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

using model chemistry: B97D3/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B97D3/cc-pVDZ
 hartrees
Energy at 0K-225.984190
Energy at 298.15K-225.990119
HF Energy-225.984190
Nuclear repulsion energy165.875742
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 B97D3/cc-pVDZ
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 3153 3126 22.89      
2 A1 2995 2970 0.40      
3 A1 1671 1656 17.08      
4 A1 1373 1361 0.24      
5 A1 1326 1314 25.06      
6 A1 1239 1228 6.76      
7 A1 1011 1002 3.13      
8 A1 895 887 13.30      
9 A2 1104 1095 0.00      
10 A2 886 879 0.00      
11 A2 530 525 0.00      
12 B1 3035 3009 0.00      
13 B1 966 958 16.21      
14 B1 794 788 4.19      
15 B1 356 353 34.47      
16 B2 3137 3110 15.47      
17 B2 1727 1712 0.87      
18 B2 1343 1332 41.85      
19 B2 1192 1182 1.41      
20 B2 1058 1049 20.27      
21 B2 924 916 81.65      

Unscaled Zero Point Vibrational Energy (zpe) 15356.8 cm-1
Scaled (by 0.9915) Zero Point Vibrational Energy (zpe) 15226.2 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 B97D3/cc-pVDZ
ABC
0.36000 0.30019 0.16904

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.206
N2 0.000 0.997 0.284
N3 0.000 -0.997 0.284
C4 0.000 0.732 -0.953
C5 0.000 -0.732 -0.953
H6 -0.899 0.000 1.851
H7 0.899 0.000 1.851
H8 0.000 1.495 -1.739
H9 0.000 -1.495 -1.739

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35781.35782.28002.28001.10641.10643.30313.3031
N21.35781.99391.26562.12612.06312.06312.08403.2102
N31.35781.99392.12611.26562.06312.06313.21022.0840
C42.28001.26562.12611.46383.03433.03431.09572.3618
C52.28002.12611.26561.46383.03433.03432.36181.0957
H61.10642.06312.06313.03433.03431.79833.99163.9916
H71.10642.06312.06313.03433.03431.79833.99163.9916
H83.30312.08403.21021.09572.36183.99163.99162.9905
H93.30313.21022.08402.36181.09573.99163.99162.9905

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 120.669 C1 N3 C5 120.669
N2 C1 N3 94.485 N2 C1 H6 113.305
N2 C1 H7 113.305 N2 C4 C5 102.089
N2 C4 H8 123.748 N3 C1 H6 113.305
N3 C1 H7 113.305 N3 C5 C4 102.089
N3 C5 H9 123.748 C4 C5 H9 134.164
C5 C4 H8 134.164 H6 C1 H7 108.712
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.201      
2 N -0.196      
3 N -0.196      
4 C 0.031      
5 C 0.031      
6 H 0.066      
7 H 0.066      
8 H -0.002      
9 H -0.002      


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 -0.389 0.389
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.843 0.000 0.000
y 0.000 -34.115 0.000
z 0.000 0.000 -21.996
Traceless
 xyz
x 0.213 0.000 0.000
y 0.000 -9.195 0.000
z 0.000 0.000 8.982
Polar
3z2-r217.965
x2-y26.272
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.622 0.000 0.000
y 0.000 5.421 0.000
z 0.000 0.000 8.248


<r2> (average value of r2) Å2
<r2> 77.574
(<r2>)1/2 8.808