23973.32481.08062.2485
C62.22513.19592.26041.37751.42863.32482.23972.24851.0806
H72.14342.51631.08013.26642.23973.32484.22652.72104.3481
H82.14342.51633.26641.08013.32482.23974.22654.34812.7210
H93.26984.20702.19383.30631.08062.24852.72104.34812.7215
H103.26984.20703.30632.19382.24851.08064.34812.72102.7215

picture of Pyrrole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 107.867 N1 C3 H7 121.139
N1 C4 C6 107.867 N1 C4 H8 121.139
H2 N1 C3 125.175 H2 N1 C4 125.175
C3 N1 C4 109.649 C3 C5 C6 107.309
C3 C5 H9 125.947 C4 C6 C5 107.309
C4 C6 H10 125.947 C5 C3 H7 130.995
C5 C6 H10 126.744 C6 C4 H8 130.995
C6 C5 H9 126.744
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability