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

using model chemistry: CCD/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCD/6-31G(2df,p)
 hartrees
Energy at 0K-225.688686
Energy at 298.15K-225.694717
HF Energy-224.838196
Nuclear repulsion energy163.642155
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 CCD/6-31G(2df,p)
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' 3757 3559 80.81      
2 A' 3338 3162 1.02      
3 A' 3310 3135 0.89      
4 A' 3308 3133 3.09      
5 A' 1606 1521 13.94      
6 A' 1554 1472 20.66      
7 A' 1493 1414 21.89      
8 A' 1404 1330 8.06      
9 A' 1312 1242 0.58      
10 A' 1184 1121 8.44      
11 A' 1179 1117 0.51      
12 A' 1128 1069 13.62      
13 A' 1104 1045 34.66      
14 A' 955 905 1.40      
15 A' 918 869 7.82      
16 A" 886 839 2.07      
17 A" 855 810 26.12      
18 A" 760 719 28.86      
19 A" 693 657 2.79      
20 A" 654 619 14.36      
21 A" 526 498 93.90      

Unscaled Zero Point Vibrational Energy (zpe) 15960.8 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 15118.1 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 CCD/6-31G(2df,p)
ABC
0.32761 0.31470 0.16051

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.104 0.000
C2 -1.083 0.280 0.000
C3 1.116 0.298 0.000
N4 -0.745 -0.983 0.000
C5 0.635 -0.982 0.000
H6 -0.012 2.107 0.000
H7 -2.091 0.663 0.000
H8 2.113 0.702 0.000
H9 1.196 -1.902 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.36071.37652.21632.18071.00282.13762.15103.2355
C21.36072.19831.30722.13142.11751.07903.22333.1548
C31.37652.19832.25901.36702.13183.22771.07602.2015
N42.21631.30722.25901.38043.17572.12623.31762.1477
C52.18072.13141.36701.38043.15603.18422.24011.0776
H61.00282.11752.13183.17573.15602.53172.54784.1872
H72.13761.07903.22772.12623.18422.53174.20464.1695
H82.15103.22331.07603.31762.24012.54784.20462.7605
H93.23553.15482.20152.14771.07764.18724.16952.7605

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 112.326 N1 C2 H7 121.939
N1 C3 C5 105.286 N1 C3 H8 122.103
C2 N1 C3 106.854 C2 N1 H6 126.590
C2 N4 C5 104.913 C3 N1 H6 126.556
C3 C5 N4 110.621 C3 C5 H9 128.074
N4 C2 H7 125.735 N4 C5 H9 121.306
C5 C3 H8 132.611
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability