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

using model chemistry: BLYP/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 BLYP/6-311G**
 hartrees
Energy at 0K-226.095947
Energy at 298.15K-226.101878
HF Energy-226.095947
Nuclear repulsion energy165.826208
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/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 3121 3109 22.55      
2 A1 2964 2953 0.11      
3 A1 1634 1627 19.23      
4 A1 1364 1359 11.70      
5 A1 1342 1337 12.57      
6 A1 1216 1211 8.46      
7 A1 997 993 4.05      
8 A1 884 881 12.03      
9 A2 1104 1100 0.00      
10 A2 886 883 0.00      
11 A2 531 529 0.00      
12 B1 2988 2976 0.00      
13 B1 975 971 17.96      
14 B1 800 797 6.16      
15 B1 363 362 36.97      
16 B2 3107 3095 12.69      
17 B2 1691 1684 1.52      
18 B2 1318 1312 36.00      
19 B2 1197 1193 2.10      
20 B2 1047 1043 28.67      
21 B2 914 911 78.15      

Unscaled Zero Point Vibrational Energy (zpe) 15221.7 cm-1
Scaled (by 0.9961) Zero Point Vibrational Energy (zpe) 15162.3 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 BLYP/6-311G**
ABC
0.35992 0.29969 0.16883

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.210
N2 0.000 0.997 0.283
N3 0.000 -0.997 0.283
C4 0.000 0.733 -0.954
C5 0.000 -0.733 -0.954
H6 -0.896 0.000 1.852
H7 0.896 0.000 1.852
H8 0.000 1.489 -1.738
H9 0.000 -1.489 -1.738

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.36141.36142.28422.28421.10231.10233.30253.3025
N21.36141.99461.26462.12682.06352.06352.08013.2041
N31.36141.99462.12681.26462.06352.06353.20412.0801
C42.28421.26462.12681.46613.03483.03481.08942.3563
C52.28422.12681.26461.46613.03483.03482.35631.0894
H61.10232.06352.06353.03483.03481.79223.98833.9883
H71.10232.06352.06353.03483.03481.79223.98833.9883
H83.30252.08013.20411.08942.35633.98833.98832.9776
H93.30253.20412.08012.35631.08943.98833.98832.9776

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 120.834 C1 N3 C5 120.834
N2 C1 N3 94.207 N2 C1 H6 113.355
N2 C1 H7 113.355 N2 C4 C5 102.062
N2 C4 H8 124.007 N3 C1 H6 113.355
N3 C1 H7 113.355 N3 C5 C4 102.062
N3 C5 H9 124.007 C4 C5 H9 133.931
C5 C4 H8 133.931 H6 C1 H7 108.762
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.021      
2 N -0.246      
3 N -0.246      
4 C -0.019      
5 C -0.019      
6 H 0.152      
7 H 0.152      
8 H 0.103      
9 H 0.103      


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 -0.471 0.471
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.338 0.000 0.000
y 0.000 -35.104 0.000
z 0.000 0.000 -22.202
Traceless
 xyz
x 0.315 0.000 0.000
y 0.000 -9.834 0.000
z 0.000 0.000 9.519
Polar
3z2-r219.038
x2-y26.766
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.861 0.000 0.000
y 0.000 5.664 0.000
z 0.000 0.000 8.376


<r2> (average value of r2) Å2
<r2> 77.957
(<r2>)1/2 8.829