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

using model chemistry: B1B95/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-311G*
 hartrees
Energy at 0K-226.075476
Energy at 298.15K-226.081509
HF Energy-226.075476
Nuclear repulsion energy167.436263
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 B1B95/6-311G*
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 3244 3109 21.57      
2 A1 3092 2964 0.05      
3 A1 1739 1667 19.42      
4 A1 1429 1370 1.10      
5 A1 1399 1341 28.84      
6 A1 1270 1217 6.45      
7 A1 1047 1004 1.57      
8 A1 939 900 13.46      
9 A2 1158 1110 0.00      
10 A2 927 888 0.00      
11 A2 552 529 0.00      
12 B1 3131 3001 0.00      
13 B1 1013 971 20.58      
14 B1 832 798 6.04      
15 B1 375 359 38.58      
16 B2 3228 3094 10.35      
17 B2 1810 1735 0.63      
18 B2 1408 1349 39.72      
19 B2 1246 1195 1.05      
20 B2 1093 1047 31.58      
21 B2 933 894 75.53      

Unscaled Zero Point Vibrational Energy (zpe) 15930.8 cm-1
Scaled (by 0.9586) Zero Point Vibrational Energy (zpe) 15271.3 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 B1B95/6-311G*
ABC
0.36382 0.30790 0.17220

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.193
N2 0.000 0.996 0.279
N3 0.000 -0.996 0.279
C4 0.000 0.724 -0.940
C5 0.000 -0.724 -0.940
H6 -0.890 0.000 1.826
H7 0.890 0.000 1.826
H8 0.000 1.470 -1.723
H9 0.000 -1.470 -1.723

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35171.35172.25222.25221.09211.09213.26523.2652
N21.35171.99251.24902.10852.04372.04372.05723.1767
N31.35171.99252.10851.24902.04372.04373.17672.0572
C42.25221.24902.10851.44832.99422.99421.08152.3299
C52.25222.10851.24901.44832.99422.99422.32991.0815
H61.09212.04372.04372.99422.99421.77973.94283.9428
H71.09212.04372.04372.99422.99421.77973.94283.9428
H83.26522.05723.17671.08152.32993.94283.94282.9406
H93.26523.17672.05722.32991.08153.94283.94282.9406

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 119.937 C1 N3 C5 119.937
N2 C1 N3 94.960 N2 C1 H6 113.068
N2 C1 H7 113.068 N2 C4 C5 102.583
N2 C4 H8 123.792 N3 C1 H6 113.068
N3 C1 H7 113.068 N3 C5 C4 102.583
N3 C5 H9 123.792 C4 C5 H9 133.624
C5 C4 H8 133.624 H6 C1 H7 109.134
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.226      
2 N -0.268      
3 N -0.268      
4 C -0.109      
5 C -0.109      
6 H 0.268      
7 H 0.268      
8 H 0.222      
9 H 0.222      


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 -0.621 0.621
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.107 0.000 0.000
y 0.000 -34.685 0.000
z 0.000 0.000 -21.640
Traceless
 xyz
x 0.056 0.000 0.000
y 0.000 -9.812 0.000
z 0.000 0.000 9.756
Polar
3z2-r219.512
x2-y26.578
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.700 0.000 0.000
y 0.000 5.257 0.000
z 0.000 0.000 7.955


<r2> (average value of r2) Å2
<r2> 76.503
(<r2>)1/2 8.747