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

using model chemistry: B2PLYP=FULL/3-21G*

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/3-21G*
 hartrees
Energy at 0K-224.648407
Energy at 298.15K-224.654460
HF Energy-224.481097
Nuclear repulsion energy161.253083
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/3-21G*
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' 3607 3607 57.69      
2 A' 3338 3338 1.16      
3 A' 3315 3315 0.40      
4 A' 3313 3313 3.04      
5 A' 1534 1534 20.22      
6 A' 1467 1467 6.07      
7 A' 1400 1400 11.62      
8 A' 1324 1324 8.68      
9 A' 1279 1279 5.75      
10 A' 1164 1164 1.32      
11 A' 1092 1092 25.90      
12 A' 1087 1087 8.63      
13 A' 1045 1045 17.91      
14 A' 962 962 2.75      
15 A' 919 919 11.01      
16 A" 902 902 3.04      
17 A" 849 849 26.34      
18 A" 771 771 36.15      
19 A" 686 686 4.18      
20 A" 658 658 43.22      
21 A" 631 631 128.63      

Unscaled Zero Point Vibrational Energy (zpe) 15671.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15671.5 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 B2PLYP=FULL/3-21G*
ABC
0.31547 0.30746 0.15571

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.119 0.000
C2 -1.111 0.288 0.000
C3 1.132 0.297 0.000
N4 -0.754 -0.996 0.000
C5 0.655 -0.993 0.000
H6 0.001 2.130 0.000
H7 -2.117 0.665 0.000
H8 2.130 0.693 0.000
H9 1.214 -1.909 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.38701.39832.24512.21061.01102.16492.17193.2625
C21.38702.24231.33232.18102.15151.07453.26583.1988
C31.39832.24232.28671.37542.15293.26921.07402.2084
N42.24511.33232.28671.40913.21562.14813.34252.1700
C52.21062.18101.37541.40913.19003.22952.24031.0739
H61.01102.15152.15293.21563.19002.57532.56784.2173
H72.16491.07453.26922.14813.22952.57534.24684.2097
H82.17193.26581.07403.34252.24032.56784.24682.7594
H93.26253.19882.20842.17001.07394.21734.20972.7594

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 111.284 N1 C2 H7 122.663
N1 C3 C5 105.687 N1 C3 H8 122.387
C2 N1 C3 107.230 C2 N1 H6 126.874
C2 N4 C5 105.385 C3 N1 H6 125.896
C3 C5 N4 110.413 C3 C5 H9 128.337
N4 C2 H7 126.053 N4 C5 H9 121.250
C5 C3 H8 131.926
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability