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: CCSD/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 CCSD/TZVP
 hartrees
Energy at 0K-209.632872
Energy at 298.15K 
HF Energy-208.876389
Nuclear repulsion energy161.082588
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 CCSD/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 3726 3556 74.28      
2 A1 3312 3161 0.17      
3 A1 3290 3140 3.37      
4 A1 1535 1465 13.45      
5 A1 1445 1380 5.01      
6 A1 1186 1132 2.88      
7 A1 1109 1059 13.89      
8 A1 1050 1002 28.90      
9 A1 906 865 0.41      
10 A2 700 668 0.00      
11 A2 600 572 0.00      
12 A2 101i 96i 0.00      
13 B1 737 703 16.04      
14 B1 681 650 171.56      
15 B1 590 563 0.96      
16 B1 169 162 55.30      
17 B2 3305 3154 4.35      
18 B2 3279 3129 2.59      
19 B2 1609 1536 2.61      
20 B2 1489 1421 11.75      
21 B2 1337 1276 0.84      
22 B2 1181 1127 1.27      
23 B2 1089 1039 21.06      
24 B2 886 845 1.84      

Unscaled Zero Point Vibrational Energy (zpe) 17554.7 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 16754.2 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 CCSD/TZVP
ABC
0.30563 0.30190 0.15188

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.121
H2 0.000 0.000 2.125
C3 0.000 1.123 0.330
C4 0.000 -1.123 0.330
C5 0.000 0.714 -0.981
C6 0.000 -0.714 -0.981
H7 0.000 2.109 0.763
H8 0.000 -2.109 0.763
H9 0.000 1.360 -1.842
H10 0.000 -1.360 -1.842

Atom - Atom Distances (Å)
  N1 H2 C3 C4 C5 C6 H7 H8 H9 H10
N11.00371.37341.37342.21922.21922.13882.13883.26053.2605
H21.00372.11702.11703.18603.18602.51022.51024.19374.1937
C31.37342.11702.24531.37262.25571.07683.26002.18503.2988
C41.37342.11702.24532.25571.37263.26001.07683.29882.1850
C52.21923.18601.37262.25571.42712.23253.31701.07752.2457
C62.21923.18602.25571.37261.42713.31702.23252.24571.0775
H72.13882.51021.07683.26002.23253.31704.21712.71044.3379
H82.13882.51023.26001.07683.31702.23254.21714.33792.7104
H93.26054.19372.18503.29881.07752.24572.71044.33792.7202
H103.26054.19373.29882.18502.24571.07754.33792.71042.7202

picture of Pyrrole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 107.836 N1 C3 H7 121.121
N1 C4 C6 107.836 N1 C4 H8 121.121
H2 N1 C3 125.175 H2 N1 C4 125.175
C3 N1 C4 109.649 C3 C5 C6 107.340
C3 C5 H9 125.786 C4 C6 C5 107.340
C4 C6 H10 125.786 C5 C3 H7 131.044
C5 C6 H10 126.874 C6 C4 H8 131.044
C6 C5 H9 126.874
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability