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All results from a given calculation for C3H4N2 (2H-Imidazole)

using model chemistry: LSDA/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 LSDA/6-311G**
 hartrees
Energy at 0K-224.937426
Energy at 298.15K-224.943384
HF Energy-224.937426
Nuclear repulsion energy167.277409
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 LSDA/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 3134 3096 11.49      
2 A1 2975 2939 4.59      
3 A1 1686 1665 15.10      
4 A1 1376 1359 0.00      
5 A1 1289 1273 51.46      
6 A1 1239 1224 8.59      
7 A1 1028 1016 2.15      
8 A1 911 900 13.89      
9 A2 1079 1066 0.00      
10 A2 896 885 0.00      
11 A2 544 537 0.00      
12 B1 3009 2972 5.69      
13 B1 944 932 19.82      
14 B1 798 788 5.44      
15 B1 377 372 42.99      
16 B2 3120 3081 3.52      
17 B2 1756 1734 0.73      
18 B2 1344 1328 37.92      
19 B2 1172 1157 0.05      
20 B2 1048 1035 22.81      
21 B2 915 904 88.59      

Unscaled Zero Point Vibrational Energy (zpe) 15319.4 cm-1
Scaled (by 0.9877) Zero Point Vibrational Energy (zpe) 15131.0 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 LSDA/6-311G**
ABC
0.36449 0.30690 0.17210

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.188
N2 0.000 0.995 0.283
N3 0.000 -0.995 0.283
C4 0.000 0.722 -0.942
C5 0.000 -0.722 -0.942
H6 -0.894 0.000 1.838
H7 0.894 0.000 1.838
H8 0.000 1.475 -1.733
H9 0.000 -1.475 -1.733

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.34521.34522.24852.24851.10541.10543.27213.2721
N21.34521.99091.25502.10912.05112.05112.07223.1888
N31.34521.99092.10911.25502.05112.05113.18882.0722
C42.24851.25502.10911.44323.00753.00751.09272.3351
C52.24852.10911.25501.44323.00753.00752.33511.0927
H61.10542.05112.05113.00753.00751.78843.96533.9653
H71.10542.05112.05113.00753.00751.78843.96533.9653
H83.27212.07223.18881.09272.33513.96533.96532.9508
H93.27213.18882.07222.33511.09273.96533.96532.9508

picture of 2H-Imidazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C4 119.665 C1 N3 C5 119.665
N2 C1 N3 95.465 N2 C1 H6 113.289
N2 C1 H7 113.289 N2 C4 C5 102.603
N2 C4 H8 123.779 N3 C1 H6 113.289
N3 C1 H7 113.289 N3 C5 C4 102.603
N3 C5 H9 123.779 C4 C5 H9 133.618
C5 C4 H8 133.618 H6 C1 H7 107.993
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.089      
2 N -0.255      
3 N -0.255      
4 C -0.053      
5 C -0.053      
6 H 0.209      
7 H 0.209      
8 H 0.144      
9 H 0.144      


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 -0.384 0.384
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.260 0.000 0.000
y 0.000 -35.014 0.000
z 0.000 0.000 -21.696
Traceless
 xyz
x 0.095 0.000 0.000
y 0.000 -10.036 0.000
z 0.000 0.000 9.941
Polar
3z2-r219.882
x2-y26.753
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.862 0.000 0.000
y 0.000 5.615 0.000
z 0.000 0.000 8.298


<r2> (average value of r2) Å2
<r2> 76.753
(<r2>)1/2 8.761