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

using model chemistry: BLYP/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at BLYP/cc-pVTZ
 hartrees
Energy at 0K-226.122216
Energy at 298.15K-226.128165
HF Energy-226.122216
Nuclear repulsion energy166.100687
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 BLYP/cc-pVTZ
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 3124 3115 22.56      
2 A1 2966 2957 0.07      
3 A1 1628 1624 21.77      
4 A1 1362 1358 7.29      
5 A1 1344 1340 17.35      
6 A1 1216 1213 6.13      
7 A1 998 995 3.88      
8 A1 891 889 11.35      
9 A2 1108 1105 0.00      
10 A2 893 891 0.00      
11 A2 535 533 0.00      
12 B1 2988 2979 0.29      
13 B1 976 973 18.18      
14 B1 804 801 5.64      
15 B1 367 366 36.12      
16 B2 3110 3101 11.04      
17 B2 1689 1684 0.85      
18 B2 1322 1318 32.91      
19 B2 1206 1202 1.71      
20 B2 1047 1044 30.94      
21 B2 915 912 77.02      

Unscaled Zero Point Vibrational Energy (zpe) 15244.4 cm-1
Scaled (by 0.997) Zero Point Vibrational Energy (zpe) 15198.7 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 BLYP/cc-pVTZ
ABC
0.36097 0.30084 0.16939

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.207
N2 0.000 0.997 0.282
N3 0.000 -0.997 0.282
C4 0.000 0.731 -0.952
C5 0.000 -0.731 -0.952
H6 -0.893 0.000 1.849
H7 0.893 0.000 1.849
H8 0.000 1.482 -1.737
H9 0.000 -1.482 -1.737

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35981.35982.27902.27901.10021.10023.29613.2961
N21.35981.99431.26262.12342.06072.06072.07703.1979
N31.35981.99432.12341.26262.06072.06073.19792.0770
C42.27901.26262.12341.46153.02923.02921.08712.3484
C52.27902.12341.26261.46153.02923.02922.34841.0871
H61.10022.06072.06073.02923.02921.78703.98193.9819
H71.10022.06072.06073.02923.02921.78703.98193.9819
H83.29612.07703.19791.08712.34843.98193.98192.9648
H93.29613.19792.07702.34841.08713.98193.98192.9648

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 120.655 C1 N3 C5 120.655
N2 C1 N3 94.330 N2 C1 H6 113.374
N2 C1 H7 113.374 N2 C4 C5 102.181
N2 C4 H8 124.073 N3 C1 H6 113.374
N3 C1 H7 113.374 N3 C5 C4 102.181
N3 C5 H9 124.073 C4 C5 H9 133.746
C5 C4 H8 133.746 H6 C1 H7 108.603
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.009      
2 N -0.121      
3 N -0.121      
4 C -0.102      
5 C -0.102      
6 H 0.118      
7 H 0.118      
8 H 0.110      
9 H 0.110      


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 -0.574 0.574
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.522 0.000 0.000
y 0.000 -35.428 0.000
z 0.000 0.000 -22.315
Traceless
 xyz
x 0.350 0.000 0.000
y 0.000 -10.010 0.000
z 0.000 0.000 9.660
Polar
3z2-r219.320
x2-y26.906
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.344 0.000 0.000
y 0.000 6.319 0.000
z 0.000 0.000 8.667


<r2> (average value of r2) Å2
<r2> 77.878
(<r2>)1/2 8.825