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

using model chemistry: MP2=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 MP2=FULL/6-31G**
 hartrees
Energy at 0K-225.575157
Energy at 298.15K-225.581112
HF Energy-224.821666
Nuclear repulsion energy163.139963
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 MP2=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' 3743 3497 71.40      
2 A' 3369 3148 1.08      
3 A' 3343 3124 0.55      
4 A' 3340 3121 4.91      
5 A' 1577 1473 7.84      
6 A' 1545 1443 20.86      
7 A' 1505 1406 19.12      
8 A' 1407 1315 10.39      
9 A' 1307 1221 1.00      
10 A' 1203 1124 3.45      
11 A' 1178 1101 2.74      
12 A' 1130 1056 22.25      
13 A' 1107 1034 24.49      
14 A' 944 882 1.76      
15 A' 904 845 7.01      
16 A" 833 779 15.50      
17 A" 783 731 38.42      
18 A" 705 659 14.76      
19 A" 687 642 0.03      
20 A" 642 600 36.35      
21 A" 535 500 80.59      

Unscaled Zero Point Vibrational Energy (zpe) 15892.8 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 14850.2 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 MP2=FULL/6-31G**
ABC
0.32647 0.31188 0.15950

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.103 0.000
C2 -1.090 0.283 0.000
C3 1.118 0.306 0.000
N4 -0.740 -0.993 0.000
C5 0.635 -0.982 0.000
H6 -0.011 2.109 0.000
H7 -2.097 0.663 0.000
H8 2.113 0.712 0.000
H9 1.202 -1.897 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.36431.37342.22322.18001.00592.14282.14903.2315
C21.36432.20871.32332.13922.12091.07623.23193.1628
C31.37342.20872.26761.37622.12783.23521.07432.2042
N42.22321.32332.26761.37483.18672.14113.32392.1417
C52.18002.13921.37621.37483.15823.18902.24851.0758
H61.00592.12092.12783.18673.15822.53792.54294.1853
H72.14281.07623.23522.14113.18902.53794.21044.1753
H82.14903.23191.07433.32392.24852.54294.21042.7631
H93.23153.16282.20422.14171.07584.18534.17532.7631

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 111.618 N1 C2 H7 122.364
N1 C3 C5 104.903 N1 C3 H8 122.325
C2 N1 C3 107.561 C2 N1 H6 126.301
C2 N4 C5 104.886 C3 N1 H6 126.137
C3 C5 N4 111.033 C3 C5 H9 127.614
N4 C2 H7 126.018 N4 C5 H9 121.353
C5 C3 H8 132.773
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability