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

using model chemistry: BLYP/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-226.128350
Energy at 298.15K-226.134294
HF Energy-226.128350
Nuclear repulsion energy166.046494
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/aug-cc-pVTZ
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 3128 3117 20.30      
2 A1 2965 2955 0.07      
3 A1 1619 1614 23.76      
4 A1 1361 1356 6.14      
5 A1 1343 1338 22.63      
6 A1 1214 1210 5.07      
7 A1 996 992 2.19      
8 A1 893 890 9.10      
9 A2 1109 1105 0.00      
10 A2 890 887 0.00      
11 A2 532 530 0.00      
12 B1 2989 2978 0.96      
13 B1 974 971 19.05      
14 B1 804 801 6.05      
15 B1 367 365 36.48      
16 B2 3115 3104 6.85      
17 B2 1682 1676 1.61      
18 B2 1321 1317 34.44      
19 B2 1205 1201 2.40      
20 B2 1045 1042 34.35      
21 B2 912 909 69.06      

Unscaled Zero Point Vibrational Energy (zpe) 15230.6 cm-1
Scaled (by 0.9966) Zero Point Vibrational Energy (zpe) 15178.8 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 BLYP/aug-cc-pVTZ
ABC
0.36107 0.30043 0.16929

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

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 0.283
N3 0.000 -0.997 0.283
C4 0.000 0.730 -0.953
C5 0.000 -0.730 -0.953
H6 -0.894 0.000 1.849
H7 0.894 0.000 1.849
H8 0.000 1.482 -1.737
H9 0.000 -1.482 -1.737

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.36031.36032.28062.28061.10011.10013.29723.2972
N21.36031.99441.26382.12372.06082.06082.07743.1980
N31.36031.99442.12371.26382.06082.06083.19802.0774
C42.28061.26382.12371.46063.03003.03001.08672.3474
C52.28062.12371.26381.46063.03003.03002.34741.0867
H61.10012.06082.06083.03003.03001.78843.98213.9821
H71.10012.06082.06083.03003.03001.78843.98213.9821
H83.29722.07743.19801.08672.34743.98213.98212.9639
H93.29723.19802.07742.34741.08673.98213.98212.9639

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 120.665 C1 N3 C5 120.665
N2 C1 N3 94.285 N2 C1 H6 113.343
N2 C1 H7 113.343 N2 C4 C5 102.192
N2 C4 H8 124.043 N3 C1 H6 113.343
N3 C1 H7 113.343 N3 C5 C4 102.192
N3 C5 H9 124.043 C4 C5 H9 133.764
C5 C4 H8 133.764 H6 C1 H7 108.740
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.126      
2 N -0.383      
3 N -0.383      
4 C -0.292      
5 C -0.292      
6 H 0.264      
7 H 0.264      
8 H 0.474      
9 H 0.474      


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 -0.744 0.744
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.937 0.000 0.000
y 0.000 -36.643 0.000
z 0.000 0.000 -22.377
Traceless
 xyz
x 0.573 0.000 0.000
y 0.000 -10.986 0.000
z 0.000 0.000 10.413
Polar
3z2-r220.826
x2-y27.706
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.221 0.000 0.000
y 0.000 8.053 0.000
z 0.000 0.000 9.196


<r2> (average value of r2) Å2
<r2> 78.262
(<r2>)1/2 8.847