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

using model chemistry: B97D3/aug-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/aug-cc-pVDZ
 hartrees
Energy at 0K-226.003959
Energy at 298.15K-226.009896
HF Energy-226.003959
Nuclear repulsion energy165.839249
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/aug-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 3163 3163 23.91      
2 A1 3000 3000 0.06      
3 A1 1650 1650 21.03      
4 A1 1372 1372 0.08      
5 A1 1340 1340 30.50      
6 A1 1236 1236 5.47      
7 A1 1009 1009 1.21      
8 A1 903 903 10.52      
9 A2 1105 1105 0.00      
10 A2 877 877 0.00      
11 A2 527 527 0.00      
12 B1 3039 3039 0.40      
13 B1 970 970 20.23      
14 B1 798 798 6.10      
15 B1 357 357 36.57      
16 B2 3147 3147 9.52      
17 B2 1710 1710 1.45      
18 B2 1339 1339 39.50      
19 B2 1197 1197 2.33      
20 B2 1056 1056 27.87      
21 B2 921 921 72.14      

Unscaled Zero Point Vibrational Energy (zpe) 15357.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15357.8 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/aug-cc-pVDZ
ABC
0.36044 0.29960 0.16896

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.208
N2 0.000 0.997 0.285
N3 0.000 -0.997 0.285
C4 0.000 0.731 -0.954
C5 0.000 -0.731 -0.954
H6 -0.899 0.000 1.848
H7 0.899 0.000 1.848
H8 0.000 1.489 -1.741
H9 0.000 -1.489 -1.741

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35911.35912.28272.28271.10401.10403.30403.3040
N21.35911.99411.26712.12642.06112.06112.08473.2070
N31.35911.99412.12641.26712.06112.06113.20702.0847
C42.28271.26712.12641.46223.03283.03281.09262.3555
C52.28272.12641.26711.46223.03283.03282.35551.0926
H61.10402.06112.06113.03283.03281.79893.98893.9889
H71.10402.06112.06113.03283.03281.79893.98893.9889
H83.30402.08473.20701.09262.35553.98893.98892.9781
H93.30403.20702.08472.35551.09263.98893.98892.9781

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 120.690 C1 N3 C5 120.690
N2 C1 N3 94.385 N2 C1 H6 113.206
N2 C1 H7 113.206 N2 C4 C5 102.117
N2 C4 H8 123.957 N3 C1 H6 113.206
N3 C1 H7 113.206 N3 C5 C4 102.117
N3 C5 H9 123.957 C4 C5 H9 133.926
C5 C4 H8 133.926 H6 C1 H7 109.118
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.000      
2 N -0.294      
3 N -0.294      
4 C 0.427      
5 C 0.427      
6 H -0.313      
7 H -0.313      
8 H -0.321      
9 H -0.321      


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 -0.763 0.763
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.645 0.000 0.000
y 0.000 -36.269 0.000
z 0.000 0.000 -21.965
Traceless
 xyz
x 0.471 0.000 0.000
y 0.000 -10.964 0.000
z 0.000 0.000 10.492
Polar
3z2-r220.984
x2-y27.623
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.142 0.000 0.000
y 0.000 7.919 0.000
z 0.000 0.000 9.138


<r2> (average value of r2) Å2
<r2> 78.188
(<r2>)1/2 8.842