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

using model chemistry: BLYP/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 BLYP/aug-cc-pVDZ
 hartrees
Energy at 0K-226.067891
Energy at 298.15K-226.073804
HF Energy-226.067891
Nuclear repulsion energy165.310418
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-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 3136 3130 19.34      
2 A1 2971 2966 0.06      
3 A1 1626 1623 21.69      
4 A1 1358 1356 1.26      
5 A1 1333 1330 28.91      
6 A1 1220 1218 5.80      
7 A1 996 994 1.28      
8 A1 890 888 10.18      
9 A2 1095 1093 0.00      
10 A2 869 867 0.00      
11 A2 525 524 0.00      
12 B1 3003 2997 0.90      
13 B1 966 964 19.31      
14 B1 795 794 6.74      
15 B1 358 357 36.84      
16 B2 3122 3116 6.72      
17 B2 1686 1683 1.62      
18 B2 1320 1318 37.63      
19 B2 1190 1188 2.45      
20 B2 1045 1043 31.51      
21 B2 902 900 70.00      

Unscaled Zero Point Vibrational Energy (zpe) 15202.4 cm-1
Scaled (by 0.9981) Zero Point Vibrational Energy (zpe) 15173.5 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-pVDZ
ABC
0.35925 0.29689 0.16786

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.215
N2 0.000 0.998 0.285
N3 0.000 -0.998 0.285
C4 0.000 0.734 -0.959
C5 0.000 -0.734 -0.959
H6 -0.902 0.000 1.858
H7 0.902 0.000 1.858
H8 0.000 1.495 -1.746
H9 0.000 -1.495 -1.746

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.36331.36332.29362.29361.10801.10803.31703.3170
N21.36331.99501.27152.13162.06962.06962.09163.2157
N31.36331.99502.13161.27152.06962.06963.21572.0916
C42.29361.27152.13161.46703.04743.04741.09572.3638
C52.29362.13161.27151.46703.04743.04742.36381.0957
H61.10802.06962.06963.04743.04741.80354.00534.0053
H71.10802.06962.06963.04743.04741.80354.00534.0053
H83.31702.09163.21571.09572.36384.00534.00532.9903
H93.31703.21572.09162.36381.09574.00534.00532.9903

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 120.991 C1 N3 C5 120.991
N2 C1 N3 94.053 N2 C1 H6 113.335
N2 C1 H7 113.335 N2 C4 C5 101.983
N2 C4 H8 123.980 N3 C1 H6 113.335
N3 C1 H7 113.335 N3 C5 C4 101.983
N3 C5 H9 123.980 C4 C5 H9 134.037
C5 C4 H8 134.037 H6 C1 H7 108.946
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.103      
2 N -0.170      
3 N -0.170      
4 C 0.510      
5 C 0.510      
6 H -0.441      
7 H -0.441      
8 H -0.451      
9 H -0.451      


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 -0.741 0.741
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.999 0.000 0.000
y 0.000 -36.830 0.000
z 0.000 0.000 -22.370
Traceless
 xyz
x 0.601 0.000 0.000
y 0.000 -11.146 0.000
z 0.000 0.000 10.545
Polar
3z2-r221.089
x2-y27.831
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.233 0.000 0.000
y 0.000 8.124 0.000
z 0.000 0.000 9.310


<r2> (average value of r2) Å2
<r2> 78.870
(<r2>)1/2 8.881