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All results from a given calculation for C4H5N (Pyrrole)

using model chemistry: HF/CEP-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 HF/CEP-31G
 hartrees
Energy at 0K-34.429567
Energy at 298.15K-34.436062
HF Energy-34.429567
Nuclear repulsion energy83.044368
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/CEP-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 3951 3562 81.17      
2 A1 3484 3140 0.75      
3 A1 3453 3112 13.69      
4 A1 1627 1467 20.65      
5 A1 1545 1393 3.53      
6 A1 1243 1120 0.92      
7 A1 1164 1049 16.25      
8 A1 1109 1000 56.21      
9 A1 964 869 0.93      
10 A2 1053 949 0.00      
11 A2 863 778 0.00      
12 A2 674 607 0.00      
13 B1 1015 915 1.54      
14 B1 860 775 205.16      
15 B1 681 614 80.38      
16 B1 660 595 117.64      
17 B2 3472 3130 27.42      
18 B2 3436 3098 3.45      
19 B2 1717 1547 8.58      
20 B2 1569 1414 13.79      
21 B2 1425 1285 0.38      
22 B2 1266 1142 0.66      
23 B2 1156 1042 30.66      
24 B2 948 855 2.79      

Unscaled Zero Point Vibrational Energy (zpe) 19666.7 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 17727.6 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/CEP-31G
ABC
0.30069 0.29634 0.14925

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.120
H2 0.000 0.000 2.116
C3 0.000 1.131 0.321
C4 0.000 -1.131 0.321
C5 0.000 0.723 -1.005
C6 0.000 -0.723 -1.005
H7 0.000 2.117 0.743
H8 0.000 -2.117 0.743
H9 0.000 1.366 -1.863
H10 0.000 -1.366 -1.863

Atom - Atom Distances (Å)
  N1 H2 C3 C4 C5 C6 H7 H8 H9 H10
N10.99571.38491.38492.24462.24462.15042.15043.28073.2807
H20.99572.12142.12143.20343.20342.52312.52314.20654.2065
C31.38492.12142.26261.38752.27981.07233.27572.19663.3175
C41.38492.12142.26262.27981.38753.27571.07233.31752.1966
C52.24463.20341.38752.27981.44632.23583.33511.07202.2583
C62.24463.20342.27981.38751.44633.33512.23582.25831.0720
H72.15042.52311.07233.27572.23583.33514.23422.71214.3499
H82.15042.52313.27571.07233.33512.23584.23424.34992.7121
H93.28074.20652.19663.31751.07202.25832.71214.34992.7317
H103.28074.20653.31752.19662.25831.07204.34992.71212.7317

picture of Pyrrole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 108.120 N1 C3 H7 121.599
N1 C4 C6 108.120 N1 C4 H8 121.599
H2 N1 C3 125.227 H2 N1 C4 125.227
C3 N1 C4 109.545 C3 C5 C6 107.107
C3 C5 H9 126.056 C4 C6 C5 107.107
C4 C6 H10 126.056 C5 C3 H7 130.281
C5 C6 H10 126.837 C6 C4 H8 130.281
C6 C5 H9 126.837
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.232      
2 H 0.373      
3 C -0.403      
4 C -0.403      
5 C -0.193      
6 C -0.193      
7 H 0.242      
8 H 0.242      
9 H 0.284      
10 H 0.284      


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 1.963 1.963
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.093 0.000 0.000
y 0.000 -26.640 0.000
z 0.000 0.000 -23.730
Traceless
 xyz
x -9.908 0.000 0.000
y 0.000 2.771 0.000
z 0.000 0.000 7.137
Polar
3z2-r214.274
x2-y2-8.452
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.284 0.000 0.000
y 0.000 7.377 0.000
z 0.000 0.000 7.759


<r2> (average value of r2) Å2
<r2> 72.608
(<r2>)1/2 8.521