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

using model chemistry: B2PLYP/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP/3-21G*
 hartrees
Energy at 0K-224.527900
Energy at 298.15K-224.533947
HF Energy-224.367860
Nuclear repulsion energy165.417118
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 B2PLYP/3-21G*
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 3290 3290 9.05      
2 A1 3117 3117 0.34      
3 A1 1667 1667 25.41      
4 A1 1480 1480 11.59      
5 A1 1361 1361 0.80      
6 A1 1239 1239 6.58      
7 A1 1026 1026 17.20      
8 A1 884 884 5.65      
9 A2 1190 1190 0.00      
10 A2 940 940 0.00      
11 A2 577 577 0.00      
12 B1 3162 3162 0.12      
13 B1 1033 1033 18.55      
14 B1 855 855 9.75      
15 B1 379 379 45.76      
16 B2 3274 3274 12.09      
17 B2 1711 1711 0.33      
18 B2 1328 1328 9.69      
19 B2 1275 1275 2.01      
20 B2 1066 1066 29.95      
21 B2 976 976 88.41      

Unscaled Zero Point Vibrational Energy (zpe) 15913.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15913.3 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 B2PLYP/3-21G*
ABC
0.35834 0.29727 0.16774

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.222
N2 0.000 0.998 0.282
N3 0.000 -0.998 0.282
C4 0.000 0.740 -0.956
C5 0.000 -0.740 -0.956
H6 -0.898 0.000 1.841
H7 0.898 0.000 1.841
H8 0.000 1.470 -1.747
H9 0.000 -1.470 -1.747

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.37121.37122.30072.30071.09081.09083.31363.3136
N21.37121.99641.26482.13452.05752.05752.08373.1955
N31.37121.99642.13451.26482.05752.05753.19552.0837
C42.30071.26482.13451.48073.02963.02961.07632.3477
C52.30072.13451.26481.48073.02963.02962.34771.0763
H61.09082.05752.05753.02963.02961.79673.98043.9804
H71.09082.05752.05753.02963.02961.79673.98043.9804
H83.31362.08373.19551.07632.34773.98043.98042.9400
H93.31363.19552.08372.34771.07633.98043.98042.9400

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 121.521 C1 N3 C5 121.521
N2 C1 N3 93.434 N2 C1 H6 112.883
N2 C1 H7 112.883 N2 C4 C5 101.763
N2 C4 H8 125.559 N3 C1 H6 112.883
N3 C1 H7 112.883 N3 C5 C4 101.763
N3 C5 H9 125.559 C4 C5 H9 132.679
C5 C4 H8 132.679 H6 C1 H7 110.896
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.059      
2 N -0.502      
3 N -0.502      
4 C 0.030      
5 C 0.030      
6 H 0.282      
7 H 0.282      
8 H 0.220      
9 H 0.220      


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 -0.336 0.336
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.438 0.000 0.000
y 0.000 -35.356 0.000
z 0.000 0.000 -21.805
Traceless
 xyz
x 0.143 0.000 0.000
y 0.000 -10.235 0.000
z 0.000 0.000 10.092
Polar
3z2-r220.184
x2-y26.918
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.841 0.000 0.000
y 0.000 4.216 0.000
z 0.000 0.000 7.284


<r2> (average value of r2) Å2
<r2> 78.217
(<r2>)1/2 8.844