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

using model chemistry: QCISD(T)=FULL/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD(T)=FULL/6-31+G**
 hartrees
Energy at 0K-225.645382
Energy at 298.15K-225.651203
HF Energy-224.829488
Nuclear repulsion energy162.458510
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 QCISD(T)=FULL/6-31+G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3724 3724        
2 A' 3334 3334        
3 A' 3312 3312        
4 A' 3307 3307        
5 A' 1574 1574        
6 A' 1527 1527        
7 A' 1470 1470        
8 A' 1385 1385        
9 A' 1298 1298        
10 A' 1166 1166        
11 A' 1158 1158        
12 A' 1112 1112        
13 A' 1086 1086        
14 A' 937 937        
15 A' 901 901        
16 A" 811 811        
17 A" 787 787        
18 A" 692 692        
19 A" 657 657        
20 A" 609 609        
21 A" 436 436        

Unscaled Zero Point Vibrational Energy (zpe) 15641.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15641.5 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 QCISD(T)=FULL/6-31+G**
ABC
0.32272 0.31006 0.15813

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.110 0.000
C2 -1.094 0.284 0.000
C3 1.125 0.302 0.000
N4 -0.748 -0.992 0.000
C5 0.640 -0.987 0.000
H6 -0.012 2.117 0.000
H7 -2.103 0.663 0.000
H8 2.123 0.706 0.000
H9 1.202 -1.906 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.37081.38492.23142.19261.00692.15052.16073.2471
C21.37082.21881.32292.15022.12821.07803.24413.1735
C31.38492.21882.27601.37702.14163.24821.07652.2096
N42.23141.32292.27601.38763.19512.13973.33482.1531
C52.19262.15021.37701.38763.17173.20142.25021.0775
H61.00692.12822.14163.19513.17172.54722.55894.2025
H72.15051.07803.24822.13973.20142.54724.22624.1865
H82.16073.24411.07653.33482.25022.55894.22622.7696
H93.24713.17352.20962.15311.07754.20254.18652.7696

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 111.857 N1 C2 H7 122.399
N1 C3 C5 105.099 N1 C3 H8 122.261
C2 N1 C3 107.252 C2 N1 H6 126.356
C2 N4 C5 104.968 C3 N1 H6 126.392
C3 C5 N4 110.825 C3 C5 H9 127.960
N4 C2 H7 125.744 N4 C5 H9 121.215
C5 C3 H8 132.640
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability