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All results from a given calculation for C3H4N2 (1H-Imidazole)

using model chemistry: B2PLYP=FULL/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP=FULL/6-31G**
 hartrees
Energy at 0K-225.999217
Energy at 298.15K-226.005170
HF Energy-225.750237
Nuclear repulsion energy163.113179
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=FULL/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3708 3708 56.85      
2 A' 3330 3330 1.68      
3 A' 3302 3302 0.75      
4 A' 3298 3298 6.67      
5 A' 1578 1578 11.21      
6 A' 1531 1531 18.48      
7 A' 1466 1466 17.65      
8 A' 1391 1391 9.01      
9 A' 1301 1301 0.62      
10 A' 1178 1178 4.82      
11 A' 1166 1166 2.56      
12 A' 1114 1114 17.32      
13 A' 1092 1092 33.37      
14 A' 945 945 1.64      
15 A' 907 907 7.88      
16 A" 856 856 6.71      
17 A" 806 806 31.69      
18 A" 722 722 22.91      
19 A" 684 684 2.12      
20 A" 645 645 18.03      
21 A" 515 515 95.33      

Unscaled Zero Point Vibrational Energy (zpe) 15766.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15766.4 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=FULL/6-31G**
ABC
0.32559 0.31253 0.15946

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.105 0.000
C2 -1.090 0.282 0.000
C3 1.120 0.301 0.000
N4 -0.743 -0.988 0.000
C5 0.635 -0.983 0.000
H6 -0.010 2.111 0.000
H7 -2.099 0.662 0.000
H8 2.117 0.706 0.000
H9 1.199 -1.901 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.36581.37872.22152.18251.00622.14502.15433.2370
C21.36582.20971.31682.13912.12431.07833.23453.1634
C31.37872.20972.26531.37202.13413.23881.07602.2037
N42.22151.31682.26531.37843.18522.13623.32382.1462
C52.18252.13911.37201.37843.16073.19102.24601.0779
H61.00622.12432.13413.18523.16072.54212.54964.1910
H72.14501.07833.23882.13623.19102.54214.21594.1774
H82.15433.23451.07603.32382.24602.54964.21592.7636
H93.23703.16342.20372.14621.07794.19104.17742.7636

picture of 1H-Imidazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 N4 111.795 N1 C2 H7 122.270
N1 C3 C5 105.018 N1 C3 H8 122.226
C2 N1 C3 107.242 C2 N1 H6 126.496
C2 N4 C5 105.040 C3 N1 H6 126.262
C3 C5 N4 110.905 C3 C5 H9 127.786
N4 C2 H7 125.935 N4 C5 H9 121.309
C5 C3 H8 132.755
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability