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: CCD/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCD/cc-pVDZ
 hartrees
Energy at 0K-209.550941
Energy at 298.15K 
HF Energy-208.826729
Nuclear repulsion energy159.989399
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 CCD/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3726 3564 77.03      
2 A1 3307 3164 0.22      
3 A1 3284 3142 3.40      
4 A1 1541 1474 11.61      
5 A1 1456 1392 3.92      
6 A1 1194 1142 4.69      
7 A1 1103 1055 11.01      
8 A1 1042 997 23.47      
9 A1 897 858 0.16      
10 A2 861 824 0.00      
11 A2 703 673 0.00      
12 A2 615 589 0.00      
13 B1 837 801 1.29      
14 B1 741 708 129.02      
15 B1 642 614 0.59      
16 B1 456 436 71.01      
17 B2 3299 3157 4.77      
18 B2 3272 3131 2.24      
19 B2 1610 1540 1.84      
20 B2 1521 1455 10.78      
21 B2 1319 1262 1.62      
22 B2 1173 1122 1.72      
23 B2 1076 1029 18.88      
24 B2 875 837 1.18      

Unscaled Zero Point Vibrational Energy (zpe) 18273.5 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 17482.3 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 CCD/cc-pVDZ
ABC
0.30229 0.29721 0.14987

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.126
H2 0.000 0.000 2.136
C3 0.000 1.127 0.336
C4 0.000 -1.127 0.336
C5 0.000 0.718 -0.989
C6 0.000 -0.718 -0.989
H7 0.000 2.124 0.775
H8 0.000 -2.124 0.775
H9 0.000 1.375 -1.860
H10 0.000 -1.375 -1.860

Atom - Atom Distances (Å)
  N1 H2 C3 C4 C5 C6 H7 H8 H9 H10
N11.01041.37671.37672.23342.23342.15312.15313.28663.2866
H21.01042.12432.12433.20673.20672.52282.52284.22554.2255
C31.37672.12432.25481.38692.27141.08973.28142.20913.3286
C41.37672.12432.25482.27141.38693.28141.08973.32862.2091
C52.23343.20671.38692.27141.43502.25693.34531.09062.2660
C62.23343.20672.27141.38691.43503.34532.25692.26601.0906
H72.15312.52281.08973.28142.25693.34534.24892.73954.3803
H82.15312.52283.28141.08973.34532.25694.24894.38032.7395
H93.28664.22552.20913.32861.09062.26602.73954.38032.7495
H103.28664.22553.32862.20912.26601.09064.38032.73952.7495

picture of Pyrrole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 107.834 N1 C3 H7 121.177
N1 C4 C6 107.834 N1 C4 H8 121.177
H2 N1 C3 125.023 H2 N1 C4 125.023
C3 N1 C4 109.953 C3 C5 C6 107.189
C3 C5 H9 125.750 C4 C6 C5 107.189
C4 C6 H10 125.750 C5 C3 H7 130.989
C5 C6 H10 127.061 C6 C4 H8 130.989
C6 C5 H9 127.061
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability