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All results from a given calculation for C3H4N2 (4H-Imidazole)

using model chemistry: B2PLYP=FULLultrafine/6-311G**

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=FULLultrafine/6-311G**
 hartrees
Energy at 0K-226.052643
Energy at 298.15K 
HF Energy-225.773277
Nuclear repulsion energy160.613671
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=FULLultrafine/6-311G**
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' 3234 3234 12.02      
2 A' 3210 3210 8.40      
3 A' 3065 3065 1.67      
4 A' 1636 1636 38.14      
5 A' 1541 1541 8.45      
6 A' 1418 1418 20.58      
7 A' 1324 1324 23.58      
8 A' 1308 1308 5.47      
9 A' 1267 1267 7.51      
10 A' 1037 1037 58.45      
11 A' 1002 1002 11.02      
12 A' 945 945 3.52      
13 A' 882 882 2.04      
14 A' 880 880 15.00      
15 A" 3102 3102 1.88      
16 A" 1164 1164 0.41      
17 A" 1007 1007 15.32      
18 A" 962 962 0.43      
19 A" 756 756 6.62      
20 A" 566 566 21.56      
21 A" 365 365 6.77      

Unscaled Zero Point Vibrational Energy (zpe) 15334.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15334.9 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=FULLultrafine/6-311G**
ABC
0.32069 0.29250 0.15744

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.201 0.358 0.000
C2 0.000 1.135 0.000
N3 1.119 0.505 0.000
C4 0.733 -0.901 0.000
C5 -0.766 -0.856 0.000
H6 -0.075 2.215 0.000
H7 1.140 -1.409 0.881
H8 1.140 -1.409 -0.881
H9 -1.436 -1.708 0.000

Atom - Atom Distances (Å)
  N1 C2 N3 C4 C5 H6 H7 H8 H9
N11.43032.32402.30741.28902.17193.06183.06182.0792
C21.43031.28392.16452.13331.08252.92372.92373.1854
N32.32401.28391.45862.32482.08522.10732.10733.3802
C42.30742.16451.45861.49963.21951.09521.09522.3141
C51.28902.13332.32481.49963.14772.17132.17131.0841
H62.17191.08252.08523.21953.14773.92243.92244.1526
H73.06182.92372.10731.09522.17133.92241.76212.7387
H83.06182.92372.10731.09522.17133.92241.76212.7387
H92.07923.18543.38022.31411.08414.15262.73872.7387

picture of 4H-Imidazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 N3 117.690 N1 C2 H6 118.966
N1 C5 C4 111.445 N1 C5 H9 122.128
C2 N1 C5 103.224 C2 N3 C4 104.047
N3 C2 H6 123.344 N3 C4 C5 103.594
N3 C4 H7 110.405 N3 C4 H8 110.405
C4 C5 H9 126.427 C5 C4 H7 112.672
C5 C4 H8 112.672 H7 C4 H8 107.121
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability