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: HF/aug-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 HF/aug-cc-pVDZ
 hartrees
Energy at 0K-208.839054
Energy at 298.15K-208.845418
HF Energy-208.839054
Nuclear repulsion energy161.819582
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 HF/aug-cc-pVDZ
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 3913 3563 93.64      
2 A1 3422 3116 0.11      
3 A1 3398 3094 4.14      
4 A1 1623 1478 17.21      
5 A1 1528 1391 5.31      
6 A1 1249 1137 2.88      
7 A1 1144 1041 24.78      
8 A1 1094 996 29.52      
9 A1 960 874 0.71      
10 A2 976 889 0.00      
11 A2 803 732 0.00      
12 A2 670 610 0.00      
13 B1 960 874 0.82      
14 B1 819 746 181.22      
15 B1 678 617 0.66      
16 B1 509 464 92.16      
17 B2 3416 3111 4.76      
18 B2 3385 3083 4.01      
19 B2 1712 1559 3.07      
20 B2 1573 1432 8.05      
21 B2 1411 1285 0.96      
22 B2 1227 1117 1.40      
23 B2 1145 1042 21.09      
24 B2 939 855 3.15      

Unscaled Zero Point Vibrational Energy (zpe) 19275.6 cm-1
Scaled (by 0.9106) Zero Point Vibrational Energy (zpe) 17552.4 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 HF/aug-cc-pVDZ
ABC
0.30791 0.30511 0.15325

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.115
H2 0.000 0.000 2.109
C3 0.000 1.115 0.328
C4 0.000 -1.115 0.328
C5 0.000 0.715 -0.975
C6 0.000 -0.715 -0.975
H7 0.000 2.102 0.756
H8 0.000 -2.102 0.756
H9 0.000 1.364 -1.834
H10 0.000 -1.364 -1.834

Atom - Atom Distances (Å)
  N1 H2 C3 C4 C5 C6 H7 H8 H9 H10
N10.99331.36451.36452.20952.20952.13202.13203.24993.2499
H20.99332.10042.10043.16573.16572.49902.49904.17234.1723
C31.36452.10042.22951.36352.24671.07563.24462.17713.2898
C41.36452.10042.22952.24671.36353.24461.07563.28982.1771
C52.20953.16571.36352.24671.43022.21833.30631.07672.2498
C62.20953.16572.24671.36351.43023.30632.21832.24981.0767
H72.13202.49901.07563.24462.21833.30634.20312.69364.3270
H82.13202.49903.24461.07563.30632.21834.20314.32702.6936
H93.24994.17232.17713.28981.07672.24982.69364.32702.7283
H103.24994.17233.28982.17712.24981.07674.32702.69362.7283

picture of Pyrrole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 108.176 N1 C3 H7 121.337
N1 C4 C6 108.176 N1 C4 H8 121.337
H2 N1 C3 125.219 H2 N1 C4 125.219
C3 N1 C4 109.562 C3 C5 C6 107.043
C3 C5 H9 125.885 C4 C6 C5 107.043
C4 C6 H10 125.885 C5 C3 H7 130.487
C5 C6 H10 127.072 C6 C4 H8 130.487
C6 C5 H9 127.072
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.464      
2 H -0.125      
3 C 0.483      
4 C 0.483      
5 C 0.421      
6 C 0.421      
7 H -0.277      
8 H -0.277      
9 H -0.332      
10 H -0.332      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 1.863 1.863
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.929 0.000 0.000
y 0.000 -27.111 0.000
z 0.000 0.000 -24.030
Traceless
 xyz
x -9.359 0.000 0.000
y 0.000 2.369 0.000
z 0.000 0.000 6.990
Polar
3z2-r213.980
x2-y2-7.819
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.699 0.000 0.000
y 0.000 8.853 0.000
z 0.000 0.000 8.721


<r2> (average value of r2) Å2
<r2> 85.257
(<r2>)1/2 9.233