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/6-311G*

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/6-311G*
 hartrees
Energy at 0K-209.574097
Energy at 298.15K 
HF Energy-208.846946
Nuclear repulsion energy160.712336
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/6-311G*
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 3734 3567 59.66      
2 A1 3280 3133 0.39      
3 A1 3258 3112 5.09      
4 A1 1539 1470 9.18      
5 A1 1449 1384 5.59      
6 A1 1193 1140 3.75      
7 A1 1112 1062 13.88      
8 A1 1051 1004 27.41      
9 A1 908 867 0.34      
10 A2 798 762 0.00      
11 A2 672 642 0.00      
12 A2 602 575 0.00      
13 B1 797 761 3.87      
14 B1 724 692 175.61      
15 B1 637 608 0.28      
16 B1 423 404 85.56      
17 B2 3273 3126 7.93      
18 B2 3247 3101 2.56      
19 B2 1612 1540 4.97      
20 B2 1520 1452 13.54      
21 B2 1328 1268 1.08      
22 B2 1189 1136 1.86      
23 B2 1085 1037 22.29      
24 B2 886 846 1.42      

Unscaled Zero Point Vibrational Energy (zpe) 18158.0 cm-1
Scaled (by 0.9551) Zero Point Vibrational Energy (zpe) 17342.7 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/6-311G*
ABC
0.30463 0.30017 0.15119

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.122
H2 0.000 0.000 2.126
C3 0.000 1.124 0.333
C4 0.000 -1.124 0.333
C5 0.000 0.715 -0.984
C6 0.000 -0.715 -0.984
H7 0.000 2.115 0.767
H8 0.000 -2.115 0.767
H9 0.000 1.366 -1.849
H10 0.000 -1.366 -1.849

Atom - Atom Distances (Å)
  N1 H2 C3 C4 C5 C6 H7 H8 H9 H10
N11.00421.37311.37312.22392.22392.14432.14433.27013.2701
H21.00422.11632.11633.19123.19122.51372.51374.20364.2036
C31.37312.11632.24741.37902.26141.08213.26752.19563.3105
C41.37312.11632.24742.26141.37903.26751.08213.31052.1956
C52.22393.19121.37902.26141.42942.24223.32761.08292.2531
C62.22393.19122.26141.37901.42943.32762.24222.25311.0829
H72.14432.51371.08213.26752.24223.32764.22952.72184.3544
H82.14432.51373.26751.08213.32762.24224.22954.35442.7218
H93.27014.20362.19563.31051.08292.25312.72184.35442.7313
H103.27014.20363.31052.19562.25311.08294.35442.72182.7313

picture of Pyrrole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 107.820 N1 C3 H7 121.255
N1 C4 C6 107.820 N1 C4 H8 121.255
H2 N1 C3 125.076 H2 N1 C4 125.076
C3 N1 C4 109.849 C3 C5 C6 107.255
C3 C5 H9 125.792 C4 C6 C5 107.255
C4 C6 H10 125.792 C5 C3 H7 130.925
C5 C6 H10 126.952 C6 C4 H8 130.925
C6 C5 H9 126.952
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability