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

using model chemistry: BLYP/STO-3G

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/STO-3G
 hartrees
Energy at 0K-223.090031
Energy at 298.15K-223.095475
HF Energy-223.090031
Nuclear repulsion energy162.164059
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/STO-3G
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 3349 3098 5.37      
2 A1 3195 2956 20.93      
3 A1 1696 1569 9.30      
4 A1 1474 1364 14.85      
5 A1 1334 1235 0.76      
6 A1 1280 1184 9.83      
7 A1 993 919 2.54      
8 A1 860 795 7.79      
9 A2 1137 1052 0.00      
10 A2 825 763 0.00      
11 A2 515 476 0.00      
12 B1 3289 3043 10.50      
13 B1 1003 928 4.01      
14 B1 769 711 6.59      
15 B1 258 239 32.07      
16 B2 3332 3082 0.01      
17 B2 1728 1598 0.79      
18 B2 1297 1200 2.01      
19 B2 1216 1125 12.85      
20 B2 1039 962 5.73      
21 B2 904 836 69.89      

Unscaled Zero Point Vibrational Energy (zpe) 15746.0 cm-1
Scaled (by 0.9252) Zero Point Vibrational Energy (zpe) 14568.2 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/STO-3G
ABC
0.35272 0.28043 0.16136

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.264
N2 0.000 1.000 0.285
N3 0.000 -1.000 0.285
C4 0.000 0.747 -0.986
C5 0.000 -0.747 -0.986
H6 -0.924 0.000 1.898
H7 0.924 0.000 1.898
H8 0.000 1.527 -1.773
H9 0.000 -1.527 -1.773

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.39941.39942.37102.37101.12011.12013.39993.3999
N21.39941.99961.29622.16012.11052.11052.12493.2594
N31.39941.99962.16011.29622.11052.11053.25942.1249
C42.37101.29622.16011.49323.11913.11911.10872.4064
C52.37102.16011.29621.49323.11913.11912.40641.1087
H61.12012.11052.11053.11913.11911.84704.08224.0822
H71.12012.11052.11053.11913.11911.84704.08224.0822
H83.39992.12493.25941.10872.40644.08224.08223.0550
H93.39993.25942.12492.40641.10874.08224.08223.0550

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 123.139 C1 N3 C5 123.139
N2 C1 N3 91.192 N2 C1 H6 113.325
N2 C1 H7 113.325 N2 C4 C5 101.264
N2 C4 H8 123.961 N3 C1 H6 113.325
N3 C1 H7 113.325 N3 C5 C4 101.264
N3 C5 H9 123.961 C4 C5 H9 134.775
C5 C4 H8 134.775 H6 C1 H7 111.076
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.003      
2 N -0.244      
3 N -0.244      
4 C 0.007      
5 C 0.007      
6 H 0.139      
7 H 0.139      
8 H 0.099      
9 H 0.099      


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 -0.103 0.103
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.021 0.000 0.000
y 0.000 -31.827 0.000
z 0.000 0.000 -21.410
Traceless
 xyz
x 0.598 0.000 0.000
y 0.000 -8.112 0.000
z 0.000 0.000 7.514
Polar
3z2-r215.028
x2-y25.806
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.657 0.000 0.000
y 0.000 2.799 0.000
z 0.000 0.000 5.391


<r2> (average value of r2) Å2
<r2> 79.448
(<r2>)1/2 8.913